msan_test.cc revision e18e3f07802c420eb4b2da407e148084b75cecc9 
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 <poll.h>
38#include <sys/types.h>
39#include <sys/stat.h>
40#include <fcntl.h>
41#include <sys/resource.h>
42#include <sys/ioctl.h>
43#include <sys/sysinfo.h>
44#include <sys/utsname.h>
45#include <sys/mman.h>
46#include <sys/vfs.h>
47#include <dirent.h>
48#include <pwd.h>
49#include <sys/socket.h>
50#include <netdb.h>
51
52#if defined(__i386__) || defined(__x86_64__)
53# include <emmintrin.h>
54# define MSAN_HAS_M128 1
55#else
56# define MSAN_HAS_M128 0
57#endif
58
59typedef unsigned char      U1;
60typedef unsigned short     U2;  // NOLINT
61typedef unsigned int       U4;
62typedef unsigned long long U8;  // NOLINT
63typedef   signed char      S1;
64typedef   signed short     S2;  // NOLINT
65typedef   signed int       S4;
66typedef   signed long long S8;  // NOLINT
67#define NOINLINE      __attribute__((noinline))
68#define INLINE      __attribute__((always_inline))
69
70static bool TrackingOrigins() {
71  S8 x;
72  __msan_set_origin(&x, sizeof(x), 0x1234);
73  U4 origin = __msan_get_origin(&x);
74  __msan_set_origin(&x, sizeof(x), 0);
75  return origin == 0x1234;
76}
77
78#define EXPECT_UMR(action) \
79    do {                        \
80      __msan_set_expect_umr(1); \
81      action;                   \
82      __msan_set_expect_umr(0); \
83    } while (0)
84
85#define EXPECT_UMR_O(action, origin) \
86    do {                                            \
87      __msan_set_expect_umr(1);                     \
88      action;                                       \
89      __msan_set_expect_umr(0);                     \
90      if (TrackingOrigins())                        \
91        EXPECT_EQ(origin, __msan_get_umr_origin()); \
92    } while (0)
93
94#define EXPECT_UMR_S(action, stack_origin) \
95    do {                                            \
96      __msan_set_expect_umr(1);                     \
97      action;                                       \
98      __msan_set_expect_umr(0);                     \
99      U4 id = __msan_get_umr_origin();             \
100      const char *str = __msan_get_origin_descr_if_stack(id); \
101      if (!str || strcmp(str, stack_origin)) {      \
102        fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \
103                id, stack_origin, str);  \
104        EXPECT_EQ(1, 0);                            \
105      }                                             \
106    } while (0)
107
108#define EXPECT_POISONED(x) ExpectPoisoned(x)
109
110template<typename T>
111void ExpectPoisoned(const T& t) {
112  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
113}
114
115#define EXPECT_POISONED_O(x, origin) \
116  ExpectPoisonedWithOrigin(x, origin)
117
118template<typename T>
119void ExpectPoisonedWithOrigin(const T& t, unsigned origin) {
120  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
121  if (TrackingOrigins())
122    EXPECT_EQ(origin, __msan_get_origin((void*)&t));
123}
124
125#define EXPECT_POISONED_S(x, stack_origin) \
126  ExpectPoisonedWithStackOrigin(x, stack_origin)
127
128template<typename T>
129void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) {
130  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
131  U4 id = __msan_get_origin((void*)&t);
132  const char *str = __msan_get_origin_descr_if_stack(id);
133  if (!str || strcmp(str, stack_origin)) {
134    fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s",
135        id, stack_origin, str);
136    EXPECT_EQ(1, 0);
137  }
138}
139
140#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x)
141
142template<typename T>
143void ExpectNotPoisoned(const T& t) {
144  EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t)));
145}
146
147static U8 poisoned_array[100];
148template<class T>
149T *GetPoisoned(int i = 0, T val = 0) {
150  T *res = (T*)&poisoned_array[i];
151  *res = val;
152  __msan_poison(&poisoned_array[i], sizeof(T));
153  return res;
154}
155
156template<class T>
157T *GetPoisonedO(int i, U4 origin, T val = 0) {
158  T *res = (T*)&poisoned_array[i];
159  *res = val;
160  __msan_poison(&poisoned_array[i], sizeof(T));
161  __msan_set_origin(&poisoned_array[i], sizeof(T), origin);
162  return res;
163}
164
165// This function returns its parameter but in such a way that compiler
166// can not prove it.
167template<class T>
168NOINLINE
169static T Ident(T t) {
170  volatile T ret = t;
171  return ret;
172}
173
174template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); }
175
176static volatile int g_one = 1;
177static volatile int g_zero = 0;
178static volatile int g_0 = 0;
179static volatile int g_1 = 1;
180
181S4 a_s4[100];
182S8 a_s8[100];
183
184// Check that malloc poisons memory.
185// A lot of tests below depend on this.
186TEST(MemorySanitizerSanity, PoisonInMalloc) {
187  int *x = (int*)malloc(sizeof(int));
188  EXPECT_POISONED(*x);
189  free(x);
190}
191
192TEST(MemorySanitizer, NegativeTest1) {
193  S4 *x = GetPoisoned<S4>();
194  if (g_one)
195    *x = 0;
196  EXPECT_NOT_POISONED(*x);
197}
198
199TEST(MemorySanitizer, PositiveTest1) {
200  // Load to store.
201  EXPECT_POISONED(*GetPoisoned<S1>());
202  EXPECT_POISONED(*GetPoisoned<S2>());
203  EXPECT_POISONED(*GetPoisoned<S4>());
204  EXPECT_POISONED(*GetPoisoned<S8>());
205
206  // S->S conversions.
207  EXPECT_POISONED(*GetPoisoned<S1>());
208  EXPECT_POISONED(*GetPoisoned<S1>());
209  EXPECT_POISONED(*GetPoisoned<S1>());
210
211  EXPECT_POISONED(*GetPoisoned<S2>());
212  EXPECT_POISONED(*GetPoisoned<S2>());
213  EXPECT_POISONED(*GetPoisoned<S2>());
214
215  EXPECT_POISONED(*GetPoisoned<S4>());
216  EXPECT_POISONED(*GetPoisoned<S4>());
217  EXPECT_POISONED(*GetPoisoned<S4>());
218
219  EXPECT_POISONED(*GetPoisoned<S8>());
220  EXPECT_POISONED(*GetPoisoned<S8>());
221  EXPECT_POISONED(*GetPoisoned<S8>());
222
223  // ZExt
224  EXPECT_POISONED(*GetPoisoned<U1>());
225  EXPECT_POISONED(*GetPoisoned<U1>());
226  EXPECT_POISONED(*GetPoisoned<U1>());
227  EXPECT_POISONED(*GetPoisoned<U2>());
228  EXPECT_POISONED(*GetPoisoned<U2>());
229  EXPECT_POISONED(*GetPoisoned<U4>());
230
231  // Unary ops.
232  EXPECT_POISONED(- *GetPoisoned<S4>());
233
234  EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1));
235
236
237  a_s4[g_zero] = 1 - *GetPoisoned<S4>();
238  a_s4[g_zero] = 1 + *GetPoisoned<S4>();
239}
240
241TEST(MemorySanitizer, Phi1) {
242  S4 c;
243  if (g_one) {
244    c = *GetPoisoned<S4>();
245  } else {
246    break_optimization(0);
247    c = 0;
248  }
249  EXPECT_POISONED(c);
250}
251
252TEST(MemorySanitizer, Phi2) {
253  S4 i = *GetPoisoned<S4>();
254  S4 n = g_one;
255  EXPECT_UMR(for (; i < g_one; i++););
256  EXPECT_POISONED(i);
257}
258
259NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); }
260NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); }
261NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); }
262
263TEST(MemorySanitizer, ArgTest) {
264  Arg1ExpectUMR(*GetPoisoned<S4>());
265  Arg2ExpectUMR(0, *GetPoisoned<S4>());
266  Arg3ExpectUMR(0, 1, *GetPoisoned<S8>());
267}
268
269
270TEST(MemorySanitizer, CallAndRet) {
271  if (!__msan_has_dynamic_component()) return;
272  ReturnPoisoned<S1>();
273  ReturnPoisoned<S2>();
274  ReturnPoisoned<S4>();
275  ReturnPoisoned<S8>();
276
277  EXPECT_POISONED(ReturnPoisoned<S1>());
278  EXPECT_POISONED(ReturnPoisoned<S2>());
279  EXPECT_POISONED(ReturnPoisoned<S4>());
280  EXPECT_POISONED(ReturnPoisoned<S8>());
281}
282
283// malloc() in the following test may be optimized to produce a compile-time
284// undef value. Check that we trap on the volatile assignment anyway.
285TEST(MemorySanitizer, DISABLED_MallocNoIdent) {
286  S4 *x = (int*)malloc(sizeof(S4));
287  EXPECT_POISONED(*x);
288  free(x);
289}
290
291TEST(MemorySanitizer, Malloc) {
292  S4 *x = (int*)Ident(malloc(sizeof(S4)));
293  EXPECT_POISONED(*x);
294  free(x);
295}
296
297TEST(MemorySanitizer, Realloc) {
298  S4 *x = (int*)Ident(realloc(0, sizeof(S4)));
299  EXPECT_POISONED(x[0]);
300  x[0] = 1;
301  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
302  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
303  EXPECT_POISONED(x[1]);
304  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
305  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
306  EXPECT_POISONED(x[2]);
307  EXPECT_POISONED(x[1]);
308  x[2] = 1;  // Init this here. Check that after realloc it is poisoned again.
309  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
310  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
311  EXPECT_POISONED(x[1]);
312  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
313  EXPECT_POISONED(x[1]);
314  EXPECT_POISONED(x[2]);
315  free(x);
316}
317
318TEST(MemorySanitizer, Calloc) {
319  S4 *x = (int*)Ident(calloc(1, sizeof(S4)));
320  EXPECT_NOT_POISONED(*x);  // Should not be poisoned.
321  // EXPECT_EQ(0, *x);
322  free(x);
323}
324
325TEST(MemorySanitizer, AndOr) {
326  U4 *p = GetPoisoned<U4>();
327  // We poison two bytes in the midle of a 4-byte word to make the test
328  // correct regardless of endianness.
