msan_test.cc revision 67505a8a0cf9621243ed21b67dfa041224c78e4b 
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, readdir) {
930  DIR *dir = opendir(".");
931  struct dirent *d = readdir(dir);
932  assert(d);
933  EXPECT_NOT_POISONED(d->d_name[0]);
934  closedir(dir);
935}
936
937TEST(MemorySanitizer, readdir_r) {
938  DIR *dir = opendir(".");
939  struct dirent d;
940  struct dirent *pd;
941  int res = readdir_r(dir, &d, &pd);
942  assert(!res);
943  EXPECT_NOT_POISONED(pd);
944  EXPECT_NOT_POISONED(d.d_name[0]);
945  closedir(dir);
946}
947
948TEST(MemorySanitizer, realpath) {
949  const char* relpath = ".";
950  char path[PATH_MAX + 1];
951  char* res = realpath(relpath, path);
952  assert(res);
953  EXPECT_NOT_POISONED(path[0]);
954}
955
956TEST(MemorySanitizer, realpath_null) {
957  const char* relpath = ".";
958  char* res = realpath(relpath, NULL);
959  printf("%d, %s\n", errno, strerror(errno));
960  assert(res);
961  EXPECT_NOT_POISONED(res[0]);
962  free(res);
963}
964
965TEST(MemorySanitizer, canonicalize_file_name) {
966  const char* relpath = ".";
967  char* res = canonicalize_file_name(relpath);
968  assert(res);
969  EXPECT_NOT_POISONED(res[0]);
970  free(res);
971}
972
973TEST(MemorySanitizer, memcpy) {
974  char* x = new char[2];
975  char* y = new char[2];
976  x[0] = 1;
977  x[1] = *GetPoisoned<char>();
978  memcpy(y, x, 2);
979  EXPECT_NOT_POISONED(y[0]);
980  EXPECT_POISONED(y[1]);
981}
982
983TEST(MemorySanitizer, memmove) {
984  char* x = new char[2];
985  char* y = new char[2];
986  x[0] = 1;
987  x[1] = *GetPoisoned<char>();
988  memmove(y, x, 2);
989  EXPECT_NOT_POISONED(y[0]);
990  EXPECT_POISONED(y[1]);
991}
992
993TEST(MemorySanitizer, bcopy) {
994  char* x = new char[2];
995  char* y = new char[2];
996  x[0] = 1;
997  x[1] = *GetPoisoned<char>();
998  bcopy(x, y, 2);
999  EXPECT_NOT_POISONED(y[0]);
1000  EXPECT_POISONED(y[1]);
1001}
1002
1003TEST(MemorySanitizer, strdup) {
1004  char buf[4] = "abc";
1005  __msan_poison(buf + 2, sizeof(*buf));
1006  char *x = strdup(buf);
1007  EXPECT_NOT_POISONED(x[0]);
1008  EXPECT_NOT_POISONED(x[1]);
1009  EXPECT_POISONED(x[2]);
1010  EXPECT_NOT_POISONED(x[3]);
1011  free(x);
1012}
1013
1014TEST(MemorySanitizer, strndup) {
1015  char buf[4] = "abc";
1016  __msan_poison(buf + 2, sizeof(*buf));
1017  char *x = strndup(buf, 3);
1018  EXPECT_NOT_POISONED(x[0]);
1019  EXPECT_NOT_POISONED(x[1]);
1020  EXPECT_POISONED(x[2]);
1021  EXPECT_NOT_POISONED(x[3]);
1022  free(x);
1023}
1024
1025TEST(MemorySanitizer, strndup_short) {
1026  char buf[4] = "abc";
1027  __msan_poison(buf + 1, sizeof(*buf));
1028  __msan_poison(buf + 2, sizeof(*buf));
1029  char *x = strndup(buf, 2);
1030  EXPECT_NOT_POISONED(x[0]);
1031  EXPECT_POISONED(x[1]);
1032  EXPECT_NOT_POISONED(x[2]);
1033  free(x);
1034}
1035
1036
1037template<class T, int size>
1038void TestOverlapMemmove() {
1039  T *x = new T[size];
1040  assert(size >= 3);
1041  x[2] = 0;
1042  memmove(x, x + 1, (size - 1) * sizeof(T));
1043  EXPECT_NOT_POISONED(x[1]);
1044  if (!__msan_has_dynamic_component()) {
1045    // FIXME: under DR we will lose this information
1046    // because accesses in memmove will unpoisin the shadow.
1047    // We need to use our own memove implementation instead of libc's.
