msan_test.cc revision 08104e6f77f4e5279f8cb4a74784ffb7afd5073f 
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
30#include <arpa/inet.h>
31#include <dlfcn.h>
32#include <grp.h>
33#include <unistd.h>
34#include <link.h>
35#include <limits.h>
36#include <sys/time.h>
37#include <sys/types.h>
38#include <sys/stat.h>
39#include <fcntl.h>
40#include <sys/resource.h>
41#include <sys/ioctl.h>
42#include <sys/sysinfo.h>
43#include <sys/utsname.h>
44#include <sys/mman.h>
45#include <sys/vfs.h>
46#include <dirent.h>
47#include <pwd.h>
48#include <sys/socket.h>
49#include <netdb.h>
50
51#if defined(__i386__) || defined(__x86_64__)
52# include <emmintrin.h>
53# define MSAN_HAS_M128 1
54#else
55# define MSAN_HAS_M128 0
56#endif
57
58typedef unsigned char      U1;
59typedef unsigned short     U2;  // NOLINT
60typedef unsigned int       U4;
61typedef unsigned long long U8;  // NOLINT
62typedef   signed char      S1;
63typedef   signed short     S2;  // NOLINT
64typedef   signed int       S4;
65typedef   signed long long S8;  // NOLINT
66#define NOINLINE      __attribute__((noinline))
67#define INLINE      __attribute__((always_inline))
68
69static bool TrackingOrigins() {
70  S8 x;
71  __msan_set_origin(&x, sizeof(x), 0x1234);
72  U4 origin = __msan_get_origin(&x);
73  __msan_set_origin(&x, sizeof(x), 0);
74  return origin == 0x1234;
75}
76
77#define EXPECT_UMR(action) \
78    do {                        \
79      __msan_set_expect_umr(1); \
80      action;                   \
81      __msan_set_expect_umr(0); \
82    } while (0)
83
84#define EXPECT_UMR_O(action, origin) \
85    do {                                            \
86      __msan_set_expect_umr(1);                     \
87      action;                                       \
88      __msan_set_expect_umr(0);                     \
89      if (TrackingOrigins())                        \
90        EXPECT_EQ(origin, __msan_get_umr_origin()); \
91    } while (0)
92
93#define EXPECT_UMR_S(action, stack_origin) \
94    do {                                            \
95      __msan_set_expect_umr(1);                     \
96      action;                                       \
97      __msan_set_expect_umr(0);                     \
98      U4 id = __msan_get_umr_origin();             \
99      const char *str = __msan_get_origin_descr_if_stack(id); \
100      if (!str || strcmp(str, stack_origin)) {      \
101        fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \
102                id, stack_origin, str);  \
103        EXPECT_EQ(1, 0);                            \
104      }                                             \
105    } while (0)
106
107#define EXPECT_POISONED(x) ExpectPoisoned(x)
108
109template<typename T>
110void ExpectPoisoned(const T& t) {
111  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
112}
113
114#define EXPECT_POISONED_O(x, origin) \
115  ExpectPoisonedWithOrigin(x, origin)
116
117template<typename T>
118void ExpectPoisonedWithOrigin(const T& t, unsigned origin) {
119  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
120  if (TrackingOrigins())
121    EXPECT_EQ(origin, __msan_get_origin((void*)&t));
122}
123
124#define EXPECT_POISONED_S(x, stack_origin) \
125  ExpectPoisonedWithStackOrigin(x, stack_origin)
126
127template<typename T>
128void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) {
129  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
130  U4 id = __msan_get_origin((void*)&t);
131  const char *str = __msan_get_origin_descr_if_stack(id);
132  if (!str || strcmp(str, stack_origin)) {
133    fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s",
134        id, stack_origin, str);
135    EXPECT_EQ(1, 0);
136  }
137}
138
139#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x)
140
141template<typename T>
142void ExpectNotPoisoned(const T& t) {
143  EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t)));
144}
145
146static U8 poisoned_array[100];
147template<class T>
148T *GetPoisoned(int i = 0, T val = 0) {
149  T *res = (T*)&poisoned_array[i];
150  *res = val;
151  __msan_poison(&poisoned_array[i], sizeof(T));
152  return res;
153}
154
155template<class T>
156T *GetPoisonedO(int i, U4 origin, T val = 0) {
157  T *res = (T*)&poisoned_array[i];
158  *res = val;
159  __msan_poison(&poisoned_array[i], sizeof(T));
160  __msan_set_origin(&poisoned_array[i], sizeof(T), origin);
161  return res;
162}
163
164// This function returns its parameter but in such a way that compiler
165// can not prove it.
166template<class T>
167NOINLINE
168static T Ident(T t) {
169  volatile T ret = t;
170  return ret;
171}
172
173template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); }
174
175static volatile int g_one = 1;
176static volatile int g_zero = 0;
177static volatile int g_0 = 0;
178static volatile int g_1 = 1;
179
180S4 a_s4[100];
181S8 a_s8[100];
182
183// Check that malloc poisons memory.
184// A lot of tests below depend on this.
185TEST(MemorySanitizerSanity, PoisonInMalloc) {
186  int *x = (int*)malloc(sizeof(int));
187  EXPECT_POISONED(*x);
188  free(x);
189}
190
191TEST(MemorySanitizer, NegativeTest1) {
192  S4 *x = GetPoisoned<S4>();
193  if (g_one)
194    *x = 0;
195  EXPECT_NOT_POISONED(*x);
196}
197
198TEST(MemorySanitizer, PositiveTest1) {
199  // Load to store.
200  EXPECT_POISONED(*GetPoisoned<S1>());
201  EXPECT_POISONED(*GetPoisoned<S2>());
202  EXPECT_POISONED(*GetPoisoned<S4>());
203  EXPECT_POISONED(*GetPoisoned<S8>());
204
205  // S->S conversions.
206  EXPECT_POISONED(*GetPoisoned<S1>());
207  EXPECT_POISONED(*GetPoisoned<S1>());
208  EXPECT_POISONED(*GetPoisoned<S1>());
209
210  EXPECT_POISONED(*GetPoisoned<S2>());
211  EXPECT_POISONED(*GetPoisoned<S2>());
212  EXPECT_POISONED(*GetPoisoned<S2>());
213
214  EXPECT_POISONED(*GetPoisoned<S4>());
215  EXPECT_POISONED(*GetPoisoned<S4>());
216  EXPECT_POISONED(*GetPoisoned<S4>());
217
218  EXPECT_POISONED(*GetPoisoned<S8>());
219  EXPECT_POISONED(*GetPoisoned<S8>());
220  EXPECT_POISONED(*GetPoisoned<S8>());
221
222  // ZExt
223  EXPECT_POISONED(*GetPoisoned<U1>());
224  EXPECT_POISONED(*GetPoisoned<U1>());
225  EXPECT_POISONED(*GetPoisoned<U1>());
226  EXPECT_POISONED(*GetPoisoned<U2>());
227  EXPECT_POISONED(*GetPoisoned<U2>());
228  EXPECT_POISONED(*GetPoisoned<U4>());
229
230  // Unary ops.
231  EXPECT_POISONED(- *GetPoisoned<S4>());
232
233  EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1));
234
235
236  a_s4[g_zero] = 1 - *GetPoisoned<S4>();
237  a_s4[g_zero] = 1 + *GetPoisoned<S4>();
238}
239
240TEST(MemorySanitizer, Phi1) {
241  S4 c;
242  if (g_one) {
243    c = *GetPoisoned<S4>();
244  } else {
245    break_optimization(0);
246    c = 0;
247  }
248  EXPECT_POISONED(c);
249}
250
251TEST(MemorySanitizer, Phi2) {
252  S4 i = *GetPoisoned<S4>();
253  S4 n = g_one;
254  EXPECT_UMR(for (; i < g_one; i++););
255  EXPECT_POISONED(i);
256}
257
258NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); }
259NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); }
260NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); }
261
262TEST(MemorySanitizer, ArgTest) {
263  Arg1ExpectUMR(*GetPoisoned<S4>());
264  Arg2ExpectUMR(0, *GetPoisoned<S4>());
265  Arg3ExpectUMR(0, 1, *GetPoisoned<S8>());
266}
267
268
269TEST(MemorySanitizer, CallAndRet) {
270  if (!__msan_has_dynamic_component()) return;
271  ReturnPoisoned<S1>();
272  ReturnPoisoned<S2>();
273  ReturnPoisoned<S4>();
274  ReturnPoisoned<S8>();
275
276  EXPECT_POISONED(ReturnPoisoned<S1>());
277  EXPECT_POISONED(ReturnPoisoned<S2>());
278  EXPECT_POISONED(ReturnPoisoned<S4>());
279  EXPECT_POISONED(ReturnPoisoned<S8>());
280}
281
282// malloc() in the following test may be optimized to produce a compile-time
283// undef value. Check that we trap on the volatile assignment anyway.
284TEST(MemorySanitizer, DISABLED_MallocNoIdent) {
285  S4 *x = (int*)malloc(sizeof(S4));
286  EXPECT_POISONED(*x);
287  free(x);
288}
289
290TEST(MemorySanitizer, Malloc) {
291  S4 *x = (int*)Ident(malloc(sizeof(S4)));
292  EXPECT_POISONED(*x);
293  free(x);
294}
295
296TEST(MemorySanitizer, Realloc) {
297  S4 *x = (int*)Ident(realloc(0, sizeof(S4)));
298  EXPECT_POISONED(x[0]);
299  x[0] = 1;
300  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
301  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
302  EXPECT_POISONED(x[1]);
303  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
304  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
305  EXPECT_POISONED(x[2]);
306  EXPECT_POISONED(x[1]);
307  x[2] = 1;  // Init this here. Check that after realloc it is poisoned again.
308  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
309  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
310  EXPECT_POISONED(x[1]);
311  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
312  EXPECT_POISONED(x[1]);
313  EXPECT_POISONED(x[2]);
314  free(x);
315}
316
317TEST(MemorySanitizer, Calloc) {
318  S4 *x = (int*)Ident(calloc(1, sizeof(S4)));
319  EXPECT_NOT_POISONED(*x);  // Should not be poisoned.
320  // EXPECT_EQ(0, *x);
321  free(x);
322}
323
324TEST(MemorySanitizer, AndOr) {
325  U4 *p = GetPoisoned<U4>();
326  // We poison two bytes in the midle of a 4-byte word to make the test
327  // correct regardless of endianness.