329  ((U1*)p)[1] = 0;
330  ((U1*)p)[2] = 0xff;
331  EXPECT_NOT_POISONED(*p & 0x00ffff00);
332  EXPECT_NOT_POISONED(*p & 0x00ff0000);
333  EXPECT_NOT_POISONED(*p & 0x0000ff00);
334  EXPECT_POISONED(*p & 0xff000000);
335  EXPECT_POISONED(*p & 0x000000ff);
336  EXPECT_POISONED(*p & 0x0000ffff);
337  EXPECT_POISONED(*p & 0xffff0000);
338
339  EXPECT_NOT_POISONED(*p | 0xff0000ff);
340  EXPECT_NOT_POISONED(*p | 0xff00ffff);
341  EXPECT_NOT_POISONED(*p | 0xffff00ff);
342  EXPECT_POISONED(*p | 0xff000000);
343  EXPECT_POISONED(*p | 0x000000ff);
344  EXPECT_POISONED(*p | 0x0000ffff);
345  EXPECT_POISONED(*p | 0xffff0000);
346
347  EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>());
348}
349
350template<class T>
351static bool applyNot(T value, T shadow) {
352  __msan_partial_poison(&value, &shadow, sizeof(T));
353  return !value;
354}
355
356TEST(MemorySanitizer, Not) {
357  EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0));
358  EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0));
359  EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF));
360  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF));
361  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF));
362  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF));
363  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000));
364  EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000));
365  EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000));
366  EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000));
367
368  EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0));
369  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE));
370  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0));
371  EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF));
372
373  EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1)));
374  EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2)));
375}
376
377TEST(MemorySanitizer, Shift) {
378  U4 *up = GetPoisoned<U4>();
379  ((U1*)up)[0] = 0;
380  ((U1*)up)[3] = 0xff;
381  EXPECT_NOT_POISONED(*up >> 30);
382  EXPECT_NOT_POISONED(*up >> 24);
383  EXPECT_POISONED(*up >> 23);
384  EXPECT_POISONED(*up >> 10);
385
386  EXPECT_NOT_POISONED(*up << 30);
387  EXPECT_NOT_POISONED(*up << 24);
388  EXPECT_POISONED(*up << 23);
389  EXPECT_POISONED(*up << 10);
390
391  S4 *sp = (S4*)up;
392  EXPECT_NOT_POISONED(*sp >> 30);
393  EXPECT_NOT_POISONED(*sp >> 24);
394  EXPECT_POISONED(*sp >> 23);
395  EXPECT_POISONED(*sp >> 10);
396
397  sp = GetPoisoned<S4>();
398  ((S1*)sp)[1] = 0;
399  ((S1*)sp)[2] = 0;
400  EXPECT_POISONED(*sp >> 31);
401
402  EXPECT_POISONED(100 >> *GetPoisoned<S4>());
403  EXPECT_POISONED(100U >> *GetPoisoned<S4>());
404}
405
406NOINLINE static int GetPoisonedZero() {
407  int *zero = new int;
408  *zero = 0;
409  __msan_poison(zero, sizeof(*zero));
410  int res = *zero;
411  delete zero;
412  return res;
413}
414
415TEST(MemorySanitizer, LoadFromDirtyAddress) {
416  int *a = new int;
417  *a = 0;
418  EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()]));
419  delete a;
420}
421
422TEST(MemorySanitizer, StoreToDirtyAddress) {
423  int *a = new int;
424  EXPECT_UMR(a[GetPoisonedZero()] = 0);
425  break_optimization(a);
426  delete a;
427}
428
429
430NOINLINE void StackTestFunc() {
431  S4 p4;
432  S4 ok4 = 1;
433  S2 p2;
434  S2 ok2 = 1;
435  S1 p1;
436  S1 ok1 = 1;
437  break_optimization(&p4);
438  break_optimization(&ok4);
439  break_optimization(&p2);
440  break_optimization(&ok2);
441  break_optimization(&p1);
442  break_optimization(&ok1);
443
444  EXPECT_POISONED(p4);
445  EXPECT_POISONED(p2);
446  EXPECT_POISONED(p1);
447  EXPECT_NOT_POISONED(ok1);
448  EXPECT_NOT_POISONED(ok2);
449  EXPECT_NOT_POISONED(ok4);
450}
451
452TEST(MemorySanitizer, StackTest) {
453  StackTestFunc();
454}
455
456NOINLINE void StackStressFunc() {
457  int foo[10000];
458  break_optimization(foo);
459}
460
461TEST(MemorySanitizer, DISABLED_StackStressTest) {
462  for (int i = 0; i < 1000000; i++)
463    StackStressFunc();
464}
465
466template<class T>
467void TestFloatingPoint() {
468  static volatile T v;
469  static T g[100];
470  break_optimization(&g);
471  T *x = GetPoisoned<T>();
472  T *y = GetPoisoned<T>(1);
473  EXPECT_POISONED(*x);
474  EXPECT_POISONED((long long)*x);
475  EXPECT_POISONED((int)*x);
476  g[0] = *x;
477  g[1] = *x + *y;
478  g[2] = *x - *y;
479  g[3] = *x * *y;
480}
481
482TEST(MemorySanitizer, FloatingPointTest) {
483  TestFloatingPoint<float>();
484  TestFloatingPoint<double>();
485}
486
487TEST(MemorySanitizer, DynMem) {
488  S4 x = 0;
489  S4 *y = GetPoisoned<S4>();
490  memcpy(y, &x, g_one * sizeof(S4));
491  EXPECT_NOT_POISONED(*y);
492}
493
494static char *DynRetTestStr;
495
496TEST(MemorySanitizer, DynRet) {
497  if (!__msan_has_dynamic_component()) return;
498  ReturnPoisoned<S8>();
499  EXPECT_NOT_POISONED(clearenv());
500}
501
502
503TEST(MemorySanitizer, DynRet1) {
504  if (!__msan_has_dynamic_component()) return;
505  ReturnPoisoned<S8>();
506}
507
508struct LargeStruct {
509  S4 x[10];
510};
511
512NOINLINE
513LargeStruct LargeRetTest() {
514  LargeStruct res;
515  res.x[0] = *GetPoisoned<S4>();
516  res.x[1] = *GetPoisoned<S4>();
517  res.x[2] = *GetPoisoned<S4>();
518  res.x[3] = *GetPoisoned<S4>();
519  res.x[4] = *GetPoisoned<S4>();
520  res.x[5] = *GetPoisoned<S4>();
521  res.x[6] = *GetPoisoned<S4>();
522  res.x[7] = *GetPoisoned<S4>();
523  res.x[8] = *GetPoisoned<S4>();
524  res.x[9] = *GetPoisoned<S4>();
525  return res;
526}
527
528TEST(MemorySanitizer, strcmp) {
529  char s1[10];
530  char s2[10];
531  strncpy(s1, "foo", 10);
532  s2[0] = 'f';
533  s2[1] = 'n';
534  EXPECT_GT(strcmp(s1, s2), 0);
535  s2[1] = 'o';
536  int res;
537  EXPECT_UMR(res = strcmp(s1, s2));
538  EXPECT_NOT_POISONED(res);
539  EXPECT_EQ(strncmp(s1, s2, 1), 0);
540}
541
542TEST(MemorySanitizer, LargeRet) {
543  LargeStruct a = LargeRetTest();
544  EXPECT_POISONED(a.x[0]);
545  EXPECT_POISONED(a.x[9]);
546}
547
548TEST(MemorySanitizer, strerror) {
549  char *buf = strerror(EINVAL);
550  EXPECT_NOT_POISONED(strlen(buf));
551  buf = strerror(123456);
552  EXPECT_NOT_POISONED(strlen(buf));
553}
554
555TEST(MemorySanitizer, strerror_r) {
556  errno = 0;
557  char buf[1000];
558  char *res = strerror_r(EINVAL, buf, sizeof(buf));
559  ASSERT_EQ(0, errno);
560  if (!res) res = buf; // POSIX version success.
561  EXPECT_NOT_POISONED(strlen(res));
562}
563
564TEST(MemorySanitizer, fread) {
565  char *x = new char[32];
566  FILE *f = fopen("/proc/self/stat", "r");
567  assert(f);
568  fread(x, 1, 32, f);
569  EXPECT_NOT_POISONED(x[0]);
570  EXPECT_NOT_POISONED(x[16]);
571  EXPECT_NOT_POISONED(x[31]);
572  fclose(f);
573  delete x;
574}
575
576TEST(MemorySanitizer, read) {
577  char *x = new char[32];
578  int fd = open("/proc/self/stat", O_RDONLY);
579  assert(fd > 0);
580  int sz = read(fd, x, 32);
581  assert(sz == 32);
582  EXPECT_NOT_POISONED(x[0]);
583  EXPECT_NOT_POISONED(x[16]);
584  EXPECT_NOT_POISONED(x[31]);
585  close(fd);
586  delete x;
587}
588
589TEST(MemorySanitizer, pread) {
590  char *x = new char[32];
591  int fd = open("/proc/self/stat", O_RDONLY);
592  assert(fd > 0);
593  int sz = pread(fd, x, 32, 0);
594  assert(sz == 32);
595  EXPECT_NOT_POISONED(x[0]);
596  EXPECT_NOT_POISONED(x[16]);
597  EXPECT_NOT_POISONED(x[31]);
598  close(fd);
599  delete x;
600}
601
602TEST(MemorySanitizer, readv) {
603  char buf[2011];
604  struct iovec iov[2];
605  iov[0].iov_base = buf + 1;
606  iov[0].iov_len = 5;
607  iov[1].iov_base = buf + 10;
608  iov[1].iov_len = 2000;
609  int fd = open("/proc/self/stat", O_RDONLY);
610  assert(fd > 0);
611  int sz = readv(fd, iov, 2);
612  ASSERT_LT(sz, 5 + 2000);
613  ASSERT_GT(sz, iov[0].iov_len);
614  EXPECT_POISONED(buf[0]);
615  EXPECT_NOT_POISONED(buf[1]);
616  EXPECT_NOT_POISONED(buf[5]);
617  EXPECT_POISONED(buf[6]);
618  EXPECT_POISONED(buf[9]);
619  EXPECT_NOT_POISONED(buf[10]);
620  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
621  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
622  close(fd);
623}
624
625TEST(MemorySanitizer, preadv) {
626  char buf[2011];
627  struct iovec iov[2];
628  iov[0].iov_base = buf + 1;
629  iov[0].iov_len = 5;
630  iov[1].iov_base = buf + 10;
631  iov[1].iov_len = 2000;
632  int fd = open("/proc/self/stat", O_RDONLY);
633  assert(fd > 0);
634  int sz = preadv(fd, iov, 2, 3);
635  ASSERT_LT(sz, 5 + 2000);
636  ASSERT_GT(sz, iov[0].iov_len);
637  EXPECT_POISONED(buf[0]);
638  EXPECT_NOT_POISONED(buf[1]);
639  EXPECT_NOT_POISONED(buf[5]);
640  EXPECT_POISONED(buf[6]);
641  EXPECT_POISONED(buf[9]);
642  EXPECT_NOT_POISONED(buf[10]);
643  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
644  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
645  close(fd);
646}
647
648// FIXME: fails now.
649TEST(MemorySanitizer, DISABLED_ioctl) {
650  struct winsize ws;
651  EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0);
652  EXPECT_NOT_POISONED(ws.ws_col);
653}
654
655TEST(MemorySanitizer, readlink) {
656  char *x = new char[1000];
657  readlink("/proc/self/exe", x, 1000);
658  EXPECT_NOT_POISONED(x[0]);
659  delete [] x;
660}
661
662
663TEST(MemorySanitizer, stat) {
664  struct stat* st = new struct stat;
665  int res = stat("/proc/self/stat", st);
666  assert(!res);
667  EXPECT_NOT_POISONED(st->st_dev);
668  EXPECT_NOT_POISONED(st->st_mode);
669  EXPECT_NOT_POISONED(st->st_size);
670}
671
672TEST(MemorySanitizer, statfs) {
673  struct statfs* st = new struct statfs;
674  int res = statfs("/", st);
675  assert(!res);
676  EXPECT_NOT_POISONED(st->f_type);
677  EXPECT_NOT_POISONED(st->f_bfree);
678  EXPECT_NOT_POISONED(st->f_namelen);
679}
680
681TEST(MemorySanitizer, pipe) {
682  int* pipefd = new int[2];
683  int res = pipe(pipefd);
684  assert(!res);
685  EXPECT_NOT_POISONED(pipefd[0]);
686  EXPECT_NOT_POISONED(pipefd[1]);
687  close(pipefd[0]);
688  close(pipefd[1]);
689}
690
691TEST(MemorySanitizer, pipe2) {
692  int* pipefd = new int[2];
693  int res = pipe2(pipefd, O_NONBLOCK);
694  assert(!res);
695  EXPECT_NOT_POISONED(pipefd[0]);
696  EXPECT_NOT_POISONED(pipefd[1]);
697  close(pipefd[0]);
698  close(pipefd[1]);
699}
700
701TEST(MemorySanitizer, socketpair) {
702  int sv[2];
703  int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
704  assert(!res);
705  EXPECT_NOT_POISONED(sv[0]);
706  EXPECT_NOT_POISONED(sv[1]);
707  close(sv[0]);
708  close(sv[1]);
709}
710
711TEST(MemorySanitizer, poll) {
712  int* pipefd = new int[2];
713  int res = pipe(pipefd);
714  ASSERT_EQ(0, res);
715
716  char data = 42;
717  res = write(pipefd[1], &data, 1);
718  ASSERT_EQ(1, res);
719
720  pollfd fds[2];
721  fds[0].fd = pipefd[0];
722  fds[0].events = POLLIN;
723  fds[1].fd = pipefd[1];
724  fds[1].events = POLLIN;
725  res = poll(fds, 2, 500);
726  ASSERT_EQ(1, res);
727  EXPECT_NOT_POISONED(fds[0].revents);
728  EXPECT_NOT_POISONED(fds[1].revents);
729
730  close(pipefd[0]);
731  close(pipefd[1]);
732}
733
734TEST(MemorySanitizer, poll_positive) {
735  int* pipefd = new int[2];
736  int res = pipe(pipefd);
737  ASSERT_EQ(0, res);
738
739  pollfd fds[2];
740  fds[0].fd = pipefd[0];
741  fds[0].events = POLLIN;
742  // fds[1].fd uninitialized
743  fds[1].events = POLLIN;
744  EXPECT_UMR(poll(fds, 2, 0));
745
746  close(pipefd[0]);
747  close(pipefd[1]);
748}
749
750TEST(MemorySanitizer, bind_getsockname) {
751  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
752
753  struct sockaddr_in sai;
