msan_test.cc revision 97160a83ae2dad479cd93a3cb1dfbc06958f69a1 
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, statfs) {
676  struct statfs* st = new struct statfs;
677  int res = statfs("/", st);
678  assert(!res);
679  EXPECT_NOT_POISONED(st->f_type);
680  EXPECT_NOT_POISONED(st->f_bfree);
681  EXPECT_NOT_POISONED(st->f_namelen);
682}
683
684TEST(MemorySanitizer, pipe) {
685  int* pipefd = new int[2];
686  int res = pipe(pipefd);
687  assert(!res);
688  EXPECT_NOT_POISONED(pipefd[0]);
689  EXPECT_NOT_POISONED(pipefd[1]);
690  close(pipefd[0]);
691  close(pipefd[1]);
692}
693
694TEST(MemorySanitizer, pipe2) {
695  int* pipefd = new int[2];
696  int res = pipe2(pipefd, O_NONBLOCK);
697  assert(!res);
698  EXPECT_NOT_POISONED(pipefd[0]);
699  EXPECT_NOT_POISONED(pipefd[1]);
700  close(pipefd[0]);
701  close(pipefd[1]);
702}
703
704TEST(MemorySanitizer, socketpair) {
705  int sv[2];
706  int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
707  assert(!res);
708  EXPECT_NOT_POISONED(sv[0]);
709  EXPECT_NOT_POISONED(sv[1]);
710  close(sv[0]);
711  close(sv[1]);
712}
713
714TEST(MemorySanitizer, poll) {
715  int* pipefd = new int[2];
716  int res = pipe(pipefd);
717  ASSERT_EQ(0, res);
718
719  char data = 42;
720  res = write(pipefd[1], &data, 1);
721  ASSERT_EQ(1, res);
722
723  pollfd fds[2];
724  fds[0].fd = pipefd[0];
725  fds[0].events = POLLIN;
726  fds[1].fd = pipefd[1];
727  fds[1].events = POLLIN;
728  res = poll(fds, 2, 500);
729  ASSERT_EQ(1, res);
730  EXPECT_NOT_POISONED(fds[0].revents);
731  EXPECT_NOT_POISONED(fds[1].revents);
732
733  close(pipefd[0]);
734  close(pipefd[1]);
735}
736
737TEST(MemorySanitizer, ppoll) {
738  int* pipefd = new int[2];
739  int res = pipe(pipefd);
740  ASSERT_EQ(0, res);
741
742  char data = 42;
743  res = write(pipefd[1], &data, 1);
744  ASSERT_EQ(1, res);
745
746  pollfd fds[2];
747  fds[0].fd = pipefd[0];
748  fds[0].events = POLLIN;
749  fds[1].fd = pipefd[1];
750  fds[1].events = POLLIN;
751  sigset_t ss;
752  sigemptyset(&ss);
753  res = ppoll(fds, 2, NULL, &ss);
754  ASSERT_EQ(1, res);
755  EXPECT_NOT_POISONED(fds[0].revents);
756  EXPECT_NOT_POISONED(fds[1].revents);
757
758  close(pipefd[0]);
759  close(pipefd[1]);
760}
761
762TEST(MemorySanitizer, poll_positive) {
763  int* pipefd = new int[2];
764  int res = pipe(pipefd);
765  ASSERT_EQ(0, res);
766
767  pollfd fds[2];
768  fds[0].fd = pipefd[0];
769  fds[0].events = POLLIN;
770  // fds[1].fd uninitialized
771  fds[1].events = POLLIN;
772  EXPECT_UMR(poll(fds, 2, 0));
773
774  close(pipefd[0]);
775  close(pipefd[1]);
776}
777
778TEST(MemorySanitizer, bind_getsockname) {
779  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
780
781  struct sockaddr_in sai;
782  memset(&sai, 0, sizeof(sai));
783  sai.sin_family = AF_UNIX;
784  int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai));
785
786  assert(!res);
787  char buf[200];
788  socklen_t addrlen;
789  EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen));
790
791  addrlen = sizeof(buf);
792  res = getsockname(sock, (struct sockaddr *)&buf, &addrlen);
793  EXPECT_NOT_POISONED(addrlen);
794  EXPECT_NOT_POISONED(buf[0]);
795  EXPECT_NOT_POISONED(buf[addrlen - 1]);
796  EXPECT_POISONED(buf[addrlen]);
797  close(sock);
798}
799
800TEST(MemorySanitizer, accept) {
801  int listen_socket = socket(AF_INET, SOCK_STREAM, 0);
802  ASSERT_LT(0, listen_socket);
803
804  struct sockaddr_in sai;
805  sai.sin_family = AF_INET;
806  sai.sin_port = 0;
807  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
808  int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai));
809  ASSERT_EQ(0, res);
810
811  res = listen(listen_socket, 1);
812  ASSERT_EQ(0, res);
813
814  socklen_t sz = sizeof(sai);
815  res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz);
816  ASSERT_EQ(0, res);
817  ASSERT_EQ(sizeof(sai), sz);
818
819  int connect_socket = socket(AF_INET, SOCK_STREAM, 0);
820  ASSERT_LT(0, connect_socket);
821  res = fcntl(connect_socket, F_SETFL, O_NONBLOCK);
822  ASSERT_EQ(0, res);
823  res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai));
824  ASSERT_EQ(-1, res);
825  ASSERT_EQ(EINPROGRESS, errno);
826
827  __msan_poison(&sai, sizeof(sai));
828  int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz);
829  ASSERT_LT(0, new_sock);
830  ASSERT_EQ(sizeof(sai), sz);
831  EXPECT_NOT_POISONED(sai);
832
833  __msan_poison(&sai, sizeof(sai));
834  res = getpeername(new_sock, (struct sockaddr *)&sai, &sz);
835  ASSERT_EQ(0, res);
836  ASSERT_EQ(sizeof(sai), sz);
837  EXPECT_NOT_POISONED(sai);
838
839  close(new_sock);
840  close(connect_socket);
841  close(listen_socket);
842}
843
844TEST(MemorySanitizer, getaddrinfo) {
845  struct addrinfo *ai;
846  struct addrinfo hints;
847  memset(&hints, 0, sizeof(hints));
848  hints.ai_family = AF_INET;
849  int res = getaddrinfo("localhost", NULL, &hints, &ai);
850  ASSERT_EQ(0, res);
851  EXPECT_NOT_POISONED(*ai);
852  ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen);
853  EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr);
854}
855
856TEST(MemorySanitizer, getnameinfo) {
857  struct sockaddr_in sai;
858  sai.sin_family = AF_INET;
859  sai.sin_port = 80;
860  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
861  char host[500];
862  char serv[500];
863  int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host,
864                        sizeof(host), serv, sizeof(serv), 0);
865  ASSERT_EQ(0, res);
866  EXPECT_NOT_POISONED(host[0]);
867  EXPECT_POISONED(host[sizeof(host) - 1]);
868
869  ASSERT_NE(0, strlen(host));
870  EXPECT_NOT_POISONED(serv[0]);
871  EXPECT_POISONED(serv[sizeof(serv) - 1]);
872  ASSERT_NE(0, strlen(serv));
873}
874
875#define EXPECT_HOSTENT_NOT_POISONED(he)        \
876  do {                                         \
877    EXPECT_NOT_POISONED(*(he));                \
878    ASSERT_NE((void *) 0, (he)->h_name);       \
879    ASSERT_NE((void *) 0, (he)->h_aliases);    \
880    ASSERT_NE((void *) 0, (he)->h_addr_list);  \
881    EXPECT_NOT_POISONED(strlen((he)->h_name)); \
882    char **p = (he)->h_aliases;                \
883    while (*p) {                               \
884      EXPECT_NOT_POISONED(strlen(*p));         \
885      ++p;                                     \
886    }                                          \
887    char **q = (he)->h_addr_list;              \
888    while (*q) {                               \
889      EXPECT_NOT_POISONED(*q[0]);              \
890      ++q;                                     \
891    }                                          \
892    EXPECT_NOT_POISONED(*q);                   \
893  } while (0)
894
895TEST(MemorySanitizer, gethostent) {
896  struct hostent *he = gethostent();
897  ASSERT_NE((void *)NULL, he);
898  EXPECT_HOSTENT_NOT_POISONED(he);
899}
900
901#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME
902
903TEST(MemorySanitizer, gethostbyname) {
904  struct hostent *he = gethostbyname("localhost");
905  ASSERT_NE((void *)NULL, he);
906  EXPECT_HOSTENT_NOT_POISONED(he);
907}
908
909#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME
910
911TEST(MemorySanitizer, gethostbyname2) {