328  ((U1*)p)[1] = 0;
329  ((U1*)p)[2] = 0xff;
330  EXPECT_NOT_POISONED(*p & 0x00ffff00);
331  EXPECT_NOT_POISONED(*p & 0x00ff0000);
332  EXPECT_NOT_POISONED(*p & 0x0000ff00);
333  EXPECT_POISONED(*p & 0xff000000);
334  EXPECT_POISONED(*p & 0x000000ff);
335  EXPECT_POISONED(*p & 0x0000ffff);
336  EXPECT_POISONED(*p & 0xffff0000);
337
338  EXPECT_NOT_POISONED(*p | 0xff0000ff);
339  EXPECT_NOT_POISONED(*p | 0xff00ffff);
340  EXPECT_NOT_POISONED(*p | 0xffff00ff);
341  EXPECT_POISONED(*p | 0xff000000);
342  EXPECT_POISONED(*p | 0x000000ff);
343  EXPECT_POISONED(*p | 0x0000ffff);
344  EXPECT_POISONED(*p | 0xffff0000);
345
346  EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>());
347}
348
349template<class T>
350static bool applyNot(T value, T shadow) {
351  __msan_partial_poison(&value, &shadow, sizeof(T));
352  return !value;
353}
354
355TEST(MemorySanitizer, Not) {
356  EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0));
357  EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0));
358  EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF));
359  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF));
360  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF));
361  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF));
362  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000));
363  EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000));
364  EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000));
365  EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000));
366
367  EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0));
368  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE));
369  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0));
370  EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF));
371
372  EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1)));
373  EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2)));
374}
375
376TEST(MemorySanitizer, Shift) {
377  U4 *up = GetPoisoned<U4>();
378  ((U1*)up)[0] = 0;
379  ((U1*)up)[3] = 0xff;
380  EXPECT_NOT_POISONED(*up >> 30);
381  EXPECT_NOT_POISONED(*up >> 24);
382  EXPECT_POISONED(*up >> 23);
383  EXPECT_POISONED(*up >> 10);
384
385  EXPECT_NOT_POISONED(*up << 30);
386  EXPECT_NOT_POISONED(*up << 24);
387  EXPECT_POISONED(*up << 23);
388  EXPECT_POISONED(*up << 10);
389
390  S4 *sp = (S4*)up;
391  EXPECT_NOT_POISONED(*sp >> 30);
392  EXPECT_NOT_POISONED(*sp >> 24);
393  EXPECT_POISONED(*sp >> 23);
394  EXPECT_POISONED(*sp >> 10);
395
396  sp = GetPoisoned<S4>();
397  ((S1*)sp)[1] = 0;
398  ((S1*)sp)[2] = 0;
399  EXPECT_POISONED(*sp >> 31);
400
401  EXPECT_POISONED(100 >> *GetPoisoned<S4>());
402  EXPECT_POISONED(100U >> *GetPoisoned<S4>());
403}
404
405NOINLINE static int GetPoisonedZero() {
406  int *zero = new int;
407  *zero = 0;
408  __msan_poison(zero, sizeof(*zero));
409  int res = *zero;
410  delete zero;
411  return res;
412}
413
414TEST(MemorySanitizer, LoadFromDirtyAddress) {
415  int *a = new int;
416  *a = 0;
417  EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()]));
418  delete a;
419}
420
421TEST(MemorySanitizer, StoreToDirtyAddress) {
422  int *a = new int;
423  EXPECT_UMR(a[GetPoisonedZero()] = 0);
424  break_optimization(a);
425  delete a;
426}
427
428
429NOINLINE void StackTestFunc() {
430  S4 p4;
431  S4 ok4 = 1;
432  S2 p2;
433  S2 ok2 = 1;
434  S1 p1;
435  S1 ok1 = 1;
436  break_optimization(&p4);
437  break_optimization(&ok4);
438  break_optimization(&p2);
439  break_optimization(&ok2);
440  break_optimization(&p1);
441  break_optimization(&ok1);
442
443  EXPECT_POISONED(p4);
444  EXPECT_POISONED(p2);
445  EXPECT_POISONED(p1);
446  EXPECT_NOT_POISONED(ok1);
447  EXPECT_NOT_POISONED(ok2);
448  EXPECT_NOT_POISONED(ok4);
449}
450
451TEST(MemorySanitizer, StackTest) {
452  StackTestFunc();
453}
454
455NOINLINE void StackStressFunc() {
456  int foo[10000];
457  break_optimization(foo);
458}
459
460TEST(MemorySanitizer, DISABLED_StackStressTest) {
461  for (int i = 0; i < 1000000; i++)
462    StackStressFunc();
463}
464
465template<class T>
466void TestFloatingPoint() {
467  static volatile T v;
468  static T g[100];
469  break_optimization(&g);
470  T *x = GetPoisoned<T>();
471  T *y = GetPoisoned<T>(1);
472  EXPECT_POISONED(*x);
473  EXPECT_POISONED((long long)*x);
474  EXPECT_POISONED((int)*x);
475  g[0] = *x;
476  g[1] = *x + *y;
477  g[2] = *x - *y;
478  g[3] = *x * *y;
479}
480
481TEST(MemorySanitizer, FloatingPointTest) {
482  TestFloatingPoint<float>();
483  TestFloatingPoint<double>();
484}
485
486TEST(MemorySanitizer, DynMem) {
487  S4 x = 0;
488  S4 *y = GetPoisoned<S4>();
489  memcpy(y, &x, g_one * sizeof(S4));
490  EXPECT_NOT_POISONED(*y);
491}
492
493static char *DynRetTestStr;
494
495TEST(MemorySanitizer, DynRet) {
496  if (!__msan_has_dynamic_component()) return;
497  ReturnPoisoned<S8>();
498  EXPECT_NOT_POISONED(clearenv());
499}
500
501
502TEST(MemorySanitizer, DynRet1) {
503  if (!__msan_has_dynamic_component()) return;
504  ReturnPoisoned<S8>();
505}
506
507struct LargeStruct {
508  S4 x[10];
509};
510
511NOINLINE
512LargeStruct LargeRetTest() {
513  LargeStruct res;
514  res.x[0] = *GetPoisoned<S4>();
515  res.x[1] = *GetPoisoned<S4>();
516  res.x[2] = *GetPoisoned<S4>();
517  res.x[3] = *GetPoisoned<S4>();
518  res.x[4] = *GetPoisoned<S4>();
519  res.x[5] = *GetPoisoned<S4>();
520  res.x[6] = *GetPoisoned<S4>();
521  res.x[7] = *GetPoisoned<S4>();
522  res.x[8] = *GetPoisoned<S4>();
523  res.x[9] = *GetPoisoned<S4>();
524  return res;
525}
526
527TEST(MemorySanitizer, strcmp) {
528  char s1[10];
529  char s2[10];
530  strncpy(s1, "foo", 10);
531  s2[0] = 'f';
532  s2[1] = 'n';
533  EXPECT_GT(strcmp(s1, s2), 0);
534  s2[1] = 'o';
535  int res;
536  EXPECT_UMR(res = strcmp(s1, s2));
537  EXPECT_NOT_POISONED(res);
538  EXPECT_EQ(strncmp(s1, s2, 1), 0);
539}
540
541TEST(MemorySanitizer, LargeRet) {
542  LargeStruct a = LargeRetTest();
543  EXPECT_POISONED(a.x[0]);
544  EXPECT_POISONED(a.x[9]);
545}
546
547TEST(MemorySanitizer, fread) {
548  char *x = new char[32];
549  FILE *f = fopen("/proc/self/stat", "r");
550  assert(f);
551  fread(x, 1, 32, f);
552  EXPECT_NOT_POISONED(x[0]);
553  EXPECT_NOT_POISONED(x[16]);
554  EXPECT_NOT_POISONED(x[31]);
555  fclose(f);
556  delete x;
557}
558
559TEST(MemorySanitizer, read) {
560  char *x = new char[32];
561  int fd = open("/proc/self/stat", O_RDONLY);
562  assert(fd > 0);
563  int sz = read(fd, x, 32);
564  assert(sz == 32);
565  EXPECT_NOT_POISONED(x[0]);
566  EXPECT_NOT_POISONED(x[16]);
567  EXPECT_NOT_POISONED(x[31]);
568  close(fd);
569  delete x;
570}
571
572TEST(MemorySanitizer, pread) {
573  char *x = new char[32];
574  int fd = open("/proc/self/stat", O_RDONLY);
575  assert(fd > 0);
576  int sz = pread(fd, x, 32, 0);
577  assert(sz == 32);
578  EXPECT_NOT_POISONED(x[0]);
579  EXPECT_NOT_POISONED(x[16]);
580  EXPECT_NOT_POISONED(x[31]);
581  close(fd);
582  delete x;
583}
584
585TEST(MemorySanitizer, readv) {
586  char buf[2011];
587  struct iovec iov[2];
588  iov[0].iov_base = buf + 1;
589  iov[0].iov_len = 5;
590  iov[1].iov_base = buf + 10;
591  iov[1].iov_len = 2000;
592  int fd = open("/proc/self/stat", O_RDONLY);
593  assert(fd > 0);
594  int sz = readv(fd, iov, 2);
595  ASSERT_LT(sz, 5 + 2000);
596  ASSERT_GT(sz, iov[0].iov_len);
597  EXPECT_POISONED(buf[0]);
598  EXPECT_NOT_POISONED(buf[1]);
599  EXPECT_NOT_POISONED(buf[5]);
600  EXPECT_POISONED(buf[6]);
601  EXPECT_POISONED(buf[9]);
602  EXPECT_NOT_POISONED(buf[10]);
603  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
604  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
605  close(fd);
606}
607
608TEST(MemorySanitizer, preadv) {
609  char buf[2011];
610  struct iovec iov[2];
611  iov[0].iov_base = buf + 1;
612  iov[0].iov_len = 5;
613  iov[1].iov_base = buf + 10;
614  iov[1].iov_len = 2000;
615  int fd = open("/proc/self/stat", O_RDONLY);
616  assert(fd > 0);
617  int sz = preadv(fd, iov, 2, 3);
618  ASSERT_LT(sz, 5 + 2000);
619  ASSERT_GT(sz, iov[0].iov_len);
620  EXPECT_POISONED(buf[0]);
621  EXPECT_NOT_POISONED(buf[1]);
622  EXPECT_NOT_POISONED(buf[5]);
623  EXPECT_POISONED(buf[6]);
624  EXPECT_POISONED(buf[9]);
625  EXPECT_NOT_POISONED(buf[10]);
626  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
627  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
628  close(fd);
629}
630
631// FIXME: fails now.