754  memset(&sai, 0, sizeof(sai));
755  sai.sin_family = AF_UNIX;
756  int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai));
757
758  assert(!res);
759  char buf[200];
760  socklen_t addrlen;
761  EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen));
762
763  addrlen = sizeof(buf);
764  res = getsockname(sock, (struct sockaddr *)&buf, &addrlen);
765  EXPECT_NOT_POISONED(addrlen);
766  EXPECT_NOT_POISONED(buf[0]);
767  EXPECT_NOT_POISONED(buf[addrlen - 1]);
768  EXPECT_POISONED(buf[addrlen]);
769  close(sock);
770}
771
772TEST(MemorySanitizer, accept) {
773  int listen_socket = socket(AF_INET, SOCK_STREAM, 0);
774  ASSERT_LT(0, listen_socket);
775
776  struct sockaddr_in sai;
777  sai.sin_family = AF_INET;
778  sai.sin_port = 0;
779  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
780  int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai));
781  ASSERT_EQ(0, res);
782
783  res = listen(listen_socket, 1);
784  ASSERT_EQ(0, res);
785
786  socklen_t sz = sizeof(sai);
787  res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz);
788  ASSERT_EQ(0, res);
789  ASSERT_EQ(sizeof(sai), sz);
790
791  int connect_socket = socket(AF_INET, SOCK_STREAM, 0);
792  ASSERT_LT(0, connect_socket);
793  res = fcntl(connect_socket, F_SETFL, O_NONBLOCK);
794  ASSERT_EQ(0, res);
795  res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai));
796  ASSERT_EQ(-1, res);
797  ASSERT_EQ(EINPROGRESS, errno);
798
799  __msan_poison(&sai, sizeof(sai));
800  int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz);
801  ASSERT_LT(0, new_sock);
802  ASSERT_EQ(sizeof(sai), sz);
803  EXPECT_NOT_POISONED(sai);
804
805  __msan_poison(&sai, sizeof(sai));
806  res = getpeername(new_sock, (struct sockaddr *)&sai, &sz);
807  ASSERT_EQ(0, res);
808  ASSERT_EQ(sizeof(sai), sz);
809  EXPECT_NOT_POISONED(sai);
810
811  close(new_sock);
812  close(connect_socket);
813  close(listen_socket);
814}
815
816TEST(MemorySanitizer, getaddrinfo) {
817  struct addrinfo *ai;
818  struct addrinfo hints;
819  memset(&hints, 0, sizeof(hints));
820  hints.ai_family = AF_INET;
821  int res = getaddrinfo("localhost", NULL, &hints, &ai);
822  ASSERT_EQ(0, res);
823  EXPECT_NOT_POISONED(*ai);
824  ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen);
825  EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr);
826}
827
828TEST(MemorySanitizer, getnameinfo) {
829  struct sockaddr_in sai;
830  sai.sin_family = AF_INET;
831  sai.sin_port = 80;
832  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
833  char host[500];
834  char serv[500];
835  int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host,
836                        sizeof(host), serv, sizeof(serv), 0);
837  ASSERT_EQ(0, res);
838  EXPECT_NOT_POISONED(host[0]);
839  EXPECT_POISONED(host[sizeof(host) - 1]);
840
841  ASSERT_NE(0, strlen(host));
842  EXPECT_NOT_POISONED(serv[0]);
843  EXPECT_POISONED(serv[sizeof(serv) - 1]);
844  ASSERT_NE(0, strlen(serv));
845}
846
847#define EXPECT_HOSTENT_NOT_POISONED(he)        \
848  do {                                         \
849    EXPECT_NOT_POISONED(*(he));                \
850    ASSERT_NE((void *) 0, (he)->h_name);       \
851    ASSERT_NE((void *) 0, (he)->h_aliases);    \
852    ASSERT_NE((void *) 0, (he)->h_addr_list);  \
853    EXPECT_NOT_POISONED(strlen((he)->h_name)); \
854    char **p = (he)->h_aliases;                \
855    while (*p) {                               \
856      EXPECT_NOT_POISONED(strlen(*p));         \
857      ++p;                                     \
858    }                                          \
859    char **q = (he)->h_addr_list;              \
860    while (*q) {                               \
861      EXPECT_NOT_POISONED(*q[0]);              \
862      ++q;                                     \
863    }                                          \
864    EXPECT_NOT_POISONED(*q);                   \
865  } while (0)
866
867TEST(MemorySanitizer, gethostent) {
868  struct hostent *he = gethostent();
869  ASSERT_NE((void *)NULL, he);
870  EXPECT_HOSTENT_NOT_POISONED(he);
871}
872
873#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME
874
875TEST(MemorySanitizer, gethostbyname) {
876  struct hostent *he = gethostbyname("localhost");
877  ASSERT_NE((void *)NULL, he);
878  EXPECT_HOSTENT_NOT_POISONED(he);
879}
880
881#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME
882
883TEST(MemorySanitizer, gethostbyname2) {
884  struct hostent *he = gethostbyname2("localhost", AF_INET);
885  ASSERT_NE((void *)NULL, he);
886  EXPECT_HOSTENT_NOT_POISONED(he);
887}
888
889TEST(MemorySanitizer, gethostbyaddr) {
890  in_addr_t addr = inet_addr("127.0.0.1");
891  EXPECT_NOT_POISONED(addr);
892  struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
893  ASSERT_NE((void *)NULL, he);
894  EXPECT_HOSTENT_NOT_POISONED(he);
895}
896
897TEST(MemorySanitizer, gethostent_r) {
898  char buf[2000];
899  struct hostent he;
900  struct hostent *result;
901  int err;
902  int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
903  ASSERT_EQ(0, res);
904  EXPECT_NOT_POISONED(result);
905  ASSERT_NE((void *)NULL, result);
906  EXPECT_HOSTENT_NOT_POISONED(result);
907  EXPECT_NOT_POISONED(err);
908}
909
910TEST(MemorySanitizer, gethostbyname_r) {
911  char buf[2000];
912  struct hostent he;
913  struct hostent *result;
914  int err;
915  int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
916  ASSERT_EQ(0, res);
917  EXPECT_NOT_POISONED(result);
918  ASSERT_NE((void *)NULL, result);
919  EXPECT_HOSTENT_NOT_POISONED(result);
920  EXPECT_NOT_POISONED(err);
921}
922
923TEST(MemorySanitizer, gethostbyname2_r) {
924  char buf[2000];
925  struct hostent he;
926  struct hostent *result;
927  int err;
928  int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
929                             &result, &err);
930  ASSERT_EQ(0, res);
931  EXPECT_NOT_POISONED(result);
932  ASSERT_NE((void *)NULL, result);
933  EXPECT_HOSTENT_NOT_POISONED(result);
934  EXPECT_NOT_POISONED(err);
935}
936
937TEST(MemorySanitizer, gethostbyaddr_r) {
938  char buf[2000];
939  struct hostent he;
940  struct hostent *result;
941  int err;
942  in_addr_t addr = inet_addr("127.0.0.1");
943  EXPECT_NOT_POISONED(addr);
944  int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
945                            &result, &err);
946  ASSERT_EQ(0, res);
947  EXPECT_NOT_POISONED(result);
948  ASSERT_NE((void *)NULL, result);
949  EXPECT_HOSTENT_NOT_POISONED(result);
950  EXPECT_NOT_POISONED(err);
951}
952
953TEST(MemorySanitizer, getsockopt) {
954  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
955  struct linger l[2];
956  socklen_t sz = sizeof(l[0]);
957  int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
958  ASSERT_EQ(0, res);
959  ASSERT_EQ(sizeof(l[0]), sz);
960  EXPECT_NOT_POISONED(l[0]);
961  EXPECT_POISONED(*(char *)(l + 1));
962}
963
964TEST(MemorySanitizer, getcwd) {
965  char path[PATH_MAX + 1];
966  char* res = getcwd(path, sizeof(path));
967  assert(res);
968  EXPECT_NOT_POISONED(path[0]);
969}
970
971TEST(MemorySanitizer, getcwd_gnu) {
972  char* res = getcwd(NULL, 0);
973  assert(res);
974  EXPECT_NOT_POISONED(res[0]);
975  free(res);
976}
977
978TEST(MemorySanitizer, get_current_dir_name) {
979  char* res = get_current_dir_name();
980  assert(res);
981  EXPECT_NOT_POISONED(res[0]);
982  free(res);
983}
984
985TEST(MemorySanitizer, confstr) {
986  char buf[3];
987  size_t res = confstr(_CS_PATH, buf, sizeof(buf));
988  ASSERT_GT(res, sizeof(buf));
989  EXPECT_NOT_POISONED(buf[0]);
990  EXPECT_NOT_POISONED(buf[sizeof(buf) - 1]);
991
992  char buf2[1000];
993  res = confstr(_CS_PATH, buf2, sizeof(buf2));
994  ASSERT_LT(res, sizeof(buf2));
995  EXPECT_NOT_POISONED(buf2[0]);
996  EXPECT_NOT_POISONED(buf2[res - 1]);
997  EXPECT_POISONED(buf2[res]);
998  ASSERT_EQ(res, strlen(buf2) + 1);
999}
1000
1001TEST(MemorySanitizer, readdir) {
1002  DIR *dir = opendir(".");
1003  struct dirent *d = readdir(dir);
1004  assert(d);
1005  EXPECT_NOT_POISONED(d->d_name[0]);
1006  closedir(dir);
1007}
1008
1009TEST(MemorySanitizer, readdir_r) {
1010  DIR *dir = opendir(".");
1011  struct dirent d;
1012  struct dirent *pd;
1013  int res = readdir_r(dir, &d, &pd);
1014  assert(!res);
1015  EXPECT_NOT_POISONED(pd);
1016  EXPECT_NOT_POISONED(d.d_name[0]);
1017  closedir(dir);
1018}
1019
1020TEST(MemorySanitizer, realpath) {
1021  const char* relpath = ".";
1022  char path[PATH_MAX + 1];
1023  char* res = realpath(relpath, path);
1024  assert(res);
1025  EXPECT_NOT_POISONED(path[0]);
1026}
1027
1028TEST(MemorySanitizer, realpath_null) {
1029  const char* relpath = ".";
1030  char* res = realpath(relpath, NULL);
1031  printf("%d, %s\n", errno, strerror(errno));
1032  assert(res);
1033  EXPECT_NOT_POISONED(res[0]);
1034  free(res);
1035}
1036
1037TEST(MemorySanitizer, canonicalize_file_name) {
1038  const char* relpath = ".";
1039  char* res = canonicalize_file_name(relpath);
1040  assert(res);
1041  EXPECT_NOT_POISONED(res[0]);
1042  free(res);
1043}
1044
1045extern char **environ;
1046
1047TEST(MemorySanitizer, setenv) {
1048  setenv("AAA", "BBB", 1);
1049  for (char **envp = environ; *envp; ++envp) {
1050    EXPECT_NOT_POISONED(*envp);
1051    EXPECT_NOT_POISONED(*envp[0]);
1052  }
1053}
1054
1055TEST(MemorySanitizer, putenv) {
1056  char s[] = "AAA=BBB";
1057  putenv(s);
1058  for (char **envp = environ; *envp; ++envp) {
1059    EXPECT_NOT_POISONED(*envp);
1060    EXPECT_NOT_POISONED(*envp[0]);
1061  }
1062}
1063
1064TEST(MemorySanitizer, memcpy) {
1065  char* x = new char[2];
1066  char* y = new char[2];
1067  x[0] = 1;
1068  x[1] = *GetPoisoned<char>();
1069  memcpy(y, x, 2);
1070  EXPECT_NOT_POISONED(y[0]);
1071  EXPECT_POISONED(y[1]);
1072}
1073
1074TEST(MemorySanitizer, memmove) {
1075  char* x = new char[2];
1076  char* y = new char[2];
1077  x[0] = 1;
1078  x[1] = *GetPoisoned<char>();
1079  memmove(y, x, 2);
1080  EXPECT_NOT_POISONED(y[0]);
1081  EXPECT_POISONED(y[1]);
1082}
1083
1084TEST(MemorySanitizer, bcopy) {
1085  char* x = new char[2];
1086  char* y = new char[2];
1087  x[0] = 1;
1088  x[1] = *GetPoisoned<char>();
1089  bcopy(x, y, 2);
1090  EXPECT_NOT_POISONED(y[0]);
1091  EXPECT_POISONED(y[1]);
1092}
1093
1094TEST(MemorySanitizer, strdup) {
1095  char buf[4] = "abc";
1096  __msan_poison(buf + 2, sizeof(*buf));
1097  char *x = strdup(buf);
1098  EXPECT_NOT_POISONED(x[0]);
1099  EXPECT_NOT_POISONED(x[1]);
1100  EXPECT_POISONED(x[2]);
1101  EXPECT_NOT_POISONED(x[3]);
1102  free(x);
1103}
1104
1105TEST(MemorySanitizer, strndup) {
1106  char buf[4] = "abc";
1107  __msan_poison(buf + 2, sizeof(*buf));
1108  char *x = strndup(buf, 3);
1109  EXPECT_NOT_POISONED(x[0]);
1110  EXPECT_NOT_POISONED(x[1]);
1111  EXPECT_POISONED(x[2]);
1112  EXPECT_NOT_POISONED(x[3]);
1113  free(x);
1114}
1115
1116TEST(MemorySanitizer, strndup_short) {
1117  char buf[4] = "abc";
1118  __msan_poison(buf + 1, sizeof(*buf));
1119  __msan_poison(buf + 2, sizeof(*buf));
1120  char *x = strndup(buf, 2);
1121  EXPECT_NOT_POISONED(x[0]);
1122  EXPECT_POISONED(x[1]);
1123  EXPECT_NOT_POISONED(x[2]);
1124  free(x);
1125}
1126
1127
1128template<class T, int size>
1129void TestOverlapMemmove() {
1130  T *x = new T[size];
1131  assert(size >= 3);
1132  x[2] = 0;
1133  memmove(x, x + 1, (size - 1) * sizeof(T));
1134  EXPECT_NOT_POISONED(x[1]);
1135  if (!__msan_has_dynamic_component()) {
1136    // FIXME: under DR we will lose this information
1137    // because accesses in memmove will unpoisin the shadow.