912  struct hostent *he = gethostbyname2("localhost", AF_INET);
913  ASSERT_NE((void *)NULL, he);
914  EXPECT_HOSTENT_NOT_POISONED(he);
915}
916
917TEST(MemorySanitizer, gethostbyaddr) {
918  in_addr_t addr = inet_addr("127.0.0.1");
919  EXPECT_NOT_POISONED(addr);
920  struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
921  ASSERT_NE((void *)NULL, he);
922  EXPECT_HOSTENT_NOT_POISONED(he);
923}
924
925TEST(MemorySanitizer, gethostent_r) {
926  char buf[2000];
927  struct hostent he;
928  struct hostent *result;
929  int err;
930  int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
931  ASSERT_EQ(0, res);
932  EXPECT_NOT_POISONED(result);
933  ASSERT_NE((void *)NULL, result);
934  EXPECT_HOSTENT_NOT_POISONED(result);
935  EXPECT_NOT_POISONED(err);
936}
937
938TEST(MemorySanitizer, gethostbyname_r) {
939  char buf[2000];
940  struct hostent he;
941  struct hostent *result;
942  int err;
943  int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
944  ASSERT_EQ(0, res);
945  EXPECT_NOT_POISONED(result);
946  ASSERT_NE((void *)NULL, result);
947  EXPECT_HOSTENT_NOT_POISONED(result);
948  EXPECT_NOT_POISONED(err);
949}
950
951TEST(MemorySanitizer, gethostbyname2_r) {
952  char buf[2000];
953  struct hostent he;
954  struct hostent *result;
955  int err;
956  int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
957                             &result, &err);
958  ASSERT_EQ(0, res);
959  EXPECT_NOT_POISONED(result);
960  ASSERT_NE((void *)NULL, result);
961  EXPECT_HOSTENT_NOT_POISONED(result);
962  EXPECT_NOT_POISONED(err);
963}
964
965TEST(MemorySanitizer, gethostbyaddr_r) {
966  char buf[2000];
967  struct hostent he;
968  struct hostent *result;
969  int err;
970  in_addr_t addr = inet_addr("127.0.0.1");
971  EXPECT_NOT_POISONED(addr);
972  int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
973                            &result, &err);
974  ASSERT_EQ(0, res);
975  EXPECT_NOT_POISONED(result);
976  ASSERT_NE((void *)NULL, result);
977  EXPECT_HOSTENT_NOT_POISONED(result);
978  EXPECT_NOT_POISONED(err);
979}
980
981TEST(MemorySanitizer, getsockopt) {
982  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
983  struct linger l[2];
984  socklen_t sz = sizeof(l[0]);
985  int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
986  ASSERT_EQ(0, res);
987  ASSERT_EQ(sizeof(l[0]), sz);
988  EXPECT_NOT_POISONED(l[0]);
989  EXPECT_POISONED(*(char *)(l + 1));
990}
991
992TEST(MemorySanitizer, getcwd) {
993  char path[PATH_MAX + 1];
994  char* res = getcwd(path, sizeof(path));
995  assert(res);
996  EXPECT_NOT_POISONED(path[0]);
997}
998
999TEST(MemorySanitizer, getcwd_gnu) {
1000  char* res = getcwd(NULL, 0);
1001  assert(res);
1002  EXPECT_NOT_POISONED(res[0]);
1003  free(res);
1004}
1005
1006TEST(MemorySanitizer, get_current_dir_name) {
1007  char* res = get_current_dir_name();
1008  assert(res);
1009  EXPECT_NOT_POISONED(res[0]);
1010  free(res);
1011}
1012
1013TEST(MemorySanitizer, confstr) {
1014  char buf[3];
1015  size_t res = confstr(_CS_PATH, buf, sizeof(buf));
1016  ASSERT_GT(res, sizeof(buf));
1017  EXPECT_NOT_POISONED(buf[0]);
1018  EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]);
1019
1020  char buf2[1000];
1021  res = confstr(_CS_PATH, buf2, sizeof(buf2));
1022  ASSERT_LT(res, sizeof(buf2));
1023  EXPECT_NOT_POISONED(buf2[0]);
1024  EXPECT_NOT_POISONED(buf2[res - 1]);
1025  EXPECT_POISONED(buf2[res]);
1026  ASSERT_EQ(res, strlen(buf2) + 1);
1027}
1028
1029TEST(MemorySanitizer, readdir) {
1030  DIR *dir = opendir(".");
1031  struct dirent *d = readdir(dir);
1032  assert(d);
1033  EXPECT_NOT_POISONED(d->d_name[0]);
1034  closedir(dir);
1035}
1036
1037TEST(MemorySanitizer, readdir_r) {
1038  DIR *dir = opendir(".");
1039  struct dirent d;
1040  struct dirent *pd;
1041  int res = readdir_r(dir, &d, &pd);
1042  assert(!res);
1043  EXPECT_NOT_POISONED(pd);
1044  EXPECT_NOT_POISONED(d.d_name[0]);
1045  closedir(dir);
1046}
1047
1048TEST(MemorySanitizer, realpath) {
1049  const char* relpath = ".";
1050  char path[PATH_MAX + 1];
1051  char* res = realpath(relpath, path);
1052  assert(res);
1053  EXPECT_NOT_POISONED(path[0]);
1054}
1055
1056TEST(MemorySanitizer, realpath_null) {
1057  const char* relpath = ".";
1058  char* res = realpath(relpath, NULL);
1059  printf("%d, %s\n", errno, strerror(errno));
1060  assert(res);
1061  EXPECT_NOT_POISONED(res[0]);
1062  free(res);
1063}
1064
1065TEST(MemorySanitizer, canonicalize_file_name) {
1066  const char* relpath = ".";
1067  char* res = canonicalize_file_name(relpath);
1068  assert(res);
1069  EXPECT_NOT_POISONED(res[0]);
1070  free(res);
1071}
1072
1073extern char **environ;
1074
1075TEST(MemorySanitizer, setenv) {
1076  setenv("AAA", "BBB", 1);
1077  for (char **envp = environ; *envp; ++envp) {
1078    EXPECT_NOT_POISONED(*envp);
1079    EXPECT_NOT_POISONED(*envp[0]);
1080  }
1081}
1082
1083TEST(MemorySanitizer, putenv) {
1084  char s[] = "AAA=BBB";
1085  putenv(s);
1086  for (char **envp = environ; *envp; ++envp) {
1087    EXPECT_NOT_POISONED(*envp);
1088    EXPECT_NOT_POISONED(*envp[0]);
1089  }
1090}
1091
1092TEST(MemorySanitizer, memcpy) {
1093  char* x = new char[2];
1094  char* y = new char[2];
1095  x[0] = 1;
1096  x[1] = *GetPoisoned<char>();
1097  memcpy(y, x, 2);
1098  EXPECT_NOT_POISONED(y[0]);
1099  EXPECT_POISONED(y[1]);
1100}
1101
1102TEST(MemorySanitizer, memmove) {
1103  char* x = new char[2];
1104  char* y = new char[2];
1105  x[0] = 1;
1106  x[1] = *GetPoisoned<char>();
1107  memmove(y, x, 2);
1108  EXPECT_NOT_POISONED(y[0]);
1109  EXPECT_POISONED(y[1]);
1110}
1111
1112TEST(MemorySanitizer, bcopy) {
1113  char* x = new char[2];
1114  char* y = new char[2];
1115  x[0] = 1;
1116  x[1] = *GetPoisoned<char>();
1117  bcopy(x, y, 2);
1118  EXPECT_NOT_POISONED(y[0]);
1119  EXPECT_POISONED(y[1]);
1120}
1121
1122TEST(MemorySanitizer, strdup) {
1123  char buf[4] = "abc";
1124  __msan_poison(buf + 2, sizeof(*buf));
1125  char *x = strdup(buf);
1126  EXPECT_NOT_POISONED(x[0]);
1127  EXPECT_NOT_POISONED(x[1]);
1128  EXPECT_POISONED(x[2]);
1129  EXPECT_NOT_POISONED(x[3]);
1130  free(x);
1131}
1132
1133TEST(MemorySanitizer, strndup) {
1134  char buf[4] = "abc";
1135  __msan_poison(buf + 2, sizeof(*buf));
1136  char *x = strndup(buf, 3);
1137  EXPECT_NOT_POISONED(x[0]);
1138  EXPECT_NOT_POISONED(x[1]);
1139  EXPECT_POISONED(x[2]);
1140  EXPECT_NOT_POISONED(x[3]);
1141  free(x);
1142}
1143
1144TEST(MemorySanitizer, strndup_short) {
1145  char buf[4] = "abc";
1146  __msan_poison(buf + 1, sizeof(*buf));
1147  __msan_poison(buf + 2, sizeof(*buf));
1148  char *x = strndup(buf, 2);
1149  EXPECT_NOT_POISONED(x[0]);
1150  EXPECT_POISONED(x[1]);
1151  EXPECT_NOT_POISONED(x[2]);
1152  free(x);
1153}
1154
1155
1156template<class T, int size>
1157void TestOverlapMemmove() {
1158  T *x = new T[size];
1159  assert(size >= 3);
1160  x[2] = 0;
1161  memmove(x, x + 1, (size - 1) * sizeof(T));
1162  EXPECT_NOT_POISONED(x[1]);
1163  if (!__msan_has_dynamic_component()) {
1164    // FIXME: under DR we will lose this information
1165    // because accesses in memmove will unpoisin the shadow.
1166    // We need to use our own memove implementation instead of libc's.