632TEST(MemorySanitizer, DISABLED_ioctl) {
633  struct winsize ws;
634  EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0);
635  EXPECT_NOT_POISONED(ws.ws_col);
636}
637
638TEST(MemorySanitizer, readlink) {
639  char *x = new char[1000];
640  readlink("/proc/self/exe", x, 1000);
641  EXPECT_NOT_POISONED(x[0]);
642  delete [] x;
643}
644
645
646TEST(MemorySanitizer, stat) {
647  struct stat* st = new struct stat;
648  int res = stat("/proc/self/stat", st);
649  assert(!res);
650  EXPECT_NOT_POISONED(st->st_dev);
651  EXPECT_NOT_POISONED(st->st_mode);
652  EXPECT_NOT_POISONED(st->st_size);
653}
654
655TEST(MemorySanitizer, statfs) {
656  struct statfs* st = new struct statfs;
657  int res = statfs("/", st);
658  assert(!res);
659  EXPECT_NOT_POISONED(st->f_type);
660  EXPECT_NOT_POISONED(st->f_bfree);
661  EXPECT_NOT_POISONED(st->f_namelen);
662}
663
664TEST(MemorySanitizer, pipe) {
665  int* pipefd = new int[2];
666  int res = pipe(pipefd);
667  assert(!res);
668  EXPECT_NOT_POISONED(pipefd[0]);
669  EXPECT_NOT_POISONED(pipefd[1]);
670  close(pipefd[0]);
671  close(pipefd[1]);
672}
673
674TEST(MemorySanitizer, pipe2) {
675  int* pipefd = new int[2];
676  int res = pipe2(pipefd, O_NONBLOCK);
677  assert(!res);
678  EXPECT_NOT_POISONED(pipefd[0]);
679  EXPECT_NOT_POISONED(pipefd[1]);
680  close(pipefd[0]);
681  close(pipefd[1]);
682}
683
684TEST(MemorySanitizer, socketpair) {
685  int sv[2];
686  int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
687  assert(!res);
688  EXPECT_NOT_POISONED(sv[0]);
689  EXPECT_NOT_POISONED(sv[1]);
690  close(sv[0]);
691  close(sv[1]);
692}
693
694TEST(MemorySanitizer, bind_getsockname) {
695  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
696
697  struct sockaddr_in sai;
698  memset(&sai, 0, sizeof(sai));
699  sai.sin_family = AF_UNIX;
700  int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai));
701
702  assert(!res);
703  char buf[200];
704  socklen_t addrlen;
705  EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen));
706
707  addrlen = sizeof(buf);
708  res = getsockname(sock, (struct sockaddr *)&buf, &addrlen);
709  EXPECT_NOT_POISONED(addrlen);
710  EXPECT_NOT_POISONED(buf[0]);
711  EXPECT_NOT_POISONED(buf[addrlen - 1]);
712  EXPECT_POISONED(buf[addrlen]);
713  close(sock);
714}
715
716TEST(MemorySanitizer, accept) {
717  int listen_socket = socket(AF_INET, SOCK_STREAM, 0);
718  ASSERT_LT(0, listen_socket);
719
720  struct sockaddr_in sai;
721  sai.sin_family = AF_INET;
722  sai.sin_port = 0;
723  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
724  int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai));
725  ASSERT_EQ(0, res);
726
727  res = listen(listen_socket, 1);
728  ASSERT_EQ(0, res);
729
730  socklen_t sz = sizeof(sai);
731  res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz);
732  ASSERT_EQ(0, res);
733  ASSERT_EQ(sizeof(sai), sz);
734
735  int connect_socket = socket(AF_INET, SOCK_STREAM, 0);
736  ASSERT_LT(0, connect_socket);
737  res = fcntl(connect_socket, F_SETFL, O_NONBLOCK);
738  ASSERT_EQ(0, res);
739  res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai));
740  ASSERT_EQ(-1, res);
741  ASSERT_EQ(EINPROGRESS, errno);
742
743  __msan_poison(&sai, sizeof(sai));
744  int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz);
745  ASSERT_LT(0, new_sock);
746  ASSERT_EQ(sizeof(sai), sz);
747  EXPECT_NOT_POISONED(sai);
748
749  __msan_poison(&sai, sizeof(sai));
750  res = getpeername(new_sock, (struct sockaddr *)&sai, &sz);
751  ASSERT_EQ(0, res);
752  ASSERT_EQ(sizeof(sai), sz);
753  EXPECT_NOT_POISONED(sai);
754
755  close(new_sock);
756  close(connect_socket);
757  close(listen_socket);
758}
759
760TEST(MemorySanitizer, getaddrinfo) {
761  struct addrinfo *ai;
762  struct addrinfo hints;
763  memset(&hints, 0, sizeof(hints));
764  hints.ai_family = AF_INET;
765  int res = getaddrinfo("localhost", NULL, &hints, &ai);
766  ASSERT_EQ(0, res);
767  EXPECT_NOT_POISONED(*ai);
768  ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen);
769  EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr);
770}
771
772TEST(MemorySanitizer, getnameinfo) {
773  struct sockaddr_in sai;
774  sai.sin_family = AF_INET;
775  sai.sin_port = 80;
776  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
777  char host[500];
778  char serv[500];
779  int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host,
780                        sizeof(host), serv, sizeof(serv), 0);
781  ASSERT_EQ(0, res);
782  EXPECT_NOT_POISONED(host[0]);
783  EXPECT_POISONED(host[sizeof(host) - 1]);
784
785  ASSERT_NE(0, strlen(host));
786  EXPECT_NOT_POISONED(serv[0]);
787  EXPECT_POISONED(serv[sizeof(serv) - 1]);
788  ASSERT_NE(0, strlen(serv));
789}
790
791#define EXPECT_HOSTENT_NOT_POISONED(he)        \
792  do {                                         \
793    EXPECT_NOT_POISONED(*(he));                \
794    ASSERT_NE((void *) 0, (he)->h_name);       \
795    ASSERT_NE((void *) 0, (he)->h_aliases);    \
796    ASSERT_NE((void *) 0, (he)->h_addr_list);  \
797    EXPECT_NOT_POISONED(strlen((he)->h_name)); \
798    char **p = (he)->h_aliases;                \
799    while (*p) {                               \
800      EXPECT_NOT_POISONED(strlen(*p));         \
801      ++p;                                     \
802    }                                          \
803    char **q = (he)->h_addr_list;              \
804    while (*q) {                               \
805      EXPECT_NOT_POISONED(*q[0]);              \
806      ++q;                                     \
807    }                                          \
808    EXPECT_NOT_POISONED(*q);                   \
809  } while (0)
810
811TEST(MemorySanitizer, gethostent) {
812  struct hostent *he = gethostent();
813  ASSERT_NE((void *)NULL, he);
814  EXPECT_HOSTENT_NOT_POISONED(he);
815}
816
817#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME
818
819TEST(MemorySanitizer, gethostbyname) {
820  struct hostent *he = gethostbyname("localhost");
821  ASSERT_NE((void *)NULL, he);
822  EXPECT_HOSTENT_NOT_POISONED(he);
823}
824
825#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME
826
827TEST(MemorySanitizer, gethostbyname2) {
828  struct hostent *he = gethostbyname2("localhost", AF_INET);
829  ASSERT_NE((void *)NULL, he);
830  EXPECT_HOSTENT_NOT_POISONED(he);
831}
832
833TEST(MemorySanitizer, gethostbyaddr) {
834  in_addr_t addr = inet_addr("127.0.0.1");
835  EXPECT_NOT_POISONED(addr);
836  struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
837  ASSERT_NE((void *)NULL, he);
838  EXPECT_HOSTENT_NOT_POISONED(he);
839}
840
841TEST(MemorySanitizer, gethostent_r) {
842  char buf[2000];
843  struct hostent he;
844  struct hostent *result;
845  int err;
846  int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
847  ASSERT_EQ(0, res);
848  EXPECT_NOT_POISONED(result);
849  ASSERT_NE((void *)NULL, result);
850  EXPECT_HOSTENT_NOT_POISONED(result);
851  EXPECT_NOT_POISONED(err);
852}
853
854TEST(MemorySanitizer, gethostbyname_r) {
855  char buf[2000];
856  struct hostent he;
857  struct hostent *result;
858  int err;
859  int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
860  ASSERT_EQ(0, res);
861  EXPECT_NOT_POISONED(result);
862  ASSERT_NE((void *)NULL, result);
863  EXPECT_HOSTENT_NOT_POISONED(result);
864  EXPECT_NOT_POISONED(err);
865}
866
867TEST(MemorySanitizer, gethostbyname2_r) {
868  char buf[2000];
869  struct hostent he;
870  struct hostent *result;
871  int err;
872  int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
873                             &result, &err);
874  ASSERT_EQ(0, res);
875  EXPECT_NOT_POISONED(result);
876  ASSERT_NE((void *)NULL, result);
877  EXPECT_HOSTENT_NOT_POISONED(result);
878  EXPECT_NOT_POISONED(err);
879}
880
881TEST(MemorySanitizer, gethostbyaddr_r) {
882  char buf[2000];
883  struct hostent he;
884  struct hostent *result;
885  int err;
886  in_addr_t addr = inet_addr("127.0.0.1");
887  EXPECT_NOT_POISONED(addr);
888  int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
889                            &result, &err);
890  ASSERT_EQ(0, res);
891  EXPECT_NOT_POISONED(result);
892  ASSERT_NE((void *)NULL, result);
893  EXPECT_HOSTENT_NOT_POISONED(result);
894  EXPECT_NOT_POISONED(err);
895}
896
897TEST(MemorySanitizer, getsockopt) {
898  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
899  struct linger l[2];
900  socklen_t sz = sizeof(l[0]);
901  int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
902  ASSERT_EQ(0, res);
903  ASSERT_EQ(sizeof(l[0]), sz);
904  EXPECT_NOT_POISONED(l[0]);
905  EXPECT_POISONED(*(char *)(l + 1));
906}
907
908TEST(MemorySanitizer, getcwd) {
909  char path[PATH_MAX + 1];
910  char* res = getcwd(path, sizeof(path));
911  assert(res);
912  EXPECT_NOT_POISONED(path[0]);
913}
914
915TEST(MemorySanitizer, getcwd_gnu) {
916  char* res = getcwd(NULL, 0);
917  assert(res);
918  EXPECT_NOT_POISONED(res[0]);
919  free(res);
920}
921
922TEST(MemorySanitizer, get_current_dir_name) {
923  char* res = get_current_dir_name();
924  assert(res);
925  EXPECT_NOT_POISONED(res[0]);
926  free(res);
927}
928
929TEST(MemorySanitizer, confstr) {
930  char buf[3];
931  size_t res = confstr(_CS_PATH, buf, sizeof(buf));
932  ASSERT_GT(res, sizeof(buf));
933  EXPECT_NOT_POISONED(buf[0]);
934  EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]);
935
936  char buf2[1000];
937  res = confstr(_CS_PATH, buf2, sizeof(buf2));
938  ASSERT_LT(res, sizeof(buf2));
939  EXPECT_NOT_POISONED(buf2[0]);
940  EXPECT_NOT_POISONED(buf2[res - 1]);
941  EXPECT_POISONED(buf2[res]);
942  ASSERT_EQ(res, strlen(buf2) + 1);
943}
944
945TEST(MemorySanitizer, readdir) {
946  DIR *dir = opendir(".");
947  struct dirent *d = readdir(dir);
948  assert(d);
949  EXPECT_NOT_POISONED(d->d_name[0]);
950  closedir(dir);
951}
952
953TEST(MemorySanitizer, readdir_r) {
954  DIR *dir = opendir(".");
955  struct dirent d;
956  struct dirent *pd;
957  int res = readdir_r(dir, &d, &pd);
958  assert(!res);
959  EXPECT_NOT_POISONED(pd);
960  EXPECT_NOT_POISONED(d.d_name[0]);
961  closedir(dir);
962}
963
964TEST(MemorySanitizer, realpath) {
965  const char* relpath = ".";
966  char path[PATH_MAX + 1];
967  char* res = realpath(relpath, path);
968  assert(res);
969  EXPECT_NOT_POISONED(path[0]);
970}
971
972TEST(MemorySanitizer, realpath_null) {
973  const char* relpath = ".";
974  char* res = realpath(relpath, NULL);
975  printf("%d, %s\n", errno, strerror(errno));
976  assert(res);
977  EXPECT_NOT_POISONED(res[0]);
978  free(res);
979}
980
981TEST(MemorySanitizer, canonicalize_file_name) {
982  const char* relpath = ".";
983  char* res = canonicalize_file_name(relpath);
984  assert(res);
985  EXPECT_NOT_POISONED(res[0]);
986  free(res);
987}
988
989extern char **environ;
990
991TEST(MemorySanitizer, setenv) {
992  setenv("AAA", "BBB", 1);
993  for (char **envp = environ; *envp; ++envp) {
994    EXPECT_NOT_POISONED(*envp);
995    EXPECT_NOT_POISONED(*envp[0]);
996  }
997}
998
999TEST(MemorySanitizer, putenv) {
1000  char s[] = "AAA=BBB";
1001  putenv(s);
1002  for (char **envp = environ; *envp; ++envp) {
1003    EXPECT_NOT_POISONED(*envp);
1004    EXPECT_NOT_POISONED(*envp[0]);
1005  }
1006}
1007
1008TEST(MemorySanitizer, memcpy) {
1009  char* x = new char[2];
1010  char* y = new char[2];
1011  x[0] = 1;
1012  x[1] = *GetPoisoned<char>();
1013  memcpy(y, x, 2);
1014  EXPECT_NOT_POISONED(y[0]);
1015  EXPECT_POISONED(y[1]);
1016}
1017
1018TEST(MemorySanitizer, memmove) {
1019  char* x = new char[2];
1020  char* y = new char[2];
1021  x[0] = 1;
1022  x[1] = *GetPoisoned<char>();
1023  memmove(y, x, 2);
1024  EXPECT_NOT_POISONED(y[0]);
1025  EXPECT_POISONED(y[1]);
1026}
1027
1028TEST(MemorySanitizer, bcopy) {
1029  char* x = new char[2];
1030  char* y = new char[2];
1031  x[0] = 1;
1032  x[1] = *GetPoisoned<char>();
1033  bcopy(x, y, 2);
1034  EXPECT_NOT_POISONED(y[0]);
1035  EXPECT_POISONED(y[1]);
1036}
1037
1038TEST(MemorySanitizer, strdup) {
1039  char buf[4] = "abc";
1040  __msan_poison(buf + 2, sizeof(*buf));
1041  char *x = strdup(buf);
1042  EXPECT_NOT_POISONED(x[0]);
1043  EXPECT_NOT_POISONED(x[1]);
1044  EXPECT_POISONED(x[2]);
1045  EXPECT_NOT_POISONED(x[3]);
1046  free(x);
1047}
1048
1049TEST(MemorySanitizer, strndup) {
1050  char buf[4] = "abc";
1051  __msan_poison(buf + 2, sizeof(*buf));
1052  char *x = strndup(buf, 3);
1053  EXPECT_NOT_POISONED(x[0]);
1054  EXPECT_NOT_POISONED(x[1]);
1055  EXPECT_POISONED(x[2]);
1056  EXPECT_NOT_POISONED(x[3]);
1057  free(x);
1058}
1059
1060TEST(MemorySanitizer, strndup_short) {
1061  char buf[4] = "abc";
1062  __msan_poison(buf + 1, sizeof(*buf));
1063  __msan_poison(buf + 2, sizeof(*buf));
1064  char *x = strndup(buf, 2);
1065  EXPECT_NOT_POISONED(x[0]);
1066  EXPECT_POISONED(x[1]);
1067  EXPECT_NOT_POISONED(x[2]);
1068  free(x);
1069}
1070
1071
1072template<class T, int size>
1073void TestOverlapMemmove() {
1074  T *x = new T[size];
1075  assert(size >= 3);
1076  x[2] = 0;
1077  memmove(x, x + 1, (size - 1) * sizeof(T));
1078  EXPECT_NOT_POISONED(x[1]);
1079  if (!__msan_has_dynamic_component()) {
1080    // FIXME: under DR we will lose this information
1081    // because accesses in memmove will unpoisin the shadow.