1138    // We need to use our own memove implementation instead of libc's.
1139    EXPECT_POISONED(x[0]);
1140    EXPECT_POISONED(x[2]);
1141  }
1142  delete [] x;
1143}
1144
1145TEST(MemorySanitizer, overlap_memmove) {
1146  TestOverlapMemmove<U1, 10>();
1147  TestOverlapMemmove<U1, 1000>();
1148  TestOverlapMemmove<U8, 4>();
1149  TestOverlapMemmove<U8, 1000>();
1150}
1151
1152TEST(MemorySanitizer, strcpy) {  // NOLINT
1153  char* x = new char[3];
1154  char* y = new char[3];
1155  x[0] = 'a';
1156  x[1] = *GetPoisoned<char>(1, 1);
1157  x[2] = 0;
1158  strcpy(y, x);  // NOLINT
1159  EXPECT_NOT_POISONED(y[0]);
1160  EXPECT_POISONED(y[1]);
1161  EXPECT_NOT_POISONED(y[2]);
1162}
1163
1164TEST(MemorySanitizer, strncpy) {  // NOLINT
1165  char* x = new char[3];
1166  char* y = new char[3];
1167  x[0] = 'a';
1168  x[1] = *GetPoisoned<char>(1, 1);
1169  x[2] = 0;
1170  strncpy(y, x, 2);  // NOLINT
1171  EXPECT_NOT_POISONED(y[0]);
1172  EXPECT_POISONED(y[1]);
1173  EXPECT_POISONED(y[2]);
1174}
1175
1176TEST(MemorySanitizer, stpcpy) {  // NOLINT
1177  char* x = new char[3];
1178  char* y = new char[3];
1179  x[0] = 'a';
1180  x[1] = *GetPoisoned<char>(1, 1);
1181  x[2] = 0;
1182  char *res = stpcpy(y, x);  // NOLINT
1183  ASSERT_EQ(res, y + 2);
1184  EXPECT_NOT_POISONED(y[0]);
1185  EXPECT_POISONED(y[1]);
1186  EXPECT_NOT_POISONED(y[2]);
1187}
1188
1189TEST(MemorySanitizer, strtol) {
1190  char *e;
1191  assert(1 == strtol("1", &e, 10));
1192  EXPECT_NOT_POISONED((S8) e);
1193}
1194
1195TEST(MemorySanitizer, strtoll) {
1196  char *e;
1197  assert(1 == strtoll("1", &e, 10));
1198  EXPECT_NOT_POISONED((S8) e);
1199}
1200
1201TEST(MemorySanitizer, strtoul) {
1202  char *e;
1203  assert(1 == strtoul("1", &e, 10));
1204  EXPECT_NOT_POISONED((S8) e);
1205}
1206
1207TEST(MemorySanitizer, strtoull) {
1208  char *e;
1209  assert(1 == strtoull("1", &e, 10));
1210  EXPECT_NOT_POISONED((S8) e);
1211}
1212
1213TEST(MemorySanitizer, strtoimax) {
1214  char *e;
1215  assert(1 == strtoimax("1", &e, 10));
1216  EXPECT_NOT_POISONED((S8) e);
1217}
1218
1219TEST(MemorySanitizer, strtoumax) {
1220  char *e;
1221  assert(1 == strtoumax("1", &e, 10));
1222  EXPECT_NOT_POISONED((S8) e);
1223}
1224
1225TEST(MemorySanitizer, strtod) {
1226  char *e;
1227  assert(0 != strtod("1.5", &e));
1228  EXPECT_NOT_POISONED((S8) e);
1229}
1230
1231TEST(MemorySanitizer, strtof) {
1232  char *e;
1233  assert(0 != strtof("1.5", &e));
1234  EXPECT_NOT_POISONED((S8) e);
1235}
1236
1237TEST(MemorySanitizer, strtold) {
1238  char *e;
1239  assert(0 != strtold("1.5", &e));
1240  EXPECT_NOT_POISONED((S8) e);
1241}
1242
1243TEST(MemorySanitizer, modf) {
1244  double x, y;
1245  x = modf(2.1, &y);
1246  EXPECT_NOT_POISONED(y);
1247}
1248
1249TEST(MemorySanitizer, modff) {
1250  float x, y;
1251  x = modff(2.1, &y);
1252  EXPECT_NOT_POISONED(y);
1253}
1254
1255TEST(MemorySanitizer, modfl) {
1256  long double x, y;
1257  x = modfl(2.1, &y);
1258  EXPECT_NOT_POISONED(y);
1259}
1260
1261TEST(MemorySanitizer, sprintf) {  // NOLINT
1262  char buff[10];
1263  break_optimization(buff);
1264  EXPECT_POISONED(buff[0]);
1265  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1266  assert(res == 7);
1267  assert(buff[0] == '1');
1268  assert(buff[1] == '2');
1269  assert(buff[2] == '3');
1270  assert(buff[6] == '7');
1271  assert(buff[7] == 0);
1272  EXPECT_POISONED(buff[8]);
1273}
1274
1275TEST(MemorySanitizer, snprintf) {
1276  char buff[10];
1277  break_optimization(buff);
1278  EXPECT_POISONED(buff[0]);
1279  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1280  assert(res == 7);
1281  assert(buff[0] == '1');
1282  assert(buff[1] == '2');
1283  assert(buff[2] == '3');
1284  assert(buff[6] == '7');
1285  assert(buff[7] == 0);
1286  EXPECT_POISONED(buff[8]);
1287}
1288
1289TEST(MemorySanitizer, swprintf) {
1290  wchar_t buff[10];
1291  assert(sizeof(wchar_t) == 4);
1292  break_optimization(buff);
1293  EXPECT_POISONED(buff[0]);
1294  int res = swprintf(buff, 9, L"%d", 1234567);
1295  assert(res == 7);
1296  assert(buff[0] == '1');
1297  assert(buff[1] == '2');
1298  assert(buff[2] == '3');
1299  assert(buff[6] == '7');
1300  assert(buff[7] == 0);
1301  EXPECT_POISONED(buff[8]);
1302}
1303
1304TEST(MemorySanitizer, asprintf) {  // NOLINT
1305  char *pbuf;
1306  EXPECT_POISONED(pbuf);
1307  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1308  assert(res == 7);
1309  EXPECT_NOT_POISONED(pbuf);
1310  assert(pbuf[0] == '1');
1311  assert(pbuf[1] == '2');
1312  assert(pbuf[2] == '3');
1313  assert(pbuf[6] == '7');
1314  assert(pbuf[7] == 0);
1315  free(pbuf);
1316}
1317
1318TEST(MemorySanitizer, mbstowcs) {
1319  const char *x = "abc";
1320  wchar_t buff[10];
1321  int res = mbstowcs(buff, x, 2);
1322  EXPECT_EQ(2, res);
1323  EXPECT_EQ(L'a', buff[0]);
1324  EXPECT_EQ(L'b', buff[1]);
1325  EXPECT_POISONED(buff[2]);
1326  res = mbstowcs(buff, x, 10);
1327  EXPECT_EQ(3, res);
1328  EXPECT_NOT_POISONED(buff[3]);
1329}
1330
1331TEST(MemorySanitizer, wcstombs) {
1332  const wchar_t *x = L"abc";
1333  char buff[10];
1334  int res = wcstombs(buff, x, 4);
1335  EXPECT_EQ(res, 3);
1336  EXPECT_EQ(buff[0], 'a');
1337  EXPECT_EQ(buff[1], 'b');
1338  EXPECT_EQ(buff[2], 'c');
1339}
1340
1341TEST(MemorySanitizer, wcsrtombs) {
1342  const wchar_t *x = L"abc";
1343  const wchar_t *p = x;
1344  char buff[10];
1345  mbstate_t mbs;
1346  memset(&mbs, 0, sizeof(mbs));
1347  int res = wcsrtombs(buff, &p, 4, &mbs);
1348  EXPECT_EQ(res, 3);
1349  EXPECT_EQ(buff[0], 'a');
1350  EXPECT_EQ(buff[1], 'b');
1351  EXPECT_EQ(buff[2], 'c');
1352  EXPECT_EQ(buff[3], '\0');
1353  EXPECT_POISONED(buff[4]);
1354}
1355
1356TEST(MemorySanitizer, wcsnrtombs) {
1357  const wchar_t *x = L"abc";
1358  const wchar_t *p = x;
1359  char buff[10];
1360  mbstate_t mbs;
1361  memset(&mbs, 0, sizeof(mbs));
1362  int res = wcsnrtombs(buff, &p, 2, 4, &mbs);
1363  EXPECT_EQ(res, 2);
1364  EXPECT_EQ(buff[0], 'a');
1365  EXPECT_EQ(buff[1], 'b');
1366  EXPECT_POISONED(buff[2]);
1367}
1368
1369TEST(MemorySanitizer, mbtowc) {
1370  const char *x = "abc";
1371  wchar_t wx;
1372  int res = mbtowc(&wx, x, 3);
1373  EXPECT_GT(res, 0);
1374  EXPECT_NOT_POISONED(wx);
1375}
1376
1377TEST(MemorySanitizer, mbrtowc) {
1378  const char *x = "abc";
1379  wchar_t wx;
1380  mbstate_t mbs;
1381  memset(&mbs, 0, sizeof(mbs));
1382  int res = mbrtowc(&wx, x, 3, &mbs);
1383  EXPECT_GT(res, 0);
1384  EXPECT_NOT_POISONED(wx);
1385}
1386
1387TEST(MemorySanitizer, gettimeofday) {
1388  struct timeval tv;
1389  struct timezone tz;
1390  break_optimization(&tv);
1391  break_optimization(&tz);
1392  assert(sizeof(tv) == 16);
1393  assert(sizeof(tz) == 8);
1394  EXPECT_POISONED(tv.tv_sec);
1395  EXPECT_POISONED(tv.tv_usec);
1396  EXPECT_POISONED(tz.tz_minuteswest);
1397  EXPECT_POISONED(tz.tz_dsttime);
1398  assert(0 == gettimeofday(&tv, &tz));
1399  EXPECT_NOT_POISONED(tv.tv_sec);
1400  EXPECT_NOT_POISONED(tv.tv_usec);
1401  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1402  EXPECT_NOT_POISONED(tz.tz_dsttime);
1403}
1404
1405TEST(MemorySanitizer, clock_gettime) {
1406  struct timespec tp;
1407  EXPECT_POISONED(tp.tv_sec);
1408  EXPECT_POISONED(tp.tv_nsec);
1409  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1410  EXPECT_NOT_POISONED(tp.tv_sec);
1411  EXPECT_NOT_POISONED(tp.tv_nsec);
1412}
1413
1414TEST(MemorySanitizer, clock_getres) {
1415  struct timespec tp;
1416  EXPECT_POISONED(tp.tv_sec);
1417  EXPECT_POISONED(tp.tv_nsec);
1418  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1419  EXPECT_POISONED(tp.tv_sec);
1420  EXPECT_POISONED(tp.tv_nsec);
1421  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1422  EXPECT_NOT_POISONED(tp.tv_sec);
1423  EXPECT_NOT_POISONED(tp.tv_nsec);
1424}
1425
1426TEST(MemorySanitizer, getitimer) {
1427  struct itimerval it1, it2;
1428  int res;
1429  EXPECT_POISONED(it1.it_interval.tv_sec);
1430  EXPECT_POISONED(it1.it_interval.tv_usec);
1431  EXPECT_POISONED(it1.it_value.tv_sec);
1432  EXPECT_POISONED(it1.it_value.tv_usec);
1433  res = getitimer(ITIMER_VIRTUAL, &it1);
1434  assert(!res);
1435  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1436  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1437  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1438  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1439
1440  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1441  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1442
1443  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1444  assert(!res);
1445  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1446  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1447  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1448  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1449
1450  // Check that old_value can be 0, and disable the timer.
