msan_test.cc revision bb22942b91bf0855da4a9da132c77f325b187b84 
1//===-- msan_test.cc ------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file is a part of MemorySanitizer.
11//
12// MemorySanitizer unit tests.
13//===----------------------------------------------------------------------===//
14
15#ifndef MSAN_EXTERNAL_TEST_CONFIG
16#include "msan_test_config.h"
17#endif // MSAN_EXTERNAL_TEST_CONFIG
18
19#include "sanitizer/msan_interface.h"
20#include "msandr_test_so.h"
21
22#include <inttypes.h>
23#include <stdlib.h>
24#include <stdarg.h>
25#include <stdio.h>
26#include <assert.h>
27#include <wchar.h>
28#include <math.h>
29#include <malloc.h>
30
31#include <arpa/inet.h>
32#include <dlfcn.h>
33#include <grp.h>
34#include <unistd.h>
35#include <link.h>
36#include <limits.h>
37#include <sys/time.h>
38#include <poll.h>
39#include <sys/types.h>
40#include <sys/stat.h>
41#include <fcntl.h>
42#include <sys/resource.h>
43#include <sys/ioctl.h>
44#include <sys/sysinfo.h>
45#include <sys/utsname.h>
46#include <sys/mman.h>
47#include <sys/vfs.h>
48#include <dirent.h>
49#include <pwd.h>
50#include <sys/socket.h>
51#include <netdb.h>
52
53#if defined(__i386__) || defined(__x86_64__)
54# include <emmintrin.h>
55# define MSAN_HAS_M128 1
56#else
57# define MSAN_HAS_M128 0
58#endif
59
60static const int kPageSize = 4096;
61
62typedef unsigned char      U1;
63typedef unsigned short     U2;  // NOLINT
64typedef unsigned int       U4;
65typedef unsigned long long U8;  // NOLINT
66typedef   signed char      S1;
67typedef   signed short     S2;  // NOLINT
68typedef   signed int       S4;
69typedef   signed long long S8;  // NOLINT
70#define NOINLINE      __attribute__((noinline))
71#define INLINE      __attribute__((always_inline))
72
73static bool TrackingOrigins() {
74  S8 x;
75  __msan_set_origin(&x, sizeof(x), 0x1234);
76  U4 origin = __msan_get_origin(&x);
77  __msan_set_origin(&x, sizeof(x), 0);
78  return origin == 0x1234;
79}
80
81#define EXPECT_UMR(action) \
82    do {                        \
83      __msan_set_expect_umr(1); \
84      action;                   \
85      __msan_set_expect_umr(0); \
86    } while (0)
87
88#define EXPECT_UMR_O(action, origin) \
89    do {                                            \
90      __msan_set_expect_umr(1);                     \
91      action;                                       \
92      __msan_set_expect_umr(0);                     \
93      if (TrackingOrigins())                        \
94        EXPECT_EQ(origin, __msan_get_umr_origin()); \
95    } while (0)
96
97#define EXPECT_UMR_S(action, stack_origin) \
98    do {                                            \
99      __msan_set_expect_umr(1);                     \
100      action;                                       \
101      __msan_set_expect_umr(0);                     \
102      U4 id = __msan_get_umr_origin();             \
103      const char *str = __msan_get_origin_descr_if_stack(id); \
104      if (!str || strcmp(str, stack_origin)) {      \
105        fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \
106                id, stack_origin, str);  \
107        EXPECT_EQ(1, 0);                            \
108      }                                             \
109    } while (0)
110
111#define EXPECT_POISONED(x) ExpectPoisoned(x)
112
113template<typename T>
114void ExpectPoisoned(const T& t) {
115  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
116}
117
118#define EXPECT_POISONED_O(x, origin) \
119  ExpectPoisonedWithOrigin(x, origin)
120
121template<typename T>
122void ExpectPoisonedWithOrigin(const T& t, unsigned origin) {
123  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
124  if (TrackingOrigins())
125    EXPECT_EQ(origin, __msan_get_origin((void*)&t));
126}
127
128#define EXPECT_POISONED_S(x, stack_origin) \
129  ExpectPoisonedWithStackOrigin(x, stack_origin)
130
131template<typename T>
132void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) {
133  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
134  U4 id = __msan_get_origin((void*)&t);
135  const char *str = __msan_get_origin_descr_if_stack(id);
136  if (!str || strcmp(str, stack_origin)) {
137    fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s",
138        id, stack_origin, str);
139    EXPECT_EQ(1, 0);
140  }
141}
142
143#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x)
144
145template<typename T>
146void ExpectNotPoisoned(const T& t) {
147  EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t)));
148}
149
150static U8 poisoned_array[100];
151template<class T>
152T *GetPoisoned(int i = 0, T val = 0) {
153  T *res = (T*)&poisoned_array[i];
154  *res = val;
155  __msan_poison(&poisoned_array[i], sizeof(T));
156  return res;
157}
158
159template<class T>
160T *GetPoisonedO(int i, U4 origin, T val = 0) {
161  T *res = (T*)&poisoned_array[i];
162  *res = val;
163  __msan_poison(&poisoned_array[i], sizeof(T));
164  __msan_set_origin(&poisoned_array[i], sizeof(T), origin);
165  return res;
166}
167
168// This function returns its parameter but in such a way that compiler
169// can not prove it.
170template<class T>
171NOINLINE
172static T Ident(T t) {
173  volatile T ret = t;
174  return ret;
175}
176
177template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); }
178
179static volatile int g_one = 1;
180static volatile int g_zero = 0;
181static volatile int g_0 = 0;
182static volatile int g_1 = 1;
183
184S4 a_s4[100];
185S8 a_s8[100];
186
187// Check that malloc poisons memory.
188// A lot of tests below depend on this.
189TEST(MemorySanitizerSanity, PoisonInMalloc) {
190  int *x = (int*)malloc(sizeof(int));
191  EXPECT_POISONED(*x);
192  free(x);
193}
194
195TEST(MemorySanitizer, NegativeTest1) {
196  S4 *x = GetPoisoned<S4>();
197  if (g_one)
198    *x = 0;
199  EXPECT_NOT_POISONED(*x);
200}
201
202TEST(MemorySanitizer, PositiveTest1) {
203  // Load to store.
204  EXPECT_POISONED(*GetPoisoned<S1>());
205  EXPECT_POISONED(*GetPoisoned<S2>());
206  EXPECT_POISONED(*GetPoisoned<S4>());
207  EXPECT_POISONED(*GetPoisoned<S8>());
208
209  // S->S conversions.
210  EXPECT_POISONED(*GetPoisoned<S1>());
211  EXPECT_POISONED(*GetPoisoned<S1>());
212  EXPECT_POISONED(*GetPoisoned<S1>());
213
214  EXPECT_POISONED(*GetPoisoned<S2>());
215  EXPECT_POISONED(*GetPoisoned<S2>());
216  EXPECT_POISONED(*GetPoisoned<S2>());
217
218  EXPECT_POISONED(*GetPoisoned<S4>());
219  EXPECT_POISONED(*GetPoisoned<S4>());
220  EXPECT_POISONED(*GetPoisoned<S4>());
221
222  EXPECT_POISONED(*GetPoisoned<S8>());
223  EXPECT_POISONED(*GetPoisoned<S8>());
224  EXPECT_POISONED(*GetPoisoned<S8>());
225
226  // ZExt
227  EXPECT_POISONED(*GetPoisoned<U1>());
228  EXPECT_POISONED(*GetPoisoned<U1>());
229  EXPECT_POISONED(*GetPoisoned<U1>());
230  EXPECT_POISONED(*GetPoisoned<U2>());
231  EXPECT_POISONED(*GetPoisoned<U2>());
232  EXPECT_POISONED(*GetPoisoned<U4>());
233
234  // Unary ops.
235  EXPECT_POISONED(- *GetPoisoned<S4>());
236
237  EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1));
238
239
240  a_s4[g_zero] = 1 - *GetPoisoned<S4>();
241  a_s4[g_zero] = 1 + *GetPoisoned<S4>();
242}
243
244TEST(MemorySanitizer, Phi1) {
245  S4 c;
246  if (g_one) {
247    c = *GetPoisoned<S4>();
248  } else {
249    break_optimization(0);
250    c = 0;
251  }
252  EXPECT_POISONED(c);
253}
254
255TEST(MemorySanitizer, Phi2) {
256  S4 i = *GetPoisoned<S4>();
257  S4 n = g_one;
258  EXPECT_UMR(for (; i < g_one; i++););
259  EXPECT_POISONED(i);
260}
261
262NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); }
263NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); }
264NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); }
265
266TEST(MemorySanitizer, ArgTest) {
267  Arg1ExpectUMR(*GetPoisoned<S4>());
268  Arg2ExpectUMR(0, *GetPoisoned<S4>());
269  Arg3ExpectUMR(0, 1, *GetPoisoned<S8>());
270}
271
272
273TEST(MemorySanitizer, CallAndRet) {
274  if (!__msan_has_dynamic_component()) return;
275  ReturnPoisoned<S1>();
276  ReturnPoisoned<S2>();
277  ReturnPoisoned<S4>();
278  ReturnPoisoned<S8>();
279
280  EXPECT_POISONED(ReturnPoisoned<S1>());
281  EXPECT_POISONED(ReturnPoisoned<S2>());
282  EXPECT_POISONED(ReturnPoisoned<S4>());
283  EXPECT_POISONED(ReturnPoisoned<S8>());
284}
285
286// malloc() in the following test may be optimized to produce a compile-time
287// undef value. Check that we trap on the volatile assignment anyway.
288TEST(MemorySanitizer, DISABLED_MallocNoIdent) {
289  S4 *x = (int*)malloc(sizeof(S4));
290  EXPECT_POISONED(*x);
291  free(x);
292}
293
294TEST(MemorySanitizer, Malloc) {
295  S4 *x = (int*)Ident(malloc(sizeof(S4)));
296  EXPECT_POISONED(*x);
297  free(x);
298}
299
300TEST(MemorySanitizer, Realloc) {
301  S4 *x = (int*)Ident(realloc(0, sizeof(S4)));
302  EXPECT_POISONED(x[0]);
303  x[0] = 1;
304  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
305  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
306  EXPECT_POISONED(x[1]);
307  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
308  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
309  EXPECT_POISONED(x[2]);
310  EXPECT_POISONED(x[1]);
311  x[2] = 1;  // Init this here. Check that after realloc it is poisoned again.
312  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
313  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
314  EXPECT_POISONED(x[1]);
315  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
316  EXPECT_POISONED(x[1]);
317  EXPECT_POISONED(x[2]);
318  free(x);
319}
320
321TEST(MemorySanitizer, Calloc) {
322  S4 *x = (int*)Ident(calloc(1, sizeof(S4)));
323  EXPECT_NOT_POISONED(*x);  // Should not be poisoned.
324  // EXPECT_EQ(0, *x);
325  free(x);
326}
327
328TEST(MemorySanitizer, AndOr) {
329  U4 *p = GetPoisoned<U4>();
330  // We poison two bytes in the midle of a 4-byte word to make the test
331  // correct regardless of endianness.