1167    EXPECT_POISONED(x[0]);
1168    EXPECT_POISONED(x[2]);
1169  }
1170  delete [] x;
1171}
1172
1173TEST(MemorySanitizer, overlap_memmove) {
1174  TestOverlapMemmove<U1, 10>();
1175  TestOverlapMemmove<U1, 1000>();
1176  TestOverlapMemmove<U8, 4>();
1177  TestOverlapMemmove<U8, 1000>();
1178}
1179
1180TEST(MemorySanitizer, strcpy) {  // NOLINT
1181  char* x = new char[3];
1182  char* y = new char[3];
1183  x[0] = 'a';
1184  x[1] = *GetPoisoned<char>(1, 1);
1185  x[2] = 0;
1186  strcpy(y, x);  // NOLINT
1187  EXPECT_NOT_POISONED(y[0]);
1188  EXPECT_POISONED(y[1]);
1189  EXPECT_NOT_POISONED(y[2]);
1190}
1191
1192TEST(MemorySanitizer, strncpy) {  // 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  strncpy(y, x, 2);  // NOLINT
1199  EXPECT_NOT_POISONED(y[0]);
1200  EXPECT_POISONED(y[1]);
1201  EXPECT_POISONED(y[2]);
1202}
1203
1204TEST(MemorySanitizer, stpcpy) {  // 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  char *res = stpcpy(y, x);  // NOLINT
1211  ASSERT_EQ(res, y + 2);
1212  EXPECT_NOT_POISONED(y[0]);
1213  EXPECT_POISONED(y[1]);
1214  EXPECT_NOT_POISONED(y[2]);
1215}
1216
1217TEST(MemorySanitizer, strtol) {
1218  char *e;
1219  assert(1 == strtol("1", &e, 10));
1220  EXPECT_NOT_POISONED((S8) e);
1221}
1222
1223TEST(MemorySanitizer, strtoll) {
1224  char *e;
1225  assert(1 == strtoll("1", &e, 10));
1226  EXPECT_NOT_POISONED((S8) e);
1227}
1228
1229TEST(MemorySanitizer, strtoul) {
1230  char *e;
1231  assert(1 == strtoul("1", &e, 10));
1232  EXPECT_NOT_POISONED((S8) e);
1233}
1234
1235TEST(MemorySanitizer, strtoull) {
1236  char *e;
1237  assert(1 == strtoull("1", &e, 10));
1238  EXPECT_NOT_POISONED((S8) e);
1239}
1240
1241TEST(MemorySanitizer, strtoimax) {
1242  char *e;
1243  assert(1 == strtoimax("1", &e, 10));
1244  EXPECT_NOT_POISONED((S8) e);
1245}
1246
1247TEST(MemorySanitizer, strtoumax) {
1248  char *e;
1249  assert(1 == strtoumax("1", &e, 10));
1250  EXPECT_NOT_POISONED((S8) e);
1251}
1252
1253TEST(MemorySanitizer, strtod) {
1254  char *e;
1255  assert(0 != strtod("1.5", &e));
1256  EXPECT_NOT_POISONED((S8) e);
1257}
1258
1259TEST(MemorySanitizer, strtof) {
1260  char *e;
1261  assert(0 != strtof("1.5", &e));
1262  EXPECT_NOT_POISONED((S8) e);
1263}
1264
1265TEST(MemorySanitizer, strtold) {
1266  char *e;
1267  assert(0 != strtold("1.5", &e));
1268  EXPECT_NOT_POISONED((S8) e);
1269}
1270
1271TEST(MemorySanitizer, modf) {
1272  double x, y;
1273  x = modf(2.1, &y);
1274  EXPECT_NOT_POISONED(y);
1275}
1276
1277TEST(MemorySanitizer, modff) {
1278  float x, y;
1279  x = modff(2.1, &y);
1280  EXPECT_NOT_POISONED(y);
1281}
1282
1283TEST(MemorySanitizer, modfl) {
1284  long double x, y;
1285  x = modfl(2.1, &y);
1286  EXPECT_NOT_POISONED(y);
1287}
1288
1289TEST(MemorySanitizer, sprintf) {  // NOLINT
1290  char buff[10];
1291  break_optimization(buff);
1292  EXPECT_POISONED(buff[0]);
1293  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1294  assert(res == 7);
1295  assert(buff[0] == '1');
1296  assert(buff[1] == '2');
1297  assert(buff[2] == '3');
1298  assert(buff[6] == '7');
1299  assert(buff[7] == 0);
1300  EXPECT_POISONED(buff[8]);
1301}
1302
1303TEST(MemorySanitizer, snprintf) {
1304  char buff[10];
1305  break_optimization(buff);
1306  EXPECT_POISONED(buff[0]);
1307  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1308  assert(res == 7);
1309  assert(buff[0] == '1');
1310  assert(buff[1] == '2');
1311  assert(buff[2] == '3');
1312  assert(buff[6] == '7');
1313  assert(buff[7] == 0);
1314  EXPECT_POISONED(buff[8]);
1315}
1316
1317TEST(MemorySanitizer, swprintf) {
1318  wchar_t buff[10];
1319  assert(sizeof(wchar_t) == 4);
1320  break_optimization(buff);
1321  EXPECT_POISONED(buff[0]);
1322  int res = swprintf(buff, 9, L"%d", 1234567);
1323  assert(res == 7);
1324  assert(buff[0] == '1');
1325  assert(buff[1] == '2');
1326  assert(buff[2] == '3');
1327  assert(buff[6] == '7');
1328  assert(buff[7] == 0);
1329  EXPECT_POISONED(buff[8]);
1330}
1331
1332TEST(MemorySanitizer, asprintf) {  // NOLINT
1333  char *pbuf;
1334  EXPECT_POISONED(pbuf);
1335  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1336  assert(res == 7);
1337  EXPECT_NOT_POISONED(pbuf);
1338  assert(pbuf[0] == '1');
1339  assert(pbuf[1] == '2');
1340  assert(pbuf[2] == '3');
1341  assert(pbuf[6] == '7');
1342  assert(pbuf[7] == 0);
1343  free(pbuf);
1344}
1345
1346TEST(MemorySanitizer, mbstowcs) {
1347  const char *x = "abc";
1348  wchar_t buff[10];
1349  int res = mbstowcs(buff, x, 2);
1350  EXPECT_EQ(2, res);
1351  EXPECT_EQ(L'a', buff[0]);
1352  EXPECT_EQ(L'b', buff[1]);
1353  EXPECT_POISONED(buff[2]);
1354  res = mbstowcs(buff, x, 10);
1355  EXPECT_EQ(3, res);
1356  EXPECT_NOT_POISONED(buff[3]);
1357}
1358
1359TEST(MemorySanitizer, wcstombs) {
1360  const wchar_t *x = L"abc";
1361  char buff[10];
1362  int res = wcstombs(buff, x, 4);
1363  EXPECT_EQ(res, 3);
1364  EXPECT_EQ(buff[0], 'a');
1365  EXPECT_EQ(buff[1], 'b');
1366  EXPECT_EQ(buff[2], 'c');
1367}
1368
1369TEST(MemorySanitizer, wcsrtombs) {
1370  const wchar_t *x = L"abc";
1371  const wchar_t *p = x;
1372  char buff[10];
1373  mbstate_t mbs;
1374  memset(&mbs, 0, sizeof(mbs));
1375  int res = wcsrtombs(buff, &p, 4, &mbs);
1376  EXPECT_EQ(res, 3);
1377  EXPECT_EQ(buff[0], 'a');
1378  EXPECT_EQ(buff[1], 'b');
1379  EXPECT_EQ(buff[2], 'c');
1380  EXPECT_EQ(buff[3], '\0');
1381  EXPECT_POISONED(buff[4]);
1382}
1383
1384TEST(MemorySanitizer, wcsnrtombs) {
1385  const wchar_t *x = L"abc";
1386  const wchar_t *p = x;
1387  char buff[10];
1388  mbstate_t mbs;
1389  memset(&mbs, 0, sizeof(mbs));
1390  int res = wcsnrtombs(buff, &p, 2, 4, &mbs);
1391  EXPECT_EQ(res, 2);
1392  EXPECT_EQ(buff[0], 'a');
1393  EXPECT_EQ(buff[1], 'b');
1394  EXPECT_POISONED(buff[2]);
1395}
1396
1397TEST(MemorySanitizer, mbtowc) {
1398  const char *x = "abc";
1399  wchar_t wx;
1400  int res = mbtowc(&wx, x, 3);
1401  EXPECT_GT(res, 0);
1402  EXPECT_NOT_POISONED(wx);
1403}
1404
1405TEST(MemorySanitizer, mbrtowc) {
1406  const char *x = "abc";
1407  wchar_t wx;
1408  mbstate_t mbs;
1409  memset(&mbs, 0, sizeof(mbs));
1410  int res = mbrtowc(&wx, x, 3, &mbs);
1411  EXPECT_GT(res, 0);
1412  EXPECT_NOT_POISONED(wx);
1413}
1414
1415TEST(MemorySanitizer, gettimeofday) {
1416  struct timeval tv;
1417  struct timezone tz;
1418  break_optimization(&tv);
1419  break_optimization(&tz);
1420  assert(sizeof(tv) == 16);
1421  assert(sizeof(tz) == 8);
1422  EXPECT_POISONED(tv.tv_sec);
1423  EXPECT_POISONED(tv.tv_usec);
1424  EXPECT_POISONED(tz.tz_minuteswest);
1425  EXPECT_POISONED(tz.tz_dsttime);
1426  assert(0 == gettimeofday(&tv, &tz));
1427  EXPECT_NOT_POISONED(tv.tv_sec);
1428  EXPECT_NOT_POISONED(tv.tv_usec);
1429  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1430  EXPECT_NOT_POISONED(tz.tz_dsttime);
1431}
1432
1433TEST(MemorySanitizer, clock_gettime) {
1434  struct timespec tp;
1435  EXPECT_POISONED(tp.tv_sec);
1436  EXPECT_POISONED(tp.tv_nsec);
1437  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1438  EXPECT_NOT_POISONED(tp.tv_sec);
1439  EXPECT_NOT_POISONED(tp.tv_nsec);
1440}
1441
1442TEST(MemorySanitizer, clock_getres) {
1443  struct timespec tp;
1444  EXPECT_POISONED(tp.tv_sec);
1445  EXPECT_POISONED(tp.tv_nsec);
1446  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1447  EXPECT_POISONED(tp.tv_sec);
1448  EXPECT_POISONED(tp.tv_nsec);
1449  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1450  EXPECT_NOT_POISONED(tp.tv_sec);
1451  EXPECT_NOT_POISONED(tp.tv_nsec);
1452}
1453
1454TEST(MemorySanitizer, getitimer) {
1455  struct itimerval it1, it2;
1456  int res;
1457  EXPECT_POISONED(it1.it_interval.tv_sec);
1458  EXPECT_POISONED(it1.it_interval.tv_usec);
1459  EXPECT_POISONED(it1.it_value.tv_sec);
1460  EXPECT_POISONED(it1.it_value.tv_usec);
1461  res = getitimer(ITIMER_VIRTUAL, &it1);
1462  assert(!res);
1463  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1464  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1465  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1466  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1467
1468  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1469  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1470
1471  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1472  assert(!res);
1473  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1474  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1475  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1476  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1477
1478  // Check that old_value can be 0, and disable the timer.
1479  memset(&it1, 0, sizeof(it1));
1480  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1481  assert(!res);
1482}
1483
1484TEST(MemorySanitizer, setitimer_null) {
1485  setitimer(ITIMER_VIRTUAL, 0, 0);
1486  // Not testing the return value, since it the behaviour seems to differ
1487  // between libc implementations and POSIX.
1488  // Should never crash, though.