1451  memset(&it1, 0, sizeof(it1));
1452  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1453  assert(!res);
1454}
1455
1456TEST(MemorySanitizer, setitimer_null) {
1457  setitimer(ITIMER_VIRTUAL, 0, 0);
1458  // Not testing the return value, since it the behaviour seems to differ
1459  // between libc implementations and POSIX.
1460  // Should never crash, though.
1461}
1462
1463TEST(MemorySanitizer, time) {
1464  time_t t;
1465  EXPECT_POISONED(t);
1466  time_t t2 = time(&t);
1467  assert(t2 != (time_t)-1);
1468  EXPECT_NOT_POISONED(t);
1469}
1470
1471TEST(MemorySanitizer, localtime) {
1472  time_t t = 123;
1473  struct tm *time = localtime(&t);
1474  assert(time != 0);
1475  EXPECT_NOT_POISONED(time->tm_sec);
1476  EXPECT_NOT_POISONED(time->tm_hour);
1477  EXPECT_NOT_POISONED(time->tm_year);
1478  EXPECT_NOT_POISONED(time->tm_isdst);
1479}
1480
1481TEST(MemorySanitizer, localtime_r) {
1482  time_t t = 123;
1483  struct tm time;
1484  struct tm *res = localtime_r(&t, &time);
1485  assert(res != 0);
1486  EXPECT_NOT_POISONED(time.tm_sec);
1487  EXPECT_NOT_POISONED(time.tm_hour);
1488  EXPECT_NOT_POISONED(time.tm_year);
1489  EXPECT_NOT_POISONED(time.tm_isdst);
1490}
1491
1492TEST(MemorySanitizer, mmap) {
1493  const int size = 4096;
1494  void *p1, *p2;
1495  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1496  __msan_poison(p1, size);
1497  munmap(p1, size);
1498  for (int i = 0; i < 1000; i++) {
1499    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1500    if (p2 == p1)
1501      break;
1502    else
1503      munmap(p2, size);
1504  }
1505  if (p1 == p2) {
1506    EXPECT_NOT_POISONED(*(char*)p2);
1507    munmap(p2, size);
1508  }
1509}
1510
1511// FIXME: enable and add ecvt.
1512// FIXME: check why msandr does nt handle fcvt.
1513TEST(MemorySanitizer, fcvt) {
1514  int a, b;
1515  break_optimization(&a);
1516  break_optimization(&b);
1517  EXPECT_POISONED(a);
1518  EXPECT_POISONED(b);
1519  char *str = fcvt(12345.6789, 10, &a, &b);
1520  EXPECT_NOT_POISONED(a);
1521  EXPECT_NOT_POISONED(b);
1522}
1523
1524TEST(MemorySanitizer, frexp) {
1525  int x;
1526  x = *GetPoisoned<int>();
1527  double r = frexp(1.1, &x);
1528  EXPECT_NOT_POISONED(r);
1529  EXPECT_NOT_POISONED(x);
1530
1531  x = *GetPoisoned<int>();
1532  float rf = frexpf(1.1, &x);
1533  EXPECT_NOT_POISONED(rf);
1534  EXPECT_NOT_POISONED(x);
1535
1536  x = *GetPoisoned<int>();
1537  double rl = frexpl(1.1, &x);
1538  EXPECT_NOT_POISONED(rl);
1539  EXPECT_NOT_POISONED(x);
1540}
1541
1542namespace {
1543
1544static int cnt;
1545
1546void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1547  assert(signo == SIGPROF);
1548  assert(si);
1549  EXPECT_NOT_POISONED(si->si_errno);
1550  EXPECT_NOT_POISONED(si->si_pid);
1551#if __linux__
1552# if defined(__x86_64__)
1553  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1554# elif defined(__i386__)
1555  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1556# endif
1557#endif
1558  ++cnt;
1559}
1560
1561TEST(MemorySanitizer, sigaction) {
1562  struct sigaction act = {};
1563  struct sigaction oldact = {};
1564  struct sigaction origact = {};
1565
1566  sigaction(SIGPROF, 0, &origact);
1567
1568  act.sa_flags |= SA_SIGINFO;
1569  act.sa_sigaction = &SigactionHandler;
1570  sigaction(SIGPROF, &act, 0);
1571
1572  kill(getpid(), SIGPROF);
1573
1574  act.sa_flags &= ~SA_SIGINFO;
1575  act.sa_handler = SIG_DFL;
1576  sigaction(SIGPROF, &act, 0);
1577
1578  act.sa_flags &= ~SA_SIGINFO;
1579  act.sa_handler = SIG_IGN;
1580  sigaction(SIGPROF, &act, &oldact);
1581  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1582  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1583  kill(getpid(), SIGPROF);
1584
1585  act.sa_flags |= SA_SIGINFO;
1586  act.sa_sigaction = &SigactionHandler;
1587  sigaction(SIGPROF, &act, &oldact);
1588  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1589  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1590  kill(getpid(), SIGPROF);
1591
1592  act.sa_flags &= ~SA_SIGINFO;
1593  act.sa_handler = SIG_DFL;
1594  sigaction(SIGPROF, &act, &oldact);
1595  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1596  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1597  EXPECT_EQ(2, cnt);
1598
1599  sigaction(SIGPROF, &origact, 0);
1600}
1601
1602} // namespace
1603
1604struct StructWithDtor {
1605  ~StructWithDtor();
1606};
1607
1608NOINLINE StructWithDtor::~StructWithDtor() {
1609  break_optimization(0);
1610}
1611
1612TEST(MemorySanitizer, Invoke) {
1613  StructWithDtor s;  // Will cause the calls to become invokes.
1614  EXPECT_NOT_POISONED(0);
1615  EXPECT_POISONED(*GetPoisoned<int>());
1616  EXPECT_NOT_POISONED(0);
1617  EXPECT_POISONED(*GetPoisoned<int>());
1618  EXPECT_POISONED(ReturnPoisoned<S4>());
1619}
1620
1621TEST(MemorySanitizer, ptrtoint) {
1622  // Test that shadow is propagated through pointer-to-integer conversion.
1623  void* p = (void*)0xABCD;
1624  __msan_poison(((char*)&p) + 1, sizeof(p));
1625  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1626
1627  void* q = (void*)0xABCD;
1628  __msan_poison(&q, sizeof(q) - 1);
1629  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1630}
1631
1632static void vaargsfn2(int guard, ...) {
1633  va_list vl;
1634  va_start(vl, guard);
1635  EXPECT_NOT_POISONED(va_arg(vl, int));
1636  EXPECT_NOT_POISONED(va_arg(vl, int));
1637  EXPECT_NOT_POISONED(va_arg(vl, int));
1638  EXPECT_POISONED(va_arg(vl, double));
1639  va_end(vl);
1640}
1641
1642static void vaargsfn(int guard, ...) {
1643  va_list vl;
1644  va_start(vl, guard);
1645  EXPECT_NOT_POISONED(va_arg(vl, int));
1646  EXPECT_POISONED(va_arg(vl, int));
1647  // The following call will overwrite __msan_param_tls.
1648  // Checks after it test that arg shadow was somehow saved across the call.
1649  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1650  EXPECT_NOT_POISONED(va_arg(vl, int));
1651  EXPECT_POISONED(va_arg(vl, int));
1652  va_end(vl);
1653}
1654
1655TEST(MemorySanitizer, VAArgTest) {
1656  int* x = GetPoisoned<int>();
1657  int* y = GetPoisoned<int>(4);
1658  vaargsfn(1, 13, *x, 42, *y);
1659}
1660
1661static void vaargsfn_many(int guard, ...) {
1662  va_list vl;
1663  va_start(vl, guard);
1664  EXPECT_NOT_POISONED(va_arg(vl, int));
1665  EXPECT_POISONED(va_arg(vl, int));
1666  EXPECT_NOT_POISONED(va_arg(vl, int));
1667  EXPECT_NOT_POISONED(va_arg(vl, int));
1668  EXPECT_NOT_POISONED(va_arg(vl, int));
1669  EXPECT_NOT_POISONED(va_arg(vl, int));
1670  EXPECT_NOT_POISONED(va_arg(vl, int));
1671  EXPECT_NOT_POISONED(va_arg(vl, int));
1672  EXPECT_NOT_POISONED(va_arg(vl, int));
1673  EXPECT_POISONED(va_arg(vl, int));
1674  va_end(vl);
1675}
1676
1677TEST(MemorySanitizer, VAArgManyTest) {
1678  int* x = GetPoisoned<int>();
1679  int* y = GetPoisoned<int>(4);
1680  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1681}
1682
1683static void vaargsfn_pass2(va_list vl) {
1684  EXPECT_NOT_POISONED(va_arg(vl, int));
1685  EXPECT_NOT_POISONED(va_arg(vl, int));
1686  EXPECT_POISONED(va_arg(vl, int));
1687}
1688
1689static void vaargsfn_pass(int guard, ...) {
1690  va_list vl;
1691  va_start(vl, guard);
1692  EXPECT_POISONED(va_arg(vl, int));
1693  vaargsfn_pass2(vl);
1694  va_end(vl);
1695}
1696
1697TEST(MemorySanitizer, VAArgPass) {
1698  int* x = GetPoisoned<int>();
1699  int* y = GetPoisoned<int>(4);
1700  vaargsfn_pass(1, *x, 2, 3, *y);
1701}
1702
1703static void vaargsfn_copy2(va_list vl) {
1704  EXPECT_NOT_POISONED(va_arg(vl, int));
1705  EXPECT_POISONED(va_arg(vl, int));
1706}
1707
1708static void vaargsfn_copy(int guard, ...) {
1709  va_list vl;
1710  va_start(vl, guard);
1711  EXPECT_NOT_POISONED(va_arg(vl, int));
1712  EXPECT_POISONED(va_arg(vl, int));
1713  va_list vl2;
1714  va_copy(vl2, vl);
1715  vaargsfn_copy2(vl2);
1716  EXPECT_NOT_POISONED(va_arg(vl, int));
1717  EXPECT_POISONED(va_arg(vl, int));
1718  va_end(vl);
1719}
1720
1721TEST(MemorySanitizer, VAArgCopy) {
1722  int* x = GetPoisoned<int>();
1723  int* y = GetPoisoned<int>(4);
1724  vaargsfn_copy(1, 2, *x, 3, *y);
1725}
1726
1727static void vaargsfn_ptr(int guard, ...) {
1728  va_list vl;
1729  va_start(vl, guard);
1730  EXPECT_NOT_POISONED(va_arg(vl, int*));
1731  EXPECT_POISONED(va_arg(vl, int*));
1732  EXPECT_NOT_POISONED(va_arg(vl, int*));
1733  EXPECT_POISONED(va_arg(vl, double*));
1734  va_end(vl);
1735}
1736
1737TEST(MemorySanitizer, VAArgPtr) {
1738  int** x = GetPoisoned<int*>();
1739  double** y = GetPoisoned<double*>(8);
1740  int z;
1741  vaargsfn_ptr(1, &z, *x, &z, *y);
1742}
1743
1744static void vaargsfn_overflow(int guard, ...) {
1745  va_list vl;
1746  va_start(vl, guard);
1747  EXPECT_NOT_POISONED(va_arg(vl, int));
1748  EXPECT_NOT_POISONED(va_arg(vl, int));
1749  EXPECT_POISONED(va_arg(vl, int));
1750  EXPECT_NOT_POISONED(va_arg(vl, int));
1751  EXPECT_NOT_POISONED(va_arg(vl, int));
1752  EXPECT_NOT_POISONED(va_arg(vl, int));
1753
1754  EXPECT_NOT_POISONED(va_arg(vl, double));
1755  EXPECT_NOT_POISONED(va_arg(vl, double));
1756  EXPECT_NOT_POISONED(va_arg(vl, double));
1757  EXPECT_POISONED(va_arg(vl, double));
1758  EXPECT_NOT_POISONED(va_arg(vl, double));
1759  EXPECT_POISONED(va_arg(vl, int*));
1760  EXPECT_NOT_POISONED(va_arg(vl, double));
1761  EXPECT_NOT_POISONED(va_arg(vl, double));
1762
1763  EXPECT_POISONED(va_arg(vl, int));
1764  EXPECT_POISONED(va_arg(vl, double));
1765  EXPECT_POISONED(va_arg(vl, int*));
1766
1767  EXPECT_NOT_POISONED(va_arg(vl, int));
1768  EXPECT_NOT_POISONED(va_arg(vl, double));
1769  EXPECT_NOT_POISONED(va_arg(vl, int*));
1770
1771  EXPECT_POISONED(va_arg(vl, int));
1772  EXPECT_POISONED(va_arg(vl, double));
1773  EXPECT_POISONED(va_arg(vl, int*));
1774
1775  va_end(vl);
1776}
1777
1778TEST(MemorySanitizer, VAArgOverflow) {
1779  int* x = GetPoisoned<int>();
1780  double* y = GetPoisoned<double>(8);
1781  int** p = GetPoisoned<int*>(16);
1782  int z;
1783  vaargsfn_overflow(1,
1784      1, 2, *x, 4, 5, 6,
1785      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1786      // the following args will overflow for sure
1787      *x, *y, *p,
1788      7, 9.9, &z,
1789      *x, *y, *p);
1790}
1791
1792static void vaargsfn_tlsoverwrite2(int guard, ...) {
1793  va_list vl;
1794  va_start(vl, guard);
1795  EXPECT_NOT_POISONED(va_arg(vl, int));
1796  va_end(vl);
1797}
1798
1799static void vaargsfn_tlsoverwrite(int guard, ...) {
1800  // This call will overwrite TLS contents unless it's backed up somewhere.