1048    EXPECT_POISONED(x[0]);
1049    EXPECT_POISONED(x[2]);
1050  }
1051  delete [] x;
1052}
1053
1054TEST(MemorySanitizer, overlap_memmove) {
1055  TestOverlapMemmove<U1, 10>();
1056  TestOverlapMemmove<U1, 1000>();
1057  TestOverlapMemmove<U8, 4>();
1058  TestOverlapMemmove<U8, 1000>();
1059}
1060
1061TEST(MemorySanitizer, strcpy) {  // NOLINT
1062  char* x = new char[3];
1063  char* y = new char[3];
1064  x[0] = 'a';
1065  x[1] = *GetPoisoned<char>(1, 1);
1066  x[2] = 0;
1067  strcpy(y, x);  // NOLINT
1068  EXPECT_NOT_POISONED(y[0]);
1069  EXPECT_POISONED(y[1]);
1070  EXPECT_NOT_POISONED(y[2]);
1071}
1072
1073TEST(MemorySanitizer, strncpy) {  // NOLINT
1074  char* x = new char[3];
1075  char* y = new char[3];
1076  x[0] = 'a';
1077  x[1] = *GetPoisoned<char>(1, 1);
1078  x[2] = 0;
1079  strncpy(y, x, 2);  // NOLINT
1080  EXPECT_NOT_POISONED(y[0]);
1081  EXPECT_POISONED(y[1]);
1082  EXPECT_POISONED(y[2]);
1083}
1084
1085TEST(MemorySanitizer, stpcpy) {  // NOLINT
1086  char* x = new char[3];
1087  char* y = new char[3];
1088  x[0] = 'a';
1089  x[1] = *GetPoisoned<char>(1, 1);
1090  x[2] = 0;
1091  char *res = stpcpy(y, x);  // NOLINT
1092  ASSERT_EQ(res, y + 2);
1093  EXPECT_NOT_POISONED(y[0]);
1094  EXPECT_POISONED(y[1]);
1095  EXPECT_NOT_POISONED(y[2]);
1096}
1097
1098TEST(MemorySanitizer, strtol) {
1099  char *e;
1100  assert(1 == strtol("1", &e, 10));
1101  EXPECT_NOT_POISONED((S8) e);
1102}
1103
1104TEST(MemorySanitizer, strtoll) {
1105  char *e;
1106  assert(1 == strtoll("1", &e, 10));
1107  EXPECT_NOT_POISONED((S8) e);
1108}
1109
1110TEST(MemorySanitizer, strtoul) {
1111  char *e;
1112  assert(1 == strtoul("1", &e, 10));
1113  EXPECT_NOT_POISONED((S8) e);
1114}
1115
1116TEST(MemorySanitizer, strtoull) {
1117  char *e;
1118  assert(1 == strtoull("1", &e, 10));
1119  EXPECT_NOT_POISONED((S8) e);
1120}
1121
1122TEST(MemorySanitizer, strtoimax) {
1123  char *e;
1124  assert(1 == strtoimax("1", &e, 10));
1125  EXPECT_NOT_POISONED((S8) e);
1126}
1127
1128TEST(MemorySanitizer, strtoumax) {
1129  char *e;
1130  assert(1 == strtoumax("1", &e, 10));
1131  EXPECT_NOT_POISONED((S8) e);
1132}
1133
1134TEST(MemorySanitizer, strtod) {
1135  char *e;
1136  assert(0 != strtod("1.5", &e));
1137  EXPECT_NOT_POISONED((S8) e);
1138}
1139
1140TEST(MemorySanitizer, strtof) {
1141  char *e;
1142  assert(0 != strtof("1.5", &e));
1143  EXPECT_NOT_POISONED((S8) e);
1144}
1145
1146TEST(MemorySanitizer, strtold) {
1147  char *e;
1148  assert(0 != strtold("1.5", &e));
1149  EXPECT_NOT_POISONED((S8) e);
1150}
1151
1152TEST(MemorySanitizer, modf) {
1153  double x, y;
1154  x = modf(2.1, &y);
1155  EXPECT_NOT_POISONED(y);
1156}
1157
1158TEST(MemorySanitizer, modff) {
1159  float x, y;
1160  x = modff(2.1, &y);
1161  EXPECT_NOT_POISONED(y);
1162}
1163
1164TEST(MemorySanitizer, modfl) {
1165  long double x, y;
1166  x = modfl(2.1, &y);
1167  EXPECT_NOT_POISONED(y);
1168}
1169
1170TEST(MemorySanitizer, sprintf) {  // NOLINT
1171  char buff[10];
1172  break_optimization(buff);
1173  EXPECT_POISONED(buff[0]);
1174  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1175  assert(res == 7);
1176  assert(buff[0] == '1');
1177  assert(buff[1] == '2');
1178  assert(buff[2] == '3');
1179  assert(buff[6] == '7');
1180  assert(buff[7] == 0);
1181  EXPECT_POISONED(buff[8]);
1182}
1183
1184TEST(MemorySanitizer, snprintf) {
1185  char buff[10];
1186  break_optimization(buff);
1187  EXPECT_POISONED(buff[0]);
1188  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1189  assert(res == 7);
1190  assert(buff[0] == '1');
1191  assert(buff[1] == '2');
1192  assert(buff[2] == '3');
1193  assert(buff[6] == '7');
1194  assert(buff[7] == 0);
1195  EXPECT_POISONED(buff[8]);
1196}
1197
1198TEST(MemorySanitizer, swprintf) {
1199  wchar_t buff[10];
1200  assert(sizeof(wchar_t) == 4);
1201  break_optimization(buff);
1202  EXPECT_POISONED(buff[0]);
1203  int res = swprintf(buff, 9, L"%d", 1234567);
1204  assert(res == 7);
1205  assert(buff[0] == '1');
1206  assert(buff[1] == '2');
1207  assert(buff[2] == '3');
1208  assert(buff[6] == '7');
1209  assert(buff[7] == 0);
1210  EXPECT_POISONED(buff[8]);
1211}
1212
1213TEST(MemorySanitizer, asprintf) {  // NOLINT
1214  char *pbuf;
1215  EXPECT_POISONED(pbuf);
1216  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1217  assert(res == 7);
1218  EXPECT_NOT_POISONED(pbuf);
1219  assert(pbuf[0] == '1');