1082    // We need to use our own memove implementation instead of libc's.
1083    EXPECT_POISONED(x[0]);
1084    EXPECT_POISONED(x[2]);
1085  }
1086  delete [] x;
1087}
1088
1089TEST(MemorySanitizer, overlap_memmove) {
1090  TestOverlapMemmove<U1, 10>();
1091  TestOverlapMemmove<U1, 1000>();
1092  TestOverlapMemmove<U8, 4>();
1093  TestOverlapMemmove<U8, 1000>();
1094}
1095
1096TEST(MemorySanitizer, strcpy) {  // NOLINT
1097  char* x = new char[3];
1098  char* y = new char[3];
1099  x[0] = 'a';
1100  x[1] = *GetPoisoned<char>(1, 1);
1101  x[2] = 0;
1102  strcpy(y, x);  // NOLINT
1103  EXPECT_NOT_POISONED(y[0]);
1104  EXPECT_POISONED(y[1]);
1105  EXPECT_NOT_POISONED(y[2]);
1106}
1107
1108TEST(MemorySanitizer, strncpy) {  // NOLINT
1109  char* x = new char[3];
1110  char* y = new char[3];
1111  x[0] = 'a';
1112  x[1] = *GetPoisoned<char>(1, 1);
1113  x[2] = 0;
1114  strncpy(y, x, 2);  // NOLINT
1115  EXPECT_NOT_POISONED(y[0]);
1116  EXPECT_POISONED(y[1]);
1117  EXPECT_POISONED(y[2]);
1118}
1119
1120TEST(MemorySanitizer, stpcpy) {  // NOLINT
1121  char* x = new char[3];
1122  char* y = new char[3];
1123  x[0] = 'a';
1124  x[1] = *GetPoisoned<char>(1, 1);
1125  x[2] = 0;
1126  char *res = stpcpy(y, x);  // NOLINT
1127  ASSERT_EQ(res, y + 2);
1128  EXPECT_NOT_POISONED(y[0]);
1129  EXPECT_POISONED(y[1]);
1130  EXPECT_NOT_POISONED(y[2]);
1131}
1132
1133TEST(MemorySanitizer, strtol) {
1134  char *e;
1135  assert(1 == strtol("1", &e, 10));
1136  EXPECT_NOT_POISONED((S8) e);
1137}
1138
1139TEST(MemorySanitizer, strtoll) {
1140  char *e;
1141  assert(1 == strtoll("1", &e, 10));
1142  EXPECT_NOT_POISONED((S8) e);
1143}
1144
1145TEST(MemorySanitizer, strtoul) {
1146  char *e;
1147  assert(1 == strtoul("1", &e, 10));
1148  EXPECT_NOT_POISONED((S8) e);
1149}
1150
1151TEST(MemorySanitizer, strtoull) {
1152  char *e;
1153  assert(1 == strtoull("1", &e, 10));
1154  EXPECT_NOT_POISONED((S8) e);
1155}
1156
1157TEST(MemorySanitizer, strtoimax) {
1158  char *e;
1159  assert(1 == strtoimax("1", &e, 10));
1160  EXPECT_NOT_POISONED((S8) e);
1161}
1162
1163TEST(MemorySanitizer, strtoumax) {
1164  char *e;
1165  assert(1 == strtoumax("1", &e, 10));
1166  EXPECT_NOT_POISONED((S8) e);
1167}
1168
1169TEST(MemorySanitizer, strtod) {
1170  char *e;
1171  assert(0 != strtod("1.5", &e));
1172  EXPECT_NOT_POISONED((S8) e);
1173}
1174
1175TEST(MemorySanitizer, strtof) {
1176  char *e;
1177  assert(0 != strtof("1.5", &e));
1178  EXPECT_NOT_POISONED((S8) e);
1179}
1180
1181TEST(MemorySanitizer, strtold) {
1182  char *e;
1183  assert(0 != strtold("1.5", &e));
1184  EXPECT_NOT_POISONED((S8) e);
1185}
1186
1187TEST(MemorySanitizer, modf) {
1188  double x, y;
1189  x = modf(2.1, &y);
1190  EXPECT_NOT_POISONED(y);
1191}
1192
1193TEST(MemorySanitizer, modff) {
1194  float x, y;
1195  x = modff(2.1, &y);
1196  EXPECT_NOT_POISONED(y);
1197}
1198
1199TEST(MemorySanitizer, modfl) {
1200  long double x, y;
1201  x = modfl(2.1, &y);
1202  EXPECT_NOT_POISONED(y);
1203}
1204
1205TEST(MemorySanitizer, sprintf) {  // NOLINT
1206  char buff[10];
1207  break_optimization(buff);
1208  EXPECT_POISONED(buff[0]);
1209  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1210  assert(res == 7);
1211  assert(buff[0] == '1');
1212  assert(buff[1] == '2');
1213  assert(buff[2] == '3');
1214  assert(buff[6] == '7');
1215  assert(buff[7] == 0);
1216  EXPECT_POISONED(buff[8]);
1217}
1218
1219TEST(MemorySanitizer, snprintf) {
1220  char buff[10];
1221  break_optimization(buff);
1222  EXPECT_POISONED(buff[0]);
1223  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1224  assert(res == 7);
1225  assert(buff[0] == '1');
1226  assert(buff[1] == '2');
1227  assert(buff[2] == '3');
1228  assert(buff[6] == '7');
1229  assert(buff[7] == 0);
1230  EXPECT_POISONED(buff[8]);
1231}
1232
1233TEST(MemorySanitizer, swprintf) {
1234  wchar_t buff[10];
1235  assert(sizeof(wchar_t) == 4);
1236  break_optimization(buff);
1237  EXPECT_POISONED(buff[0]);
1238  int res = swprintf(buff, 9, L"%d", 1234567);
1239  assert(res == 7);
1240  assert(buff[0] == '1');
1241  assert(buff[1] == '2');
1242  assert(buff[2] == '3');
1243  assert(buff[6] == '7');
1244  assert(buff[7] == 0);
1245  EXPECT_POISONED(buff[8]);
1246}
1247
1248TEST(MemorySanitizer, asprintf) {  // NOLINT
1249  char *pbuf;
1250  EXPECT_POISONED(pbuf);
1251  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1252  assert(res == 7);
1253  EXPECT_NOT_POISONED(pbuf);
1254  assert(pbuf[0] == '1');
1255  assert(pbuf[1] == '2');
1256  assert(pbuf[2] == '3');
1257  assert(pbuf[6] == '7');
1258  assert(pbuf[7] == 0);
1259  free(pbuf);
1260}
1261
1262TEST(MemorySanitizer, mbstowcs) {
1263  const char *x = "abc";
1264  wchar_t buff[10];
1265  int res = mbstowcs(buff, x, 2);
1266  EXPECT_EQ(2, res);
1267  EXPECT_EQ(L'a', buff[0]);
1268  EXPECT_EQ(L'b', buff[1]);
1269  EXPECT_POISONED(buff[2]);
1270  res = mbstowcs(buff, x, 10);
1271  EXPECT_EQ(3, res);
1272  EXPECT_NOT_POISONED(buff[3]);
1273}
1274
1275TEST(MemorySanitizer, wcstombs) {
1276  const wchar_t *x = L"abc";
1277  char buff[10];
1278  int res = wcstombs(buff, x, 4);
1279  EXPECT_EQ(res, 3);
1280  EXPECT_EQ(buff[0], 'a');
1281  EXPECT_EQ(buff[1], 'b');
1282  EXPECT_EQ(buff[2], 'c');
1283}
1284
1285TEST(MemorySanitizer, wcsrtombs) {
1286  const wchar_t *x = L"abc";
1287  const wchar_t *p = x;
1288  char buff[10];
1289  mbstate_t mbs;
1290  memset(&mbs, 0, sizeof(mbs));
1291  int res = wcsrtombs(buff, &p, 4, &mbs);
1292  EXPECT_EQ(res, 3);
1293  EXPECT_EQ(buff[0], 'a');
1294  EXPECT_EQ(buff[1], 'b');
1295  EXPECT_EQ(buff[2], 'c');
1296  EXPECT_EQ(buff[3], '\0');
1297  EXPECT_POISONED(buff[4]);
1298}
1299
1300TEST(MemorySanitizer, wcsnrtombs) {
1301  const wchar_t *x = L"abc";
1302  const wchar_t *p = x;
1303  char buff[10];
1304  mbstate_t mbs;
1305  memset(&mbs, 0, sizeof(mbs));
1306  int res = wcsnrtombs(buff, &p, 2, 4, &mbs);
1307  EXPECT_EQ(res, 2);
1308  EXPECT_EQ(buff[0], 'a');
1309  EXPECT_EQ(buff[1], 'b');
1310  EXPECT_POISONED(buff[2]);
1311}
1312
1313TEST(MemorySanitizer, mbtowc) {
1314  const char *x = "abc";
1315  wchar_t wx;
1316  int res = mbtowc(&wx, x, 3);
1317  EXPECT_GT(res, 0);
1318  EXPECT_NOT_POISONED(wx);
1319}
1320
1321TEST(MemorySanitizer, mbrtowc) {
1322  const char *x = "abc";
1323  wchar_t wx;
1324  mbstate_t mbs;
1325  memset(&mbs, 0, sizeof(mbs));
1326  int res = mbrtowc(&wx, x, 3, &mbs);
1327  EXPECT_GT(res, 0);
1328  EXPECT_NOT_POISONED(wx);
1329}
1330
1331TEST(MemorySanitizer, gettimeofday) {
1332  struct timeval tv;
1333  struct timezone tz;
1334  break_optimization(&tv);
1335  break_optimization(&tz);
1336  assert(sizeof(tv) == 16);
1337  assert(sizeof(tz) == 8);
1338  EXPECT_POISONED(tv.tv_sec);
1339  EXPECT_POISONED(tv.tv_usec);
1340  EXPECT_POISONED(tz.tz_minuteswest);
1341  EXPECT_POISONED(tz.tz_dsttime);
1342  assert(0 == gettimeofday(&tv, &tz));
1343  EXPECT_NOT_POISONED(tv.tv_sec);
1344  EXPECT_NOT_POISONED(tv.tv_usec);
1345  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1346  EXPECT_NOT_POISONED(tz.tz_dsttime);
1347}
1348
1349TEST(MemorySanitizer, clock_gettime) {
1350  struct timespec tp;
1351  EXPECT_POISONED(tp.tv_sec);
1352  EXPECT_POISONED(tp.tv_nsec);
1353  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1354  EXPECT_NOT_POISONED(tp.tv_sec);
1355  EXPECT_NOT_POISONED(tp.tv_nsec);
1356}
1357
1358TEST(MemorySanitizer, clock_getres) {
1359  struct timespec tp;
1360  EXPECT_POISONED(tp.tv_sec);
1361  EXPECT_POISONED(tp.tv_nsec);
1362  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1363  EXPECT_POISONED(tp.tv_sec);
1364  EXPECT_POISONED(tp.tv_nsec);
1365  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1366  EXPECT_NOT_POISONED(tp.tv_sec);
1367  EXPECT_NOT_POISONED(tp.tv_nsec);
1368}
1369
1370TEST(MemorySanitizer, getitimer) {
1371  struct itimerval it1, it2;
1372  int res;
1373  EXPECT_POISONED(it1.it_interval.tv_sec);
1374  EXPECT_POISONED(it1.it_interval.tv_usec);
1375  EXPECT_POISONED(it1.it_value.tv_sec);
1376  EXPECT_POISONED(it1.it_value.tv_usec);
1377  res = getitimer(ITIMER_VIRTUAL, &it1);
1378  assert(!res);
1379  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1380  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1381  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1382  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1383
1384  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1385  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1386
1387  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1388  assert(!res);
1389  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1390  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1391  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1392  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1393
1394  // Check that old_value can be 0, and disable the timer.