1801  vaargsfn_tlsoverwrite2(2, 42);
1802  va_list vl;
1803  va_start(vl, guard);
1804  EXPECT_POISONED(va_arg(vl, int));
1805  va_end(vl);
1806}
1807
1808TEST(MemorySanitizer, VAArgTLSOverwrite) {
1809  int* x = GetPoisoned<int>();
1810  vaargsfn_tlsoverwrite(1, *x);
1811}
1812
1813struct StructByVal {
1814  int a, b, c, d, e, f;
1815};
1816
1817NOINLINE void StructByValTestFunc(struct StructByVal s) {
1818  EXPECT_NOT_POISONED(s.a);
1819  EXPECT_POISONED(s.b);
1820  EXPECT_NOT_POISONED(s.c);
1821  EXPECT_POISONED(s.d);
1822  EXPECT_NOT_POISONED(s.e);
1823  EXPECT_POISONED(s.f);
1824}
1825
1826NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1827  StructByValTestFunc(s);
1828}
1829
1830NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1831  StructByValTestFunc(s);
1832}
1833
1834TEST(MemorySanitizer, StructByVal) {
1835  // Large aggregates are passed as "byval" pointer argument in LLVM.
1836  struct StructByVal s;
1837  s.a = 1;
1838  s.b = *GetPoisoned<int>();
1839  s.c = 2;
1840  s.d = *GetPoisoned<int>();
1841  s.e = 3;
1842  s.f = *GetPoisoned<int>();
1843  StructByValTestFunc(s);
1844  StructByValTestFunc1(s);
1845  StructByValTestFunc2(0, s);
1846}
1847
1848
1849#if MSAN_HAS_M128
1850NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1851NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1852TEST(MemorySanitizer, m128) {
1853  __m128i a = _mm_set1_epi16(0x1234);
1854  __m128i b = _mm_set1_epi16(0x7890);
1855  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1856  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1857}
1858// FIXME: add more tests for __m128i.
1859#endif  // MSAN_HAS_M128
1860
1861// We should not complain when copying this poisoned hole.
1862struct StructWithHole {
1863  U4  a;
1864  // 4-byte hole.
1865  U8  b;
1866};
1867
1868NOINLINE StructWithHole ReturnStructWithHole() {
1869  StructWithHole res;
1870  __msan_poison(&res, sizeof(res));
1871  res.a = 1;
1872  res.b = 2;
1873  return res;
1874}
1875
1876TEST(MemorySanitizer, StructWithHole) {
1877  StructWithHole a = ReturnStructWithHole();
1878  break_optimization(&a);
1879}
1880
1881template <class T>
1882NOINLINE T ReturnStruct() {
1883  T res;
1884  __msan_poison(&res, sizeof(res));
1885  res.a = 1;
1886  return res;
1887}
1888
1889template <class T>
1890NOINLINE void TestReturnStruct() {
1891  T s1 = ReturnStruct<T>();
1892  EXPECT_NOT_POISONED(s1.a);
1893  EXPECT_POISONED(s1.b);
1894}
1895
1896struct SSS1 {
1897  int a, b, c;
1898};
1899struct SSS2 {
1900  int b, a, c;
1901};
1902struct SSS3 {
1903  int b, c, a;
1904};
1905struct SSS4 {
1906  int c, b, a;
1907};
1908
1909struct SSS5 {
1910  int a;
1911  float b;
1912};
1913struct SSS6 {
1914  int a;
1915  double b;
1916};
1917struct SSS7 {
1918  S8 b;
1919  int a;
1920};
1921struct SSS8 {
1922  S2 b;
1923  S8 a;
1924};
1925
1926TEST(MemorySanitizer, IntStruct3) {
1927  TestReturnStruct<SSS1>();
1928  TestReturnStruct<SSS2>();
1929  TestReturnStruct<SSS3>();
1930  TestReturnStruct<SSS4>();
1931  TestReturnStruct<SSS5>();
1932  TestReturnStruct<SSS6>();
1933  TestReturnStruct<SSS7>();
1934  TestReturnStruct<SSS8>();
1935}
1936
1937struct LongStruct {
1938  U1 a1, b1;
1939  U2 a2, b2;
1940  U4 a4, b4;
1941  U8 a8, b8;
1942};
1943
1944NOINLINE LongStruct ReturnLongStruct1() {
1945  LongStruct res;
1946  __msan_poison(&res, sizeof(res));
1947  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1948  // leaves b1, .., b8 poisoned.
1949  return res;
1950}
1951
1952NOINLINE LongStruct ReturnLongStruct2() {
1953  LongStruct res;
1954  __msan_poison(&res, sizeof(res));
1955  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1956  // leaves a1, .., a8 poisoned.
1957  return res;
1958}
1959
1960TEST(MemorySanitizer, LongStruct) {
1961  LongStruct s1 = ReturnLongStruct1();
1962  __msan_print_shadow(&s1, sizeof(s1));
1963  EXPECT_NOT_POISONED(s1.a1);
1964  EXPECT_NOT_POISONED(s1.a2);
1965  EXPECT_NOT_POISONED(s1.a4);
1966  EXPECT_NOT_POISONED(s1.a8);
1967
1968  EXPECT_POISONED(s1.b1);
1969  EXPECT_POISONED(s1.b2);
1970  EXPECT_POISONED(s1.b4);
1971  EXPECT_POISONED(s1.b8);
1972
1973  LongStruct s2 = ReturnLongStruct2();
1974  __msan_print_shadow(&s2, sizeof(s2));
1975  EXPECT_NOT_POISONED(s2.b1);
1976  EXPECT_NOT_POISONED(s2.b2);
1977  EXPECT_NOT_POISONED(s2.b4);
1978  EXPECT_NOT_POISONED(s2.b8);
1979
1980  EXPECT_POISONED(s2.a1);
1981  EXPECT_POISONED(s2.a2);
1982  EXPECT_POISONED(s2.a4);
1983  EXPECT_POISONED(s2.a8);
1984}
1985
1986TEST(MemorySanitizer, getrlimit) {
1987  struct rlimit limit;
1988  __msan_poison(&limit, sizeof(limit));
1989  int result = getrlimit(RLIMIT_DATA, &limit);
1990  assert(result == 0);
1991  EXPECT_NOT_POISONED(limit.rlim_cur);
1992  EXPECT_NOT_POISONED(limit.rlim_max);
1993}
1994
1995TEST(MemorySanitizer, getrusage) {
1996  struct rusage usage;
1997  __msan_poison(&usage, sizeof(usage));
1998  int result = getrusage(RUSAGE_SELF, &usage);
1999  assert(result == 0);
2000  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
2001  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
2002  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
2003  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
2004  EXPECT_NOT_POISONED(usage.ru_maxrss);
2005  EXPECT_NOT_POISONED(usage.ru_minflt);
2006  EXPECT_NOT_POISONED(usage.ru_majflt);
2007  EXPECT_NOT_POISONED(usage.ru_inblock);
2008  EXPECT_NOT_POISONED(usage.ru_oublock);
2009  EXPECT_NOT_POISONED(usage.ru_nvcsw);
2010  EXPECT_NOT_POISONED(usage.ru_nivcsw);
2011}
2012
2013#ifdef __GLIBC__
2014extern char *program_invocation_name;
2015#else  // __GLIBC__
2016# error "TODO: port this"
2017#endif
2018
2019static void dladdr_testfn() {}
2020
2021TEST(MemorySanitizer, dladdr) {
2022  Dl_info info;
2023  __msan_poison(&info, sizeof(info));
2024  int result = dladdr((const void*)dladdr_testfn, &info);
2025  assert(result != 0);
2026  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
2027  if (info.dli_fname)
2028    EXPECT_NOT_POISONED(strlen(info.dli_fname));
2029  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
2030  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
2031  if (info.dli_sname)
2032    EXPECT_NOT_POISONED(strlen(info.dli_sname));
2033  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
2034}
2035
2036#ifndef MSAN_TEST_DISABLE_DLOPEN
2037
2038static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
2039  (*(int *)data)++;
2040  EXPECT_NOT_POISONED(info->dlpi_addr);
2041  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
2042  EXPECT_NOT_POISONED(info->dlpi_phnum);
2043  for (int i = 0; i < info->dlpi_phnum; ++i)
2044    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
2045  return 0;
2046}
2047
2048// Compute the path to our loadable DSO.  We assume it's in the same
2049// directory.  Only use string routines that we intercept so far to do this.
2050static int PathToLoadable(char *buf, size_t sz) {
2051  const char *basename = "libmsan_loadable.x86_64.so";
2052  char *argv0 = program_invocation_name;
2053  char *last_slash = strrchr(argv0, '/');
2054  assert(last_slash);
2055  int res =
2056      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
2057  return res < sz ? 0 : res;
2058}
2059
2060TEST(MemorySanitizer, dl_iterate_phdr) {
2061  char path[4096];
2062  int res = PathToLoadable(path, sizeof(path));
2063  assert(!res);
2064
2065  // Having at least one dlopen'ed library in the process makes this more
2066  // entertaining.
2067  void *lib = dlopen(path, RTLD_LAZY);
2068  ASSERT_NE((void*)0, lib);
2069
2070  int count = 0;
2071  int result = dl_iterate_phdr(dl_phdr_callback, &count);
2072  assert(count > 0);
2073
2074  dlclose(lib);
2075}
2076
2077
2078TEST(MemorySanitizer, dlopen) {
2079  char path[4096];
2080  int res = PathToLoadable(path, sizeof(path));
2081  assert(!res);
2082
2083  // We need to clear shadow for globals when doing dlopen.  In order to test
2084  // this, we have to poison the shadow for the DSO before we load it.  In
2085  // general this is difficult, but the loader tends to reload things in the
2086  // same place, so we open, close, and then reopen.  The global should always
2087  // start out clean after dlopen.
2088  for (int i = 0; i < 2; i++) {
2089    void *lib = dlopen(path, RTLD_LAZY);
2090    if (lib == NULL) {
2091      printf("dlerror: %s\n", dlerror());
2092      assert(lib != NULL);
2093    }
2094    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
2095    assert(get_dso_global);
2096    void **dso_global = get_dso_global();
2097    EXPECT_NOT_POISONED(*dso_global);
2098    __msan_poison(dso_global, sizeof(*dso_global));
2099    EXPECT_POISONED(*dso_global);
2100    dlclose(lib);
2101  }
2102}
2103
2104// Regression test for a crash in dlopen() interceptor.