332  ((U1*)p)[1] = 0;
333  ((U1*)p)[2] = 0xff;
334  EXPECT_NOT_POISONED(*p & 0x00ffff00);
335  EXPECT_NOT_POISONED(*p & 0x00ff0000);
336  EXPECT_NOT_POISONED(*p & 0x0000ff00);
337  EXPECT_POISONED(*p & 0xff000000);
338  EXPECT_POISONED(*p & 0x000000ff);
339  EXPECT_POISONED(*p & 0x0000ffff);
340  EXPECT_POISONED(*p & 0xffff0000);
341
342  EXPECT_NOT_POISONED(*p | 0xff0000ff);
343  EXPECT_NOT_POISONED(*p | 0xff00ffff);
344  EXPECT_NOT_POISONED(*p | 0xffff00ff);
345  EXPECT_POISONED(*p | 0xff000000);
346  EXPECT_POISONED(*p | 0x000000ff);
347  EXPECT_POISONED(*p | 0x0000ffff);
348  EXPECT_POISONED(*p | 0xffff0000);
349
350  EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>());
351}
352
353template<class T>
354static bool applyNot(T value, T shadow) {
355  __msan_partial_poison(&value, &shadow, sizeof(T));
356  return !value;
357}
358
359TEST(MemorySanitizer, Not) {
360  EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0));
361  EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0));
362  EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF));
363  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF));
364  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF));
365  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF));
366  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000));
367  EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000));
368  EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000));
369  EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000));
370
371  EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0));
372  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE));
373  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0));
374  EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF));
375
376  EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1)));
377  EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2)));
378}
379
380TEST(MemorySanitizer, Shift) {
381  U4 *up = GetPoisoned<U4>();
382  ((U1*)up)[0] = 0;
383  ((U1*)up)[3] = 0xff;
384  EXPECT_NOT_POISONED(*up >> 30);
385  EXPECT_NOT_POISONED(*up >> 24);
386  EXPECT_POISONED(*up >> 23);
387  EXPECT_POISONED(*up >> 10);
388
389  EXPECT_NOT_POISONED(*up << 30);
390  EXPECT_NOT_POISONED(*up << 24);
391  EXPECT_POISONED(*up << 23);
392  EXPECT_POISONED(*up << 10);
393
394  S4 *sp = (S4*)up;
395  EXPECT_NOT_POISONED(*sp >> 30);
396  EXPECT_NOT_POISONED(*sp >> 24);
397  EXPECT_POISONED(*sp >> 23);
398  EXPECT_POISONED(*sp >> 10);
399
400  sp = GetPoisoned<S4>();
401  ((S1*)sp)[1] = 0;
402  ((S1*)sp)[2] = 0;
403  EXPECT_POISONED(*sp >> 31);
404
405  EXPECT_POISONED(100 >> *GetPoisoned<S4>());
406  EXPECT_POISONED(100U >> *GetPoisoned<S4>());
407}
408
409NOINLINE static int GetPoisonedZero() {
410  int *zero = new int;
411  *zero = 0;
412  __msan_poison(zero, sizeof(*zero));
413  int res = *zero;
414  delete zero;
415  return res;
416}
417
418TEST(MemorySanitizer, LoadFromDirtyAddress) {
419  int *a = new int;
420  *a = 0;
421  EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()]));
422  delete a;
423}
424
425TEST(MemorySanitizer, StoreToDirtyAddress) {
426  int *a = new int;
427  EXPECT_UMR(a[GetPoisonedZero()] = 0);
428  break_optimization(a);
429  delete a;
430}
431
432
433NOINLINE void StackTestFunc() {
434  S4 p4;
435  S4 ok4 = 1;
436  S2 p2;
437  S2 ok2 = 1;
438  S1 p1;
439  S1 ok1 = 1;
440  break_optimization(&p4);
441  break_optimization(&ok4);
442  break_optimization(&p2);
443  break_optimization(&ok2);
444  break_optimization(&p1);
445  break_optimization(&ok1);
446
447  EXPECT_POISONED(p4);
448  EXPECT_POISONED(p2);
449  EXPECT_POISONED(p1);
450  EXPECT_NOT_POISONED(ok1);
451  EXPECT_NOT_POISONED(ok2);
452  EXPECT_NOT_POISONED(ok4);
453}
454
455TEST(MemorySanitizer, StackTest) {
456  StackTestFunc();
457}
458
459NOINLINE void StackStressFunc() {
460  int foo[10000];
461  break_optimization(foo);
462}
463
464TEST(MemorySanitizer, DISABLED_StackStressTest) {
465  for (int i = 0; i < 1000000; i++)
466    StackStressFunc();
467}
468
469template<class T>
470void TestFloatingPoint() {
471  static volatile T v;
472  static T g[100];
473  break_optimization(&g);
474  T *x = GetPoisoned<T>();
475  T *y = GetPoisoned<T>(1);
476  EXPECT_POISONED(*x);
477  EXPECT_POISONED((long long)*x);
478  EXPECT_POISONED((int)*x);
479  g[0] = *x;
480  g[1] = *x + *y;
481  g[2] = *x - *y;
482  g[3] = *x * *y;
483}
484
485TEST(MemorySanitizer, FloatingPointTest) {
486  TestFloatingPoint<float>();
487  TestFloatingPoint<double>();
488}
489
490TEST(MemorySanitizer, DynMem) {
491  S4 x = 0;
492  S4 *y = GetPoisoned<S4>();
493  memcpy(y, &x, g_one * sizeof(S4));
494  EXPECT_NOT_POISONED(*y);
495}
496
497static char *DynRetTestStr;
498
499TEST(MemorySanitizer, DynRet) {
500  if (!__msan_has_dynamic_component()) return;
501  ReturnPoisoned<S8>();
502  EXPECT_NOT_POISONED(clearenv());
503}
504
505
506TEST(MemorySanitizer, DynRet1) {
507  if (!__msan_has_dynamic_component()) return;
508  ReturnPoisoned<S8>();
509}
510
511struct LargeStruct {
512  S4 x[10];
513};
514
515NOINLINE
516LargeStruct LargeRetTest() {
517  LargeStruct res;
518  res.x[0] = *GetPoisoned<S4>();
519  res.x[1] = *GetPoisoned<S4>();
520  res.x[2] = *GetPoisoned<S4>();
521  res.x[3] = *GetPoisoned<S4>();
522  res.x[4] = *GetPoisoned<S4>();
523  res.x[5] = *GetPoisoned<S4>();
524  res.x[6] = *GetPoisoned<S4>();
525  res.x[7] = *GetPoisoned<S4>();
526  res.x[8] = *GetPoisoned<S4>();
527  res.x[9] = *GetPoisoned<S4>();
528  return res;
529}
530
531TEST(MemorySanitizer, strcmp) {
532  char s1[10];
533  char s2[10];
534  strncpy(s1, "foo", 10);
535  s2[0] = 'f';
536  s2[1] = 'n';
537  EXPECT_GT(strcmp(s1, s2), 0);
538  s2[1] = 'o';
539  int res;
540  EXPECT_UMR(res = strcmp(s1, s2));
541  EXPECT_NOT_POISONED(res);
542  EXPECT_EQ(strncmp(s1, s2, 1), 0);
543}
544
545TEST(MemorySanitizer, LargeRet) {
546  LargeStruct a = LargeRetTest();
547  EXPECT_POISONED(a.x[0]);
548  EXPECT_POISONED(a.x[9]);
549}
550
551TEST(MemorySanitizer, strerror) {
552  char *buf = strerror(EINVAL);
553  EXPECT_NOT_POISONED(strlen(buf));
554  buf = strerror(123456);
555  EXPECT_NOT_POISONED(strlen(buf));
556}
557
558TEST(MemorySanitizer, strerror_r) {
559  errno = 0;
560  char buf[1000];
561  char *res = strerror_r(EINVAL, buf, sizeof(buf));
562  ASSERT_EQ(0, errno);
563  if (!res) res = buf; // POSIX version success.
564  EXPECT_NOT_POISONED(strlen(res));
565}
566
567TEST(MemorySanitizer, fread) {
568  char *x = new char[32];
569  FILE *f = fopen("/proc/self/stat", "r");
570  assert(f);
571  fread(x, 1, 32, f);
572  EXPECT_NOT_POISONED(x[0]);
573  EXPECT_NOT_POISONED(x[16]);
574  EXPECT_NOT_POISONED(x[31]);
575  fclose(f);
576  delete x;
577}
578
579TEST(MemorySanitizer, read) {
580  char *x = new char[32];
581  int fd = open("/proc/self/stat", O_RDONLY);
582  assert(fd > 0);
583  int sz = read(fd, x, 32);
584  assert(sz == 32);
585  EXPECT_NOT_POISONED(x[0]);
586  EXPECT_NOT_POISONED(x[16]);
587  EXPECT_NOT_POISONED(x[31]);
588  close(fd);
589  delete x;
590}
591
592TEST(MemorySanitizer, pread) {
593  char *x = new char[32];
594  int fd = open("/proc/self/stat", O_RDONLY);
595  assert(fd > 0);
596  int sz = pread(fd, x, 32, 0);
597  assert(sz == 32);
598  EXPECT_NOT_POISONED(x[0]);
599  EXPECT_NOT_POISONED(x[16]);
600  EXPECT_NOT_POISONED(x[31]);
601  close(fd);
602  delete x;
603}
604
605TEST(MemorySanitizer, readv) {
606  char buf[2011];
607  struct iovec iov[2];
608  iov[0].iov_base = buf + 1;
609  iov[0].iov_len = 5;
610  iov[1].iov_base = buf + 10;
611  iov[1].iov_len = 2000;
612  int fd = open("/proc/self/stat", O_RDONLY);
613  assert(fd > 0);
614  int sz = readv(fd, iov, 2);
615  ASSERT_LT(sz, 5 + 2000);
616  ASSERT_GT(sz, iov[0].iov_len);
617  EXPECT_POISONED(buf[0]);
618  EXPECT_NOT_POISONED(buf[1]);
619  EXPECT_NOT_POISONED(buf[5]);
620  EXPECT_POISONED(buf[6]);
621  EXPECT_POISONED(buf[9]);
622  EXPECT_NOT_POISONED(buf[10]);
623  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
624  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
625  close(fd);
626}
627
628TEST(MemorySanitizer, preadv) {
629  char buf[2011];
630  struct iovec iov[2];
631  iov[0].iov_base = buf + 1;
632  iov[0].iov_len = 5;
633  iov[1].iov_base = buf + 10;
634  iov[1].iov_len = 2000;
635  int fd = open("/proc/self/stat", O_RDONLY);
636  assert(fd > 0);
637  int sz = preadv(fd, iov, 2, 3);
638  ASSERT_LT(sz, 5 + 2000);
639  ASSERT_GT(sz, iov[0].iov_len);
640  EXPECT_POISONED(buf[0]);
641  EXPECT_NOT_POISONED(buf[1]);
642  EXPECT_NOT_POISONED(buf[5]);
643  EXPECT_POISONED(buf[6]);
644  EXPECT_POISONED(buf[9]);
645  EXPECT_NOT_POISONED(buf[10]);
646  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
647  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
648  close(fd);
649}
650
651// FIXME: fails now.
652TEST(MemorySanitizer, DISABLED_ioctl) {
653  struct winsize ws;
654  EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0);
655  EXPECT_NOT_POISONED(ws.ws_col);
656}
657
658TEST(MemorySanitizer, readlink) {
659  char *x = new char[1000];
660  readlink("/proc/self/exe", x, 1000);
661  EXPECT_NOT_POISONED(x[0]);
662  delete [] x;
663}
664
665
666TEST(MemorySanitizer, stat) {
667  struct stat* st = new struct stat;
668  int res = stat("/proc/self/stat", st);
669  assert(!res);
670  EXPECT_NOT_POISONED(st->st_dev);
671  EXPECT_NOT_POISONED(st->st_mode);
672  EXPECT_NOT_POISONED(st->st_size);
673}
674
675TEST(MemorySanitizer, fstatat) {
676  struct stat* st = new struct stat;
677  int dirfd = open("/proc/self", O_RDONLY);
678  assert(dirfd > 0);
679  int res = fstatat(dirfd, "stat", st, 0);
680  assert(!res);
681  EXPECT_NOT_POISONED(st->st_dev);
682  EXPECT_NOT_POISONED(st->st_mode);
683  EXPECT_NOT_POISONED(st->st_size);
684  close(dirfd);
685}
686
687TEST(MemorySanitizer, statfs) {
688  struct statfs* st = new struct statfs;
689  int res = statfs("/", st);
690  assert(!res);
691  EXPECT_NOT_POISONED(st->f_type);
692  EXPECT_NOT_POISONED(st->f_bfree);
693  EXPECT_NOT_POISONED(st->f_namelen);
694}
695
696TEST(MemorySanitizer, pipe) {
697  int* pipefd = new int[2];
698  int res = pipe(pipefd);
699  assert(!res);
700  EXPECT_NOT_POISONED(pipefd[0]);
701  EXPECT_NOT_POISONED(pipefd[1]);
702  close(pipefd[0]);
703  close(pipefd[1]);
704}
705
706TEST(MemorySanitizer, pipe2) {
707  int* pipefd = new int[2];
708  int res = pipe2(pipefd, O_NONBLOCK);
709  assert(!res);
710  EXPECT_NOT_POISONED(pipefd[0]);
711  EXPECT_NOT_POISONED(pipefd[1]);
712  close(pipefd[0]);
713  close(pipefd[1]);
714}
715
716TEST(MemorySanitizer, socketpair) {
717  int sv[2];
718  int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
719  assert(!res);
720  EXPECT_NOT_POISONED(sv[0]);
721  EXPECT_NOT_POISONED(sv[1]);
722  close(sv[0]);
723  close(sv[1]);
724}
725
726TEST(MemorySanitizer, poll) {
727  int* pipefd = new int[2];
728  int res = pipe(pipefd);
729  ASSERT_EQ(0, res);
730
731  char data = 42;
732  res = write(pipefd[1], &data, 1);
733  ASSERT_EQ(1, res);
734
735  pollfd fds[2];
736  fds[0].fd = pipefd[0];
737  fds[0].events = POLLIN;
738  fds[1].fd = pipefd[1];
739  fds[1].events = POLLIN;
740  res = poll(fds, 2, 500);
741  ASSERT_EQ(1, res);
742  EXPECT_NOT_POISONED(fds[0].revents);
743  EXPECT_NOT_POISONED(fds[1].revents);
744
745  close(pipefd[0]);
746  close(pipefd[1]);
747}
748
749TEST(MemorySanitizer, ppoll) {
750  int* pipefd = new int[2];
751  int res = pipe(pipefd);
752  ASSERT_EQ(0, res);
753
754  char data = 42;
755  res = write(pipefd[1], &data, 1);
756  ASSERT_EQ(1, res);
757
758  pollfd fds[2];
759  fds[0].fd = pipefd[0];
760  fds[0].events = POLLIN;
761  fds[1].fd = pipefd[1];
762  fds[1].events = POLLIN;
763  sigset_t ss;
764  sigemptyset(&ss);
765  res = ppoll(fds, 2, NULL, &ss);
766  ASSERT_EQ(1, res);
767  EXPECT_NOT_POISONED(fds[0].revents);
768  EXPECT_NOT_POISONED(fds[1].revents);
769
770  close(pipefd[0]);
771  close(pipefd[1]);
772}
773
774TEST(MemorySanitizer, poll_positive) {
775  int* pipefd = new int[2];