1395  memset(&it1, 0, sizeof(it1));
1396  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1397  assert(!res);
1398}
1399
1400TEST(MemorySanitizer, time) {
1401  time_t t;
1402  EXPECT_POISONED(t);
1403  time_t t2 = time(&t);
1404  assert(t2 != (time_t)-1);
1405  EXPECT_NOT_POISONED(t);
1406}
1407
1408TEST(MemorySanitizer, localtime) {
1409  time_t t = 123;
1410  struct tm *time = localtime(&t);
1411  assert(time != 0);
1412  EXPECT_NOT_POISONED(time->tm_sec);
1413  EXPECT_NOT_POISONED(time->tm_hour);
1414  EXPECT_NOT_POISONED(time->tm_year);
1415  EXPECT_NOT_POISONED(time->tm_isdst);
1416}
1417
1418TEST(MemorySanitizer, localtime_r) {
1419  time_t t = 123;
1420  struct tm time;
1421  struct tm *res = localtime_r(&t, &time);
1422  assert(res != 0);
1423  EXPECT_NOT_POISONED(time.tm_sec);
1424  EXPECT_NOT_POISONED(time.tm_hour);
1425  EXPECT_NOT_POISONED(time.tm_year);
1426  EXPECT_NOT_POISONED(time.tm_isdst);
1427}
1428
1429TEST(MemorySanitizer, mmap) {
1430  const int size = 4096;
1431  void *p1, *p2;
1432  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1433  __msan_poison(p1, size);
1434  munmap(p1, size);
1435  for (int i = 0; i < 1000; i++) {
1436    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1437    if (p2 == p1)
1438      break;
1439    else
1440      munmap(p2, size);
1441  }
1442  if (p1 == p2) {
1443    EXPECT_NOT_POISONED(*(char*)p2);
1444    munmap(p2, size);
1445  }
1446}
1447
1448// FIXME: enable and add ecvt.
1449// FIXME: check why msandr does nt handle fcvt.
1450TEST(MemorySanitizer, fcvt) {
1451  int a, b;
1452  break_optimization(&a);
1453  break_optimization(&b);
1454  EXPECT_POISONED(a);
1455  EXPECT_POISONED(b);
1456  char *str = fcvt(12345.6789, 10, &a, &b);
1457  EXPECT_NOT_POISONED(a);
1458  EXPECT_NOT_POISONED(b);
1459}
1460
1461TEST(MemorySanitizer, frexp) {
1462  int x;
1463  x = *GetPoisoned<int>();
1464  double r = frexp(1.1, &x);
1465  EXPECT_NOT_POISONED(r);
1466  EXPECT_NOT_POISONED(x);
1467
1468  x = *GetPoisoned<int>();
1469  float rf = frexpf(1.1, &x);
1470  EXPECT_NOT_POISONED(rf);
1471  EXPECT_NOT_POISONED(x);
1472
1473  x = *GetPoisoned<int>();
1474  double rl = frexpl(1.1, &x);
1475  EXPECT_NOT_POISONED(rl);
1476  EXPECT_NOT_POISONED(x);
1477}
1478
1479namespace {
1480
1481static int cnt;
1482
1483void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1484  assert(signo == SIGPROF);
1485  assert(si);
1486  EXPECT_NOT_POISONED(si->si_errno);
1487  EXPECT_NOT_POISONED(si->si_pid);
1488#if __linux__
1489# if defined(__x86_64__)
1490  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1491# elif defined(__i386__)
1492  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1493# endif
1494#endif
1495  ++cnt;
1496}
1497
1498TEST(MemorySanitizer, sigaction) {
1499  struct sigaction act = {};
1500  struct sigaction oldact = {};
1501  struct sigaction origact = {};
1502
1503  sigaction(SIGPROF, 0, &origact);
1504
1505  act.sa_flags |= SA_SIGINFO;
1506  act.sa_sigaction = &SigactionHandler;
1507  sigaction(SIGPROF, &act, 0);
1508
1509  kill(getpid(), SIGPROF);
1510
1511  act.sa_flags &= ~SA_SIGINFO;
1512  act.sa_handler = SIG_DFL;
1513  sigaction(SIGPROF, &act, 0);
1514
1515  act.sa_flags &= ~SA_SIGINFO;
1516  act.sa_handler = SIG_IGN;
1517  sigaction(SIGPROF, &act, &oldact);
1518  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1519  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1520  kill(getpid(), SIGPROF);
1521
1522  act.sa_flags |= SA_SIGINFO;
1523  act.sa_sigaction = &SigactionHandler;
1524  sigaction(SIGPROF, &act, &oldact);
1525  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1526  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1527  kill(getpid(), SIGPROF);
1528
1529  act.sa_flags &= ~SA_SIGINFO;
1530  act.sa_handler = SIG_DFL;
1531  sigaction(SIGPROF, &act, &oldact);
1532  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1533  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1534  EXPECT_EQ(2, cnt);
1535
1536  sigaction(SIGPROF, &origact, 0);
1537}
1538
1539} // namespace
1540
1541struct StructWithDtor {
1542  ~StructWithDtor();
1543};
1544
1545NOINLINE StructWithDtor::~StructWithDtor() {
1546  break_optimization(0);
1547}
1548
1549TEST(MemorySanitizer, Invoke) {
1550  StructWithDtor s;  // Will cause the calls to become invokes.
1551  EXPECT_NOT_POISONED(0);
1552  EXPECT_POISONED(*GetPoisoned<int>());
1553  EXPECT_NOT_POISONED(0);
1554  EXPECT_POISONED(*GetPoisoned<int>());
1555  EXPECT_POISONED(ReturnPoisoned<S4>());
1556}
1557
1558TEST(MemorySanitizer, ptrtoint) {
1559  // Test that shadow is propagated through pointer-to-integer conversion.
1560  void* p = (void*)0xABCD;
1561  __msan_poison(((char*)&p) + 1, sizeof(p));
1562  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1563
1564  void* q = (void*)0xABCD;
1565  __msan_poison(&q, sizeof(q) - 1);
1566  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1567}
1568
1569static void vaargsfn2(int guard, ...) {
1570  va_list vl;
1571  va_start(vl, guard);
1572  EXPECT_NOT_POISONED(va_arg(vl, int));
1573  EXPECT_NOT_POISONED(va_arg(vl, int));
1574  EXPECT_NOT_POISONED(va_arg(vl, int));
1575  EXPECT_POISONED(va_arg(vl, double));
1576  va_end(vl);
1577}
1578
1579static void vaargsfn(int guard, ...) {
1580  va_list vl;
1581  va_start(vl, guard);
1582  EXPECT_NOT_POISONED(va_arg(vl, int));
1583  EXPECT_POISONED(va_arg(vl, int));
1584  // The following call will overwrite __msan_param_tls.
1585  // Checks after it test that arg shadow was somehow saved across the call.
1586  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1587  EXPECT_NOT_POISONED(va_arg(vl, int));
1588  EXPECT_POISONED(va_arg(vl, int));
1589  va_end(vl);
1590}
1591
1592TEST(MemorySanitizer, VAArgTest) {
1593  int* x = GetPoisoned<int>();
1594  int* y = GetPoisoned<int>(4);
1595  vaargsfn(1, 13, *x, 42, *y);
1596}
1597
1598static void vaargsfn_many(int guard, ...) {
1599  va_list vl;
1600  va_start(vl, guard);
1601  EXPECT_NOT_POISONED(va_arg(vl, int));
1602  EXPECT_POISONED(va_arg(vl, int));
1603  EXPECT_NOT_POISONED(va_arg(vl, int));
1604  EXPECT_NOT_POISONED(va_arg(vl, int));
1605  EXPECT_NOT_POISONED(va_arg(vl, int));
1606  EXPECT_NOT_POISONED(va_arg(vl, int));
1607  EXPECT_NOT_POISONED(va_arg(vl, int));
1608  EXPECT_NOT_POISONED(va_arg(vl, int));
1609  EXPECT_NOT_POISONED(va_arg(vl, int));
1610  EXPECT_POISONED(va_arg(vl, int));
1611  va_end(vl);
1612}
1613
1614TEST(MemorySanitizer, VAArgManyTest) {
1615  int* x = GetPoisoned<int>();
1616  int* y = GetPoisoned<int>(4);
1617  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1618}
1619
1620static void vaargsfn_pass2(va_list vl) {
1621  EXPECT_NOT_POISONED(va_arg(vl, int));
1622  EXPECT_NOT_POISONED(va_arg(vl, int));
1623  EXPECT_POISONED(va_arg(vl, int));
1624}
1625
1626static void vaargsfn_pass(int guard, ...) {
1627  va_list vl;
1628  va_start(vl, guard);
1629  EXPECT_POISONED(va_arg(vl, int));
1630  vaargsfn_pass2(vl);
1631  va_end(vl);
1632}
1633
1634TEST(MemorySanitizer, VAArgPass) {
1635  int* x = GetPoisoned<int>();
1636  int* y = GetPoisoned<int>(4);
1637  vaargsfn_pass(1, *x, 2, 3, *y);
1638}
1639
1640static void vaargsfn_copy2(va_list vl) {
1641  EXPECT_NOT_POISONED(va_arg(vl, int));
1642  EXPECT_POISONED(va_arg(vl, int));
1643}
1644
1645static void vaargsfn_copy(int guard, ...) {
1646  va_list vl;
1647  va_start(vl, guard);
1648  EXPECT_NOT_POISONED(va_arg(vl, int));
1649  EXPECT_POISONED(va_arg(vl, int));
1650  va_list vl2;
1651  va_copy(vl2, vl);
1652  vaargsfn_copy2(vl2);
1653  EXPECT_NOT_POISONED(va_arg(vl, int));
1654  EXPECT_POISONED(va_arg(vl, int));
1655  va_end(vl);
1656}
1657
1658TEST(MemorySanitizer, VAArgCopy) {
1659  int* x = GetPoisoned<int>();
1660  int* y = GetPoisoned<int>(4);
1661  vaargsfn_copy(1, 2, *x, 3, *y);
1662}
1663
1664static void vaargsfn_ptr(int guard, ...) {
1665  va_list vl;
1666  va_start(vl, guard);
1667  EXPECT_NOT_POISONED(va_arg(vl, int*));
1668  EXPECT_POISONED(va_arg(vl, int*));
1669  EXPECT_NOT_POISONED(va_arg(vl, int*));
1670  EXPECT_POISONED(va_arg(vl, double*));
1671  va_end(vl);
1672}
1673
1674TEST(MemorySanitizer, VAArgPtr) {
1675  int** x = GetPoisoned<int*>();
1676  double** y = GetPoisoned<double*>(8);
1677  int z;
1678  vaargsfn_ptr(1, &z, *x, &z, *y);
1679}
1680
1681static void vaargsfn_overflow(int guard, ...) {
1682  va_list vl;
1683  va_start(vl, guard);
1684  EXPECT_NOT_POISONED(va_arg(vl, int));
1685  EXPECT_NOT_POISONED(va_arg(vl, int));
1686  EXPECT_POISONED(va_arg(vl, int));
1687  EXPECT_NOT_POISONED(va_arg(vl, int));
1688  EXPECT_NOT_POISONED(va_arg(vl, int));
1689  EXPECT_NOT_POISONED(va_arg(vl, int));
1690
1691  EXPECT_NOT_POISONED(va_arg(vl, double));
1692  EXPECT_NOT_POISONED(va_arg(vl, double));
1693  EXPECT_NOT_POISONED(va_arg(vl, double));
1694  EXPECT_POISONED(va_arg(vl, double));
1695  EXPECT_NOT_POISONED(va_arg(vl, double));
1696  EXPECT_POISONED(va_arg(vl, int*));
1697  EXPECT_NOT_POISONED(va_arg(vl, double));
1698  EXPECT_NOT_POISONED(va_arg(vl, double));
1699
1700  EXPECT_POISONED(va_arg(vl, int));
1701  EXPECT_POISONED(va_arg(vl, double));
1702  EXPECT_POISONED(va_arg(vl, int*));
1703
1704  EXPECT_NOT_POISONED(va_arg(vl, int));
1705  EXPECT_NOT_POISONED(va_arg(vl, double));
1706  EXPECT_NOT_POISONED(va_arg(vl, int*));
1707
1708  EXPECT_POISONED(va_arg(vl, int));
1709  EXPECT_POISONED(va_arg(vl, double));
1710  EXPECT_POISONED(va_arg(vl, int*));
1711
1712  va_end(vl);
1713}
1714
1715TEST(MemorySanitizer, VAArgOverflow) {
1716  int* x = GetPoisoned<int>();
1717  double* y = GetPoisoned<double>(8);
1718  int** p = GetPoisoned<int*>(16);
1719  int z;
1720  vaargsfn_overflow(1,
1721      1, 2, *x, 4, 5, 6,
1722      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1723      // the following args will overflow for sure
1724      *x, *y, *p,
1725      7, 9.9, &z,
1726      *x, *y, *p);
1727}
1728
1729static void vaargsfn_tlsoverwrite2(int guard, ...) {
1730  va_list vl;
1731  va_start(vl, guard);
1732  EXPECT_NOT_POISONED(va_arg(vl, int));
1733  va_end(vl);
1734}
1735
1736static void vaargsfn_tlsoverwrite(int guard, ...) {
1737  // This call will overwrite TLS contents unless it's backed up somewhere.