2105TEST(MemorySanitizer, dlopenFailed) {
2106  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
2107  void *lib = dlopen(path, RTLD_LAZY);
2108  ASSERT_EQ(0, lib);
2109}
2110
2111#endif // MSAN_TEST_DISABLE_DLOPEN
2112
2113TEST(MemorySanitizer, sched_getaffinity) {
2114  cpu_set_t mask;
2115  int res = sched_getaffinity(getpid(), sizeof(mask), &mask);
2116  ASSERT_EQ(0, res);
2117  EXPECT_NOT_POISONED(mask);
2118}
2119
2120TEST(MemorySanitizer, scanf) {
2121  const char *input = "42 hello";
2122  int* d = new int;
2123  char* s = new char[7];
2124  int res = sscanf(input, "%d %5s", d, s);
2125  printf("res %d\n", res);
2126  assert(res == 2);
2127  EXPECT_NOT_POISONED(*d);
2128  EXPECT_NOT_POISONED(s[0]);
2129  EXPECT_NOT_POISONED(s[1]);
2130  EXPECT_NOT_POISONED(s[2]);
2131  EXPECT_NOT_POISONED(s[3]);
2132  EXPECT_NOT_POISONED(s[4]);
2133  EXPECT_NOT_POISONED(s[5]);
2134  EXPECT_POISONED(s[6]);
2135  delete s;
2136  delete d;
2137}
2138
2139static void *SimpleThread_threadfn(void* data) {
2140  return new int;
2141}
2142
2143TEST(MemorySanitizer, SimpleThread) {
2144  pthread_t t;
2145  void *p;
2146  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
2147  assert(!res);
2148  EXPECT_NOT_POISONED(t);
2149  res = pthread_join(t, &p);
2150  assert(!res);
2151  EXPECT_NOT_POISONED(p);
2152  delete (int*)p;
2153}
2154
2155static void *SmallStackThread_threadfn(void* data) {
2156  return 0;
2157}
2158
2159TEST(MemorySanitizer, SmallStackThread) {
2160  pthread_attr_t attr;
2161  pthread_t t;
2162  void *p;
2163  int res;
2164  res = pthread_attr_init(&attr);
2165  ASSERT_EQ(0, res);
2166  res = pthread_attr_setstacksize(&attr, 64 * 1024);
2167  ASSERT_EQ(0, res);
2168  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2169  ASSERT_EQ(0, res);
2170  res = pthread_join(t, &p);
2171  ASSERT_EQ(0, res);
2172  res = pthread_attr_destroy(&attr);
2173  ASSERT_EQ(0, res);
2174}
2175
2176TEST(MemorySanitizer, PreAllocatedStackThread) {
2177  pthread_attr_t attr;
2178  pthread_t t;
2179  int res;
2180  res = pthread_attr_init(&attr);
2181  ASSERT_EQ(0, res);
2182  void *stack;
2183  const size_t kStackSize = 64 * 1024;
2184  res = posix_memalign(&stack, 4096, kStackSize);
2185  ASSERT_EQ(0, res);
2186  res = pthread_attr_setstack(&attr, stack, kStackSize);
2187  ASSERT_EQ(0, res);
2188  // A small self-allocated stack can not be extended by the tool.
2189  // In this case pthread_create is expected to fail.
2190  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2191  EXPECT_NE(0, res);
2192  res = pthread_attr_destroy(&attr);
2193  ASSERT_EQ(0, res);
2194}
2195
2196TEST(MemorySanitizer, pthread_getschedparam) {
2197  int policy;
2198  struct sched_param param;
2199  int res = pthread_getschedparam(pthread_self(), &policy, &param);
2200  ASSERT_EQ(0, res);
2201  EXPECT_NOT_POISONED(policy);
2202  EXPECT_NOT_POISONED(param.sched_priority);
2203}
2204
2205TEST(MemorySanitizer, pthread_key_create) {
2206  pthread_key_t key;
2207  int res = pthread_key_create(&key, NULL);
2208  assert(!res);
2209  EXPECT_NOT_POISONED(key);
2210  res = pthread_key_delete(key);
2211  assert(!res);
2212}
2213
2214TEST(MemorySanitizer, posix_memalign) {
2215  void *p;
2216  EXPECT_POISONED(p);
2217  int res = posix_memalign(&p, 4096, 13);
2218  ASSERT_EQ(0, res);
2219  EXPECT_NOT_POISONED(p);
2220  free(p);
2221}
2222
2223TEST(MemorySanitizer, inet_pton) {
2224  const char *s = "1:0:0:0:0:0:0:8";
2225  unsigned char buf[sizeof(struct in6_addr)];
2226  int res = inet_pton(AF_INET6, s, buf);
2227  ASSERT_EQ(1, res);
2228  EXPECT_NOT_POISONED(buf[0]);
2229  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
2230
2231  char s_out[INET6_ADDRSTRLEN];
2232  EXPECT_POISONED(s_out[3]);
2233  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
2234  ASSERT_NE((void*)0, q);
2235  EXPECT_NOT_POISONED(s_out[3]);
2236}
2237
2238TEST(MemorySanitizer, inet_aton) {
2239  const char *s = "127.0.0.1";
2240  struct in_addr in[2];
2241  int res = inet_aton(s, in);
2242  ASSERT_NE(0, res);
2243  EXPECT_NOT_POISONED(in[0]);
2244  EXPECT_POISONED(*(char *)(in + 1));
2245}
2246
2247TEST(MemorySanitizer, uname) {
2248  struct utsname u;
2249  int res = uname(&u);
2250  assert(!res);
2251  EXPECT_NOT_POISONED(strlen(u.sysname));
2252  EXPECT_NOT_POISONED(strlen(u.nodename));
2253  EXPECT_NOT_POISONED(strlen(u.release));
2254  EXPECT_NOT_POISONED(strlen(u.version));
2255  EXPECT_NOT_POISONED(strlen(u.machine));
2256}
2257
2258TEST(MemorySanitizer, gethostname) {
2259  char buf[100];
2260  int res = gethostname(buf, 100);
2261  assert(!res);
2262  EXPECT_NOT_POISONED(strlen(buf));
2263}
2264
2265TEST(MemorySanitizer, sysinfo) {
2266  struct sysinfo info;
2267  int res = sysinfo(&info);
2268  assert(!res);
2269  EXPECT_NOT_POISONED(info);
2270}
2271
2272TEST(MemorySanitizer, getpwuid) {
2273  struct passwd *p = getpwuid(0); // root
2274  assert(p);
2275  EXPECT_NOT_POISONED(p->pw_name);
2276  assert(p->pw_name);
2277  EXPECT_NOT_POISONED(p->pw_name[0]);
2278  EXPECT_NOT_POISONED(p->pw_uid);
2279  assert(p->pw_uid == 0);
2280}
2281
2282TEST(MemorySanitizer, getpwnam_r) {
2283  struct passwd pwd;
2284  struct passwd *pwdres;
2285  char buf[10000];
2286  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
2287  assert(!res);
2288  EXPECT_NOT_POISONED(pwd.pw_name);
2289  assert(pwd.pw_name);
2290  EXPECT_NOT_POISONED(pwd.pw_name[0]);
2291  EXPECT_NOT_POISONED(pwd.pw_uid);
2292  assert(pwd.pw_uid == 0);
2293}
2294
2295TEST(MemorySanitizer, getpwnam_r_positive) {
2296  struct passwd pwd;
2297  struct passwd *pwdres;
2298  char s[5];
2299  strncpy(s, "abcd", 5);
2300  __msan_poison(s, 5);
2301  char buf[10000];
2302  int res;
2303  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2304}
2305
2306TEST(MemorySanitizer, getgrnam_r) {
2307  struct group grp;
2308  struct group *grpres;
2309  char buf[10000];
2310  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2311  assert(!res);
2312  EXPECT_NOT_POISONED(grp.gr_name);
2313  assert(grp.gr_name);
2314  EXPECT_NOT_POISONED(grp.gr_name[0]);
2315  EXPECT_NOT_POISONED(grp.gr_gid);
2316}
2317
2318TEST(MemorySanitizer, getgroups) {
2319  int n = getgroups(0, 0);
2320  gid_t *gids = new gid_t[n];
2321  int res = getgroups(n, gids);
2322  ASSERT_EQ(n, res);
2323  for (int i = 0; i < n; ++i)
2324    EXPECT_NOT_POISONED(gids[i]);
2325}
2326
2327template<class T>
2328static bool applySlt(T value, T shadow) {
2329  __msan_partial_poison(&value, &shadow, sizeof(T));
2330  volatile bool zzz = true;
2331  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2332  // a shift-and-trunc to get at the highest bit.
2333  volatile bool v = value < 0 || zzz;
2334  return v;
2335}
2336
2337TEST(MemorySanitizer, SignedCompareWithZero) {
2338  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2339  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2340  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2341  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2342  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2343  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2344}
2345
2346template <class T, class S>
2347static T poisoned(T Va, S Sa) {
2348  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2349  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2350  T a;
2351  a = Va;
2352  __msan_partial_poison(&a, &Sa, sizeof(T));
2353  return a;
2354}
2355
2356TEST(MemorySanitizer, ICmpRelational) {
2357  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2358  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2359  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2360  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2361  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2362  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2363                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2364  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2365                  poisoned(-1, 0xFFFFFFFFU));
2366
2367  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2368  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2369  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2370  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2371  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2372  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2373                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2374  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2375                  poisoned(-1, 0xFFFFFFFFU));
2376
2377  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2378  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2379  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2380  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2381  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2382  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2383                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2384  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2385                  poisoned(-1, 0xFFFFFFFFU));
2386
2387  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2388  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2389  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2390  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2391  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2392  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2393                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2394  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2395                  poisoned(-1, 0xFFFFFFFFU));
2396
2397  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2398  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2399
2400  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2401}
2402
2403#if MSAN_HAS_M128
2404TEST(MemorySanitizer, ICmpVectorRelational) {
2405  EXPECT_NOT_POISONED(
2406      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2407                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2408  EXPECT_NOT_POISONED(
2409      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2410                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2411  EXPECT_POISONED(
2412      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2413                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2414  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2415                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2416}
2417#endif
2418
2419// Volatile bitfield store is implemented as load-mask-store
2420// Test that we don't warn on the store of (uninitialized) padding.
2421struct VolatileBitfieldStruct {
2422  volatile unsigned x : 1;
2423  unsigned y : 1;
2424};
2425
2426TEST(MemorySanitizer, VolatileBitfield) {
2427  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2428  S->x = 1;
2429  EXPECT_NOT_POISONED((unsigned)S->x);
2430  EXPECT_POISONED((unsigned)S->y);
2431}
2432
2433TEST(MemorySanitizer, UnalignedLoad) {
2434  char x[32];
2435  memset(x + 8, 0, 16);
2436  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2437  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2438  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2439  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2440  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2441  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2442  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2443
2444  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2445  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2446  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2447  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2448  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2449  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2450  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2451
2452  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2453  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2454  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2455  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2456  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2457  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2458  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2459  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2460  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2461}
2462
2463TEST(MemorySanitizer, UnalignedStore16) {
2464  char x[5];
2465  U2 y = 0;
2466  __msan_poison(&y, 1);
2467  __sanitizer_unaligned_store16(x + 1, y);
2468  EXPECT_POISONED(x[0]);
2469  EXPECT_POISONED(x[1]);
2470  EXPECT_NOT_POISONED(x[2]);
2471  EXPECT_POISONED(x[3]);
2472  EXPECT_POISONED(x[4]);
2473}
2474
2475TEST(MemorySanitizer, UnalignedStore32) {
2476  char x[8];
2477  U4 y4 = 0;
2478  __msan_poison(&y4, 2);
2479  __sanitizer_unaligned_store32(x+3, y4);
2480  EXPECT_POISONED(x[0]);
2481  EXPECT_POISONED(x[1]);
2482  EXPECT_POISONED(x[2]);
2483  EXPECT_POISONED(x[3]);
2484  EXPECT_POISONED(x[4]);
2485  EXPECT_NOT_POISONED(x[5]);
2486  EXPECT_NOT_POISONED(x[6]);
2487  EXPECT_POISONED(x[7]);
2488}
2489
2490TEST(MemorySanitizer, UnalignedStore64) {
2491  char x[16];
2492  U8 y = 0;
2493  __msan_poison(&y, 3);
2494  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2495  __sanitizer_unaligned_store64(x+3, y);
2496  EXPECT_POISONED(x[0]);
2497  EXPECT_POISONED(x[1]);
2498  EXPECT_POISONED(x[2]);
2499  EXPECT_POISONED(x[3]);
2500  EXPECT_POISONED(x[4]);
2501  EXPECT_POISONED(x[5]);
2502  EXPECT_NOT_POISONED(x[6]);
2503  EXPECT_NOT_POISONED(x[7]);
2504  EXPECT_NOT_POISONED(x[8]);
2505  EXPECT_POISONED(x[9]);
2506  EXPECT_NOT_POISONED(x[10]);
2507  EXPECT_POISONED(x[11]);
2508}
2509
2510TEST(MemorySanitizerDr, StoreInDSOTest) {
2511  if (!__msan_has_dynamic_component()) return;
2512  char* s = new char[10];
2513  dso_memfill(s, 9);
2514  EXPECT_NOT_POISONED(s[5]);
2515  EXPECT_POISONED(s[9]);
2516}
2517
2518int return_poisoned_int() {
2519  return ReturnPoisoned<U8>();
2520}
2521
2522TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2523  if (!__msan_has_dynamic_component()) return;
2524  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2525}
2526
2527NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2528  EXPECT_POISONED(x);
2529  EXPECT_POISONED(y);
2530  EXPECT_POISONED(z);
2531  return 0;
2532}
2533
2534static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2535  EXPECT_NOT_POISONED(x);
2536  EXPECT_NOT_POISONED(y);
2537  EXPECT_NOT_POISONED(z);
2538  return 0;
2539}
2540
2541TEST(MemorySanitizerDr, CallFromDSOTest) {
2542  if (!__msan_has_dynamic_component()) return;
2543  S8* x = GetPoisoned<S8>();
2544  S8* y = GetPoisoned<S8>();
2545  S8* z = GetPoisoned<S8>();
2546  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2547  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2548}
2549
2550static void StackStoreInDSOFn(int* x, int* y) {
2551  EXPECT_NOT_POISONED(*x);
2552  EXPECT_NOT_POISONED(*y);
2553}
2554
2555TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2556  if (!__msan_has_dynamic_component()) return;
2557  dso_stack_store(StackStoreInDSOFn, 1);
2558}
2559
2560TEST(MemorySanitizerOrigins, SetGet) {
2561  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2562  if (!TrackingOrigins()) return;
2563  int x;
2564  __msan_set_origin(&x, sizeof(x), 1234);
2565  EXPECT_EQ(1234, __msan_get_origin(&x));
2566  __msan_set_origin(&x, sizeof(x), 5678);
2567  EXPECT_EQ(5678, __msan_get_origin(&x));
2568  __msan_set_origin(&x, sizeof(x), 0);
2569  EXPECT_EQ(0, __msan_get_origin(&x));
2570}
2571
2572namespace {
2573struct S {
2574  U4 dummy;
2575  U2 a;
2576  U2 b;
2577};
2578
2579// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2580TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2581  if (!TrackingOrigins()) return;
2582
2583  S s;
2584  U4 origin = rand();  // NOLINT
2585  s.a = *GetPoisonedO<U2>(0, origin);
2586  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2587  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2588
2589  s.b = 42;
2590  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2591  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2592}
2593}  // namespace
2594
2595template<class T, class BinaryOp>
2596INLINE
2597void BinaryOpOriginTest(BinaryOp op) {
2598  U4 ox = rand();  //NOLINT
2599  U4 oy = rand();  //NOLINT
2600  T *x = GetPoisonedO<T>(0, ox, 0);
2601  T *y = GetPoisonedO<T>(1, oy, 0);
2602  T *z = GetPoisonedO<T>(2, 0, 0);
2603
2604  *z = op(*x, *y);
2605  U4 origin = __msan_get_origin(z);
2606  EXPECT_POISONED_O(*z, origin);
2607  EXPECT_EQ(true, origin == ox || origin == oy);
2608
2609  // y is poisoned, x is not.