776  int res = pipe(pipefd);
777  ASSERT_EQ(0, res);
778
779  pollfd fds[2];
780  fds[0].fd = pipefd[0];
781  fds[0].events = POLLIN;
782  // fds[1].fd uninitialized
783  fds[1].events = POLLIN;
784  EXPECT_UMR(poll(fds, 2, 0));
785
786  close(pipefd[0]);
787  close(pipefd[1]);
788}
789
790TEST(MemorySanitizer, bind_getsockname) {
791  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
792
793  struct sockaddr_in sai;
794  memset(&sai, 0, sizeof(sai));
795  sai.sin_family = AF_UNIX;
796  int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai));
797
798  assert(!res);
799  char buf[200];
800  socklen_t addrlen;
801  EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen));
802
803  addrlen = sizeof(buf);
804  res = getsockname(sock, (struct sockaddr *)&buf, &addrlen);
805  EXPECT_NOT_POISONED(addrlen);
806  EXPECT_NOT_POISONED(buf[0]);
807  EXPECT_NOT_POISONED(buf[addrlen - 1]);
808  EXPECT_POISONED(buf[addrlen]);
809  close(sock);
810}
811
812TEST(MemorySanitizer, accept) {
813  int listen_socket = socket(AF_INET, SOCK_STREAM, 0);
814  ASSERT_LT(0, listen_socket);
815
816  struct sockaddr_in sai;
817  sai.sin_family = AF_INET;
818  sai.sin_port = 0;
819  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
820  int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai));
821  ASSERT_EQ(0, res);
822
823  res = listen(listen_socket, 1);
824  ASSERT_EQ(0, res);
825
826  socklen_t sz = sizeof(sai);
827  res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz);
828  ASSERT_EQ(0, res);
829  ASSERT_EQ(sizeof(sai), sz);
830
831  int connect_socket = socket(AF_INET, SOCK_STREAM, 0);
832  ASSERT_LT(0, connect_socket);
833  res = fcntl(connect_socket, F_SETFL, O_NONBLOCK);
834  ASSERT_EQ(0, res);
835  res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai));
836  ASSERT_EQ(-1, res);
837  ASSERT_EQ(EINPROGRESS, errno);
838
839  __msan_poison(&sai, sizeof(sai));
840  int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz);
841  ASSERT_LT(0, new_sock);
842  ASSERT_EQ(sizeof(sai), sz);
843  EXPECT_NOT_POISONED(sai);
844
845  __msan_poison(&sai, sizeof(sai));
846  res = getpeername(new_sock, (struct sockaddr *)&sai, &sz);
847  ASSERT_EQ(0, res);
848  ASSERT_EQ(sizeof(sai), sz);
849  EXPECT_NOT_POISONED(sai);
850
851  close(new_sock);
852  close(connect_socket);
853  close(listen_socket);
854}
855
856TEST(MemorySanitizer, getaddrinfo) {
857  struct addrinfo *ai;
858  struct addrinfo hints;
859  memset(&hints, 0, sizeof(hints));
860  hints.ai_family = AF_INET;
861  int res = getaddrinfo("localhost", NULL, &hints, &ai);
862  ASSERT_EQ(0, res);
863  EXPECT_NOT_POISONED(*ai);
864  ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen);
865  EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr);
866}
867
868TEST(MemorySanitizer, getnameinfo) {
869  struct sockaddr_in sai;
870  sai.sin_family = AF_INET;
871  sai.sin_port = 80;
872  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
873  char host[500];
874  char serv[500];
875  int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host,
876                        sizeof(host), serv, sizeof(serv), 0);
877  ASSERT_EQ(0, res);
878  EXPECT_NOT_POISONED(host[0]);
879  EXPECT_POISONED(host[sizeof(host) - 1]);
880
881  ASSERT_NE(0, strlen(host));
882  EXPECT_NOT_POISONED(serv[0]);
883  EXPECT_POISONED(serv[sizeof(serv) - 1]);
884  ASSERT_NE(0, strlen(serv));
885}
886
887#define EXPECT_HOSTENT_NOT_POISONED(he)        \
888  do {                                         \
889    EXPECT_NOT_POISONED(*(he));                \
890    ASSERT_NE((void *) 0, (he)->h_name);       \
891    ASSERT_NE((void *) 0, (he)->h_aliases);    \
892    ASSERT_NE((void *) 0, (he)->h_addr_list);  \
893    EXPECT_NOT_POISONED(strlen((he)->h_name)); \
894    char **p = (he)->h_aliases;                \
895    while (*p) {                               \
896      EXPECT_NOT_POISONED(strlen(*p));         \
897      ++p;                                     \
898    }                                          \
899    char **q = (he)->h_addr_list;              \
900    while (*q) {                               \
901      EXPECT_NOT_POISONED(*q[0]);              \
902      ++q;                                     \
903    }                                          \
904    EXPECT_NOT_POISONED(*q);                   \
905  } while (0)
906
907TEST(MemorySanitizer, gethostent) {
908  struct hostent *he = gethostent();
909  ASSERT_NE((void *)NULL, he);
910  EXPECT_HOSTENT_NOT_POISONED(he);
911}
912
913#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME
914
915TEST(MemorySanitizer, gethostbyname) {
916  struct hostent *he = gethostbyname("localhost");
917  ASSERT_NE((void *)NULL, he);
918  EXPECT_HOSTENT_NOT_POISONED(he);
919}
920
921#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME
922
923TEST(MemorySanitizer, gethostbyname2) {
924  struct hostent *he = gethostbyname2("localhost", AF_INET);
925  ASSERT_NE((void *)NULL, he);
926  EXPECT_HOSTENT_NOT_POISONED(he);
927}
928
929TEST(MemorySanitizer, gethostbyaddr) {
930  in_addr_t addr = inet_addr("127.0.0.1");
931  EXPECT_NOT_POISONED(addr);
932  struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
933  ASSERT_NE((void *)NULL, he);
934  EXPECT_HOSTENT_NOT_POISONED(he);
935}
936
937TEST(MemorySanitizer, gethostent_r) {
938  char buf[2000];
939  struct hostent he;
940  struct hostent *result;
941  int err;
942  int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
943  ASSERT_EQ(0, res);
944  EXPECT_NOT_POISONED(result);
945  ASSERT_NE((void *)NULL, result);
946  EXPECT_HOSTENT_NOT_POISONED(result);
947  EXPECT_NOT_POISONED(err);
948}
949
950TEST(MemorySanitizer, gethostbyname_r) {
951  char buf[2000];
952  struct hostent he;
953  struct hostent *result;
954  int err;
955  int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
956  ASSERT_EQ(0, res);
957  EXPECT_NOT_POISONED(result);
958  ASSERT_NE((void *)NULL, result);
959  EXPECT_HOSTENT_NOT_POISONED(result);
960  EXPECT_NOT_POISONED(err);
961}
962
963TEST(MemorySanitizer, gethostbyname2_r) {
964  char buf[2000];
965  struct hostent he;
966  struct hostent *result;
967  int err;
968  int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
969                             &result, &err);
970  ASSERT_EQ(0, res);
971  EXPECT_NOT_POISONED(result);
972  ASSERT_NE((void *)NULL, result);
973  EXPECT_HOSTENT_NOT_POISONED(result);
974  EXPECT_NOT_POISONED(err);
975}
976
977TEST(MemorySanitizer, gethostbyaddr_r) {
978  char buf[2000];
979  struct hostent he;
980  struct hostent *result;
981  int err;
982  in_addr_t addr = inet_addr("127.0.0.1");
983  EXPECT_NOT_POISONED(addr);
984  int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
985                            &result, &err);
986  ASSERT_EQ(0, res);
987  EXPECT_NOT_POISONED(result);
988  ASSERT_NE((void *)NULL, result);
989  EXPECT_HOSTENT_NOT_POISONED(result);
990  EXPECT_NOT_POISONED(err);
991}
992
993TEST(MemorySanitizer, getsockopt) {
994  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
995  struct linger l[2];
996  socklen_t sz = sizeof(l[0]);
997  int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
998  ASSERT_EQ(0, res);
999  ASSERT_EQ(sizeof(l[0]), sz);
1000  EXPECT_NOT_POISONED(l[0]);
1001  EXPECT_POISONED(*(char *)(l + 1));
1002}
1003
1004TEST(MemorySanitizer, getcwd) {
1005  char path[PATH_MAX + 1];
1006  char* res = getcwd(path, sizeof(path));
1007  assert(res);
1008  EXPECT_NOT_POISONED(path[0]);
1009}
1010
1011TEST(MemorySanitizer, getcwd_gnu) {
1012  char* res = getcwd(NULL, 0);
1013  assert(res);
1014  EXPECT_NOT_POISONED(res[0]);
1015  free(res);
1016}
1017
1018TEST(MemorySanitizer, get_current_dir_name) {
1019  char* res = get_current_dir_name();
1020  assert(res);
1021  EXPECT_NOT_POISONED(res[0]);
1022  free(res);
1023}
1024
1025TEST(MemorySanitizer, confstr) {
1026  char buf[3];
1027  size_t res = confstr(_CS_PATH, buf, sizeof(buf));
1028  ASSERT_GT(res, sizeof(buf));
1029  EXPECT_NOT_POISONED(buf[0]);
1030  EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]);
1031
1032  char buf2[1000];
1033  res = confstr(_CS_PATH, buf2, sizeof(buf2));
1034  ASSERT_LT(res, sizeof(buf2));
1035  EXPECT_NOT_POISONED(buf2[0]);
1036  EXPECT_NOT_POISONED(buf2[res - 1]);
1037  EXPECT_POISONED(buf2[res]);
1038  ASSERT_EQ(res, strlen(buf2) + 1);
1039}
1040
1041TEST(MemorySanitizer, readdir) {
1042  DIR *dir = opendir(".");
1043  struct dirent *d = readdir(dir);
1044  assert(d);
1045  EXPECT_NOT_POISONED(d->d_name[0]);
1046  closedir(dir);
1047}
1048
1049TEST(MemorySanitizer, readdir_r) {
1050  DIR *dir = opendir(".");
1051  struct dirent d;
1052  struct dirent *pd;
1053  int res = readdir_r(dir, &d, &pd);
1054  assert(!res);
1055  EXPECT_NOT_POISONED(pd);
1056  EXPECT_NOT_POISONED(d.d_name[0]);
1057  closedir(dir);
1058}
1059
1060TEST(MemorySanitizer, realpath) {
1061  const char* relpath = ".";
1062  char path[PATH_MAX + 1];
1063  char* res = realpath(relpath, path);
1064  assert(res);
1065  EXPECT_NOT_POISONED(path[0]);
1066}
1067
1068TEST(MemorySanitizer, realpath_null) {
1069  const char* relpath = ".";
1070  char* res = realpath(relpath, NULL);
1071  printf("%d, %s\n", errno, strerror(errno));
1072  assert(res);
1073  EXPECT_NOT_POISONED(res[0]);
1074  free(res);
1075}
1076
1077TEST(MemorySanitizer, canonicalize_file_name) {
1078  const char* relpath = ".";
1079  char* res = canonicalize_file_name(relpath);
1080  assert(res);
1081  EXPECT_NOT_POISONED(res[0]);
1082  free(res);
1083}
1084
1085extern char **environ;
1086
1087TEST(MemorySanitizer, setenv) {
1088  setenv("AAA", "BBB", 1);
1089  for (char **envp = environ; *envp; ++envp) {
1090    EXPECT_NOT_POISONED(*envp);
1091    EXPECT_NOT_POISONED(*envp[0]);
1092  }
1093}
1094
1095TEST(MemorySanitizer, putenv) {
1096  char s[] = "AAA=BBB";
1097  putenv(s);
1098  for (char **envp = environ; *envp; ++envp) {
1099    EXPECT_NOT_POISONED(*envp);
1100    EXPECT_NOT_POISONED(*envp[0]);
1101  }
1102}
1103
1104TEST(MemorySanitizer, memcpy) {
1105  char* x = new char[2];
1106  char* y = new char[2];
1107  x[0] = 1;
1108  x[1] = *GetPoisoned<char>();
1109  memcpy(y, x, 2);
1110  EXPECT_NOT_POISONED(y[0]);
1111  EXPECT_POISONED(y[1]);
1112}
1113
1114TEST(MemorySanitizer, memmove) {
1115  char* x = new char[2];
1116  char* y = new char[2];
1117  x[0] = 1;
1118  x[1] = *GetPoisoned<char>();
1119  memmove(y, x, 2);
1120  EXPECT_NOT_POISONED(y[0]);
1121  EXPECT_POISONED(y[1]);
1122}
1123
1124TEST(MemorySanitizer, bcopy) {
1125  char* x = new char[2];
1126  char* y = new char[2];
1127  x[0] = 1;
1128  x[1] = *GetPoisoned<char>();
1129  bcopy(x, y, 2);
1130  EXPECT_NOT_POISONED(y[0]);
1131  EXPECT_POISONED(y[1]);
1132}
1133
1134TEST(MemorySanitizer, strdup) {
1135  char buf[4] = "abc";
1136  __msan_poison(buf + 2, sizeof(*buf));
1137  char *x = strdup(buf);
1138  EXPECT_NOT_POISONED(x[0]);
1139  EXPECT_NOT_POISONED(x[1]);
1140  EXPECT_POISONED(x[2]);
1141  EXPECT_NOT_POISONED(x[3]);
1142  free(x);
1143}
1144
1145TEST(MemorySanitizer, strndup) {
1146  char buf[4] = "abc";
1147  __msan_poison(buf + 2, sizeof(*buf));
1148  char *x = strndup(buf, 3);
1149  EXPECT_NOT_POISONED(x[0]);
1150  EXPECT_NOT_POISONED(x[1]);
1151  EXPECT_POISONED(x[2]);
1152  EXPECT_NOT_POISONED(x[3]);
1153  free(x);
1154}
1155
1156TEST(MemorySanitizer, strndup_short) {
1157  char buf[4] = "abc";
1158  __msan_poison(buf + 1, sizeof(*buf));
1159  __msan_poison(buf + 2, sizeof(*buf));
1160  char *x = strndup(buf, 2);
1161  EXPECT_NOT_POISONED(x[0]);
1162  EXPECT_POISONED(x[1]);
1163  EXPECT_NOT_POISONED(x[2]);
1164  free(x);
1165}
1166
1167
1168template<class T, int size>
1169void TestOverlapMemmove() {
1170  T *x = new T[size];
1171  assert(size >= 3);
1172  x[2] = 0;
1173  memmove(x, x + 1, (size - 1) * sizeof(T));
1174  EXPECT_NOT_POISONED(x[1]);
1175  if (!__msan_has_dynamic_component()) {
1176    // FIXME: under DR we will lose this information
1177    // because accesses in memmove will unpoisin the shadow.