1220  assert(pbuf[1] == '2');
1221  assert(pbuf[2] == '3');
1222  assert(pbuf[6] == '7');
1223  assert(pbuf[7] == 0);
1224  free(pbuf);
1225}
1226
1227TEST(MemorySanitizer, mbstowcs) {
1228  const char *x = "abc";
1229  wchar_t buff[10];
1230  int res = mbstowcs(buff, x, 2);
1231  EXPECT_EQ(2, res);
1232  EXPECT_EQ(L'a', buff[0]);
1233  EXPECT_EQ(L'b', buff[1]);
1234  EXPECT_POISONED(buff[2]);
1235  res = mbstowcs(buff, x, 10);
1236  EXPECT_EQ(3, res);
1237  EXPECT_NOT_POISONED(buff[3]);
1238}
1239
1240TEST(MemorySanitizer, wcstombs) {
1241  const wchar_t *x = L"abc";
1242  char buff[10];
1243  int res = wcstombs(buff, x, 4);
1244  EXPECT_EQ(res, 3);
1245  EXPECT_EQ(buff[0], 'a');
1246  EXPECT_EQ(buff[1], 'b');
1247  EXPECT_EQ(buff[2], 'c');
1248}
1249
1250TEST(MemorySanitizer, wcsrtombs) {
1251  const wchar_t *x = L"abc";
1252  const wchar_t *p = x;
1253  char buff[10];
1254  mbstate_t mbs;
1255  memset(&mbs, 0, sizeof(mbs));
1256  int res = wcsrtombs(buff, &p, 4, &mbs);
1257  EXPECT_EQ(res, 3);
1258  EXPECT_EQ(buff[0], 'a');
1259  EXPECT_EQ(buff[1], 'b');
1260  EXPECT_EQ(buff[2], 'c');
1261  EXPECT_EQ(buff[3], '\0');
1262  EXPECT_POISONED(buff[4]);
1263}
1264
1265TEST(MemorySanitizer, wcsnrtombs) {
1266  const wchar_t *x = L"abc";
1267  const wchar_t *p = x;
1268  char buff[10];
1269  mbstate_t mbs;
1270  memset(&mbs, 0, sizeof(mbs));
1271  int res = wcsnrtombs(buff, &p, 2, 4, &mbs);
1272  EXPECT_EQ(res, 2);
1273  EXPECT_EQ(buff[0], 'a');
1274  EXPECT_EQ(buff[1], 'b');
1275  EXPECT_POISONED(buff[2]);
1276}
1277
1278TEST(MemorySanitizer, mbtowc) {
1279  const char *x = "abc";
1280  wchar_t wx;
1281  int res = mbtowc(&wx, x, 3);
1282  EXPECT_GT(res, 0);
1283  EXPECT_NOT_POISONED(wx);
1284}
1285
1286TEST(MemorySanitizer, mbrtowc) {
1287  const char *x = "abc";
1288  wchar_t wx;
1289  mbstate_t mbs;
1290  memset(&mbs, 0, sizeof(mbs));
1291  int res = mbrtowc(&wx, x, 3, &mbs);
1292  EXPECT_GT(res, 0);
1293  EXPECT_NOT_POISONED(wx);
1294}
1295
1296TEST(MemorySanitizer, gettimeofday) {
1297  struct timeval tv;
1298  struct timezone tz;
1299  break_optimization(&tv);
1300  break_optimization(&tz);
1301  assert(sizeof(tv) == 16);
1302  assert(sizeof(tz) == 8);
1303  EXPECT_POISONED(tv.tv_sec);
1304  EXPECT_POISONED(tv.tv_usec);
1305  EXPECT_POISONED(tz.tz_minuteswest);
1306  EXPECT_POISONED(tz.tz_dsttime);
1307  assert(0 == gettimeofday(&tv, &tz));
1308  EXPECT_NOT_POISONED(tv.tv_sec);
1309  EXPECT_NOT_POISONED(tv.tv_usec);
1310  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1311  EXPECT_NOT_POISONED(tz.tz_dsttime);
1312}
1313
1314TEST(MemorySanitizer, clock_gettime) {
1315  struct timespec tp;
1316  EXPECT_POISONED(tp.tv_sec);
1317  EXPECT_POISONED(tp.tv_nsec);
1318  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1319  EXPECT_NOT_POISONED(tp.tv_sec);
1320  EXPECT_NOT_POISONED(tp.tv_nsec);
1321}
1322
1323TEST(MemorySanitizer, clock_getres) {
1324  struct timespec tp;
1325  EXPECT_POISONED(tp.tv_sec);
1326  EXPECT_POISONED(tp.tv_nsec);
1327  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1328  EXPECT_POISONED(tp.tv_sec);
1329  EXPECT_POISONED(tp.tv_nsec);
1330  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1331  EXPECT_NOT_POISONED(tp.tv_sec);
1332  EXPECT_NOT_POISONED(tp.tv_nsec);
1333}
1334
1335TEST(MemorySanitizer, getitimer) {
1336  struct itimerval it1, it2;
1337  int res;
1338  EXPECT_POISONED(it1.it_interval.tv_sec);
1339  EXPECT_POISONED(it1.it_interval.tv_usec);
1340  EXPECT_POISONED(it1.it_value.tv_sec);
1341  EXPECT_POISONED(it1.it_value.tv_usec);
1342  res = getitimer(ITIMER_VIRTUAL, &it1);
1343  assert(!res);
1344  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1345  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1346  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1347  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1348
1349  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1350  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1351
1352  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1353  assert(!res);
1354  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1355  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1356  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1357  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1358
1359  // Check that old_value can be 0, and disable the timer.