2610  *x = 10101;
2611  *y = *GetPoisonedO<T>(1, oy);
2612  break_optimization(x);
2613  __msan_set_origin(z, sizeof(*z), 0);
2614  *z = op(*x, *y);
2615  EXPECT_POISONED_O(*z, oy);
2616  EXPECT_EQ(__msan_get_origin(z), oy);
2617
2618  // x is poisoned, y is not.
2619  *x = *GetPoisonedO<T>(0, ox);
2620  *y = 10101010;
2621  break_optimization(y);
2622  __msan_set_origin(z, sizeof(*z), 0);
2623  *z = op(*x, *y);
2624  EXPECT_POISONED_O(*z, ox);
2625  EXPECT_EQ(__msan_get_origin(z), ox);
2626}
2627
2628template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2629template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2630template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2631template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2632template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2633template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2634
2635TEST(MemorySanitizerOrigins, BinaryOp) {
2636  if (!TrackingOrigins()) return;
2637  BinaryOpOriginTest<S8>(XOR<S8>);
2638  BinaryOpOriginTest<U8>(ADD<U8>);
2639  BinaryOpOriginTest<S4>(SUB<S4>);
2640  BinaryOpOriginTest<S4>(MUL<S4>);
2641  BinaryOpOriginTest<U4>(OR<U4>);
2642  BinaryOpOriginTest<U4>(AND<U4>);
2643  BinaryOpOriginTest<double>(ADD<U4>);
2644  BinaryOpOriginTest<float>(ADD<S4>);
2645  BinaryOpOriginTest<double>(ADD<double>);
2646  BinaryOpOriginTest<float>(ADD<double>);
2647}
2648
2649TEST(MemorySanitizerOrigins, Unary) {
2650  if (!TrackingOrigins()) return;
2651  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2652  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2653  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2654  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2655
2656  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2657  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2658  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2659  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2660
2661  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2662  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2663  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2664  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2665
2666  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2667  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2668  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2669  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2670
2671  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2672  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2673}
2674
2675TEST(MemorySanitizerOrigins, EQ) {
2676  if (!TrackingOrigins()) return;
2677  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2678  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2679  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2680}
2681
2682TEST(MemorySanitizerOrigins, DIV) {
2683  if (!TrackingOrigins()) return;
2684  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2685  unsigned o = __LINE__;
2686  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2687}
2688
2689TEST(MemorySanitizerOrigins, SHIFT) {
2690  if (!TrackingOrigins()) return;
2691  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2692  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2693  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2694  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2695  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2696  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2697}
2698
2699template<class T, int N>
2700void MemCpyTest() {
2701  int ox = __LINE__;
2702  T *x = new T[N];
2703  T *y = new T[N];
2704  T *z = new T[N];
2705  T *q = new T[N];
2706  __msan_poison(x, N * sizeof(T));
2707  __msan_set_origin(x, N * sizeof(T), ox);
2708  __msan_set_origin(y, N * sizeof(T), 777777);
2709  __msan_set_origin(z, N * sizeof(T), 888888);
2710  EXPECT_NOT_POISONED(x);
2711  memcpy(y, x, N * sizeof(T));
2712  EXPECT_POISONED_O(y[0], ox);
2713  EXPECT_POISONED_O(y[N/2], ox);
2714  EXPECT_POISONED_O(y[N-1], ox);
2715  EXPECT_NOT_POISONED(x);
2716  void *res = mempcpy(q, x, N * sizeof(T));
2717  ASSERT_EQ(q + N, res);
2718  EXPECT_POISONED_O(q[0], ox);
2719  EXPECT_POISONED_O(q[N/2], ox);
2720  EXPECT_POISONED_O(q[N-1], ox);
2721  EXPECT_NOT_POISONED(x);
2722  memmove(z, x, N * sizeof(T));
2723  EXPECT_POISONED_O(z[0], ox);
2724  EXPECT_POISONED_O(z[N/2], ox);
2725  EXPECT_POISONED_O(z[N-1], ox);
2726}
2727
2728TEST(MemorySanitizerOrigins, LargeMemCpy) {
2729  if (!TrackingOrigins()) return;
2730  MemCpyTest<U1, 10000>();
2731  MemCpyTest<U8, 10000>();
2732}
2733
2734TEST(MemorySanitizerOrigins, SmallMemCpy) {
2735  if (!TrackingOrigins()) return;
2736  MemCpyTest<U8, 1>();
2737  MemCpyTest<U8, 2>();
2738  MemCpyTest<U8, 3>();
2739}
2740
2741TEST(MemorySanitizerOrigins, Select) {
2742  if (!TrackingOrigins()) return;
2743  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2744  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2745  S4 x;
2746  break_optimization(&x);
2747  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2748
2749  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2750  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2751}
2752
2753extern "C"
2754NOINLINE char AllocaTO() {
2755  int ar[100];
2756  break_optimization(ar);
2757  return ar[10];
2758  // fprintf(stderr, "Descr: %s\n",
2759  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2760}
2761
2762TEST(MemorySanitizerOrigins, Alloca) {
2763  if (!TrackingOrigins()) return;
2764  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2765  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2766  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2767  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2768}
2769
2770// FIXME: replace with a lit-like test.
2771TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2772  if (!TrackingOrigins()) return;
2773  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2774}
2775
2776NOINLINE int RetvalOriginTest(U4 origin) {
2777  int *a = new int;
2778  break_optimization(a);
2779  __msan_set_origin(a, sizeof(*a), origin);
2780  int res = *a;
2781  delete a;
2782  return res;
2783}
2784
2785TEST(MemorySanitizerOrigins, Retval) {
2786  if (!TrackingOrigins()) return;
2787  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2788}
2789
2790NOINLINE void ParamOriginTest(int param, U4 origin) {
2791  EXPECT_POISONED_O(param, origin);
2792}
2793
2794TEST(MemorySanitizerOrigins, Param) {
2795  if (!TrackingOrigins()) return;
2796  int *a = new int;
2797  U4 origin = __LINE__;
2798  break_optimization(a);
2799  __msan_set_origin(a, sizeof(*a), origin);
2800  ParamOriginTest(*a, origin);
2801  delete a;
2802}
2803
2804TEST(MemorySanitizerOrigins, Invoke) {
2805  if (!TrackingOrigins()) return;
2806  StructWithDtor s;  // Will cause the calls to become invokes.
2807  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2808}
2809
2810TEST(MemorySanitizerOrigins, strlen) {
2811  S8 alignment;
2812  break_optimization(&alignment);
2813  char x[4] = {'a', 'b', 0, 0};
2814  __msan_poison(&x[2], 1);
2815  U4 origin = __LINE__;
2816  __msan_set_origin(x, sizeof(x), origin);
2817  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2818}
2819
2820TEST(MemorySanitizerOrigins, wcslen) {
2821  wchar_t w[3] = {'a', 'b', 0};
2822  U4 origin = __LINE__;
2823  __msan_set_origin(w, sizeof(w), origin);
2824  __msan_poison(&w[2], sizeof(wchar_t));
2825  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2826}
2827
2828#if MSAN_HAS_M128
2829TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2830  __m128 x, y;
2831  U4 origin = __LINE__;
2832  __msan_set_origin(&x, sizeof(x), origin);
2833  __msan_poison(&x, sizeof(x));
2834  __builtin_ia32_storeups((float*)&y, x);
2835  EXPECT_POISONED_O(y, origin);
2836}
2837#endif
2838
2839NOINLINE void RecursiveMalloc(int depth) {
2840  static int count;
2841  count++;
2842  if ((count % (1024 * 1024)) == 0)
2843    printf("RecursiveMalloc: %d\n", count);
2844  int *x1 = new int;
2845  int *x2 = new int;
2846  break_optimization(x1);
2847  break_optimization(x2);
2848  if (depth > 0) {
2849    RecursiveMalloc(depth-1);
2850    RecursiveMalloc(depth-1);
2851  }
2852  delete x1;
2853  delete x2;
2854}
2855
2856TEST(MemorySanitizer, CallocOverflow) {
2857  size_t kArraySize = 4096;
2858  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2859  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2860  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2861  EXPECT_EQ(0L, Ident(p));
2862}
2863
2864TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2865  RecursiveMalloc(22);
2866}
2867
2868TEST(MemorySanitizerAllocator, get_estimated_allocated_size) {
2869  size_t sizes[] = {0, 20, 5000, 1<<20};
2870  for (size_t i = 0; i < sizeof(sizes) / sizeof(*sizes); ++i) {
2871    size_t alloc_size = __msan_get_estimated_allocated_size(sizes[i]);
2872    EXPECT_EQ(alloc_size, sizes[i]);
2873  }
2874}
2875
2876TEST(MemorySanitizerAllocator, get_allocated_size_and_ownership) {
2877  char *array = reinterpret_cast<char*>(malloc(100));
2878  int *int_ptr = new int;
2879
2880  EXPECT_TRUE(__msan_get_ownership(array));
2881  EXPECT_EQ(100, __msan_get_allocated_size(array));
2882
2883  EXPECT_TRUE(__msan_get_ownership(int_ptr));
2884  EXPECT_EQ(sizeof(*int_ptr), __msan_get_allocated_size(int_ptr));
2885
2886  void *wild_addr = reinterpret_cast<void*>(0x1);
2887  EXPECT_FALSE(__msan_get_ownership(wild_addr));
2888  EXPECT_EQ(0, __msan_get_allocated_size(wild_addr));
2889
2890  EXPECT_FALSE(__msan_get_ownership(array + 50));
2891  EXPECT_EQ(0, __msan_get_allocated_size(array + 50));
2892
2893  // NULL is a valid argument for GetAllocatedSize but is not owned.
2894  EXPECT_FALSE(__msan_get_ownership(NULL));
2895  EXPECT_EQ(0, __msan_get_allocated_size(NULL));
2896
2897  free(array);
2898  EXPECT_FALSE(__msan_get_ownership(array));
2899  EXPECT_EQ(0, __msan_get_allocated_size(array));
2900
2901  delete int_ptr;
2902}
2903