1178    // We need to use our own memove implementation instead of libc's.
1179    EXPECT_POISONED(x[0]);
1180    EXPECT_POISONED(x[2]);
1181  }
1182  delete [] x;
1183}
1184
1185TEST(MemorySanitizer, overlap_memmove) {
1186  TestOverlapMemmove<U1, 10>();
1187  TestOverlapMemmove<U1, 1000>();
1188  TestOverlapMemmove<U8, 4>();
1189  TestOverlapMemmove<U8, 1000>();
1190}
1191
1192TEST(MemorySanitizer, strcpy) {  // NOLINT
1193  char* x = new char[3];
1194  char* y = new char[3];
1195  x[0] = 'a';
1196  x[1] = *GetPoisoned<char>(1, 1);
1197  x[2] = 0;
1198  strcpy(y, x);  // NOLINT
1199  EXPECT_NOT_POISONED(y[0]);
1200  EXPECT_POISONED(y[1]);
1201  EXPECT_NOT_POISONED(y[2]);
1202}
1203
1204TEST(MemorySanitizer, strncpy) {  // NOLINT
1205  char* x = new char[3];
1206  char* y = new char[3];
1207  x[0] = 'a';
1208  x[1] = *GetPoisoned<char>(1, 1);
1209  x[2] = 0;
1210  strncpy(y, x, 2);  // NOLINT
1211  EXPECT_NOT_POISONED(y[0]);
1212  EXPECT_POISONED(y[1]);
1213  EXPECT_POISONED(y[2]);
1214}
1215
1216TEST(MemorySanitizer, stpcpy) {  // NOLINT
1217  char* x = new char[3];
1218  char* y = new char[3];
1219  x[0] = 'a';
1220  x[1] = *GetPoisoned<char>(1, 1);
1221  x[2] = 0;
1222  char *res = stpcpy(y, x);  // NOLINT
1223  ASSERT_EQ(res, y + 2);
1224  EXPECT_NOT_POISONED(y[0]);
1225  EXPECT_POISONED(y[1]);
1226  EXPECT_NOT_POISONED(y[2]);
1227}
1228
1229TEST(MemorySanitizer, strtol) {
1230  char *e;
1231  assert(1 == strtol("1", &e, 10));
1232  EXPECT_NOT_POISONED((S8) e);
1233}
1234
1235TEST(MemorySanitizer, strtoll) {
1236  char *e;
1237  assert(1 == strtoll("1", &e, 10));
1238  EXPECT_NOT_POISONED((S8) e);
1239}
1240
1241TEST(MemorySanitizer, strtoul) {
1242  char *e;
1243  assert(1 == strtoul("1", &e, 10));
1244  EXPECT_NOT_POISONED((S8) e);
1245}
1246
1247TEST(MemorySanitizer, strtoull) {
1248  char *e;
1249  assert(1 == strtoull("1", &e, 10));
1250  EXPECT_NOT_POISONED((S8) e);
1251}
1252
1253TEST(MemorySanitizer, strtoimax) {
1254  char *e;
1255  assert(1 == strtoimax("1", &e, 10));
1256  EXPECT_NOT_POISONED((S8) e);
1257}
1258
1259TEST(MemorySanitizer, strtoumax) {
1260  char *e;
1261  assert(1 == strtoumax("1", &e, 10));
1262  EXPECT_NOT_POISONED((S8) e);
1263}
1264
1265TEST(MemorySanitizer, strtod) {
1266  char *e;
1267  assert(0 != strtod("1.5", &e));
1268  EXPECT_NOT_POISONED((S8) e);
1269}
1270
1271TEST(MemorySanitizer, strtof) {
1272  char *e;
1273  assert(0 != strtof("1.5", &e));
1274  EXPECT_NOT_POISONED((S8) e);
1275}
1276
1277TEST(MemorySanitizer, strtold) {
1278  char *e;
1279  assert(0 != strtold("1.5", &e));
1280  EXPECT_NOT_POISONED((S8) e);
1281}
1282
1283TEST(MemorySanitizer, modf) {
1284  double x, y;
1285  x = modf(2.1, &y);
1286  EXPECT_NOT_POISONED(y);
1287}
1288
1289TEST(MemorySanitizer, modff) {
1290  float x, y;
1291  x = modff(2.1, &y);
1292  EXPECT_NOT_POISONED(y);
1293}
1294
1295TEST(MemorySanitizer, modfl) {
1296  long double x, y;
1297  x = modfl(2.1, &y);
1298  EXPECT_NOT_POISONED(y);
1299}
1300
1301TEST(MemorySanitizer, sprintf) {  // NOLINT
1302  char buff[10];
1303  break_optimization(buff);
1304  EXPECT_POISONED(buff[0]);
1305  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1306  assert(res == 7);
1307  assert(buff[0] == '1');
1308  assert(buff[1] == '2');
1309  assert(buff[2] == '3');
1310  assert(buff[6] == '7');
1311  assert(buff[7] == 0);
1312  EXPECT_POISONED(buff[8]);
1313}
1314
1315TEST(MemorySanitizer, snprintf) {
1316  char buff[10];
1317  break_optimization(buff);
1318  EXPECT_POISONED(buff[0]);
1319  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1320  assert(res == 7);
1321  assert(buff[0] == '1');
1322  assert(buff[1] == '2');
1323  assert(buff[2] == '3');
1324  assert(buff[6] == '7');
1325  assert(buff[7] == 0);
1326  EXPECT_POISONED(buff[8]);
1327}
1328
1329TEST(MemorySanitizer, swprintf) {
1330  wchar_t buff[10];
1331  assert(sizeof(wchar_t) == 4);
1332  break_optimization(buff);
1333  EXPECT_POISONED(buff[0]);
1334  int res = swprintf(buff, 9, L"%d", 1234567);
1335  assert(res == 7);
1336  assert(buff[0] == '1');
1337  assert(buff[1] == '2');
1338  assert(buff[2] == '3');
1339  assert(buff[6] == '7');
1340  assert(buff[7] == 0);
1341  EXPECT_POISONED(buff[8]);
1342}
1343
1344TEST(MemorySanitizer, asprintf) {  // NOLINT
1345  char *pbuf;
1346  EXPECT_POISONED(pbuf);
1347  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1348  assert(res == 7);
1349  EXPECT_NOT_POISONED(pbuf);
1350  assert(pbuf[0] == '1');
1351  assert(pbuf[1] == '2');
1352  assert(pbuf[2] == '3');
1353  assert(pbuf[6] == '7');
1354  assert(pbuf[7] == 0);
1355  free(pbuf);
1356}
1357
1358TEST(MemorySanitizer, mbstowcs) {
1359  const char *x = "abc";
1360  wchar_t buff[10];
1361  int res = mbstowcs(buff, x, 2);
1362  EXPECT_EQ(2, res);
1363  EXPECT_EQ(L'a', buff[0]);
1364  EXPECT_EQ(L'b', buff[1]);
1365  EXPECT_POISONED(buff[2]);
1366  res = mbstowcs(buff, x, 10);
1367  EXPECT_EQ(3, res);
1368  EXPECT_NOT_POISONED(buff[3]);
1369}
1370
1371TEST(MemorySanitizer, wcstombs) {
1372  const wchar_t *x = L"abc";
1373  char buff[10];
1374  int res = wcstombs(buff, x, 4);
1375  EXPECT_EQ(res, 3);
1376  EXPECT_EQ(buff[0], 'a');
1377  EXPECT_EQ(buff[1], 'b');
1378  EXPECT_EQ(buff[2], 'c');
1379}
1380
1381TEST(MemorySanitizer, wcsrtombs) {
1382  const wchar_t *x = L"abc";
1383  const wchar_t *p = x;
1384  char buff[10];
1385  mbstate_t mbs;
1386  memset(&mbs, 0, sizeof(mbs));
1387  int res = wcsrtombs(buff, &p, 4, &mbs);
1388  EXPECT_EQ(res, 3);
1389  EXPECT_EQ(buff[0], 'a');
1390  EXPECT_EQ(buff[1], 'b');
1391  EXPECT_EQ(buff[2], 'c');
1392  EXPECT_EQ(buff[3], '\0');
1393  EXPECT_POISONED(buff[4]);
1394}
1395
1396TEST(MemorySanitizer, wcsnrtombs) {
1397  const wchar_t *x = L"abc";
1398  const wchar_t *p = x;
1399  char buff[10];
1400  mbstate_t mbs;
1401  memset(&mbs, 0, sizeof(mbs));
1402  int res = wcsnrtombs(buff, &p, 2, 4, &mbs);
1403  EXPECT_EQ(res, 2);
1404  EXPECT_EQ(buff[0], 'a');
1405  EXPECT_EQ(buff[1], 'b');
1406  EXPECT_POISONED(buff[2]);
1407}
1408
1409TEST(MemorySanitizer, mbtowc) {
1410  const char *x = "abc";
1411  wchar_t wx;
1412  int res = mbtowc(&wx, x, 3);
1413  EXPECT_GT(res, 0);
1414  EXPECT_NOT_POISONED(wx);
1415}
1416
1417TEST(MemorySanitizer, mbrtowc) {
1418  const char *x = "abc";
1419  wchar_t wx;
1420  mbstate_t mbs;
1421  memset(&mbs, 0, sizeof(mbs));
1422  int res = mbrtowc(&wx, x, 3, &mbs);
1423  EXPECT_GT(res, 0);
1424  EXPECT_NOT_POISONED(wx);
1425}
1426
1427TEST(MemorySanitizer, gettimeofday) {
1428  struct timeval tv;
1429  struct timezone tz;
1430  break_optimization(&tv);
1431  break_optimization(&tz);
1432  assert(sizeof(tv) == 16);
1433  assert(sizeof(tz) == 8);
1434  EXPECT_POISONED(tv.tv_sec);
1435  EXPECT_POISONED(tv.tv_usec);
1436  EXPECT_POISONED(tz.tz_minuteswest);
1437  EXPECT_POISONED(tz.tz_dsttime);
1438  assert(0 == gettimeofday(&tv, &tz));
1439  EXPECT_NOT_POISONED(tv.tv_sec);
1440  EXPECT_NOT_POISONED(tv.tv_usec);
1441  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1442  EXPECT_NOT_POISONED(tz.tz_dsttime);
1443}
1444
1445TEST(MemorySanitizer, clock_gettime) {
1446  struct timespec tp;
1447  EXPECT_POISONED(tp.tv_sec);
1448  EXPECT_POISONED(tp.tv_nsec);
1449  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1450  EXPECT_NOT_POISONED(tp.tv_sec);
1451  EXPECT_NOT_POISONED(tp.tv_nsec);
1452}
1453
1454TEST(MemorySanitizer, clock_getres) {
1455  struct timespec tp;
1456  EXPECT_POISONED(tp.tv_sec);
1457  EXPECT_POISONED(tp.tv_nsec);
1458  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1459  EXPECT_POISONED(tp.tv_sec);
1460  EXPECT_POISONED(tp.tv_nsec);
1461  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1462  EXPECT_NOT_POISONED(tp.tv_sec);
1463  EXPECT_NOT_POISONED(tp.tv_nsec);
1464}
1465
1466TEST(MemorySanitizer, getitimer) {
1467  struct itimerval it1, it2;
1468  int res;
1469  EXPECT_POISONED(it1.it_interval.tv_sec);
1470  EXPECT_POISONED(it1.it_interval.tv_usec);
1471  EXPECT_POISONED(it1.it_value.tv_sec);
1472  EXPECT_POISONED(it1.it_value.tv_usec);
1473  res = getitimer(ITIMER_VIRTUAL, &it1);
1474  assert(!res);
1475  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1476  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1477  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1478  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1479
1480  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1481  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1482
1483  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1484  assert(!res);
1485  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1486  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1487  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1488  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1489
1490  // Check that old_value can be 0, and disable the timer.