1360  memset(&it1, 0, sizeof(it1));
1361  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1362  assert(!res);
1363}
1364
1365TEST(MemorySanitizer, time) {
1366  time_t t;
1367  EXPECT_POISONED(t);
1368  time_t t2 = time(&t);
1369  assert(t2 != (time_t)-1);
1370  EXPECT_NOT_POISONED(t);
1371}
1372
1373TEST(MemorySanitizer, localtime) {
1374  time_t t = 123;
1375  struct tm *time = localtime(&t);
1376  assert(time != 0);
1377  EXPECT_NOT_POISONED(time->tm_sec);
1378  EXPECT_NOT_POISONED(time->tm_hour);
1379  EXPECT_NOT_POISONED(time->tm_year);
1380  EXPECT_NOT_POISONED(time->tm_isdst);
1381}
1382
1383TEST(MemorySanitizer, localtime_r) {
1384  time_t t = 123;
1385  struct tm time;
1386  struct tm *res = localtime_r(&t, &time);
1387  assert(res != 0);
1388  EXPECT_NOT_POISONED(time.tm_sec);
1389  EXPECT_NOT_POISONED(time.tm_hour);
1390  EXPECT_NOT_POISONED(time.tm_year);
1391  EXPECT_NOT_POISONED(time.tm_isdst);
1392}
1393
1394TEST(MemorySanitizer, mmap) {
1395  const int size = 4096;
1396  void *p1, *p2;
1397  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1398  __msan_poison(p1, size);
1399  munmap(p1, size);
1400  for (int i = 0; i < 1000; i++) {
1401    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1402    if (p2 == p1)
1403      break;
1404    else
1405      munmap(p2, size);
1406  }
1407  if (p1 == p2) {
1408    EXPECT_NOT_POISONED(*(char*)p2);
1409    munmap(p2, size);
1410  }
1411}
1412
1413// FIXME: enable and add ecvt.
1414// FIXME: check why msandr does nt handle fcvt.
1415TEST(MemorySanitizer, fcvt) {
1416  int a, b;
1417  break_optimization(&a);
1418  break_optimization(&b);
1419  EXPECT_POISONED(a);
1420  EXPECT_POISONED(b);
1421  char *str = fcvt(12345.6789, 10, &a, &b);
1422  EXPECT_NOT_POISONED(a);
1423  EXPECT_NOT_POISONED(b);
1424}
1425
1426TEST(MemorySanitizer, frexp) {
1427  int x;
1428  x = *GetPoisoned<int>();
1429  double r = frexp(1.1, &x);
1430  EXPECT_NOT_POISONED(r);
1431  EXPECT_NOT_POISONED(x);
1432
1433  x = *GetPoisoned<int>();
1434  float rf = frexpf(1.1, &x);
1435  EXPECT_NOT_POISONED(rf);
1436  EXPECT_NOT_POISONED(x);
1437
1438  x = *GetPoisoned<int>();
1439  double rl = frexpl(1.1, &x);
1440  EXPECT_NOT_POISONED(rl);
1441  EXPECT_NOT_POISONED(x);
1442}
1443
1444namespace {
1445
1446static int cnt;
1447
1448void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1449  assert(signo == SIGPROF);
1450  assert(si);
1451  EXPECT_NOT_POISONED(si->si_errno);
1452  EXPECT_NOT_POISONED(si->si_pid);
1453#if __linux__
1454# if defined(__x86_64__)
1455  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1456# elif defined(__i386__)
1457  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1458# endif
1459#endif
1460  ++cnt;
1461}
1462
1463TEST(MemorySanitizer, sigaction) {
1464  struct sigaction act = {};
1465  struct sigaction oldact = {};
1466  struct sigaction origact = {};
1467
1468  sigaction(SIGPROF, 0, &origact);
1469
1470  act.sa_flags |= SA_SIGINFO;
1471  act.sa_sigaction = &SigactionHandler;
1472  sigaction(SIGPROF, &act, 0);
1473
1474  kill(getpid(), SIGPROF);
1475
1476  act.sa_flags &= ~SA_SIGINFO;
1477  act.sa_handler = SIG_DFL;
1478  sigaction(SIGPROF, &act, 0);
1479
1480  act.sa_flags &= ~SA_SIGINFO;
1481  act.sa_handler = SIG_IGN;
1482  sigaction(SIGPROF, &act, &oldact);
1483  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1484  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1485  kill(getpid(), SIGPROF);
1486
1487  act.sa_flags |= SA_SIGINFO;
1488  act.sa_sigaction = &SigactionHandler;
1489  sigaction(SIGPROF, &act, &oldact);
1490  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1491  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1492  kill(getpid(), SIGPROF);
1493
1494  act.sa_flags &= ~SA_SIGINFO;
1495  act.sa_handler = SIG_DFL;
1496  sigaction(SIGPROF, &act, &oldact);
1497  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1498  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1499  EXPECT_EQ(2, cnt);
1500
1501  sigaction(SIGPROF, &origact, 0);
1502}
1503
1504} // namespace
1505
1506struct StructWithDtor {
1507  ~StructWithDtor();
1508};
1509
1510NOINLINE StructWithDtor::~StructWithDtor() {
1511  break_optimization(0);