1738  vaargsfn_tlsoverwrite2(2, 42);
1739  va_list vl;
1740  va_start(vl, guard);
1741  EXPECT_POISONED(va_arg(vl, int));
1742  va_end(vl);
1743}
1744
1745TEST(MemorySanitizer, VAArgTLSOverwrite) {
1746  int* x = GetPoisoned<int>();
1747  vaargsfn_tlsoverwrite(1, *x);
1748}
1749
1750struct StructByVal {
1751  int a, b, c, d, e, f;
1752};
1753
1754NOINLINE void StructByValTestFunc(struct StructByVal s) {
1755  EXPECT_NOT_POISONED(s.a);
1756  EXPECT_POISONED(s.b);
1757  EXPECT_NOT_POISONED(s.c);
1758  EXPECT_POISONED(s.d);
1759  EXPECT_NOT_POISONED(s.e);
1760  EXPECT_POISONED(s.f);
1761}
1762
1763NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1764  StructByValTestFunc(s);
1765}
1766
1767NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1768  StructByValTestFunc(s);
1769}
1770
1771TEST(MemorySanitizer, StructByVal) {
1772  // Large aggregates are passed as "byval" pointer argument in LLVM.
1773  struct StructByVal s;
1774  s.a = 1;
1775  s.b = *GetPoisoned<int>();
1776  s.c = 2;
1777  s.d = *GetPoisoned<int>();
1778  s.e = 3;
1779  s.f = *GetPoisoned<int>();
1780  StructByValTestFunc(s);
1781  StructByValTestFunc1(s);
1782  StructByValTestFunc2(0, s);
1783}
1784
1785
1786#if MSAN_HAS_M128
1787NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1788NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1789TEST(MemorySanitizer, m128) {
1790  __m128i a = _mm_set1_epi16(0x1234);
1791  __m128i b = _mm_set1_epi16(0x7890);
1792  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1793  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1794}
1795// FIXME: add more tests for __m128i.
1796#endif  // MSAN_HAS_M128
1797
1798// We should not complain when copying this poisoned hole.
1799struct StructWithHole {
1800  U4  a;
1801  // 4-byte hole.
1802  U8  b;
1803};
1804
1805NOINLINE StructWithHole ReturnStructWithHole() {
1806  StructWithHole res;
1807  __msan_poison(&res, sizeof(res));
1808  res.a = 1;
1809  res.b = 2;
1810  return res;
1811}
1812
1813TEST(MemorySanitizer, StructWithHole) {
1814  StructWithHole a = ReturnStructWithHole();
1815  break_optimization(&a);
1816}
1817
1818template <class T>
1819NOINLINE T ReturnStruct() {
1820  T res;
1821  __msan_poison(&res, sizeof(res));
1822  res.a = 1;
1823  return res;
1824}
1825
1826template <class T>
1827NOINLINE void TestReturnStruct() {
1828  T s1 = ReturnStruct<T>();
1829  EXPECT_NOT_POISONED(s1.a);
1830  EXPECT_POISONED(s1.b);
1831}
1832
1833struct SSS1 {
1834  int a, b, c;
1835};
1836struct SSS2 {
1837  int b, a, c;
1838};
1839struct SSS3 {
1840  int b, c, a;
1841};
1842struct SSS4 {
1843  int c, b, a;
1844};
1845
1846struct SSS5 {
1847  int a;
1848  float b;
1849};
1850struct SSS6 {
1851  int a;
1852  double b;
1853};
1854struct SSS7 {
1855  S8 b;
1856  int a;
1857};
1858struct SSS8 {
1859  S2 b;
1860  S8 a;
1861};
1862
1863TEST(MemorySanitizer, IntStruct3) {
1864  TestReturnStruct<SSS1>();
1865  TestReturnStruct<SSS2>();
1866  TestReturnStruct<SSS3>();
1867  TestReturnStruct<SSS4>();
1868  TestReturnStruct<SSS5>();
1869  TestReturnStruct<SSS6>();
1870  TestReturnStruct<SSS7>();
1871  TestReturnStruct<SSS8>();
1872}
1873
1874struct LongStruct {
1875  U1 a1, b1;
1876  U2 a2, b2;
1877  U4 a4, b4;
1878  U8 a8, b8;
1879};
1880
1881NOINLINE LongStruct ReturnLongStruct1() {
1882  LongStruct res;
1883  __msan_poison(&res, sizeof(res));
1884  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1885  // leaves b1, .., b8 poisoned.
1886  return res;
1887}
1888
1889NOINLINE LongStruct ReturnLongStruct2() {
1890  LongStruct res;
1891  __msan_poison(&res, sizeof(res));
1892  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1893  // leaves a1, .., a8 poisoned.
1894  return res;
1895}
1896
1897TEST(MemorySanitizer, LongStruct) {
1898  LongStruct s1 = ReturnLongStruct1();
1899  __msan_print_shadow(&s1, sizeof(s1));
1900  EXPECT_NOT_POISONED(s1.a1);
1901  EXPECT_NOT_POISONED(s1.a2);
1902  EXPECT_NOT_POISONED(s1.a4);
1903  EXPECT_NOT_POISONED(s1.a8);
1904
1905  EXPECT_POISONED(s1.b1);
1906  EXPECT_POISONED(s1.b2);
1907  EXPECT_POISONED(s1.b4);
1908  EXPECT_POISONED(s1.b8);
1909
1910  LongStruct s2 = ReturnLongStruct2();
1911  __msan_print_shadow(&s2, sizeof(s2));
1912  EXPECT_NOT_POISONED(s2.b1);
1913  EXPECT_NOT_POISONED(s2.b2);
1914  EXPECT_NOT_POISONED(s2.b4);
1915  EXPECT_NOT_POISONED(s2.b8);
1916
1917  EXPECT_POISONED(s2.a1);
1918  EXPECT_POISONED(s2.a2);
1919  EXPECT_POISONED(s2.a4);
1920  EXPECT_POISONED(s2.a8);
1921}
1922
1923TEST(MemorySanitizer, getrlimit) {
1924  struct rlimit limit;
1925  __msan_poison(&limit, sizeof(limit));
1926  int result = getrlimit(RLIMIT_DATA, &limit);
1927  assert(result == 0);
1928  EXPECT_NOT_POISONED(limit.rlim_cur);
1929  EXPECT_NOT_POISONED(limit.rlim_max);
1930}
1931
1932TEST(MemorySanitizer, getrusage) {
1933  struct rusage usage;
1934  __msan_poison(&usage, sizeof(usage));
1935  int result = getrusage(RUSAGE_SELF, &usage);
1936  assert(result == 0);
1937  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
1938  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
1939  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
1940  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
1941  EXPECT_NOT_POISONED(usage.ru_maxrss);
1942  EXPECT_NOT_POISONED(usage.ru_minflt);
1943  EXPECT_NOT_POISONED(usage.ru_majflt);
1944  EXPECT_NOT_POISONED(usage.ru_inblock);
1945  EXPECT_NOT_POISONED(usage.ru_oublock);
1946  EXPECT_NOT_POISONED(usage.ru_nvcsw);
1947  EXPECT_NOT_POISONED(usage.ru_nivcsw);
1948}
1949
1950#ifdef __GLIBC__
1951extern char *program_invocation_name;
1952#else  // __GLIBC__
1953# error "TODO: port this"
1954#endif
1955
1956static void dladdr_testfn() {}
1957
1958TEST(MemorySanitizer, dladdr) {
1959  Dl_info info;
1960  __msan_poison(&info, sizeof(info));
1961  int result = dladdr((const void*)dladdr_testfn, &info);
1962  assert(result != 0);
1963  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
1964  if (info.dli_fname)
1965    EXPECT_NOT_POISONED(strlen(info.dli_fname));
1966  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
1967  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
1968  if (info.dli_sname)
1969    EXPECT_NOT_POISONED(strlen(info.dli_sname));
1970  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
1971}
1972
1973#ifndef MSAN_TEST_DISABLE_DLOPEN
1974
1975static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
1976  (*(int *)data)++;
1977  EXPECT_NOT_POISONED(info->dlpi_addr);
1978  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
1979  EXPECT_NOT_POISONED(info->dlpi_phnum);
1980  for (int i = 0; i < info->dlpi_phnum; ++i)
1981    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
1982  return 0;
1983}
1984
1985// Compute the path to our loadable DSO.  We assume it's in the same
1986// directory.  Only use string routines that we intercept so far to do this.
1987static int PathToLoadable(char *buf, size_t sz) {
1988  const char *basename = "libmsan_loadable.x86_64.so";
1989  char *argv0 = program_invocation_name;
1990  char *last_slash = strrchr(argv0, '/');
1991  assert(last_slash);
1992  int res =
1993      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
1994  return res < sz ? 0 : res;
1995}
1996
1997TEST(MemorySanitizer, dl_iterate_phdr) {
1998  char path[4096];
1999  int res = PathToLoadable(path, sizeof(path));
2000  assert(!res);
2001
2002  // Having at least one dlopen'ed library in the process makes this more
2003  // entertaining.
2004  void *lib = dlopen(path, RTLD_LAZY);
2005  ASSERT_NE((void*)0, lib);
2006
2007  int count = 0;
2008  int result = dl_iterate_phdr(dl_phdr_callback, &count);
2009  assert(count > 0);
2010
2011  dlclose(lib);
2012}
2013
2014
2015TEST(MemorySanitizer, dlopen) {
2016  char path[4096];
2017  int res = PathToLoadable(path, sizeof(path));
2018  assert(!res);
2019
2020  // We need to clear shadow for globals when doing dlopen.  In order to test
2021  // this, we have to poison the shadow for the DSO before we load it.  In
2022  // general this is difficult, but the loader tends to reload things in the
2023  // same place, so we open, close, and then reopen.  The global should always
2024  // start out clean after dlopen.