1491  memset(&it1, 0, sizeof(it1));
1492  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1493  assert(!res);
1494}
1495
1496TEST(MemorySanitizer, setitimer_null) {
1497  setitimer(ITIMER_VIRTUAL, 0, 0);
1498  // Not testing the return value, since it the behaviour seems to differ
1499  // between libc implementations and POSIX.
1500  // Should never crash, though.
1501}
1502
1503TEST(MemorySanitizer, time) {
1504  time_t t;
1505  EXPECT_POISONED(t);
1506  time_t t2 = time(&t);
1507  assert(t2 != (time_t)-1);
1508  EXPECT_NOT_POISONED(t);
1509}
1510
1511TEST(MemorySanitizer, localtime) {
1512  time_t t = 123;
1513  struct tm *time = localtime(&t);
1514  assert(time != 0);
1515  EXPECT_NOT_POISONED(time->tm_sec);
1516  EXPECT_NOT_POISONED(time->tm_hour);
1517  EXPECT_NOT_POISONED(time->tm_year);
1518  EXPECT_NOT_POISONED(time->tm_isdst);
1519}
1520
1521TEST(MemorySanitizer, localtime_r) {
1522  time_t t = 123;
1523  struct tm time;
1524  struct tm *res = localtime_r(&t, &time);
1525  assert(res != 0);
1526  EXPECT_NOT_POISONED(time.tm_sec);
1527  EXPECT_NOT_POISONED(time.tm_hour);
1528  EXPECT_NOT_POISONED(time.tm_year);
1529  EXPECT_NOT_POISONED(time.tm_isdst);
1530}
1531
1532TEST(MemorySanitizer, mmap) {
1533  const int size = 4096;
1534  void *p1, *p2;
1535  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1536  __msan_poison(p1, size);
1537  munmap(p1, size);
1538  for (int i = 0; i < 1000; i++) {
1539    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1540    if (p2 == p1)
1541      break;
1542    else
1543      munmap(p2, size);
1544  }
1545  if (p1 == p2) {
1546    EXPECT_NOT_POISONED(*(char*)p2);
1547    munmap(p2, size);
1548  }
1549}
1550
1551// FIXME: enable and add ecvt.
1552// FIXME: check why msandr does nt handle fcvt.
1553TEST(MemorySanitizer, fcvt) {
1554  int a, b;
1555  break_optimization(&a);
1556  break_optimization(&b);
1557  EXPECT_POISONED(a);
1558  EXPECT_POISONED(b);
1559  char *str = fcvt(12345.6789, 10, &a, &b);
1560  EXPECT_NOT_POISONED(a);
1561  EXPECT_NOT_POISONED(b);
1562}
1563
1564TEST(MemorySanitizer, frexp) {
1565  int x;
1566  x = *GetPoisoned<int>();
1567  double r = frexp(1.1, &x);
1568  EXPECT_NOT_POISONED(r);
1569  EXPECT_NOT_POISONED(x);
1570
1571  x = *GetPoisoned<int>();
1572  float rf = frexpf(1.1, &x);
1573  EXPECT_NOT_POISONED(rf);
1574  EXPECT_NOT_POISONED(x);
1575
1576  x = *GetPoisoned<int>();
1577  double rl = frexpl(1.1, &x);
1578  EXPECT_NOT_POISONED(rl);
1579  EXPECT_NOT_POISONED(x);
1580}
1581
1582namespace {
1583
1584static int cnt;
1585
1586void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1587  assert(signo == SIGPROF);
1588  assert(si);
1589  EXPECT_NOT_POISONED(si->si_errno);
1590  EXPECT_NOT_POISONED(si->si_pid);
1591#if __linux__
1592# if defined(__x86_64__)
1593  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1594# elif defined(__i386__)
1595  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1596# endif
1597#endif
1598  ++cnt;
1599}
1600
1601TEST(MemorySanitizer, sigaction) {
1602  struct sigaction act = {};
1603  struct sigaction oldact = {};
1604  struct sigaction origact = {};
1605
1606  sigaction(SIGPROF, 0, &origact);
1607
1608  act.sa_flags |= SA_SIGINFO;
1609  act.sa_sigaction = &SigactionHandler;
1610  sigaction(SIGPROF, &act, 0);
1611
1612  kill(getpid(), SIGPROF);
1613
1614  act.sa_flags &= ~SA_SIGINFO;
1615  act.sa_handler = SIG_DFL;
1616  sigaction(SIGPROF, &act, 0);
1617
1618  act.sa_flags &= ~SA_SIGINFO;
1619  act.sa_handler = SIG_IGN;
1620  sigaction(SIGPROF, &act, &oldact);
1621  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1622  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1623  kill(getpid(), SIGPROF);
1624
1625  act.sa_flags |= SA_SIGINFO;
1626  act.sa_sigaction = &SigactionHandler;
1627  sigaction(SIGPROF, &act, &oldact);
1628  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1629  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1630  kill(getpid(), SIGPROF);
1631
1632  act.sa_flags &= ~SA_SIGINFO;
1633  act.sa_handler = SIG_DFL;
1634  sigaction(SIGPROF, &act, &oldact);
1635  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1636  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1637  EXPECT_EQ(2, cnt);
1638
1639  sigaction(SIGPROF, &origact, 0);
1640}
1641
1642} // namespace
1643
1644struct StructWithDtor {
1645  ~StructWithDtor();
1646};
1647
1648NOINLINE StructWithDtor::~StructWithDtor() {
1649  break_optimization(0);
1650}
1651
1652TEST(MemorySanitizer, Invoke) {
1653  StructWithDtor s;  // Will cause the calls to become invokes.
1654  EXPECT_NOT_POISONED(0);
1655  EXPECT_POISONED(*GetPoisoned<int>());
1656  EXPECT_NOT_POISONED(0);
1657  EXPECT_POISONED(*GetPoisoned<int>());
1658  EXPECT_POISONED(ReturnPoisoned<S4>());
1659}
1660
1661TEST(MemorySanitizer, ptrtoint) {
1662  // Test that shadow is propagated through pointer-to-integer conversion.
1663  void* p = (void*)0xABCD;
1664  __msan_poison(((char*)&p) + 1, sizeof(p));
1665  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1666
1667  void* q = (void*)0xABCD;
1668  __msan_poison(&q, sizeof(q) - 1);
1669  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1670}
1671
1672static void vaargsfn2(int guard, ...) {
1673  va_list vl;
1674  va_start(vl, guard);
1675  EXPECT_NOT_POISONED(va_arg(vl, int));
1676  EXPECT_NOT_POISONED(va_arg(vl, int));
1677  EXPECT_NOT_POISONED(va_arg(vl, int));
1678  EXPECT_POISONED(va_arg(vl, double));
1679  va_end(vl);
1680}
1681
1682static void vaargsfn(int guard, ...) {
1683  va_list vl;
1684  va_start(vl, guard);
1685  EXPECT_NOT_POISONED(va_arg(vl, int));
1686  EXPECT_POISONED(va_arg(vl, int));
1687  // The following call will overwrite __msan_param_tls.
1688  // Checks after it test that arg shadow was somehow saved across the call.
1689  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1690  EXPECT_NOT_POISONED(va_arg(vl, int));
1691  EXPECT_POISONED(va_arg(vl, int));
1692  va_end(vl);
1693}
1694
1695TEST(MemorySanitizer, VAArgTest) {
1696  int* x = GetPoisoned<int>();
1697  int* y = GetPoisoned<int>(4);
1698  vaargsfn(1, 13, *x, 42, *y);
1699}
1700
1701static void vaargsfn_many(int guard, ...) {
1702  va_list vl;
1703  va_start(vl, guard);
1704  EXPECT_NOT_POISONED(va_arg(vl, int));
1705  EXPECT_POISONED(va_arg(vl, int));
1706  EXPECT_NOT_POISONED(va_arg(vl, int));
1707  EXPECT_NOT_POISONED(va_arg(vl, int));
1708  EXPECT_NOT_POISONED(va_arg(vl, int));
1709  EXPECT_NOT_POISONED(va_arg(vl, int));
1710  EXPECT_NOT_POISONED(va_arg(vl, int));
1711  EXPECT_NOT_POISONED(va_arg(vl, int));
1712  EXPECT_NOT_POISONED(va_arg(vl, int));
1713  EXPECT_POISONED(va_arg(vl, int));
1714  va_end(vl);
1715}
1716
1717TEST(MemorySanitizer, VAArgManyTest) {
1718  int* x = GetPoisoned<int>();
1719  int* y = GetPoisoned<int>(4);
1720  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1721}
1722
1723static void vaargsfn_pass2(va_list vl) {
1724  EXPECT_NOT_POISONED(va_arg(vl, int));
1725  EXPECT_NOT_POISONED(va_arg(vl, int));
1726  EXPECT_POISONED(va_arg(vl, int));
1727}
1728
1729static void vaargsfn_pass(int guard, ...) {
1730  va_list vl;
1731  va_start(vl, guard);
1732  EXPECT_POISONED(va_arg(vl, int));
1733  vaargsfn_pass2(vl);
1734  va_end(vl);
1735}
1736
1737TEST(MemorySanitizer, VAArgPass) {
1738  int* x = GetPoisoned<int>();
1739  int* y = GetPoisoned<int>(4);
1740  vaargsfn_pass(1, *x, 2, 3, *y);
1741}
1742
1743static void vaargsfn_copy2(va_list vl) {
1744  EXPECT_NOT_POISONED(va_arg(vl, int));
1745  EXPECT_POISONED(va_arg(vl, int));
1746}
1747
1748static void vaargsfn_copy(int guard, ...) {
1749  va_list vl;
1750  va_start(vl, guard);
1751  EXPECT_NOT_POISONED(va_arg(vl, int));
1752  EXPECT_POISONED(va_arg(vl, int));
1753  va_list vl2;
1754  va_copy(vl2, vl);
1755  vaargsfn_copy2(vl2);
1756  EXPECT_NOT_POISONED(va_arg(vl, int));
1757  EXPECT_POISONED(va_arg(vl, int));
1758  va_end(vl);
1759}
1760
1761TEST(MemorySanitizer, VAArgCopy) {
1762  int* x = GetPoisoned<int>();
1763  int* y = GetPoisoned<int>(4);
1764  vaargsfn_copy(1, 2, *x, 3, *y);
1765}
1766
1767static void vaargsfn_ptr(int guard, ...) {
1768  va_list vl;
1769  va_start(vl, guard);
1770  EXPECT_NOT_POISONED(va_arg(vl, int*));
1771  EXPECT_POISONED(va_arg(vl, int*));
1772  EXPECT_NOT_POISONED(va_arg(vl, int*));
1773  EXPECT_POISONED(va_arg(vl, double*));
1774  va_end(vl);
1775}
1776
1777TEST(MemorySanitizer, VAArgPtr) {
1778  int** x = GetPoisoned<int*>();
1779  double** y = GetPoisoned<double*>(8);
1780  int z;
1781  vaargsfn_ptr(1, &z, *x, &z, *y);
1782}
1783
1784static void vaargsfn_overflow(int guard, ...) {
1785  va_list vl;
1786  va_start(vl, guard);
1787  EXPECT_NOT_POISONED(va_arg(vl, int));
1788  EXPECT_NOT_POISONED(va_arg(vl, int));
1789  EXPECT_POISONED(va_arg(vl, int));
1790  EXPECT_NOT_POISONED(va_arg(vl, int));
1791  EXPECT_NOT_POISONED(va_arg(vl, int));
1792  EXPECT_NOT_POISONED(va_arg(vl, int));
1793
1794  EXPECT_NOT_POISONED(va_arg(vl, double));
1795  EXPECT_NOT_POISONED(va_arg(vl, double));
1796  EXPECT_NOT_POISONED(va_arg(vl, double));
1797  EXPECT_POISONED(va_arg(vl, double));
1798  EXPECT_NOT_POISONED(va_arg(vl, double));
1799  EXPECT_POISONED(va_arg(vl, int*));
1800  EXPECT_NOT_POISONED(va_arg(vl, double));
1801  EXPECT_NOT_POISONED(va_arg(vl, double));
1802
1803  EXPECT_POISONED(va_arg(vl, int));
1804  EXPECT_POISONED(va_arg(vl, double));
1805  EXPECT_POISONED(va_arg(vl, int*));
1806
1807  EXPECT_NOT_POISONED(va_arg(vl, int));
1808  EXPECT_NOT_POISONED(va_arg(vl, double));
1809  EXPECT_NOT_POISONED(va_arg(vl, int*));
1810
1811  EXPECT_POISONED(va_arg(vl, int));
1812  EXPECT_POISONED(va_arg(vl, double));
1813  EXPECT_POISONED(va_arg(vl, int*));
1814
1815  va_end(vl);
1816}
1817
1818TEST(MemorySanitizer, VAArgOverflow) {
1819  int* x = GetPoisoned<int>();
1820  double* y = GetPoisoned<double>(8);
1821  int** p = GetPoisoned<int*>(16);
1822  int z;
1823  vaargsfn_overflow(1,
1824      1, 2, *x, 4, 5, 6,
1825      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1826      // the following args will overflow for sure
1827      *x, *y, *p,
1828      7, 9.9, &z,
1829      *x, *y, *p);
1830}
1831
1832static void vaargsfn_tlsoverwrite2(int guard, ...) {
1833  va_list vl;
1834  va_start(vl, guard);
1835  for (int i = 0; i < 20; ++i)
1836    EXPECT_NOT_POISONED(va_arg(vl, int));
1837  va_end(vl);
1838}
1839
1840static void vaargsfn_tlsoverwrite(int guard, ...) {
1841  // This call will overwrite TLS contents unless it's backed up somewhere.