1512}
1513
1514TEST(MemorySanitizer, Invoke) {
1515  StructWithDtor s;  // Will cause the calls to become invokes.
1516  EXPECT_NOT_POISONED(0);
1517  EXPECT_POISONED(*GetPoisoned<int>());
1518  EXPECT_NOT_POISONED(0);
1519  EXPECT_POISONED(*GetPoisoned<int>());
1520  EXPECT_POISONED(ReturnPoisoned<S4>());
1521}
1522
1523TEST(MemorySanitizer, ptrtoint) {
1524  // Test that shadow is propagated through pointer-to-integer conversion.
1525  void* p = (void*)0xABCD;
1526  __msan_poison(((char*)&p) + 1, sizeof(p));
1527  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1528
1529  void* q = (void*)0xABCD;
1530  __msan_poison(&q, sizeof(q) - 1);
1531  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1532}
1533
1534static void vaargsfn2(int guard, ...) {
1535  va_list vl;
1536  va_start(vl, guard);
1537  EXPECT_NOT_POISONED(va_arg(vl, int));
1538  EXPECT_NOT_POISONED(va_arg(vl, int));
1539  EXPECT_NOT_POISONED(va_arg(vl, int));
1540  EXPECT_POISONED(va_arg(vl, double));
1541  va_end(vl);
1542}
1543
1544static void vaargsfn(int guard, ...) {
1545  va_list vl;
1546  va_start(vl, guard);
1547  EXPECT_NOT_POISONED(va_arg(vl, int));
1548  EXPECT_POISONED(va_arg(vl, int));
1549  // The following call will overwrite __msan_param_tls.
1550  // Checks after it test that arg shadow was somehow saved across the call.
1551  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1552  EXPECT_NOT_POISONED(va_arg(vl, int));
1553  EXPECT_POISONED(va_arg(vl, int));
1554  va_end(vl);
1555}
1556
1557TEST(MemorySanitizer, VAArgTest) {
1558  int* x = GetPoisoned<int>();
1559  int* y = GetPoisoned<int>(4);
1560  vaargsfn(1, 13, *x, 42, *y);
1561}
1562
1563static void vaargsfn_many(int guard, ...) {
1564  va_list vl;
1565  va_start(vl, guard);
1566  EXPECT_NOT_POISONED(va_arg(vl, int));
1567  EXPECT_POISONED(va_arg(vl, int));
1568  EXPECT_NOT_POISONED(va_arg(vl, int));
1569  EXPECT_NOT_POISONED(va_arg(vl, int));
1570  EXPECT_NOT_POISONED(va_arg(vl, int));
1571  EXPECT_NOT_POISONED(va_arg(vl, int));
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, int));
1576  va_end(vl);
1577}
1578
1579TEST(MemorySanitizer, VAArgManyTest) {
1580  int* x = GetPoisoned<int>();
1581  int* y = GetPoisoned<int>(4);
1582  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1583}
1584
1585static void vaargsfn_pass2(va_list vl) {
1586  EXPECT_NOT_POISONED(va_arg(vl, int));
1587  EXPECT_NOT_POISONED(va_arg(vl, int));
1588  EXPECT_POISONED(va_arg(vl, int));
1589}
1590
1591static void vaargsfn_pass(int guard, ...) {
1592  va_list vl;
1593  va_start(vl, guard);
1594  EXPECT_POISONED(va_arg(vl, int));
1595  vaargsfn_pass2(vl);
1596  va_end(vl);
1597}
1598
1599TEST(MemorySanitizer, VAArgPass) {
1600  int* x = GetPoisoned<int>();
1601  int* y = GetPoisoned<int>(4);
1602  vaargsfn_pass(1, *x, 2, 3, *y);
1603}
1604
1605static void vaargsfn_copy2(va_list vl) {
1606  EXPECT_NOT_POISONED(va_arg(vl, int));
1607  EXPECT_POISONED(va_arg(vl, int));
1608}
1609
1610static void vaargsfn_copy(int guard, ...) {
1611  va_list vl;
1612  va_start(vl, guard);
1613  EXPECT_NOT_POISONED(va_arg(vl, int));
1614  EXPECT_POISONED(va_arg(vl, int));
1615  va_list vl2;
1616  va_copy(vl2, vl);
1617  vaargsfn_copy2(vl2);
1618  EXPECT_NOT_POISONED(va_arg(vl, int));
1619  EXPECT_POISONED(va_arg(vl, int));
1620  va_end(vl);
1621}
1622
1623TEST(MemorySanitizer, VAArgCopy) {
1624  int* x = GetPoisoned<int>();