1489}
1490
1491TEST(MemorySanitizer, time) {
1492  time_t t;
1493  EXPECT_POISONED(t);
1494  time_t t2 = time(&t);
1495  assert(t2 != (time_t)-1);
1496  EXPECT_NOT_POISONED(t);
1497}
1498
1499TEST(MemorySanitizer, localtime) {
1500  time_t t = 123;
1501  struct tm *time = localtime(&t);
1502  assert(time != 0);
1503  EXPECT_NOT_POISONED(time->tm_sec);
1504  EXPECT_NOT_POISONED(time->tm_hour);
1505  EXPECT_NOT_POISONED(time->tm_year);
1506  EXPECT_NOT_POISONED(time->tm_isdst);
1507}
1508
1509TEST(MemorySanitizer, localtime_r) {
1510  time_t t = 123;
1511  struct tm time;
1512  struct tm *res = localtime_r(&t, &time);
1513  assert(res != 0);
1514  EXPECT_NOT_POISONED(time.tm_sec);
1515  EXPECT_NOT_POISONED(time.tm_hour);
1516  EXPECT_NOT_POISONED(time.tm_year);
1517  EXPECT_NOT_POISONED(time.tm_isdst);
1518}
1519
1520TEST(MemorySanitizer, mmap) {
1521  const int size = 4096;
1522  void *p1, *p2;
1523  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1524  __msan_poison(p1, size);
1525  munmap(p1, size);
1526  for (int i = 0; i < 1000; i++) {
1527    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1528    if (p2 == p1)
1529      break;
1530    else
1531      munmap(p2, size);
1532  }
1533  if (p1 == p2) {
1534    EXPECT_NOT_POISONED(*(char*)p2);
1535    munmap(p2, size);
1536  }
1537}
1538
1539// FIXME: enable and add ecvt.
1540// FIXME: check why msandr does nt handle fcvt.
1541TEST(MemorySanitizer, fcvt) {
1542  int a, b;
1543  break_optimization(&a);
1544  break_optimization(&b);
1545  EXPECT_POISONED(a);
1546  EXPECT_POISONED(b);
1547  char *str = fcvt(12345.6789, 10, &a, &b);
1548  EXPECT_NOT_POISONED(a);
1549  EXPECT_NOT_POISONED(b);
1550}
1551
1552TEST(MemorySanitizer, frexp) {
1553  int x;
1554  x = *GetPoisoned<int>();
1555  double r = frexp(1.1, &x);
1556  EXPECT_NOT_POISONED(r);
1557  EXPECT_NOT_POISONED(x);
1558
1559  x = *GetPoisoned<int>();
1560  float rf = frexpf(1.1, &x);
1561  EXPECT_NOT_POISONED(rf);
1562  EXPECT_NOT_POISONED(x);
1563
1564  x = *GetPoisoned<int>();
1565  double rl = frexpl(1.1, &x);
1566  EXPECT_NOT_POISONED(rl);
1567  EXPECT_NOT_POISONED(x);
1568}
1569
1570namespace {
1571
1572static int cnt;
1573
1574void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1575  assert(signo == SIGPROF);
1576  assert(si);
1577  EXPECT_NOT_POISONED(si->si_errno);
1578  EXPECT_NOT_POISONED(si->si_pid);
1579#if __linux__
1580# if defined(__x86_64__)
1581  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1582# elif defined(__i386__)
1583  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1584# endif
1585#endif
1586  ++cnt;
1587}
1588
1589TEST(MemorySanitizer, sigaction) {
1590  struct sigaction act = {};
1591  struct sigaction oldact = {};
1592  struct sigaction origact = {};
1593
1594  sigaction(SIGPROF, 0, &origact);
1595
1596  act.sa_flags |= SA_SIGINFO;
1597  act.sa_sigaction = &SigactionHandler;
1598  sigaction(SIGPROF, &act, 0);
1599
1600  kill(getpid(), SIGPROF);
1601
1602  act.sa_flags &= ~SA_SIGINFO;
1603  act.sa_handler = SIG_DFL;
1604  sigaction(SIGPROF, &act, 0);
1605
1606  act.sa_flags &= ~SA_SIGINFO;
1607  act.sa_handler = SIG_IGN;
1608  sigaction(SIGPROF, &act, &oldact);
1609  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1610  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1611  kill(getpid(), SIGPROF);
1612
1613  act.sa_flags |= SA_SIGINFO;
1614  act.sa_sigaction = &SigactionHandler;
1615  sigaction(SIGPROF, &act, &oldact);
1616  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1617  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1618  kill(getpid(), SIGPROF);
1619
1620  act.sa_flags &= ~SA_SIGINFO;
1621  act.sa_handler = SIG_DFL;
1622  sigaction(SIGPROF, &act, &oldact);
1623  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1624  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1625  EXPECT_EQ(2, cnt);
1626
1627  sigaction(SIGPROF, &origact, 0);
1628}
1629
1630} // namespace
1631
1632struct StructWithDtor {
1633  ~StructWithDtor();
1634};
1635
1636NOINLINE StructWithDtor::~StructWithDtor() {
1637  break_optimization(0);
1638}
1639
1640TEST(MemorySanitizer, Invoke) {
1641  StructWithDtor s;  // Will cause the calls to become invokes.
1642  EXPECT_NOT_POISONED(0);
1643  EXPECT_POISONED(*GetPoisoned<int>());
1644  EXPECT_NOT_POISONED(0);
1645  EXPECT_POISONED(*GetPoisoned<int>());
1646  EXPECT_POISONED(ReturnPoisoned<S4>());
1647}
1648
1649TEST(MemorySanitizer, ptrtoint) {
1650  // Test that shadow is propagated through pointer-to-integer conversion.
1651  void* p = (void*)0xABCD;
1652  __msan_poison(((char*)&p) + 1, sizeof(p));
1653  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1654
1655  void* q = (void*)0xABCD;
1656  __msan_poison(&q, sizeof(q) - 1);
1657  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1658}
1659
1660static void vaargsfn2(int guard, ...) {
1661  va_list vl;
1662  va_start(vl, guard);
1663  EXPECT_NOT_POISONED(va_arg(vl, int));
1664  EXPECT_NOT_POISONED(va_arg(vl, int));
1665  EXPECT_NOT_POISONED(va_arg(vl, int));
1666  EXPECT_POISONED(va_arg(vl, double));
1667  va_end(vl);
1668}
1669
1670static void vaargsfn(int guard, ...) {
1671  va_list vl;
1672  va_start(vl, guard);
1673  EXPECT_NOT_POISONED(va_arg(vl, int));
1674  EXPECT_POISONED(va_arg(vl, int));
1675  // The following call will overwrite __msan_param_tls.
1676  // Checks after it test that arg shadow was somehow saved across the call.
1677  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1678  EXPECT_NOT_POISONED(va_arg(vl, int));
1679  EXPECT_POISONED(va_arg(vl, int));
1680  va_end(vl);
1681}
1682
1683TEST(MemorySanitizer, VAArgTest) {
1684  int* x = GetPoisoned<int>();
1685  int* y = GetPoisoned<int>(4);
1686  vaargsfn(1, 13, *x, 42, *y);
1687}
1688
1689static void vaargsfn_many(int guard, ...) {
1690  va_list vl;
1691  va_start(vl, guard);
1692  EXPECT_NOT_POISONED(va_arg(vl, int));
1693  EXPECT_POISONED(va_arg(vl, int));
1694  EXPECT_NOT_POISONED(va_arg(vl, int));
1695  EXPECT_NOT_POISONED(va_arg(vl, int));
1696  EXPECT_NOT_POISONED(va_arg(vl, int));
1697  EXPECT_NOT_POISONED(va_arg(vl, int));
1698  EXPECT_NOT_POISONED(va_arg(vl, int));
1699  EXPECT_NOT_POISONED(va_arg(vl, int));
1700  EXPECT_NOT_POISONED(va_arg(vl, int));
1701  EXPECT_POISONED(va_arg(vl, int));
1702  va_end(vl);
1703}
1704
1705TEST(MemorySanitizer, VAArgManyTest) {
1706  int* x = GetPoisoned<int>();
1707  int* y = GetPoisoned<int>(4);
1708  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1709}
1710
1711static void vaargsfn_pass2(va_list vl) {
1712  EXPECT_NOT_POISONED(va_arg(vl, int));
1713  EXPECT_NOT_POISONED(va_arg(vl, int));
1714  EXPECT_POISONED(va_arg(vl, int));
1715}
1716
1717static void vaargsfn_pass(int guard, ...) {
1718  va_list vl;
1719  va_start(vl, guard);
1720  EXPECT_POISONED(va_arg(vl, int));
1721  vaargsfn_pass2(vl);
1722  va_end(vl);
1723}
1724
1725TEST(MemorySanitizer, VAArgPass) {
1726  int* x = GetPoisoned<int>();
1727  int* y = GetPoisoned<int>(4);
1728  vaargsfn_pass(1, *x, 2, 3, *y);
1729}
1730
1731static void vaargsfn_copy2(va_list vl) {
1732  EXPECT_NOT_POISONED(va_arg(vl, int));
1733  EXPECT_POISONED(va_arg(vl, int));
1734}
1735
1736static void vaargsfn_copy(int guard, ...) {
1737  va_list vl;
1738  va_start(vl, guard);
1739  EXPECT_NOT_POISONED(va_arg(vl, int));
1740  EXPECT_POISONED(va_arg(vl, int));
1741  va_list vl2;
1742  va_copy(vl2, vl);
1743  vaargsfn_copy2(vl2);
1744  EXPECT_NOT_POISONED(va_arg(vl, int));
1745  EXPECT_POISONED(va_arg(vl, int));
1746  va_end(vl);
1747}
1748
1749TEST(MemorySanitizer, VAArgCopy) {
1750  int* x = GetPoisoned<int>();
1751  int* y = GetPoisoned<int>(4);
1752  vaargsfn_copy(1, 2, *x, 3, *y);
1753}
1754
1755static void vaargsfn_ptr(int guard, ...) {
1756  va_list vl;
1757  va_start(vl, guard);
1758  EXPECT_NOT_POISONED(va_arg(vl, int*));
1759  EXPECT_POISONED(va_arg(vl, int*));
1760  EXPECT_NOT_POISONED(va_arg(vl, int*));
1761  EXPECT_POISONED(va_arg(vl, double*));
1762  va_end(vl);
1763}
1764
1765TEST(MemorySanitizer, VAArgPtr) {
1766  int** x = GetPoisoned<int*>();
1767  double** y = GetPoisoned<double*>(8);
1768  int z;
1769  vaargsfn_ptr(1, &z, *x, &z, *y);
1770}
1771
1772static void vaargsfn_overflow(int guard, ...) {
1773  va_list vl;
1774  va_start(vl, guard);
1775  EXPECT_NOT_POISONED(va_arg(vl, int));
1776  EXPECT_NOT_POISONED(va_arg(vl, int));
1777  EXPECT_POISONED(va_arg(vl, int));
1778  EXPECT_NOT_POISONED(va_arg(vl, int));
1779  EXPECT_NOT_POISONED(va_arg(vl, int));
1780  EXPECT_NOT_POISONED(va_arg(vl, int));
1781
1782  EXPECT_NOT_POISONED(va_arg(vl, double));
1783  EXPECT_NOT_POISONED(va_arg(vl, double));
1784  EXPECT_NOT_POISONED(va_arg(vl, double));
1785  EXPECT_POISONED(va_arg(vl, double));
1786  EXPECT_NOT_POISONED(va_arg(vl, double));
1787  EXPECT_POISONED(va_arg(vl, int*));
1788  EXPECT_NOT_POISONED(va_arg(vl, double));
1789  EXPECT_NOT_POISONED(va_arg(vl, double));
1790
1791  EXPECT_POISONED(va_arg(vl, int));
1792  EXPECT_POISONED(va_arg(vl, double));
1793  EXPECT_POISONED(va_arg(vl, int*));
1794
1795  EXPECT_NOT_POISONED(va_arg(vl, int));
1796  EXPECT_NOT_POISONED(va_arg(vl, double));
1797  EXPECT_NOT_POISONED(va_arg(vl, int*));
1798
1799  EXPECT_POISONED(va_arg(vl, int));
1800  EXPECT_POISONED(va_arg(vl, double));
1801  EXPECT_POISONED(va_arg(vl, int*));
1802
1803  va_end(vl);
1804}
1805
1806TEST(MemorySanitizer, VAArgOverflow) {
1807  int* x = GetPoisoned<int>();
1808  double* y = GetPoisoned<double>(8);
1809  int** p = GetPoisoned<int*>(16);
1810  int z;
1811  vaargsfn_overflow(1,
1812      1, 2, *x, 4, 5, 6,
1813      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1814      // the following args will overflow for sure
1815      *x, *y, *p,
1816      7, 9.9, &z,
1817      *x, *y, *p);
1818}
1819
1820static void vaargsfn_tlsoverwrite2(int guard, ...) {
1821  va_list vl;
1822  va_start(vl, guard);
1823  for (int i = 0; i < 20; ++i)
1824    EXPECT_NOT_POISONED(va_arg(vl, int));
1825  va_end(vl);
1826}
1827
1828static void vaargsfn_tlsoverwrite(int guard, ...) {
1829  // This call will overwrite TLS contents unless it's backed up somewhere.