1842  vaargsfn_tlsoverwrite2(2,
1843      42, 42, 42, 42, 42,
1844      42, 42, 42, 42, 42,
1845      42, 42, 42, 42, 42,
1846      42, 42, 42, 42, 42); // 20x
1847  va_list vl;
1848  va_start(vl, guard);
1849  for (int i = 0; i < 20; ++i)
1850    EXPECT_POISONED(va_arg(vl, int));
1851  va_end(vl);
1852}
1853
1854TEST(MemorySanitizer, VAArgTLSOverwrite) {
1855  int* x = GetPoisoned<int>();
1856  vaargsfn_tlsoverwrite(1,
1857      *x, *x, *x, *x, *x,
1858      *x, *x, *x, *x, *x,
1859      *x, *x, *x, *x, *x,
1860      *x, *x, *x, *x, *x); // 20x
1861
1862}
1863
1864struct StructByVal {
1865  int a, b, c, d, e, f;
1866};
1867
1868NOINLINE void StructByValTestFunc(struct StructByVal s) {
1869  EXPECT_NOT_POISONED(s.a);
1870  EXPECT_POISONED(s.b);
1871  EXPECT_NOT_POISONED(s.c);
1872  EXPECT_POISONED(s.d);
1873  EXPECT_NOT_POISONED(s.e);
1874  EXPECT_POISONED(s.f);
1875}
1876
1877NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1878  StructByValTestFunc(s);
1879}
1880
1881NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1882  StructByValTestFunc(s);
1883}
1884
1885TEST(MemorySanitizer, StructByVal) {
1886  // Large aggregates are passed as "byval" pointer argument in LLVM.
1887  struct StructByVal s;
1888  s.a = 1;
1889  s.b = *GetPoisoned<int>();
1890  s.c = 2;
1891  s.d = *GetPoisoned<int>();
1892  s.e = 3;
1893  s.f = *GetPoisoned<int>();
1894  StructByValTestFunc(s);
1895  StructByValTestFunc1(s);
1896  StructByValTestFunc2(0, s);
1897}
1898
1899
1900#if MSAN_HAS_M128
1901NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1902NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1903TEST(MemorySanitizer, m128) {
1904  __m128i a = _mm_set1_epi16(0x1234);
1905  __m128i b = _mm_set1_epi16(0x7890);
1906  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1907  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1908}
1909// FIXME: add more tests for __m128i.
1910#endif  // MSAN_HAS_M128
1911
1912// We should not complain when copying this poisoned hole.
1913struct StructWithHole {
1914  U4  a;
1915  // 4-byte hole.
1916  U8  b;
1917};
1918
1919NOINLINE StructWithHole ReturnStructWithHole() {
1920  StructWithHole res;
1921  __msan_poison(&res, sizeof(res));
1922  res.a = 1;
1923  res.b = 2;
1924  return res;
1925}
1926
1927TEST(MemorySanitizer, StructWithHole) {
1928  StructWithHole a = ReturnStructWithHole();
1929  break_optimization(&a);
1930}
1931
1932template <class T>
1933NOINLINE T ReturnStruct() {
1934  T res;
1935  __msan_poison(&res, sizeof(res));
1936  res.a = 1;
1937  return res;
1938}
1939
1940template <class T>
1941NOINLINE void TestReturnStruct() {
1942  T s1 = ReturnStruct<T>();
1943  EXPECT_NOT_POISONED(s1.a);
1944  EXPECT_POISONED(s1.b);
1945}
1946
1947struct SSS1 {
1948  int a, b, c;
1949};
1950struct SSS2 {
1951  int b, a, c;
1952};
1953struct SSS3 {
1954  int b, c, a;
1955};
1956struct SSS4 {
1957  int c, b, a;
1958};
1959
1960struct SSS5 {
1961  int a;
1962  float b;
1963};
1964struct SSS6 {
1965  int a;
1966  double b;
1967};
1968struct SSS7 {
1969  S8 b;
1970  int a;
1971};
1972struct SSS8 {
1973  S2 b;
1974  S8 a;
1975};
1976
1977TEST(MemorySanitizer, IntStruct3) {
1978  TestReturnStruct<SSS1>();
1979  TestReturnStruct<SSS2>();
1980  TestReturnStruct<SSS3>();
1981  TestReturnStruct<SSS4>();
1982  TestReturnStruct<SSS5>();
1983  TestReturnStruct<SSS6>();
1984  TestReturnStruct<SSS7>();
1985  TestReturnStruct<SSS8>();
1986}
1987
1988struct LongStruct {
1989  U1 a1, b1;
1990  U2 a2, b2;
1991  U4 a4, b4;
1992  U8 a8, b8;
1993};
1994
1995NOINLINE LongStruct ReturnLongStruct1() {
1996  LongStruct res;
1997  __msan_poison(&res, sizeof(res));
1998  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1999  // leaves b1, .., b8 poisoned.
2000  return res;
2001}
2002
2003NOINLINE LongStruct ReturnLongStruct2() {
2004  LongStruct res;
2005  __msan_poison(&res, sizeof(res));
2006  res.b1 = res.b2 = res.b4 = res.b8 = 111;
2007  // leaves a1, .., a8 poisoned.
2008  return res;
2009}
2010
2011TEST(MemorySanitizer, LongStruct) {
2012  LongStruct s1 = ReturnLongStruct1();
2013  __msan_print_shadow(&s1, sizeof(s1));
2014  EXPECT_NOT_POISONED(s1.a1);
2015  EXPECT_NOT_POISONED(s1.a2);
2016  EXPECT_NOT_POISONED(s1.a4);
2017  EXPECT_NOT_POISONED(s1.a8);
2018
2019  EXPECT_POISONED(s1.b1);
2020  EXPECT_POISONED(s1.b2);
2021  EXPECT_POISONED(s1.b4);
2022  EXPECT_POISONED(s1.b8);
2023
2024  LongStruct s2 = ReturnLongStruct2();
2025  __msan_print_shadow(&s2, sizeof(s2));
2026  EXPECT_NOT_POISONED(s2.b1);
2027  EXPECT_NOT_POISONED(s2.b2);
2028  EXPECT_NOT_POISONED(s2.b4);
2029  EXPECT_NOT_POISONED(s2.b8);
2030
2031  EXPECT_POISONED(s2.a1);
2032  EXPECT_POISONED(s2.a2);
2033  EXPECT_POISONED(s2.a4);
2034  EXPECT_POISONED(s2.a8);
2035}
2036
2037TEST(MemorySanitizer, getrlimit) {
2038  struct rlimit limit;
2039  __msan_poison(&limit, sizeof(limit));
2040  int result = getrlimit(RLIMIT_DATA, &limit);
2041  assert(result == 0);
2042  EXPECT_NOT_POISONED(limit.rlim_cur);
2043  EXPECT_NOT_POISONED(limit.rlim_max);
2044}
2045
2046TEST(MemorySanitizer, getrusage) {
2047  struct rusage usage;
2048  __msan_poison(&usage, sizeof(usage));
2049  int result = getrusage(RUSAGE_SELF, &usage);
2050  assert(result == 0);
2051  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
2052  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
2053  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
2054  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
2055  EXPECT_NOT_POISONED(usage.ru_maxrss);
2056  EXPECT_NOT_POISONED(usage.ru_minflt);
2057  EXPECT_NOT_POISONED(usage.ru_majflt);
2058  EXPECT_NOT_POISONED(usage.ru_inblock);
2059  EXPECT_NOT_POISONED(usage.ru_oublock);
2060  EXPECT_NOT_POISONED(usage.ru_nvcsw);
2061  EXPECT_NOT_POISONED(usage.ru_nivcsw);
2062}
2063
2064#ifdef __GLIBC__
2065extern char *program_invocation_name;
2066#else  // __GLIBC__
2067# error "TODO: port this"
2068#endif
2069
2070static void dladdr_testfn() {}
2071
2072TEST(MemorySanitizer, dladdr) {
2073  Dl_info info;
2074  __msan_poison(&info, sizeof(info));
2075  int result = dladdr((const void*)dladdr_testfn, &info);
2076  assert(result != 0);
2077  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
2078  if (info.dli_fname)
2079    EXPECT_NOT_POISONED(strlen(info.dli_fname));
2080  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
2081  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
2082  if (info.dli_sname)
2083    EXPECT_NOT_POISONED(strlen(info.dli_sname));
2084  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
2085}
2086
2087#ifndef MSAN_TEST_DISABLE_DLOPEN
2088
2089static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
2090  (*(int *)data)++;
2091  EXPECT_NOT_POISONED(info->dlpi_addr);
2092  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
2093  EXPECT_NOT_POISONED(info->dlpi_phnum);
2094  for (int i = 0; i < info->dlpi_phnum; ++i)
2095    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
2096  return 0;
2097}
2098
2099// Compute the path to our loadable DSO.  We assume it's in the same
2100// directory.  Only use string routines that we intercept so far to do this.
2101static int PathToLoadable(char *buf, size_t sz) {
2102  const char *basename = "libmsan_loadable.x86_64.so";
2103  char *argv0 = program_invocation_name;
2104  char *last_slash = strrchr(argv0, '/');
2105  assert(last_slash);
2106  int res =
2107      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
2108  return res < sz ? 0 : res;
2109}
2110
2111TEST(MemorySanitizer, dl_iterate_phdr) {
2112  char path[4096];
2113  int res = PathToLoadable(path, sizeof(path));
2114  assert(!res);
2115
2116  // Having at least one dlopen'ed library in the process makes this more
2117  // entertaining.
2118  void *lib = dlopen(path, RTLD_LAZY);
2119  ASSERT_NE((void*)0, lib);
2120
2121  int count = 0;
2122  int result = dl_iterate_phdr(dl_phdr_callback, &count);
2123  assert(count > 0);
2124
2125  dlclose(lib);
2126}
2127
2128
2129TEST(MemorySanitizer, dlopen) {
2130  char path[4096];
2131  int res = PathToLoadable(path, sizeof(path));
2132  assert(!res);
2133
2134  // We need to clear shadow for globals when doing dlopen.  In order to test
2135  // this, we have to poison the shadow for the DSO before we load it.  In
2136  // general this is difficult, but the loader tends to reload things in the
2137  // same place, so we open, close, and then reopen.  The global should always
2138  // start out clean after dlopen.
2139  for (int i = 0; i < 2; i++) {
2140    void *lib = dlopen(path, RTLD_LAZY);
2141    if (lib == NULL) {
2142      printf("dlerror: %s\n", dlerror());
2143      assert(lib != NULL);
2144    }
2145    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
2146    assert(get_dso_global);
2147    void **dso_global = get_dso_global();
2148    EXPECT_NOT_POISONED(*dso_global);
2149    __msan_poison(dso_global, sizeof(*dso_global));
2150    EXPECT_POISONED(*dso_global);
2151    dlclose(lib);
2152  }
2153}
2154
2155// Regression test for a crash in dlopen() interceptor.