1625  int* y = GetPoisoned<int>(4);
1626  vaargsfn_copy(1, 2, *x, 3, *y);
1627}
1628
1629static void vaargsfn_ptr(int guard, ...) {
1630  va_list vl;
1631  va_start(vl, guard);
1632  EXPECT_NOT_POISONED(va_arg(vl, int*));
1633  EXPECT_POISONED(va_arg(vl, int*));
1634  EXPECT_NOT_POISONED(va_arg(vl, int*));
1635  EXPECT_POISONED(va_arg(vl, double*));
1636  va_end(vl);
1637}
1638
1639TEST(MemorySanitizer, VAArgPtr) {
1640  int** x = GetPoisoned<int*>();
1641  double** y = GetPoisoned<double*>(8);
1642  int z;
1643  vaargsfn_ptr(1, &z, *x, &z, *y);
1644}
1645
1646static void vaargsfn_overflow(int guard, ...) {
1647  va_list vl;
1648  va_start(vl, guard);
1649  EXPECT_NOT_POISONED(va_arg(vl, int));
1650  EXPECT_NOT_POISONED(va_arg(vl, int));
1651  EXPECT_POISONED(va_arg(vl, int));
1652  EXPECT_NOT_POISONED(va_arg(vl, int));
1653  EXPECT_NOT_POISONED(va_arg(vl, int));
1654  EXPECT_NOT_POISONED(va_arg(vl, int));
1655
1656  EXPECT_NOT_POISONED(va_arg(vl, double));
1657  EXPECT_NOT_POISONED(va_arg(vl, double));
1658  EXPECT_NOT_POISONED(va_arg(vl, double));
1659  EXPECT_POISONED(va_arg(vl, double));
1660  EXPECT_NOT_POISONED(va_arg(vl, double));
1661  EXPECT_POISONED(va_arg(vl, int*));
1662  EXPECT_NOT_POISONED(va_arg(vl, double));
1663  EXPECT_NOT_POISONED(va_arg(vl, double));
1664
1665  EXPECT_POISONED(va_arg(vl, int));
1666  EXPECT_POISONED(va_arg(vl, double));
1667  EXPECT_POISONED(va_arg(vl, int*));
1668
1669  EXPECT_NOT_POISONED(va_arg(vl, int));
1670  EXPECT_NOT_POISONED(va_arg(vl, double));
1671  EXPECT_NOT_POISONED(va_arg(vl, int*));
1672
1673  EXPECT_POISONED(va_arg(vl, int));
1674  EXPECT_POISONED(va_arg(vl, double));
1675  EXPECT_POISONED(va_arg(vl, int*));
1676
1677  va_end(vl);
1678}
1679
1680TEST(MemorySanitizer, VAArgOverflow) {
1681  int* x = GetPoisoned<int>();
1682  double* y = GetPoisoned<double>(8);
1683  int** p = GetPoisoned<int*>(16);
1684  int z;
1685  vaargsfn_overflow(1,
1686      1, 2, *x, 4, 5, 6,
1687      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1688      // the following args will overflow for sure
1689      *x, *y, *p,
1690      7, 9.9, &z,
1691      *x, *y, *p);
1692}
1693
1694static void vaargsfn_tlsoverwrite2(int guard, ...) {
1695  va_list vl;
1696  va_start(vl, guard);
1697  EXPECT_NOT_POISONED(va_arg(vl, int));
1698  va_end(vl);
1699}
1700
1701static void vaargsfn_tlsoverwrite(int guard, ...) {
1702  // This call will overwrite TLS contents unless it's backed up somewhere.
1703  vaargsfn_tlsoverwrite2(2, 42);
1704  va_list vl;
1705  va_start(vl, guard);
1706  EXPECT_POISONED(va_arg(vl, int));
1707  va_end(vl);
1708}
1709
1710TEST(MemorySanitizer, VAArgTLSOverwrite) {
1711  int* x = GetPoisoned<int>();
1712  vaargsfn_tlsoverwrite(1, *x);
1713}
1714
1715struct StructByVal {
1716  int a, b, c, d, e, f;
1717};
1718
1719NOINLINE void StructByValTestFunc(struct StructByVal s) {
1720  EXPECT_NOT_POISONED(s.a);
1721  EXPECT_POISONED(s.b);
1722  EXPECT_NOT_POISONED(s.c);
1723  EXPECT_POISONED(s.d);
1724  EXPECT_NOT_POISONED(s.e);
1725  EXPECT_POISONED(s.f);
1726}
1727
1728NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1729  StructByValTestFunc(s);
1730}
1731
1732NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1733  StructByValTestFunc(s);
1734}
1735
1736TEST(MemorySanitizer, StructByVal) {
1737  // Large aggregates are passed as "byval" pointer argument in LLVM.