1830  vaargsfn_tlsoverwrite2(2,
1831      42, 42, 42, 42, 42,
1832      42, 42, 42, 42, 42,
1833      42, 42, 42, 42, 42,
1834      42, 42, 42, 42, 42); // 20x
1835  va_list vl;
1836  va_start(vl, guard);
1837  for (int i = 0; i < 20; ++i)
1838    EXPECT_POISONED(va_arg(vl, int));
1839  va_end(vl);
1840}
1841
1842TEST(MemorySanitizer, VAArgTLSOverwrite) {
1843  int* x = GetPoisoned<int>();
1844  vaargsfn_tlsoverwrite(1,
1845      *x, *x, *x, *x, *x,
1846      *x, *x, *x, *x, *x,
1847      *x, *x, *x, *x, *x,
1848      *x, *x, *x, *x, *x); // 20x
1849
1850}
1851
1852struct StructByVal {
1853  int a, b, c, d, e, f;
1854};
1855
1856NOINLINE void StructByValTestFunc(struct StructByVal s) {
1857  EXPECT_NOT_POISONED(s.a);
1858  EXPECT_POISONED(s.b);
1859  EXPECT_NOT_POISONED(s.c);
1860  EXPECT_POISONED(s.d);
1861  EXPECT_NOT_POISONED(s.e);
1862  EXPECT_POISONED(s.f);
1863}
1864
1865NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1866  StructByValTestFunc(s);
1867}
1868
1869NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1870  StructByValTestFunc(s);
1871}
1872
1873TEST(MemorySanitizer, StructByVal) {
1874  // Large aggregates are passed as "byval" pointer argument in LLVM.
1875  struct StructByVal s;
1876  s.a = 1;
1877  s.b = *GetPoisoned<int>();
1878  s.c = 2;
1879  s.d = *GetPoisoned<int>();
1880  s.e = 3;
1881  s.f = *GetPoisoned<int>();
1882  StructByValTestFunc(s);
1883  StructByValTestFunc1(s);
1884  StructByValTestFunc2(0, s);
1885}
1886
1887
1888#if MSAN_HAS_M128
1889NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1890NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1891TEST(MemorySanitizer, m128) {
1892  __m128i a = _mm_set1_epi16(0x1234);
1893  __m128i b = _mm_set1_epi16(0x7890);
1894  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1895  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1896}
1897// FIXME: add more tests for __m128i.
1898#endif  // MSAN_HAS_M128
1899
1900// We should not complain when copying this poisoned hole.
1901struct StructWithHole {
1902  U4  a;
1903  // 4-byte hole.
1904  U8  b;
1905};
1906
1907NOINLINE StructWithHole ReturnStructWithHole() {
1908  StructWithHole res;
1909  __msan_poison(&res, sizeof(res));
1910  res.a = 1;
1911  res.b = 2;
1912  return res;
1913}
1914
1915TEST(MemorySanitizer, StructWithHole) {
1916  StructWithHole a = ReturnStructWithHole();
1917  break_optimization(&a);
1918}
1919
1920template <class T>
1921NOINLINE T ReturnStruct() {
1922  T res;
1923  __msan_poison(&res, sizeof(res));
1924  res.a = 1;
1925  return res;
1926}
1927
1928template <class T>
1929NOINLINE void TestReturnStruct() {
1930  T s1 = ReturnStruct<T>();
1931  EXPECT_NOT_POISONED(s1.a);
1932  EXPECT_POISONED(s1.b);
1933}
1934
1935struct SSS1 {
1936  int a, b, c;
1937};
1938struct SSS2 {
1939  int b, a, c;
1940};
1941struct SSS3 {
1942  int b, c, a;
1943};
1944struct SSS4 {
1945  int c, b, a;
1946};
1947
1948struct SSS5 {
1949  int a;
1950  float b;
1951};
1952struct SSS6 {
1953  int a;
1954  double b;
1955};
1956struct SSS7 {
1957  S8 b;
1958  int a;
1959};
1960struct SSS8 {
1961  S2 b;
1962  S8 a;
1963};
1964
1965TEST(MemorySanitizer, IntStruct3) {
1966  TestReturnStruct<SSS1>();
1967  TestReturnStruct<SSS2>();
1968  TestReturnStruct<SSS3>();
1969  TestReturnStruct<SSS4>();
1970  TestReturnStruct<SSS5>();
1971  TestReturnStruct<SSS6>();
1972  TestReturnStruct<SSS7>();
1973  TestReturnStruct<SSS8>();
1974}
1975
1976struct LongStruct {
1977  U1 a1, b1;
1978  U2 a2, b2;
1979  U4 a4, b4;
1980  U8 a8, b8;
1981};
1982
1983NOINLINE LongStruct ReturnLongStruct1() {
1984  LongStruct res;
1985  __msan_poison(&res, sizeof(res));
1986  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1987  // leaves b1, .., b8 poisoned.
1988  return res;
1989}
1990
1991NOINLINE LongStruct ReturnLongStruct2() {
1992  LongStruct res;
1993  __msan_poison(&res, sizeof(res));
1994  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1995  // leaves a1, .., a8 poisoned.
1996  return res;
1997}
1998
1999TEST(MemorySanitizer, LongStruct) {
2000  LongStruct s1 = ReturnLongStruct1();
2001  __msan_print_shadow(&s1, sizeof(s1));
2002  EXPECT_NOT_POISONED(s1.a1);
2003  EXPECT_NOT_POISONED(s1.a2);
2004  EXPECT_NOT_POISONED(s1.a4);
2005  EXPECT_NOT_POISONED(s1.a8);
2006
2007  EXPECT_POISONED(s1.b1);
2008  EXPECT_POISONED(s1.b2);
2009  EXPECT_POISONED(s1.b4);
2010  EXPECT_POISONED(s1.b8);
2011
2012  LongStruct s2 = ReturnLongStruct2();
2013  __msan_print_shadow(&s2, sizeof(s2));
2014  EXPECT_NOT_POISONED(s2.b1);
2015  EXPECT_NOT_POISONED(s2.b2);
2016  EXPECT_NOT_POISONED(s2.b4);
2017  EXPECT_NOT_POISONED(s2.b8);
2018
2019  EXPECT_POISONED(s2.a1);
2020  EXPECT_POISONED(s2.a2);
2021  EXPECT_POISONED(s2.a4);
2022  EXPECT_POISONED(s2.a8);
2023}
2024
2025TEST(MemorySanitizer, getrlimit) {
2026  struct rlimit limit;
2027  __msan_poison(&limit, sizeof(limit));
2028  int result = getrlimit(RLIMIT_DATA, &limit);
2029  assert(result == 0);
2030  EXPECT_NOT_POISONED(limit.rlim_cur);
2031  EXPECT_NOT_POISONED(limit.rlim_max);
2032}
2033
2034TEST(MemorySanitizer, getrusage) {
2035  struct rusage usage;
2036  __msan_poison(&usage, sizeof(usage));
2037  int result = getrusage(RUSAGE_SELF, &usage);
2038  assert(result == 0);
2039  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
2040  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
2041  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
2042  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
2043  EXPECT_NOT_POISONED(usage.ru_maxrss);
2044  EXPECT_NOT_POISONED(usage.ru_minflt);
2045  EXPECT_NOT_POISONED(usage.ru_majflt);
2046  EXPECT_NOT_POISONED(usage.ru_inblock);
2047  EXPECT_NOT_POISONED(usage.ru_oublock);
2048  EXPECT_NOT_POISONED(usage.ru_nvcsw);
2049  EXPECT_NOT_POISONED(usage.ru_nivcsw);
2050}
2051
2052#ifdef __GLIBC__
2053extern char *program_invocation_name;
2054#else  // __GLIBC__
2055# error "TODO: port this"
2056#endif
2057
2058static void dladdr_testfn() {}
2059
2060TEST(MemorySanitizer, dladdr) {
2061  Dl_info info;
2062  __msan_poison(&info, sizeof(info));
2063  int result = dladdr((const void*)dladdr_testfn, &info);
2064  assert(result != 0);
2065  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
2066  if (info.dli_fname)
2067    EXPECT_NOT_POISONED(strlen(info.dli_fname));
2068  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
2069  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
2070  if (info.dli_sname)
2071    EXPECT_NOT_POISONED(strlen(info.dli_sname));
2072  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
2073}
2074
2075#ifndef MSAN_TEST_DISABLE_DLOPEN
2076
2077static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
2078  (*(int *)data)++;
2079  EXPECT_NOT_POISONED(info->dlpi_addr);
2080  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
2081  EXPECT_NOT_POISONED(info->dlpi_phnum);
2082  for (int i = 0; i < info->dlpi_phnum; ++i)
2083    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
2084  return 0;
2085}
2086
2087// Compute the path to our loadable DSO.  We assume it's in the same
2088// directory.  Only use string routines that we intercept so far to do this.