2156TEST(MemorySanitizer, dlopenFailed) {
2157  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
2158  void *lib = dlopen(path, RTLD_LAZY);
2159  ASSERT_EQ(0, lib);
2160}
2161
2162#endif // MSAN_TEST_DISABLE_DLOPEN
2163
2164TEST(MemorySanitizer, sched_getaffinity) {
2165  cpu_set_t mask;
2166  int res = sched_getaffinity(getpid(), sizeof(mask), &mask);
2167  ASSERT_EQ(0, res);
2168  EXPECT_NOT_POISONED(mask);
2169}
2170
2171TEST(MemorySanitizer, scanf) {
2172  const char *input = "42 hello";
2173  int* d = new int;
2174  char* s = new char[7];
2175  int res = sscanf(input, "%d %5s", d, s);
2176  printf("res %d\n", res);
2177  assert(res == 2);
2178  EXPECT_NOT_POISONED(*d);
2179  EXPECT_NOT_POISONED(s[0]);
2180  EXPECT_NOT_POISONED(s[1]);
2181  EXPECT_NOT_POISONED(s[2]);
2182  EXPECT_NOT_POISONED(s[3]);
2183  EXPECT_NOT_POISONED(s[4]);
2184  EXPECT_NOT_POISONED(s[5]);
2185  EXPECT_POISONED(s[6]);
2186  delete s;
2187  delete d;
2188}
2189
2190static void *SimpleThread_threadfn(void* data) {
2191  return new int;
2192}
2193
2194TEST(MemorySanitizer, SimpleThread) {
2195  pthread_t t;
2196  void *p;
2197  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
2198  assert(!res);
2199  EXPECT_NOT_POISONED(t);
2200  res = pthread_join(t, &p);
2201  assert(!res);
2202  EXPECT_NOT_POISONED(p);
2203  delete (int*)p;
2204}
2205
2206static void *SmallStackThread_threadfn(void* data) {
2207  return 0;
2208}
2209
2210TEST(MemorySanitizer, SmallStackThread) {
2211  pthread_attr_t attr;
2212  pthread_t t;
2213  void *p;
2214  int res;
2215  res = pthread_attr_init(&attr);
2216  ASSERT_EQ(0, res);
2217  res = pthread_attr_setstacksize(&attr, 64 * 1024);
2218  ASSERT_EQ(0, res);
2219  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2220  ASSERT_EQ(0, res);
2221  res = pthread_join(t, &p);
2222  ASSERT_EQ(0, res);
2223  res = pthread_attr_destroy(&attr);
2224  ASSERT_EQ(0, res);
2225}
2226
2227TEST(MemorySanitizer, PreAllocatedStackThread) {
2228  pthread_attr_t attr;
2229  pthread_t t;
2230  int res;
2231  res = pthread_attr_init(&attr);
2232  ASSERT_EQ(0, res);
2233  void *stack;
2234  const size_t kStackSize = 64 * 1024;
2235  res = posix_memalign(&stack, 4096, kStackSize);
2236  ASSERT_EQ(0, res);
2237  res = pthread_attr_setstack(&attr, stack, kStackSize);
2238  ASSERT_EQ(0, res);
2239  // A small self-allocated stack can not be extended by the tool.
2240  // In this case pthread_create is expected to fail.
2241  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2242  EXPECT_NE(0, res);
2243  res = pthread_attr_destroy(&attr);
2244  ASSERT_EQ(0, res);
2245}
2246
2247TEST(MemorySanitizer, pthread_getschedparam) {
2248  int policy;
2249  struct sched_param param;
2250  int res = pthread_getschedparam(pthread_self(), &policy, &param);
2251  ASSERT_EQ(0, res);
2252  EXPECT_NOT_POISONED(policy);
2253  EXPECT_NOT_POISONED(param.sched_priority);
2254}
2255
2256TEST(MemorySanitizer, pthread_key_create) {
2257  pthread_key_t key;
2258  int res = pthread_key_create(&key, NULL);
2259  assert(!res);
2260  EXPECT_NOT_POISONED(key);
2261  res = pthread_key_delete(key);
2262  assert(!res);
2263}
2264
2265TEST(MemorySanitizer, posix_memalign) {
2266  void *p;
2267  EXPECT_POISONED(p);
2268  int res = posix_memalign(&p, 4096, 13);
2269  ASSERT_EQ(0, res);
2270  EXPECT_NOT_POISONED(p);
2271  EXPECT_EQ(0U, (uintptr_t)p % 4096);
2272  free(p);
2273}
2274
2275TEST(MemorySanitizer, memalign) {
2276  void *p = memalign(4096, 13);
2277  EXPECT_EQ(0U, (uintptr_t)p % kPageSize);
2278  free(p);
2279}
2280
2281TEST(MemorySanitizer, valloc) {
2282  void *a = valloc(100);
2283  EXPECT_EQ(0U, (uintptr_t)a % kPageSize);
2284  free(a);
2285}
2286
2287TEST(MemorySanitizer, pvalloc) {
2288  void *p = pvalloc(kPageSize + 100);
2289  EXPECT_EQ(0U, (uintptr_t)p % kPageSize);
2290  EXPECT_EQ(2 * kPageSize, __msan_get_allocated_size(p));
2291  free(p);
2292
2293  p = pvalloc(0);  // pvalloc(0) should allocate at least one page.
2294  EXPECT_EQ(0U, (uintptr_t)p % kPageSize);
2295  EXPECT_EQ(kPageSize, __msan_get_allocated_size(p));
2296  free(p);
2297}
2298
2299TEST(MemorySanitizer, inet_pton) {
2300  const char *s = "1:0:0:0:0:0:0:8";
2301  unsigned char buf[sizeof(struct in6_addr)];
2302  int res = inet_pton(AF_INET6, s, buf);
2303  ASSERT_EQ(1, res);
2304  EXPECT_NOT_POISONED(buf[0]);
2305  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
2306
2307  char s_out[INET6_ADDRSTRLEN];
2308  EXPECT_POISONED(s_out[3]);
2309  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
2310  ASSERT_NE((void*)0, q);
2311  EXPECT_NOT_POISONED(s_out[3]);
2312}
2313
2314TEST(MemorySanitizer, inet_aton) {
2315  const char *s = "127.0.0.1";
2316  struct in_addr in[2];
2317  int res = inet_aton(s, in);
2318  ASSERT_NE(0, res);
2319  EXPECT_NOT_POISONED(in[0]);
2320  EXPECT_POISONED(*(char *)(in + 1));
2321}
2322
2323TEST(MemorySanitizer, uname) {
2324  struct utsname u;
2325  int res = uname(&u);
2326  assert(!res);
2327  EXPECT_NOT_POISONED(strlen(u.sysname));
2328  EXPECT_NOT_POISONED(strlen(u.nodename));
2329  EXPECT_NOT_POISONED(strlen(u.release));
2330  EXPECT_NOT_POISONED(strlen(u.version));
2331  EXPECT_NOT_POISONED(strlen(u.machine));
2332}
2333
2334TEST(MemorySanitizer, gethostname) {
2335  char buf[100];
2336  int res = gethostname(buf, 100);
2337  assert(!res);
2338  EXPECT_NOT_POISONED(strlen(buf));
2339}
2340
2341TEST(MemorySanitizer, sysinfo) {
2342  struct sysinfo info;
2343  int res = sysinfo(&info);
2344  assert(!res);
2345  EXPECT_NOT_POISONED(info);
2346}
2347
2348TEST(MemorySanitizer, getpwuid) {
2349  struct passwd *p = getpwuid(0); // root
2350  assert(p);
2351  EXPECT_NOT_POISONED(p->pw_name);
2352  assert(p->pw_name);
2353  EXPECT_NOT_POISONED(p->pw_name[0]);
2354  EXPECT_NOT_POISONED(p->pw_uid);
2355  assert(p->pw_uid == 0);
2356}
2357
2358TEST(MemorySanitizer, getpwnam_r) {
2359  struct passwd pwd;
2360  struct passwd *pwdres;
2361  char buf[10000];
2362  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
2363  assert(!res);
2364  EXPECT_NOT_POISONED(pwd.pw_name);
2365  assert(pwd.pw_name);
2366  EXPECT_NOT_POISONED(pwd.pw_name[0]);
2367  EXPECT_NOT_POISONED(pwd.pw_uid);
2368  assert(pwd.pw_uid == 0);
2369}
2370
2371TEST(MemorySanitizer, getpwnam_r_positive) {
2372  struct passwd pwd;
2373  struct passwd *pwdres;
2374  char s[5];
2375  strncpy(s, "abcd", 5);
2376  __msan_poison(s, 5);
2377  char buf[10000];
2378  int res;
2379  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2380}
2381
2382TEST(MemorySanitizer, getgrnam_r) {
2383  struct group grp;
2384  struct group *grpres;
2385  char buf[10000];
2386  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2387  assert(!res);
2388  EXPECT_NOT_POISONED(grp.gr_name);
2389  assert(grp.gr_name);
2390  EXPECT_NOT_POISONED(grp.gr_name[0]);
2391  EXPECT_NOT_POISONED(grp.gr_gid);
2392}
2393
2394TEST(MemorySanitizer, getgroups) {
2395  int n = getgroups(0, 0);
2396  gid_t *gids = new gid_t[n];
2397  int res = getgroups(n, gids);
2398  ASSERT_EQ(n, res);
2399  for (int i = 0; i < n; ++i)
2400    EXPECT_NOT_POISONED(gids[i]);
2401}
2402
2403template<class T>
2404static bool applySlt(T value, T shadow) {
2405  __msan_partial_poison(&value, &shadow, sizeof(T));
2406  volatile bool zzz = true;
2407  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2408  // a shift-and-trunc to get at the highest bit.
2409  volatile bool v = value < 0 || zzz;
2410  return v;
2411}
2412
2413TEST(MemorySanitizer, SignedCompareWithZero) {
2414  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2415  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2416  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2417  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2418  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2419  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2420}
2421
2422template <class T, class S>
2423static T poisoned(T Va, S Sa) {
2424  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2425  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2426  T a;
2427  a = Va;
2428  __msan_partial_poison(&a, &Sa, sizeof(T));
2429  return a;
2430}
2431
2432TEST(MemorySanitizer, ICmpRelational) {
2433  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2434  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2435  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2436  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2437  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2438  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2439                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2440  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2441                  poisoned(-1, 0xFFFFFFFFU));
2442
2443  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2444  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2445  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2446  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2447  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2448  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2449                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2450  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2451                  poisoned(-1, 0xFFFFFFFFU));
2452
2453  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2454  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2455  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2456  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2457  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2458  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2459                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2460  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2461                  poisoned(-1, 0xFFFFFFFFU));
2462
2463  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2464  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2465  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2466  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2467  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2468  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2469                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2470  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2471                  poisoned(-1, 0xFFFFFFFFU));
2472
2473  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2474  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2475
2476  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2477}
2478
2479#if MSAN_HAS_M128
2480TEST(MemorySanitizer, ICmpVectorRelational) {
2481  EXPECT_NOT_POISONED(
2482      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2483                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2484  EXPECT_NOT_POISONED(
2485      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2486                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2487  EXPECT_POISONED(
2488      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2489                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2490  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2491                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2492}
2493#endif
2494
2495// Volatile bitfield store is implemented as load-mask-store
2496// Test that we don't warn on the store of (uninitialized) padding.