1738  struct StructByVal s;
1739  s.a = 1;
1740  s.b = *GetPoisoned<int>();
1741  s.c = 2;
1742  s.d = *GetPoisoned<int>();
1743  s.e = 3;
1744  s.f = *GetPoisoned<int>();
1745  StructByValTestFunc(s);
1746  StructByValTestFunc1(s);
1747  StructByValTestFunc2(0, s);
1748}
1749
1750
1751#if MSAN_HAS_M128
1752NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1753NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1754TEST(MemorySanitizer, m128) {
1755  __m128i a = _mm_set1_epi16(0x1234);
1756  __m128i b = _mm_set1_epi16(0x7890);
1757  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1758  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1759}
1760// FIXME: add more tests for __m128i.
1761#endif  // MSAN_HAS_M128
1762
1763// We should not complain when copying this poisoned hole.
1764struct StructWithHole {
1765  U4  a;
1766  // 4-byte hole.
1767  U8  b;
1768};
1769
1770NOINLINE StructWithHole ReturnStructWithHole() {
1771  StructWithHole res;
1772  __msan_poison(&res, sizeof(res));
1773  res.a = 1;
1774  res.b = 2;
1775  return res;
1776}
1777
1778TEST(MemorySanitizer, StructWithHole) {
1779  StructWithHole a = ReturnStructWithHole();
1780  break_optimization(&a);
1781}
1782
1783template <class T>
1784NOINLINE T ReturnStruct() {
1785  T res;
1786  __msan_poison(&res, sizeof(res));
1787  res.a = 1;
1788  return res;
1789}
1790
1791template <class T>
1792NOINLINE void TestReturnStruct() {
1793  T s1 = ReturnStruct<T>();
1794  EXPECT_NOT_POISONED(s1.a);
1795  EXPECT_POISONED(s1.b);
1796}
1797
1798struct SSS1 {
1799  int a, b, c;
1800};
1801struct SSS2 {
1802  int b, a, c;
1803};
1804struct SSS3 {
1805  int b, c, a;
1806};
1807struct SSS4 {
1808  int c, b, a;
1809};
1810
1811struct SSS5 {
1812  int a;
1813  float b;
1814};
1815struct SSS6 {
1816  int a;
1817  double b;
1818};
1819struct SSS7 {
1820  S8 b;
1821  int a;
1822};
1823struct SSS8 {
1824  S2 b;
1825  S8 a;
1826};
1827
1828TEST(MemorySanitizer, IntStruct3) {
1829  TestReturnStruct<SSS1>();
1830  TestReturnStruct<SSS2>();
1831  TestReturnStruct<SSS3>();
1832  TestReturnStruct<SSS4>();
1833  TestReturnStruct<SSS5>();
1834  TestReturnStruct<SSS6>();
1835  TestReturnStruct<SSS7>();
1836  TestReturnStruct<SSS8>();
1837}
1838
1839struct LongStruct {
1840  U1 a1, b1;
1841  U2 a2, b2;
1842  U4 a4, b4;
1843  U8 a8, b8;
1844};
1845
1846NOINLINE LongStruct ReturnLongStruct1() {
1847  LongStruct res;
1848  __msan_poison(&res, sizeof(res));
1849  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1850  // leaves b1, .., b8 poisoned.
1851  return res;
1852}
1853
1854NOINLINE LongStruct ReturnLongStruct2() {
1855  LongStruct res;
1856  __msan_poison(&res, sizeof(res));
1857  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1858  // leaves a1, .., a8 poisoned.
1859  return res;
1860}
1861
1862TEST(MemorySanitizer, LongStruct) {
1863  LongStruct s1 = ReturnLongStruct1();
1864  __msan_print_shadow(&s1, sizeof(s1));
1865  EXPECT_NOT_POISONED(s1.a1);
1866  EXPECT_NOT_POISONED(s1.a2);
1867  EXPECT_NOT_POISONED(s1.a4);
1868  EXPECT_NOT_POISONED(s1.a8);
1869
1870  EXPECT_POISONED(s1.b1);
1871  EXPECT_POISONED(s1.b2);
1872  EXPECT_POISONED(s1.b4);
1873  EXPECT_POISONED(s1.b8);
1874
1875  LongStruct s2 = ReturnLongStruct2();
1876  __msan_print_shadow(&s2, sizeof(s2));
1877  EXPECT_NOT_POISONED(s2.b1);
1878  EXPECT_NOT_POISONED(s2.b2);
1879  EXPECT_NOT_POISONED(s2.b4);
1880  EXPECT_NOT_POISONED(s2.b8);
1881
1882  EXPECT_POISONED(s2.a1);
1883  EXPECT_POISONED(s2.a2);
1884  EXPECT_POISONED(s2.a4);
1885  EXPECT_POISONED(s2.a8);
1886}
1887
1888TEST(MemorySanitizer, getrlimit) {
1889  struct rlimit limit;
1890  __msan_poison(&limit, sizeof(limit));
1891  int result = getrlimit(RLIMIT_DATA, &limit);
1892  assert(result == 0);
1893  EXPECT_NOT_POISONED(limit.rlim_cur);
1894  EXPECT_NOT_POISONED(limit.rlim_max);
1895}
1896
1897TEST(MemorySanitizer, getrusage) {
1898  struct rusage usage;
1899  __msan_poison(&usage, sizeof(usage));
1900  int result = getrusage(RUSAGE_SELF, &usage);
1901  assert(result == 0);
1902  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
1903  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
1904  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
1905  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
1906  EXPECT_NOT_POISONED(usage.ru_maxrss);
1907  EXPECT_NOT_POISONED(usage.ru_minflt);
1908  EXPECT_NOT_POISONED(usage.ru_majflt);