2089static int PathToLoadable(char *buf, size_t sz) {
2090  const char *basename = "libmsan_loadable.x86_64.so";
2091  char *argv0 = program_invocation_name;
2092  char *last_slash = strrchr(argv0, '/');
2093  assert(last_slash);
2094  int res =
2095      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
2096  return res < sz ? 0 : res;
2097}
2098
2099TEST(MemorySanitizer, dl_iterate_phdr) {
2100  char path[4096];
2101  int res = PathToLoadable(path, sizeof(path));
2102  assert(!res);
2103
2104  // Having at least one dlopen'ed library in the process makes this more
2105  // entertaining.
2106  void *lib = dlopen(path, RTLD_LAZY);
2107  ASSERT_NE((void*)0, lib);
2108
2109  int count = 0;
2110  int result = dl_iterate_phdr(dl_phdr_callback, &count);
2111  assert(count > 0);
2112
2113  dlclose(lib);
2114}
2115
2116
2117TEST(MemorySanitizer, dlopen) {
2118  char path[4096];
2119  int res = PathToLoadable(path, sizeof(path));
2120  assert(!res);
2121
2122  // We need to clear shadow for globals when doing dlopen.  In order to test
2123  // this, we have to poison the shadow for the DSO before we load it.  In
2124  // general this is difficult, but the loader tends to reload things in the
2125  // same place, so we open, close, and then reopen.  The global should always
2126  // start out clean after dlopen.
2127  for (int i = 0; i < 2; i++) {
2128    void *lib = dlopen(path, RTLD_LAZY);
2129    if (lib == NULL) {
2130      printf("dlerror: %s\n", dlerror());
2131      assert(lib != NULL);
2132    }
2133    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
2134    assert(get_dso_global);
2135    void **dso_global = get_dso_global();
2136    EXPECT_NOT_POISONED(*dso_global);
2137    __msan_poison(dso_global, sizeof(*dso_global));
2138    EXPECT_POISONED(*dso_global);
2139    dlclose(lib);
2140  }
2141}
2142
2143// Regression test for a crash in dlopen() interceptor.
2144TEST(MemorySanitizer, dlopenFailed) {
2145  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
2146  void *lib = dlopen(path, RTLD_LAZY);
2147  ASSERT_EQ(0, lib);
2148}
2149
2150#endif // MSAN_TEST_DISABLE_DLOPEN
2151
2152TEST(MemorySanitizer, sched_getaffinity) {
2153  cpu_set_t mask;
2154  int res = sched_getaffinity(getpid(), sizeof(mask), &mask);
2155  ASSERT_EQ(0, res);
2156  EXPECT_NOT_POISONED(mask);
2157}
2158
2159TEST(MemorySanitizer, scanf) {
2160  const char *input = "42 hello";
2161  int* d = new int;
2162  char* s = new char[7];
2163  int res = sscanf(input, "%d %5s", d, s);
2164  printf("res %d\n", res);
2165  assert(res == 2);
2166  EXPECT_NOT_POISONED(*d);
2167  EXPECT_NOT_POISONED(s[0]);
2168  EXPECT_NOT_POISONED(s[1]);
2169  EXPECT_NOT_POISONED(s[2]);
2170  EXPECT_NOT_POISONED(s[3]);
2171  EXPECT_NOT_POISONED(s[4]);
2172  EXPECT_NOT_POISONED(s[5]);
2173  EXPECT_POISONED(s[6]);
2174  delete s;
2175  delete d;
2176}
2177
2178static void *SimpleThread_threadfn(void* data) {
2179  return new int;
2180}
2181
2182TEST(MemorySanitizer, SimpleThread) {
2183  pthread_t t;
2184  void *p;
2185  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
2186  assert(!res);
2187  EXPECT_NOT_POISONED(t);
2188  res = pthread_join(t, &p);
2189  assert(!res);
2190  EXPECT_NOT_POISONED(p);
2191  delete (int*)p;
2192}
2193
2194static void *SmallStackThread_threadfn(void* data) {
2195  return 0;
2196}
2197
2198TEST(MemorySanitizer, SmallStackThread) {
2199  pthread_attr_t attr;
2200  pthread_t t;
2201  void *p;
2202  int res;
2203  res = pthread_attr_init(&attr);
2204  ASSERT_EQ(0, res);
2205  res = pthread_attr_setstacksize(&attr, 64 * 1024);
2206  ASSERT_EQ(0, res);
2207  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2208  ASSERT_EQ(0, res);
2209  res = pthread_join(t, &p);
2210  ASSERT_EQ(0, res);
2211  res = pthread_attr_destroy(&attr);
2212  ASSERT_EQ(0, res);
2213}
2214
2215TEST(MemorySanitizer, PreAllocatedStackThread) {
2216  pthread_attr_t attr;
2217  pthread_t t;
2218  int res;
2219  res = pthread_attr_init(&attr);
2220  ASSERT_EQ(0, res);
2221  void *stack;
2222  const size_t kStackSize = 64 * 1024;
2223  res = posix_memalign(&stack, 4096, kStackSize);
2224  ASSERT_EQ(0, res);
2225  res = pthread_attr_setstack(&attr, stack, kStackSize);
2226  ASSERT_EQ(0, res);
2227  // A small self-allocated stack can not be extended by the tool.
2228  // In this case pthread_create is expected to fail.
2229  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2230  EXPECT_NE(0, res);
2231  res = pthread_attr_destroy(&attr);
2232  ASSERT_EQ(0, res);
2233}
2234
2235TEST(MemorySanitizer, pthread_getschedparam) {
2236  int policy;
2237  struct sched_param param;
2238  int res = pthread_getschedparam(pthread_self(), &policy, &param);
2239  ASSERT_EQ(0, res);
2240  EXPECT_NOT_POISONED(policy);
2241  EXPECT_NOT_POISONED(param.sched_priority);
2242}
2243
2244TEST(MemorySanitizer, pthread_key_create) {
2245  pthread_key_t key;
2246  int res = pthread_key_create(&key, NULL);
2247  assert(!res);
2248  EXPECT_NOT_POISONED(key);
2249  res = pthread_key_delete(key);
2250  assert(!res);
2251}
2252
2253TEST(MemorySanitizer, posix_memalign) {
2254  void *p;
2255  EXPECT_POISONED(p);
2256  int res = posix_memalign(&p, 4096, 13);
2257  ASSERT_EQ(0, res);
2258  EXPECT_NOT_POISONED(p);
2259  EXPECT_EQ(0U, (uintptr_t)p % 4096);
2260  free(p);
2261}
2262
2263TEST(MemorySanitizer, memalign) {
2264  void *p = memalign(4096, 13);
2265  EXPECT_EQ(0U, (uintptr_t)p % kPageSize);
2266  free(p);
2267}
2268
2269TEST(MemorySanitizer, valloc) {
2270  void *a = valloc(100);
2271  EXPECT_EQ(0U, (uintptr_t)a % kPageSize);
2272  free(a);
2273}
2274
2275TEST(MemorySanitizer, pvalloc) {
2276  void *p = pvalloc(kPageSize + 100);
2277  EXPECT_EQ(0U, (uintptr_t)p % kPageSize);
2278  EXPECT_EQ(2 * kPageSize, __msan_get_allocated_size(p));
2279  free(p);
2280
2281  p = pvalloc(0);  // pvalloc(0) should allocate at least one page.