2497struct VolatileBitfieldStruct {
2498  volatile unsigned x : 1;
2499  unsigned y : 1;
2500};
2501
2502TEST(MemorySanitizer, VolatileBitfield) {
2503  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2504  S->x = 1;
2505  EXPECT_NOT_POISONED((unsigned)S->x);
2506  EXPECT_POISONED((unsigned)S->y);
2507}
2508
2509TEST(MemorySanitizer, UnalignedLoad) {
2510  char x[32];
2511  memset(x + 8, 0, 16);
2512  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2513  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2514  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2515  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2516  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2517  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2518  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2519
2520  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2521  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2522  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2523  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2524  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2525  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2526  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2527
2528  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2529  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2530  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2531  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2532  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2533  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2534  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2535  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2536  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2537}
2538
2539TEST(MemorySanitizer, UnalignedStore16) {
2540  char x[5];
2541  U2 y = 0;
2542  __msan_poison(&y, 1);
2543  __sanitizer_unaligned_store16(x + 1, y);
2544  EXPECT_POISONED(x[0]);
2545  EXPECT_POISONED(x[1]);
2546  EXPECT_NOT_POISONED(x[2]);
2547  EXPECT_POISONED(x[3]);
2548  EXPECT_POISONED(x[4]);
2549}
2550
2551TEST(MemorySanitizer, UnalignedStore32) {
2552  char x[8];
2553  U4 y4 = 0;
2554  __msan_poison(&y4, 2);
2555  __sanitizer_unaligned_store32(x+3, y4);
2556  EXPECT_POISONED(x[0]);
2557  EXPECT_POISONED(x[1]);
2558  EXPECT_POISONED(x[2]);
2559  EXPECT_POISONED(x[3]);
2560  EXPECT_POISONED(x[4]);
2561  EXPECT_NOT_POISONED(x[5]);
2562  EXPECT_NOT_POISONED(x[6]);
2563  EXPECT_POISONED(x[7]);
2564}
2565
2566TEST(MemorySanitizer, UnalignedStore64) {
2567  char x[16];
2568  U8 y = 0;
2569  __msan_poison(&y, 3);
2570  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2571  __sanitizer_unaligned_store64(x+3, y);
2572  EXPECT_POISONED(x[0]);
2573  EXPECT_POISONED(x[1]);
2574  EXPECT_POISONED(x[2]);
2575  EXPECT_POISONED(x[3]);
2576  EXPECT_POISONED(x[4]);
2577  EXPECT_POISONED(x[5]);
2578  EXPECT_NOT_POISONED(x[6]);
2579  EXPECT_NOT_POISONED(x[7]);
2580  EXPECT_NOT_POISONED(x[8]);
2581  EXPECT_POISONED(x[9]);
2582  EXPECT_NOT_POISONED(x[10]);
2583  EXPECT_POISONED(x[11]);
2584}
2585
2586TEST(MemorySanitizerDr, StoreInDSOTest) {
2587  if (!__msan_has_dynamic_component()) return;
2588  char* s = new char[10];
2589  dso_memfill(s, 9);
2590  EXPECT_NOT_POISONED(s[5]);
2591  EXPECT_POISONED(s[9]);
2592}
2593
2594int return_poisoned_int() {
2595  return ReturnPoisoned<U8>();
2596}
2597
2598TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2599  if (!__msan_has_dynamic_component()) return;
2600  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2601}
2602
2603NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2604  EXPECT_POISONED(x);
2605  EXPECT_POISONED(y);
2606  EXPECT_POISONED(z);
2607  return 0;
2608}
2609
2610static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2611  EXPECT_NOT_POISONED(x);
2612  EXPECT_NOT_POISONED(y);
2613  EXPECT_NOT_POISONED(z);
2614  return 0;
2615}
2616
2617TEST(MemorySanitizerDr, CallFromDSOTest) {
2618  if (!__msan_has_dynamic_component()) return;
2619  S8* x = GetPoisoned<S8>();
2620  S8* y = GetPoisoned<S8>();
2621  S8* z = GetPoisoned<S8>();
2622  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2623  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2624}
2625
2626static void StackStoreInDSOFn(int* x, int* y) {
2627  EXPECT_NOT_POISONED(*x);
2628  EXPECT_NOT_POISONED(*y);
2629}
2630
2631TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2632  if (!__msan_has_dynamic_component()) return;
2633  dso_stack_store(StackStoreInDSOFn, 1);
2634}
2635
2636TEST(MemorySanitizerOrigins, SetGet) {
2637  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2638  if (!TrackingOrigins()) return;
2639  int x;
2640  __msan_set_origin(&x, sizeof(x), 1234);
2641  EXPECT_EQ(1234, __msan_get_origin(&x));
2642  __msan_set_origin(&x, sizeof(x), 5678);
2643  EXPECT_EQ(5678, __msan_get_origin(&x));
2644  __msan_set_origin(&x, sizeof(x), 0);
2645  EXPECT_EQ(0, __msan_get_origin(&x));
2646}
2647
2648namespace {
2649struct S {
2650  U4 dummy;
2651  U2 a;
2652  U2 b;
2653};
2654
2655// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2656TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2657  if (!TrackingOrigins()) return;
2658
2659  S s;
2660  U4 origin = rand();  // NOLINT
2661  s.a = *GetPoisonedO<U2>(0, origin);
2662  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2663  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2664
2665  s.b = 42;
2666  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2667  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2668}
2669}  // namespace
2670
2671template<class T, class BinaryOp>
2672INLINE
2673void BinaryOpOriginTest(BinaryOp op) {
2674  U4 ox = rand();  //NOLINT
2675  U4 oy = rand();  //NOLINT
2676  T *x = GetPoisonedO<T>(0, ox, 0);
2677  T *y = GetPoisonedO<T>(1, oy, 0);
2678  T *z = GetPoisonedO<T>(2, 0, 0);
2679
2680  *z = op(*x, *y);
2681  U4 origin = __msan_get_origin(z);
2682  EXPECT_POISONED_O(*z, origin);
2683  EXPECT_EQ(true, origin == ox || origin == oy);
2684
2685  // y is poisoned, x is not.
2686  *x = 10101;
2687  *y = *GetPoisonedO<T>(1, oy);
2688  break_optimization(x);
2689  __msan_set_origin(z, sizeof(*z), 0);
2690  *z = op(*x, *y);
2691  EXPECT_POISONED_O(*z, oy);
2692  EXPECT_EQ(__msan_get_origin(z), oy);
2693
2694  // x is poisoned, y is not.
2695  *x = *GetPoisonedO<T>(0, ox);
2696  *y = 10101010;
2697  break_optimization(y);
2698  __msan_set_origin(z, sizeof(*z), 0);
2699  *z = op(*x, *y);
2700  EXPECT_POISONED_O(*z, ox);
2701  EXPECT_EQ(__msan_get_origin(z), ox);
2702}
2703
2704template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2705template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2706template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2707template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2708template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2709template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2710
2711TEST(MemorySanitizerOrigins, BinaryOp) {
2712  if (!TrackingOrigins()) return;
2713  BinaryOpOriginTest<S8>(XOR<S8>);
2714  BinaryOpOriginTest<U8>(ADD<U8>);
2715  BinaryOpOriginTest<S4>(SUB<S4>);
2716  BinaryOpOriginTest<S4>(MUL<S4>);
2717  BinaryOpOriginTest<U4>(OR<U4>);
2718  BinaryOpOriginTest<U4>(AND<U4>);
2719  BinaryOpOriginTest<double>(ADD<U4>);
2720  BinaryOpOriginTest<float>(ADD<S4>);
2721  BinaryOpOriginTest<double>(ADD<double>);
2722  BinaryOpOriginTest<float>(ADD<double>);
2723}
2724
2725TEST(MemorySanitizerOrigins, Unary) {
2726  if (!TrackingOrigins()) return;
2727  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2728  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2729  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2730  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2731
2732  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2733  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2734  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2735  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2736
2737  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2738  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2739  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2740  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2741
2742  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2743  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2744  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2745  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2746
2747  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2748  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2749}
2750
2751TEST(MemorySanitizerOrigins, EQ) {
2752  if (!TrackingOrigins()) return;
2753  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2754  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2755  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2756}
2757
2758TEST(MemorySanitizerOrigins, DIV) {
2759  if (!TrackingOrigins()) return;
2760  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2761  unsigned o = __LINE__;
2762  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2763}
2764
2765TEST(MemorySanitizerOrigins, SHIFT) {
2766  if (!TrackingOrigins()) return;
2767  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2768  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2769  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2770  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2771  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2772  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2773}
2774
2775template<class T, int N>
2776void MemCpyTest() {
2777  int ox = __LINE__;
2778  T *x = new T[N];
2779  T *y = new T[N];
2780  T *z = new T[N];
2781  T *q = new T[N];
2782  __msan_poison(x, N * sizeof(T));
2783  __msan_set_origin(x, N * sizeof(T), ox);
2784  __msan_set_origin(y, N * sizeof(T), 777777);
2785  __msan_set_origin(z, N * sizeof(T), 888888);
2786  EXPECT_NOT_POISONED(x);
2787  memcpy(y, x, N * sizeof(T));
2788  EXPECT_POISONED_O(y[0], ox);
2789  EXPECT_POISONED_O(y[N/2], ox);
2790  EXPECT_POISONED_O(y[N-1], ox);
2791  EXPECT_NOT_POISONED(x);
2792  void *res = mempcpy(q, x, N * sizeof(T));
2793  ASSERT_EQ(q + N, res);
2794  EXPECT_POISONED_O(q[0], ox);
2795  EXPECT_POISONED_O(q[N/2], ox);
2796  EXPECT_POISONED_O(q[N-1], ox);
2797  EXPECT_NOT_POISONED(x);
2798  memmove(z, x, N * sizeof(T));
2799  EXPECT_POISONED_O(z[0], ox);
2800  EXPECT_POISONED_O(z[N/2], ox);
2801  EXPECT_POISONED_O(z[N-1], ox);
2802}
2803
2804TEST(MemorySanitizerOrigins, LargeMemCpy) {
2805  if (!TrackingOrigins()) return;
2806  MemCpyTest<U1, 10000>();
2807  MemCpyTest<U8, 10000>();
2808}
2809
2810TEST(MemorySanitizerOrigins, SmallMemCpy) {
2811  if (!TrackingOrigins()) return;
2812  MemCpyTest<U8, 1>();
2813  MemCpyTest<U8, 2>();
2814  MemCpyTest<U8, 3>();
2815}
2816
2817TEST(MemorySanitizerOrigins, Select) {
2818  if (!TrackingOrigins()) return;
2819  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2820  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2821  S4 x;
2822  break_optimization(&x);
2823  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2824
2825  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2826  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2827}
2828
2829extern "C"
2830NOINLINE char AllocaTO() {
2831  int ar[100];
2832  break_optimization(ar);
2833  return ar[10];
2834  // fprintf(stderr, "Descr: %s\n",
2835  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2836}
2837
2838TEST(MemorySanitizerOrigins, Alloca) {
2839  if (!TrackingOrigins()) return;
2840  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2841  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2842  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2843  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2844}
2845
2846// FIXME: replace with a lit-like test.
2847TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2848  if (!TrackingOrigins()) return;
2849  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2850}
2851
2852NOINLINE int RetvalOriginTest(U4 origin) {
2853  int *a = new int;
2854  break_optimization(a);
2855  __msan_set_origin(a, sizeof(*a), origin);
2856  int res = *a;
2857  delete a;
2858  return res;
2859}
2860
2861TEST(MemorySanitizerOrigins, Retval) {
2862  if (!TrackingOrigins()) return;
2863  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2864}
2865
2866NOINLINE void ParamOriginTest(int param, U4 origin) {
2867  EXPECT_POISONED_O(param, origin);
2868}
2869
2870TEST(MemorySanitizerOrigins, Param) {
2871  if (!TrackingOrigins()) return;
2872  int *a = new int;
2873  U4 origin = __LINE__;
2874  break_optimization(a);
2875  __msan_set_origin(a, sizeof(*a), origin);
2876  ParamOriginTest(*a, origin);
2877  delete a;
2878}
2879
2880TEST(MemorySanitizerOrigins, Invoke) {
2881  if (!TrackingOrigins()) return;
2882  StructWithDtor s;  // Will cause the calls to become invokes.
2883  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2884}
2885
2886TEST(MemorySanitizerOrigins, strlen) {
2887  S8 alignment;
2888  break_optimization(&alignment);
2889  char x[4] = {'a', 'b', 0, 0};
2890  __msan_poison(&x[2], 1);
2891  U4 origin = __LINE__;
2892  __msan_set_origin(x, sizeof(x), origin);
2893  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2894}
2895
2896TEST(MemorySanitizerOrigins, wcslen) {
2897  wchar_t w[3] = {'a', 'b', 0};
2898  U4 origin = __LINE__;
2899  __msan_set_origin(w, sizeof(w), origin);
2900  __msan_poison(&w[2], sizeof(wchar_t));
2901  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2902}
2903
2904#if MSAN_HAS_M128
2905TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2906  __m128 x, y;
2907  U4 origin = __LINE__;
2908  __msan_set_origin(&x, sizeof(x), origin);
2909  __msan_poison(&x, sizeof(x));
2910  __builtin_ia32_storeups((float*)&y, x);
2911  EXPECT_POISONED_O(y, origin);
2912}
2913#endif
2914
2915NOINLINE void RecursiveMalloc(int depth) {
2916  static int count;
2917  count++;
2918  if ((count % (1024 * 1024)) == 0)
2919    printf("RecursiveMalloc: %d\n", count);
2920  int *x1 = new int;
2921  int *x2 = new int;
2922  break_optimization(x1);
2923  break_optimization(x2);
2924  if (depth > 0) {
2925    RecursiveMalloc(depth-1);
2926    RecursiveMalloc(depth-1);
2927  }
2928  delete x1;
2929  delete x2;
2930}
2931
2932TEST(MemorySanitizer, CallocOverflow) {
2933  size_t kArraySize = 4096;
2934  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2935  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2936  void *p = 0;
2937  EXPECT_DEATH(p = calloc(kArraySize, kArraySize2),
2938               "llocator is terminating the process instead of returning 0");
2939  EXPECT_EQ(0L, Ident(p));
2940}
2941
2942TEST(MemorySanitizer, Select) {
2943  int x;
2944  int volatile* p = &x;
2945  int z = *p ? 1 : 0;
2946  EXPECT_POISONED(z);
2947}
2948
2949TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2950  RecursiveMalloc(22);
2951}
2952
2953TEST(MemorySanitizerAllocator, get_estimated_allocated_size) {
2954  size_t sizes[] = {0, 20, 5000, 1<<20};
2955  for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) {
2956    size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]);
2957    EXPECT_EQ(alloc_size, sizes[i]);
2958  }
2959}
2960
2961TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) {
2962  char *array = reinterpret_cast<char*>(malloc(100));
2963  int *int_ptr = new int;
2964
2965  EXPECT_TRUE(__msan_get_ownership(array));
2966  EXPECT_EQ(100, __msan_get_allocated_size(array));
2967
2968  EXPECT_TRUE(__msan_get_ownership(int_ptr));
2969  EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr));
2970
2971  void *wild_addr = reinterpret_cast<void*>(0x1);
2972  EXPECT_FALSE(__msan_get_ownership(wild_addr));
2973  EXPECT_EQ(0, __msan_get_allocated_size(wild_addr));
2974
2975  EXPECT_FALSE(__msan_get_ownership(array + 50));
2976  EXPECT_EQ(0, __msan_get_allocated_size(array + 50));
2977
2978  // NULL is a valid argument for GetAllocatedSize but is not owned.
2979  EXPECT_FALSE(__msan_get_ownership(NULL));
2980  EXPECT_EQ(0, __msan_get_allocated_size(NULL));
2981
2982  free(array);
2983  EXPECT_FALSE(__msan_get_ownership(array));
2984  EXPECT_EQ(0, __msan_get_allocated_size(array));
2985
2986  delete int_ptr;
2987}
2988