2025  for (int i = 0; i < 2; i++) {
2026    void *lib = dlopen(path, RTLD_LAZY);
2027    if (lib == NULL) {
2028      printf("dlerror: %s\n", dlerror());
2029      assert(lib != NULL);
2030    }
2031    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
2032    assert(get_dso_global);
2033    void **dso_global = get_dso_global();
2034    EXPECT_NOT_POISONED(*dso_global);
2035    __msan_poison(dso_global, sizeof(*dso_global));
2036    EXPECT_POISONED(*dso_global);
2037    dlclose(lib);
2038  }
2039}
2040
2041// Regression test for a crash in dlopen() interceptor.
2042TEST(MemorySanitizer, dlopenFailed) {
2043  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
2044  void *lib = dlopen(path, RTLD_LAZY);
2045  ASSERT_EQ(0, lib);
2046}
2047
2048#endif // MSAN_TEST_DISABLE_DLOPEN
2049
2050TEST(MemorySanitizer, scanf) {
2051  const char *input = "42 hello";
2052  int* d = new int;
2053  char* s = new char[7];
2054  int res = sscanf(input, "%d %5s", d, s);
2055  printf("res %d\n", res);
2056  assert(res == 2);
2057  EXPECT_NOT_POISONED(*d);
2058  EXPECT_NOT_POISONED(s[0]);
2059  EXPECT_NOT_POISONED(s[1]);
2060  EXPECT_NOT_POISONED(s[2]);
2061  EXPECT_NOT_POISONED(s[3]);
2062  EXPECT_NOT_POISONED(s[4]);
2063  EXPECT_NOT_POISONED(s[5]);
2064  EXPECT_POISONED(s[6]);
2065  delete s;
2066  delete d;
2067}
2068
2069static void *SimpleThread_threadfn(void* data) {
2070  return new int;
2071}
2072
2073TEST(MemorySanitizer, SimpleThread) {
2074  pthread_t t;
2075  void *p;
2076  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
2077  assert(!res);
2078  EXPECT_NOT_POISONED(t);
2079  res = pthread_join(t, &p);
2080  assert(!res);
2081  EXPECT_NOT_POISONED(p);
2082  delete (int*)p;
2083}
2084
2085static void *SmallStackThread_threadfn(void* data) {
2086  return 0;
2087}
2088
2089TEST(MemorySanitizer, SmallStackThread) {
2090  pthread_attr_t attr;
2091  pthread_t t;
2092  void *p;
2093  int res;
2094  res = pthread_attr_init(&attr);
2095  ASSERT_EQ(0, res);
2096  res = pthread_attr_setstacksize(&attr, 64 * 1024);
2097  ASSERT_EQ(0, res);
2098  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2099  ASSERT_EQ(0, res);
2100  res = pthread_join(t, &p);
2101  ASSERT_EQ(0, res);
2102  res = pthread_attr_destroy(&attr);
2103  ASSERT_EQ(0, res);
2104}
2105
2106TEST(MemorySanitizer, PreAllocatedStackThread) {
2107  pthread_attr_t attr;
2108  pthread_t t;
2109  int res;
2110  res = pthread_attr_init(&attr);
2111  ASSERT_EQ(0, res);
2112  void *stack;
2113  const size_t kStackSize = 64 * 1024;
2114  res = posix_memalign(&stack, 4096, kStackSize);
2115  ASSERT_EQ(0, res);
2116  res = pthread_attr_setstack(&attr, stack, kStackSize);
2117  ASSERT_EQ(0, res);
2118  // A small self-allocated stack can not be extended by the tool.
2119  // In this case pthread_create is expected to fail.
2120  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2121  EXPECT_NE(0, res);
2122  res = pthread_attr_destroy(&attr);
2123  ASSERT_EQ(0, res);
2124}
2125
2126TEST(MemorySanitizer, pthread_getschedparam) {
2127  int policy;
2128  struct sched_param param;
2129  int res = pthread_getschedparam(pthread_self(), &policy, &param);
2130  ASSERT_EQ(0, res);
2131  EXPECT_NOT_POISONED(policy);
2132  EXPECT_NOT_POISONED(param.sched_priority);
2133}
2134
2135TEST(MemorySanitizer, pthread_key_create) {
2136  pthread_key_t key;
2137  int res = pthread_key_create(&key, NULL);
2138  assert(!res);
2139  EXPECT_NOT_POISONED(key);
2140  res = pthread_key_delete(key);
2141  assert(!res);
2142}
2143
2144TEST(MemorySanitizer, posix_memalign) {
2145  void *p;
2146  EXPECT_POISONED(p);
2147  int res = posix_memalign(&p, 4096, 13);
2148  ASSERT_EQ(0, res);
2149  EXPECT_NOT_POISONED(p);
2150  free(p);
2151}
2152
2153TEST(MemorySanitizer, inet_pton) {
2154  const char *s = "1:0:0:0:0:0:0:8";
2155  unsigned char buf[sizeof(struct in6_addr)];
2156  int res = inet_pton(AF_INET6, s, buf);
2157  ASSERT_EQ(1, res);
2158  EXPECT_NOT_POISONED(buf[0]);
2159  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
2160
2161  char s_out[INET6_ADDRSTRLEN];
2162  EXPECT_POISONED(s_out[3]);
2163  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
2164  ASSERT_NE((void*)0, q);
2165  EXPECT_NOT_POISONED(s_out[3]);
2166}
2167
2168TEST(MemorySanitizer, inet_aton) {
2169  const char *s = "127.0.0.1";
2170  struct in_addr in[2];
2171  int res = inet_aton(s, in);
2172  ASSERT_NE(0, res);
2173  EXPECT_NOT_POISONED(in[0]);
2174  EXPECT_POISONED(*(char *)(in + 1));
2175}
2176
2177TEST(MemorySanitizer, uname) {
2178  struct utsname u;
2179  int res = uname(&u);
2180  assert(!res);
2181  EXPECT_NOT_POISONED(strlen(u.sysname));
2182  EXPECT_NOT_POISONED(strlen(u.nodename));
2183  EXPECT_NOT_POISONED(strlen(u.release));
2184  EXPECT_NOT_POISONED(strlen(u.version));
2185  EXPECT_NOT_POISONED(strlen(u.machine));
2186}
2187
2188TEST(MemorySanitizer, gethostname) {
2189  char buf[100];
2190  int res = gethostname(buf, 100);
2191  assert(!res);
2192  EXPECT_NOT_POISONED(strlen(buf));
2193}
2194
2195TEST(MemorySanitizer, sysinfo) {
2196  struct sysinfo info;
2197  int res = sysinfo(&info);
2198  assert(!res);
2199  EXPECT_NOT_POISONED(info);
2200}
2201
2202TEST(MemorySanitizer, getpwuid) {
2203  struct passwd *p = getpwuid(0); // root
2204  assert(p);
2205  EXPECT_NOT_POISONED(p->pw_name);
2206  assert(p->pw_name);
2207  EXPECT_NOT_POISONED(p->pw_name[0]);
2208  EXPECT_NOT_POISONED(p->pw_uid);
2209  assert(p->pw_uid == 0);
2210}
2211
2212TEST(MemorySanitizer, getpwnam_r) {
2213  struct passwd pwd;
2214  struct passwd *pwdres;
2215  char buf[10000];
2216  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
2217  assert(!res);
2218  EXPECT_NOT_POISONED(pwd.pw_name);
2219  assert(pwd.pw_name);
2220  EXPECT_NOT_POISONED(pwd.pw_name[0]);
2221  EXPECT_NOT_POISONED(pwd.pw_uid);
2222  assert(pwd.pw_uid == 0);
2223}
2224
2225TEST(MemorySanitizer, getpwnam_r_positive) {
2226  struct passwd pwd;
2227  struct passwd *pwdres;
2228  char s[5];
2229  strncpy(s, "abcd", 5);
2230  __msan_poison(s, 5);
2231  char buf[10000];
2232  int res;
2233  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2234}
2235
2236TEST(MemorySanitizer, getgrnam_r) {
2237  struct group grp;
2238  struct group *grpres;
2239  char buf[10000];
2240  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2241  assert(!res);
2242  EXPECT_NOT_POISONED(grp.gr_name);
2243  assert(grp.gr_name);
2244  EXPECT_NOT_POISONED(grp.gr_name[0]);
2245  EXPECT_NOT_POISONED(grp.gr_gid);
2246}
2247
2248template<class T>
2249static bool applySlt(T value, T shadow) {
2250  __msan_partial_poison(&value, &shadow, sizeof(T));
2251  volatile bool zzz = true;
2252  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2253  // a shift-and-trunc to get at the highest bit.
2254  volatile bool v = value < 0 || zzz;
2255  return v;
2256}
2257
2258TEST(MemorySanitizer, SignedCompareWithZero) {
2259  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2260  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2261  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2262  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2263  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2264  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2265}
2266
2267template <class T, class S>
2268static T poisoned(T Va, S Sa) {
2269  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2270  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2271  T a;
2272  a = Va;
2273  __msan_partial_poison(&a, &Sa, sizeof(T));
2274  return a;
2275}
2276
2277TEST(MemorySanitizer, ICmpRelational) {
2278  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2279  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2280  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2281  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2282  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2283  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2284                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2285  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2286                  poisoned(-1, 0xFFFFFFFFU));
2287
2288  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2289  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2290  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2291  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2292  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2293  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2294                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2295  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2296                  poisoned(-1, 0xFFFFFFFFU));
2297
2298  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2299  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2300  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2301  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2302  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2303  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2304                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2305  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2306                  poisoned(-1, 0xFFFFFFFFU));
2307
2308  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2309  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2310  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2311  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2312  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2313  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2314                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2315  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2316                  poisoned(-1, 0xFFFFFFFFU));
2317
2318  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2319  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2320
2321  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2322}
2323
2324#if MSAN_HAS_M128
2325TEST(MemorySanitizer, ICmpVectorRelational) {
2326  EXPECT_NOT_POISONED(
2327      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2328                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2329  EXPECT_NOT_POISONED(
2330      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2331                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2332  EXPECT_POISONED(
2333      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2334                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2335  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2336                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2337}
2338#endif
2339
2340// Volatile bitfield store is implemented as load-mask-store
2341// Test that we don't warn on the store of (uninitialized) padding.