2282  EXPECT_EQ(0U, (uintptr_t)p % kPageSize);
2283  EXPECT_EQ(kPageSize, __msan_get_allocated_size(p));
2284  free(p);
2285}
2286
2287TEST(MemorySanitizer, inet_pton) {
2288  const char *s = "1:0:0:0:0:0:0:8";
2289  unsigned char buf[sizeof(struct in6_addr)];
2290  int res = inet_pton(AF_INET6, s, buf);
2291  ASSERT_EQ(1, res);
2292  EXPECT_NOT_POISONED(buf[0]);
2293  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
2294
2295  char s_out[INET6_ADDRSTRLEN];
2296  EXPECT_POISONED(s_out[3]);
2297  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
2298  ASSERT_NE((void*)0, q);
2299  EXPECT_NOT_POISONED(s_out[3]);
2300}
2301
2302TEST(MemorySanitizer, inet_aton) {
2303  const char *s = "127.0.0.1";
2304  struct in_addr in[2];
2305  int res = inet_aton(s, in);
2306  ASSERT_NE(0, res);
2307  EXPECT_NOT_POISONED(in[0]);
2308  EXPECT_POISONED(*(char *)(in + 1));
2309}
2310
2311TEST(MemorySanitizer, uname) {
2312  struct utsname u;
2313  int res = uname(&u);
2314  assert(!res);
2315  EXPECT_NOT_POISONED(strlen(u.sysname));
2316  EXPECT_NOT_POISONED(strlen(u.nodename));
2317  EXPECT_NOT_POISONED(strlen(u.release));
2318  EXPECT_NOT_POISONED(strlen(u.version));
2319  EXPECT_NOT_POISONED(strlen(u.machine));
2320}
2321
2322TEST(MemorySanitizer, gethostname) {
2323  char buf[100];
2324  int res = gethostname(buf, 100);
2325  assert(!res);
2326  EXPECT_NOT_POISONED(strlen(buf));
2327}
2328
2329TEST(MemorySanitizer, sysinfo) {
2330  struct sysinfo info;
2331  int res = sysinfo(&info);
2332  assert(!res);
2333  EXPECT_NOT_POISONED(info);
2334}
2335
2336TEST(MemorySanitizer, getpwuid) {
2337  struct passwd *p = getpwuid(0); // root
2338  assert(p);
2339  EXPECT_NOT_POISONED(p->pw_name);
2340  assert(p->pw_name);
2341  EXPECT_NOT_POISONED(p->pw_name[0]);
2342  EXPECT_NOT_POISONED(p->pw_uid);
2343  assert(p->pw_uid == 0);
2344}
2345
2346TEST(MemorySanitizer, getpwnam_r) {
2347  struct passwd pwd;
2348  struct passwd *pwdres;
2349  char buf[10000];
2350  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
2351  assert(!res);
2352  EXPECT_NOT_POISONED(pwd.pw_name);
2353  assert(pwd.pw_name);
2354  EXPECT_NOT_POISONED(pwd.pw_name[0]);
2355  EXPECT_NOT_POISONED(pwd.pw_uid);
2356  assert(pwd.pw_uid == 0);
2357}
2358
2359TEST(MemorySanitizer, getpwnam_r_positive) {
2360  struct passwd pwd;
2361  struct passwd *pwdres;
2362  char s[5];
2363  strncpy(s, "abcd", 5);
2364  __msan_poison(s, 5);
2365  char buf[10000];
2366  int res;
2367  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2368}
2369
2370TEST(MemorySanitizer, getgrnam_r) {
2371  struct group grp;
2372  struct group *grpres;
2373  char buf[10000];
2374  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2375  assert(!res);
2376  EXPECT_NOT_POISONED(grp.gr_name);
2377  assert(grp.gr_name);
2378  EXPECT_NOT_POISONED(grp.gr_name[0]);
2379  EXPECT_NOT_POISONED(grp.gr_gid);
2380}
2381
2382TEST(MemorySanitizer, getgroups) {
2383  int n = getgroups(0, 0);
2384  gid_t *gids = new gid_t[n];
2385  int res = getgroups(n, gids);
2386  ASSERT_EQ(n, res);
2387  for (int i = 0; i < n; ++i)
2388    EXPECT_NOT_POISONED(gids[i]);
2389}
2390
2391template<class T>
2392static bool applySlt(T value, T shadow) {
2393  __msan_partial_poison(&value, &shadow, sizeof(T));
2394  volatile bool zzz = true;
2395  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2396  // a shift-and-trunc to get at the highest bit.
2397  volatile bool v = value < 0 || zzz;
2398  return v;
2399}
2400
2401TEST(MemorySanitizer, SignedCompareWithZero) {
2402  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2403  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2404  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2405  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2406  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2407  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2408}
2409
2410template <class T, class S>
2411static T poisoned(T Va, S Sa) {
2412  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2413  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2414  T a;
2415  a = Va;
2416  __msan_partial_poison(&a, &Sa, sizeof(T));
2417  return a;
2418}
2419
2420TEST(MemorySanitizer, ICmpRelational) {
2421  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2422  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2423  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2424  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2425  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2426  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2427                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2428  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2429                  poisoned(-1, 0xFFFFFFFFU));
2430
2431  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2432  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2433  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2434  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2435  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2436  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2437                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2438  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2439                  poisoned(-1, 0xFFFFFFFFU));
2440
2441  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2442  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2443  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2444  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2445  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2446  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2447                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2448  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2449                  poisoned(-1, 0xFFFFFFFFU));
2450
2451  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2452  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2453  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2454  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2455  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2456  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2457                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2458  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2459                  poisoned(-1, 0xFFFFFFFFU));
2460
2461  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2462  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2463
2464  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2465}
2466
2467#if MSAN_HAS_M128
2468TEST(MemorySanitizer, ICmpVectorRelational) {
2469  EXPECT_NOT_POISONED(
2470      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2471                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2472  EXPECT_NOT_POISONED(
2473      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2474                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2475  EXPECT_POISONED(
2476      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2477                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2478  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2479                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2480}
2481#endif
2482
2483// Volatile bitfield store is implemented as load-mask-store
2484// Test that we don't warn on the store of (uninitialized) padding.
2485struct VolatileBitfieldStruct {
2486  volatile unsigned x : 1;
2487  unsigned y : 1;
2488};
2489
2490TEST(MemorySanitizer, VolatileBitfield) {
2491  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2492  S->x = 1;
2493  EXPECT_NOT_POISONED((unsigned)S->x);
2494  EXPECT_POISONED((unsigned)S->y);
2495}
2496
2497TEST(MemorySanitizer, UnalignedLoad) {
2498  char x[32];
2499  memset(x + 8, 0, 16);
2500  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2501  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2502  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2503  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2504  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2505  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2506  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2507
2508  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2509  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2510  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2511  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2512  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2513  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2514  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2515
2516  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2517  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2518  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2519  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2520  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2521  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2522  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2523  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2524  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2525}
2526
2527TEST(MemorySanitizer, UnalignedStore16) {
2528  char x[5];
2529  U2 y = 0;
2530  __msan_poison(&y, 1);
2531  __sanitizer_unaligned_store16(x + 1, y);
2532  EXPECT_POISONED(x[0]);
2533  EXPECT_POISONED(x[1]);
2534  EXPECT_NOT_POISONED(x[2]);
2535  EXPECT_POISONED(x[3]);
2536  EXPECT_POISONED(x[4]);
2537}
2538
2539TEST(MemorySanitizer, UnalignedStore32) {
2540  char x[8];
2541  U4 y4 = 0;
2542  __msan_poison(&y4, 2);
2543  __sanitizer_unaligned_store32(x+3, y4);
2544  EXPECT_POISONED(x[0]);
2545  EXPECT_POISONED(x[1]);
2546  EXPECT_POISONED(x[2]);
2547  EXPECT_POISONED(x[3]);
2548  EXPECT_POISONED(x[4]);
2549  EXPECT_NOT_POISONED(x[5]);
2550  EXPECT_NOT_POISONED(x[6]);
2551  EXPECT_POISONED(x[7]);
2552}
2553
2554TEST(MemorySanitizer, UnalignedStore64) {
2555  char x[16];
2556  U8 y = 0;
2557  __msan_poison(&y, 3);
2558  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2559  __sanitizer_unaligned_store64(x+3, y);
2560  EXPECT_POISONED(x[0]);
2561  EXPECT_POISONED(x[1]);
2562  EXPECT_POISONED(x[2]);
2563  EXPECT_POISONED(x[3]);
2564  EXPECT_POISONED(x[4]);
2565  EXPECT_POISONED(x[5]);
2566  EXPECT_NOT_POISONED(x[6]);
2567  EXPECT_NOT_POISONED(x[7]);
2568  EXPECT_NOT_POISONED(x[8]);
2569  EXPECT_POISONED(x[9]);
2570  EXPECT_NOT_POISONED(x[10]);
2571  EXPECT_POISONED(x[11]);
2572}
2573
2574TEST(MemorySanitizerDr, StoreInDSOTest) {
2575  if (!__msan_has_dynamic_component()) return;
2576  char* s = new char[10];
2577  dso_memfill(s, 9);
2578  EXPECT_NOT_POISONED(s[5]);
2579  EXPECT_POISONED(s[9]);
2580}
2581
2582int return_poisoned_int() {
2583  return ReturnPoisoned<U8>();
2584}
2585
2586TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2587  if (!__msan_has_dynamic_component()) return;
2588  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2589}
2590
2591NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2592  EXPECT_POISONED(x);
2593  EXPECT_POISONED(y);
2594  EXPECT_POISONED(z);
2595  return 0;
2596}
2597
2598static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2599  EXPECT_NOT_POISONED(x);
2600  EXPECT_NOT_POISONED(y);
2601  EXPECT_NOT_POISONED(z);
2602  return 0;
2603}
2604
2605TEST(MemorySanitizerDr, CallFromDSOTest) {
2606  if (!__msan_has_dynamic_component()) return;
2607  S8* x = GetPoisoned<S8>();
2608  S8* y = GetPoisoned<S8>();
2609  S8* z = GetPoisoned<S8>();
2610  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2611  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2612}
2613
2614static void StackStoreInDSOFn(int* x, int* y) {
2615  EXPECT_NOT_POISONED(*x);
2616  EXPECT_NOT_POISONED(*y);
2617}
2618
2619TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2620  if (!__msan_has_dynamic_component()) return;
2621  dso_stack_store(StackStoreInDSOFn, 1);
2622}
2623
2624TEST(MemorySanitizerOrigins, SetGet) {
2625  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2626  if (!TrackingOrigins()) return;
2627  int x;
2628  __msan_set_origin(&x, sizeof(x), 1234);
2629  EXPECT_EQ(1234, __msan_get_origin(&x));
2630  __msan_set_origin(&x, sizeof(x), 5678);
2631  EXPECT_EQ(5678, __msan_get_origin(&x));
2632  __msan_set_origin(&x, sizeof(x), 0);
2633  EXPECT_EQ(0, __msan_get_origin(&x));
2634}
2635
2636namespace {
2637struct S {
2638  U4 dummy;
2639  U2 a;
2640  U2 b;
2641};
2642
2643// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2644TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2645  if (!TrackingOrigins()) return;
2646
2647  S s;
2648  U4 origin = rand();  // NOLINT
2649  s.a = *GetPoisonedO<U2>(0, origin);
2650  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2651  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2652
2653  s.b = 42;
2654  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2655  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2656}
2657}  // namespace
2658
2659template<class T, class BinaryOp>
2660INLINE
2661void BinaryOpOriginTest(BinaryOp op) {
2662  U4 ox = rand();  //NOLINT
2663  U4 oy = rand();  //NOLINT
2664  T *x = GetPoisonedO<T>(0, ox, 0);
2665  T *y = GetPoisonedO<T>(1, oy, 0);
2666  T *z = GetPoisonedO<T>(2, 0, 0);
2667
2668  *z = op(*x, *y);
2669  U4 origin = __msan_get_origin(z);
2670  EXPECT_POISONED_O(*z, origin);
2671  EXPECT_EQ(true, origin == ox || origin == oy);
2672
2673  // y is poisoned, x is not.