2342struct VolatileBitfieldStruct {
2343  volatile unsigned x : 1;
2344  unsigned y : 1;
2345};
2346
2347TEST(MemorySanitizer, VolatileBitfield) {
2348  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2349  S->x = 1;
2350  EXPECT_NOT_POISONED((unsigned)S->x);
2351  EXPECT_POISONED((unsigned)S->y);
2352}
2353
2354TEST(MemorySanitizer, UnalignedLoad) {
2355  char x[32];
2356  memset(x + 8, 0, 16);
2357  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2358  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2359  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2360  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2361  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2362  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2363  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2364
2365  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2366  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2367  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2368  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2369  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2370  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2371  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2372
2373  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2374  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2375  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2376  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2377  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2378  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2379  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2380  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2381  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2382}
2383
2384TEST(MemorySanitizer, UnalignedStore16) {
2385  char x[5];
2386  U2 y = 0;
2387  __msan_poison(&y, 1);
2388  __sanitizer_unaligned_store16(x + 1, y);
2389  EXPECT_POISONED(x[0]);
2390  EXPECT_POISONED(x[1]);
2391  EXPECT_NOT_POISONED(x[2]);
2392  EXPECT_POISONED(x[3]);
2393  EXPECT_POISONED(x[4]);
2394}
2395
2396TEST(MemorySanitizer, UnalignedStore32) {
2397  char x[8];
2398  U4 y4 = 0;
2399  __msan_poison(&y4, 2);
2400  __sanitizer_unaligned_store32(x+3, y4);
2401  EXPECT_POISONED(x[0]);
2402  EXPECT_POISONED(x[1]);
2403  EXPECT_POISONED(x[2]);
2404  EXPECT_POISONED(x[3]);
2405  EXPECT_POISONED(x[4]);
2406  EXPECT_NOT_POISONED(x[5]);
2407  EXPECT_NOT_POISONED(x[6]);
2408  EXPECT_POISONED(x[7]);
2409}
2410
2411TEST(MemorySanitizer, UnalignedStore64) {
2412  char x[16];
2413  U8 y = 0;
2414  __msan_poison(&y, 3);
2415  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2416  __sanitizer_unaligned_store64(x+3, y);
2417  EXPECT_POISONED(x[0]);
2418  EXPECT_POISONED(x[1]);
2419  EXPECT_POISONED(x[2]);
2420  EXPECT_POISONED(x[3]);
2421  EXPECT_POISONED(x[4]);
2422  EXPECT_POISONED(x[5]);
2423  EXPECT_NOT_POISONED(x[6]);
2424  EXPECT_NOT_POISONED(x[7]);
2425  EXPECT_NOT_POISONED(x[8]);
2426  EXPECT_POISONED(x[9]);
2427  EXPECT_NOT_POISONED(x[10]);
2428  EXPECT_POISONED(x[11]);
2429}
2430
2431TEST(MemorySanitizerDr, StoreInDSOTest) {
2432  if (!__msan_has_dynamic_component()) return;
2433  char* s = new char[10];
2434  dso_memfill(s, 9);
2435  EXPECT_NOT_POISONED(s[5]);
2436  EXPECT_POISONED(s[9]);
2437}
2438
2439int return_poisoned_int() {
2440  return ReturnPoisoned<U8>();
2441}
2442
2443TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2444  if (!__msan_has_dynamic_component()) return;
2445  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2446}
2447
2448NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2449  EXPECT_POISONED(x);
2450  EXPECT_POISONED(y);
2451  EXPECT_POISONED(z);
2452  return 0;
2453}
2454
2455static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2456  EXPECT_NOT_POISONED(x);
2457  EXPECT_NOT_POISONED(y);
2458  EXPECT_NOT_POISONED(z);
2459  return 0;
2460}
2461
2462TEST(MemorySanitizerDr, CallFromDSOTest) {
2463  if (!__msan_has_dynamic_component()) return;
2464  S8* x = GetPoisoned<S8>();
2465  S8* y = GetPoisoned<S8>();
2466  S8* z = GetPoisoned<S8>();
2467  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2468  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2469}
2470
2471static void StackStoreInDSOFn(int* x, int* y) {
2472  EXPECT_NOT_POISONED(*x);
2473  EXPECT_NOT_POISONED(*y);
2474}
2475
2476TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2477  if (!__msan_has_dynamic_component()) return;
2478  dso_stack_store(StackStoreInDSOFn, 1);
2479}
2480
2481TEST(MemorySanitizerOrigins, SetGet) {
2482  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2483  if (!TrackingOrigins()) return;
2484  int x;
2485  __msan_set_origin(&x, sizeof(x), 1234);
2486  EXPECT_EQ(1234, __msan_get_origin(&x));
2487  __msan_set_origin(&x, sizeof(x), 5678);
2488  EXPECT_EQ(5678, __msan_get_origin(&x));
2489  __msan_set_origin(&x, sizeof(x), 0);
2490  EXPECT_EQ(0, __msan_get_origin(&x));
2491}
2492
2493namespace {
2494struct S {
2495  U4 dummy;
2496  U2 a;
2497  U2 b;
2498};
2499
2500// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2501TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2502  if (!TrackingOrigins()) return;
2503
2504  S s;
2505  U4 origin = rand();  // NOLINT
2506  s.a = *GetPoisonedO<U2>(0, origin);
2507  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2508  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2509
2510  s.b = 42;
2511  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2512  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2513}
2514}  // namespace
2515
2516template<class T, class BinaryOp>
2517INLINE
2518void BinaryOpOriginTest(BinaryOp op) {
2519  U4 ox = rand();  //NOLINT
2520  U4 oy = rand();  //NOLINT
2521  T *x = GetPoisonedO<T>(0, ox, 0);
2522  T *y = GetPoisonedO<T>(1, oy, 0);
2523  T *z = GetPoisonedO<T>(2, 0, 0);
2524
2525  *z = op(*x, *y);
2526  U4 origin = __msan_get_origin(z);
2527  EXPECT_POISONED_O(*z, origin);
2528  EXPECT_EQ(true, origin == ox || origin == oy);
2529
2530  // y is poisoned, x is not.
2531  *x = 10101;
2532  *y = *GetPoisonedO<T>(1, oy);
2533  break_optimization(x);
2534  __msan_set_origin(z, sizeof(*z), 0);
2535  *z = op(*x, *y);
2536  EXPECT_POISONED_O(*z, oy);
2537  EXPECT_EQ(__msan_get_origin(z), oy);
2538
2539  // x is poisoned, y is not.
2540  *x = *GetPoisonedO<T>(0, ox);
2541  *y = 10101010;
2542  break_optimization(y);
2543  __msan_set_origin(z, sizeof(*z), 0);
2544  *z = op(*x, *y);
2545  EXPECT_POISONED_O(*z, ox);
2546  EXPECT_EQ(__msan_get_origin(z), ox);
2547}
2548
2549template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2550template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2551template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2552template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2553template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2554template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2555
2556TEST(MemorySanitizerOrigins, BinaryOp) {
2557  if (!TrackingOrigins()) return;
2558  BinaryOpOriginTest<S8>(XOR<S8>);
2559  BinaryOpOriginTest<U8>(ADD<U8>);
2560  BinaryOpOriginTest<S4>(SUB<S4>);
2561  BinaryOpOriginTest<S4>(MUL<S4>);
2562  BinaryOpOriginTest<U4>(OR<U4>);
2563  BinaryOpOriginTest<U4>(AND<U4>);
2564  BinaryOpOriginTest<double>(ADD<U4>);
2565  BinaryOpOriginTest<float>(ADD<S4>);
2566  BinaryOpOriginTest<double>(ADD<double>);
2567  BinaryOpOriginTest<float>(ADD<double>);
2568}
2569
2570TEST(MemorySanitizerOrigins, Unary) {
2571  if (!TrackingOrigins()) return;
2572  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2573  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2574  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2575  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2576
2577  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2578  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2579  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2580  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2581
2582  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2583  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2584  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2585  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2586
2587  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2588  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2589  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2590  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2591
2592  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2593  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2594}
2595
2596TEST(MemorySanitizerOrigins, EQ) {
2597  if (!TrackingOrigins()) return;
2598  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2599  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2600  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2601}
2602
2603TEST(MemorySanitizerOrigins, DIV) {
2604  if (!TrackingOrigins()) return;
2605  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2606  unsigned o = __LINE__;
2607  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2608}
2609
2610TEST(MemorySanitizerOrigins, SHIFT) {
2611  if (!TrackingOrigins()) return;
2612  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2613  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2614  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2615  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2616  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2617  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2618}
2619
2620template<class T, int N>
2621void MemCpyTest() {
2622  int ox = __LINE__;
2623  T *x = new T[N];
2624  T *y = new T[N];
2625  T *z = new T[N];
2626  T *q = new T[N];
2627  __msan_poison(x, N * sizeof(T));
2628  __msan_set_origin(x, N * sizeof(T), ox);
2629  __msan_set_origin(y, N * sizeof(T), 777777);
2630  __msan_set_origin(z, N * sizeof(T), 888888);
2631  EXPECT_NOT_POISONED(x);
2632  memcpy(y, x, N * sizeof(T));
2633  EXPECT_POISONED_O(y[0], ox);
2634  EXPECT_POISONED_O(y[N/2], ox);
2635  EXPECT_POISONED_O(y[N-1], ox);
2636  EXPECT_NOT_POISONED(x);
2637  void *res = mempcpy(q, x, N * sizeof(T));
2638  ASSERT_EQ(q + N, res);
2639  EXPECT_POISONED_O(q[0], ox);
2640  EXPECT_POISONED_O(q[N/2], ox);
2641  EXPECT_POISONED_O(q[N-1], ox);
2642  EXPECT_NOT_POISONED(x);
2643  memmove(z, x, N * sizeof(T));
2644  EXPECT_POISONED_O(z[0], ox);
2645  EXPECT_POISONED_O(z[N/2], ox);
2646  EXPECT_POISONED_O(z[N-1], ox);
2647}
2648
2649TEST(MemorySanitizerOrigins, LargeMemCpy) {
2650  if (!TrackingOrigins()) return;
2651  MemCpyTest<U1, 10000>();
2652  MemCpyTest<U8, 10000>();
2653}
2654
2655TEST(MemorySanitizerOrigins, SmallMemCpy) {
2656  if (!TrackingOrigins()) return;
2657  MemCpyTest<U8, 1>();
2658  MemCpyTest<U8, 2>();
2659  MemCpyTest<U8, 3>();
2660}
2661
2662TEST(MemorySanitizerOrigins, Select) {
2663  if (!TrackingOrigins()) return;
2664  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2665  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2666  S4 x;
2667  break_optimization(&x);
2668  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2669
2670  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2671  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2672}
2673
2674extern "C"
2675NOINLINE char AllocaTO() {
2676  int ar[100];
2677  break_optimization(ar);
2678  return ar[10];
2679  // fprintf(stderr, "Descr: %s\n",
2680  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2681}
2682
2683TEST(MemorySanitizerOrigins, Alloca) {
2684  if (!TrackingOrigins()) return;
2685  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2686  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2687  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2688  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2689}
2690
2691// FIXME: replace with a lit-like test.
2692TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2693  if (!TrackingOrigins()) return;
2694  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2695}
2696
2697NOINLINE int RetvalOriginTest(U4 origin) {
2698  int *a = new int;
2699  break_optimization(a);
2700  __msan_set_origin(a, sizeof(*a), origin);
2701  int res = *a;
2702  delete a;
2703  return res;
2704}
2705
2706TEST(MemorySanitizerOrigins, Retval) {
2707  if (!TrackingOrigins()) return;
2708  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2709}
2710
2711NOINLINE void ParamOriginTest(int param, U4 origin) {
2712  EXPECT_POISONED_O(param, origin);
2713}
2714
2715TEST(MemorySanitizerOrigins, Param) {
2716  if (!TrackingOrigins()) return;
2717  int *a = new int;
2718  U4 origin = __LINE__;
2719  break_optimization(a);
2720  __msan_set_origin(a, sizeof(*a), origin);
2721  ParamOriginTest(*a, origin);
2722  delete a;
2723}
2724
2725TEST(MemorySanitizerOrigins, Invoke) {
2726  if (!TrackingOrigins()) return;
2727  StructWithDtor s;  // Will cause the calls to become invokes.
2728  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2729}
2730
2731TEST(MemorySanitizerOrigins, strlen) {
2732  S8 alignment;
2733  break_optimization(&alignment);
2734  char x[4] = {'a', 'b', 0, 0};
2735  __msan_poison(&x[2], 1);
2736  U4 origin = __LINE__;
2737  __msan_set_origin(x, sizeof(x), origin);
2738  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2739}
2740
2741TEST(MemorySanitizerOrigins, wcslen) {
2742  wchar_t w[3] = {'a', 'b', 0};
2743  U4 origin = __LINE__;
2744  __msan_set_origin(w, sizeof(w), origin);
2745  __msan_poison(&w[2], sizeof(wchar_t));
2746  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2747}
2748
2749#if MSAN_HAS_M128
2750TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2751  __m128 x, y;
2752  U4 origin = __LINE__;
2753  __msan_set_origin(&x, sizeof(x), origin);
2754  __msan_poison(&x, sizeof(x));
2755  __builtin_ia32_storeups((float*)&y, x);
2756  EXPECT_POISONED_O(y, origin);
2757}
2758#endif
2759
2760NOINLINE void RecursiveMalloc(int depth) {
2761  static int count;
2762  count++;
2763  if ((count % (1024 * 1024)) == 0)
2764    printf("RecursiveMalloc: %d\n", count);
2765  int *x1 = new int;
2766  int *x2 = new int;
2767  break_optimization(x1);
2768  break_optimization(x2);
2769  if (depth > 0) {
2770    RecursiveMalloc(depth-1);
2771    RecursiveMalloc(depth-1);
2772  }
2773  delete x1;
2774  delete x2;
2775}
2776
2777TEST(MemorySanitizer, CallocOverflow) {
2778  size_t kArraySize = 4096;
2779  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2780  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2781  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2782  EXPECT_EQ(0L, Ident(p));
2783}
2784
2785TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2786  RecursiveMalloc(22);
2787}
2788