2674  *x = 10101;
2675  *y = *GetPoisonedO<T>(1, oy);
2676  break_optimization(x);
2677  __msan_set_origin(z, sizeof(*z), 0);
2678  *z = op(*x, *y);
2679  EXPECT_POISONED_O(*z, oy);
2680  EXPECT_EQ(__msan_get_origin(z), oy);
2681
2682  // x is poisoned, y is not.
2683  *x = *GetPoisonedO<T>(0, ox);
2684  *y = 10101010;
2685  break_optimization(y);
2686  __msan_set_origin(z, sizeof(*z), 0);
2687  *z = op(*x, *y);
2688  EXPECT_POISONED_O(*z, ox);
2689  EXPECT_EQ(__msan_get_origin(z), ox);
2690}
2691
2692template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2693template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2694template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2695template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2696template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2697template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2698
2699TEST(MemorySanitizerOrigins, BinaryOp) {
2700  if (!TrackingOrigins()) return;
2701  BinaryOpOriginTest<S8>(XOR<S8>);
2702  BinaryOpOriginTest<U8>(ADD<U8>);
2703  BinaryOpOriginTest<S4>(SUB<S4>);
2704  BinaryOpOriginTest<S4>(MUL<S4>);
2705  BinaryOpOriginTest<U4>(OR<U4>);
2706  BinaryOpOriginTest<U4>(AND<U4>);
2707  BinaryOpOriginTest<double>(ADD<U4>);
2708  BinaryOpOriginTest<float>(ADD<S4>);
2709  BinaryOpOriginTest<double>(ADD<double>);
2710  BinaryOpOriginTest<float>(ADD<double>);
2711}
2712
2713TEST(MemorySanitizerOrigins, Unary) {
2714  if (!TrackingOrigins()) return;
2715  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2716  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2717  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2718  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2719
2720  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2721  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2722  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2723  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2724
2725  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2726  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2727  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2728  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2729
2730  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2731  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2732  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2733  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2734
2735  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2736  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2737}
2738
2739TEST(MemorySanitizerOrigins, EQ) {
2740  if (!TrackingOrigins()) return;
2741  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2742  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2743  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2744}
2745
2746TEST(MemorySanitizerOrigins, DIV) {
2747  if (!TrackingOrigins()) return;
2748  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2749  unsigned o = __LINE__;
2750  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2751}
2752
2753TEST(MemorySanitizerOrigins, SHIFT) {
2754  if (!TrackingOrigins()) return;
2755  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2756  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2757  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2758  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2759  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2760  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2761}
2762
2763template<class T, int N>
2764void MemCpyTest() {
2765  int ox = __LINE__;
2766  T *x = new T[N];
2767  T *y = new T[N];
2768  T *z = new T[N];
2769  T *q = new T[N];
2770  __msan_poison(x, N * sizeof(T));
2771  __msan_set_origin(x, N * sizeof(T), ox);
2772  __msan_set_origin(y, N * sizeof(T), 777777);
2773  __msan_set_origin(z, N * sizeof(T), 888888);
2774  EXPECT_NOT_POISONED(x);
2775  memcpy(y, x, N * sizeof(T));
2776  EXPECT_POISONED_O(y[0], ox);
2777  EXPECT_POISONED_O(y[N/2], ox);
2778  EXPECT_POISONED_O(y[N-1], ox);
2779  EXPECT_NOT_POISONED(x);
2780  void *res = mempcpy(q, x, N * sizeof(T));
2781  ASSERT_EQ(q + N, res);
2782  EXPECT_POISONED_O(q[0], ox);
2783  EXPECT_POISONED_O(q[N/2], ox);
2784  EXPECT_POISONED_O(q[N-1], ox);
2785  EXPECT_NOT_POISONED(x);
2786  memmove(z, x, N * sizeof(T));
2787  EXPECT_POISONED_O(z[0], ox);
2788  EXPECT_POISONED_O(z[N/2], ox);
2789  EXPECT_POISONED_O(z[N-1], ox);
2790}
2791
2792TEST(MemorySanitizerOrigins, LargeMemCpy) {
2793  if (!TrackingOrigins()) return;
2794  MemCpyTest<U1, 10000>();
2795  MemCpyTest<U8, 10000>();
2796}
2797
2798TEST(MemorySanitizerOrigins, SmallMemCpy) {
2799  if (!TrackingOrigins()) return;
2800  MemCpyTest<U8, 1>();
2801  MemCpyTest<U8, 2>();
2802  MemCpyTest<U8, 3>();
2803}
2804
2805TEST(MemorySanitizerOrigins, Select) {
2806  if (!TrackingOrigins()) return;
2807  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2808  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2809  S4 x;
2810  break_optimization(&x);
2811  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2812
2813  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2814  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2815}
2816
2817extern "C"
2818NOINLINE char AllocaTO() {
2819  int ar[100];
2820  break_optimization(ar);
2821  return ar[10];
2822  // fprintf(stderr, "Descr: %s\n",
2823  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2824}
2825
2826TEST(MemorySanitizerOrigins, Alloca) {
2827  if (!TrackingOrigins()) return;
2828  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2829  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2830  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2831  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2832}
2833
2834// FIXME: replace with a lit-like test.
2835TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2836  if (!TrackingOrigins()) return;
2837  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2838}
2839
2840NOINLINE int RetvalOriginTest(U4 origin) {
2841  int *a = new int;
2842  break_optimization(a);
2843  __msan_set_origin(a, sizeof(*a), origin);
2844  int res = *a;
2845  delete a;
2846  return res;
2847}
2848
2849TEST(MemorySanitizerOrigins, Retval) {
2850  if (!TrackingOrigins()) return;
2851  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2852}
2853
2854NOINLINE void ParamOriginTest(int param, U4 origin) {
2855  EXPECT_POISONED_O(param, origin);
2856}
2857
2858TEST(MemorySanitizerOrigins, Param) {
2859  if (!TrackingOrigins()) return;
2860  int *a = new int;
2861  U4 origin = __LINE__;
2862  break_optimization(a);
2863  __msan_set_origin(a, sizeof(*a), origin);
2864  ParamOriginTest(*a, origin);
2865  delete a;
2866}
2867
2868TEST(MemorySanitizerOrigins, Invoke) {
2869  if (!TrackingOrigins()) return;
2870  StructWithDtor s;  // Will cause the calls to become invokes.
2871  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2872}
2873
2874TEST(MemorySanitizerOrigins, strlen) {
2875  S8 alignment;
2876  break_optimization(&alignment);
2877  char x[4] = {'a', 'b', 0, 0};
2878  __msan_poison(&x[2], 1);
2879  U4 origin = __LINE__;
2880  __msan_set_origin(x, sizeof(x), origin);
2881  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2882}
2883
2884TEST(MemorySanitizerOrigins, wcslen) {
2885  wchar_t w[3] = {'a', 'b', 0};
2886  U4 origin = __LINE__;
2887  __msan_set_origin(w, sizeof(w), origin);
2888  __msan_poison(&w[2], sizeof(wchar_t));
2889  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2890}
2891
2892#if MSAN_HAS_M128
2893TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2894  __m128 x, y;
2895  U4 origin = __LINE__;
2896  __msan_set_origin(&x, sizeof(x), origin);
2897  __msan_poison(&x, sizeof(x));
2898  __builtin_ia32_storeups((float*)&y, x);
2899  EXPECT_POISONED_O(y, origin);
2900}
2901#endif
2902
2903NOINLINE void RecursiveMalloc(int depth) {
2904  static int count;
2905  count++;
2906  if ((count % (1024 * 1024)) == 0)
2907    printf("RecursiveMalloc: %d\n", count);
2908  int *x1 = new int;
2909  int *x2 = new int;
2910  break_optimization(x1);
2911  break_optimization(x2);
2912  if (depth > 0) {
2913    RecursiveMalloc(depth-1);
2914    RecursiveMalloc(depth-1);
2915  }
2916  delete x1;
2917  delete x2;
2918}
2919
2920TEST(MemorySanitizer, CallocOverflow) {
2921  size_t kArraySize = 4096;
2922  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2923  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2924  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2925  EXPECT_EQ(0L, Ident(p));
2926}
2927
2928TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2929  RecursiveMalloc(22);
2930}
2931
2932TEST(MemorySanitizerAllocator, get_estimated_allocated_size) {
2933  size_t sizes[] = {0, 20, 5000, 1<<20};
2934  for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) {
2935    size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]);
2936    EXPECT_EQ(alloc_size, sizes[i]);
2937  }
2938}
2939
2940TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) {
2941  char *array = reinterpret_cast<char*>(malloc(100));
2942  int *int_ptr = new int;
2943
2944  EXPECT_TRUE(__msan_get_ownership(array));
2945  EXPECT_EQ(100, __msan_get_allocated_size(array));
2946
2947  EXPECT_TRUE(__msan_get_ownership(int_ptr));
2948  EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr));
2949
2950  void *wild_addr = reinterpret_cast<void*>(0x1);
2951  EXPECT_FALSE(__msan_get_ownership(wild_addr));
2952  EXPECT_EQ(0, __msan_get_allocated_size(wild_addr));
2953
2954  EXPECT_FALSE(__msan_get_ownership(array + 50));
2955  EXPECT_EQ(0, __msan_get_allocated_size(array + 50));
2956
2957  // NULL is a valid argument for GetAllocatedSize but is not owned.
2958  EXPECT_FALSE(__msan_get_ownership(NULL));
2959  EXPECT_EQ(0, __msan_get_allocated_size(NULL));
2960
2961  free(array);
2962  EXPECT_FALSE(__msan_get_ownership(array));
2963  EXPECT_EQ(0, __msan_get_allocated_size(array));
2964
2965  delete int_ptr;
2966}
2967