1909  EXPECT_NOT_POISONED(usage.ru_inblock);
1910  EXPECT_NOT_POISONED(usage.ru_oublock);
1911  EXPECT_NOT_POISONED(usage.ru_nvcsw);
1912  EXPECT_NOT_POISONED(usage.ru_nivcsw);
1913}
1914
1915#ifdef __GLIBC__
1916extern char *program_invocation_name;
1917#else  // __GLIBC__
1918# error "TODO: port this"
1919#endif
1920
1921static void dladdr_testfn() {}
1922
1923TEST(MemorySanitizer, dladdr) {
1924  Dl_info info;
1925  __msan_poison(&info, sizeof(info));
1926  int result = dladdr((const void*)dladdr_testfn, &info);
1927  assert(result != 0);
1928  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
1929  if (info.dli_fname)
1930    EXPECT_NOT_POISONED(strlen(info.dli_fname));
1931  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
1932  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
1933  if (info.dli_sname)
1934    EXPECT_NOT_POISONED(strlen(info.dli_sname));
1935  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
1936}
1937
1938static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
1939  (*(int *)data)++;
1940  EXPECT_NOT_POISONED(info->dlpi_addr);
1941  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
1942  EXPECT_NOT_POISONED(info->dlpi_phnum);
1943  for (int i = 0; i < info->dlpi_phnum; ++i)
1944    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
1945  return 0;
1946}
1947
1948#ifndef MSAN_TEST_DISABLE_DLOPEN
1949
1950// Compute the path to our loadable DSO.  We assume it's in the same
1951// directory.  Only use string routines that we intercept so far to do this.
1952static int PathToLoadable(char *buf, size_t sz) {
1953  const char *basename = "libmsan_loadable.x86_64.so";
1954  char *argv0 = program_invocation_name;
1955  char *last_slash = strrchr(argv0, '/');
1956  assert(last_slash);
1957  int res =
1958      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
1959  return res < sz ? 0 : res;
1960}
1961
1962TEST(MemorySanitizer, dl_iterate_phdr) {
1963  char path[4096];
1964  int res = PathToLoadable(path, sizeof(path));
1965  assert(!res);
1966
1967  // Having at least one dlopen'ed library in the process makes this more
1968  // entertaining.
1969  void *lib = dlopen(path, RTLD_LAZY);
1970  ASSERT_NE((void*)0, lib);
1971
1972  int count = 0;
1973  int result = dl_iterate_phdr(dl_phdr_callback, &count);
1974  assert(count > 0);
1975
1976  dlclose(lib);
1977}
1978
1979
1980TEST(MemorySanitizer, dlopen) {
1981  char path[4096];
1982  int res = PathToLoadable(path, sizeof(path));
1983  assert(!res);
1984
1985  // We need to clear shadow for globals when doing dlopen.  In order to test
1986  // this, we have to poison the shadow for the DSO before we load it.  In
1987  // general this is difficult, but the loader tends to reload things in the
1988  // same place, so we open, close, and then reopen.  The global should always
1989  // start out clean after dlopen.
1990  for (int i = 0; i < 2; i++) {
1991    void *lib = dlopen(path, RTLD_LAZY);
1992    if (lib == NULL) {
1993      printf("dlerror: %s\n", dlerror());
1994      assert(lib != NULL);
1995    }
1996    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
1997    assert(get_dso_global);
1998    void **dso_global = get_dso_global();
1999    EXPECT_NOT_POISONED(*dso_global);
2000    __msan_poison(dso_global, sizeof(*dso_global));
2001    EXPECT_POISONED(*dso_global);
2002    dlclose(lib);
2003  }
2004}
2005
2006// Regression test for a crash in dlopen() interceptor.
2007TEST(MemorySanitizer, dlopenFailed) {
2008  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
2009  void *lib = dlopen(path, RTLD_LAZY);
2010  ASSERT_EQ(0, lib);
2011}
2012
2013#endif // MSAN_TEST_DISABLE_DLOPEN
2014
2015TEST(MemorySanitizer, scanf) {
2016  const char *input = "42 hello";
2017  int* d = new int;
2018  char* s = new char[7];
2019  int res = sscanf(input, "%d %5s", d, s);
2020  printf("res %d\n", res);
2021  assert(res == 2);
2022  EXPECT_NOT_POISONED(*d);
2023  EXPECT_NOT_POISONED(s[0]);
2024  EXPECT_NOT_POISONED(s[1]);
2025  EXPECT_NOT_POISONED(s[2]);
2026  EXPECT_NOT_POISONED(s[3]);
2027  EXPECT_NOT_POISONED(s[4]);
2028  EXPECT_NOT_POISONED(s[5]);
2029  EXPECT_POISONED(s[6]);
2030  delete s;
2031  delete d;
2032}
2033
2034static void *SimpleThread_threadfn(void* data) {
2035  return new int;
2036}
2037
2038TEST(MemorySanitizer, SimpleThread) {
2039  pthread_t t;
2040  void *p;
2041  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
2042  assert(!res);
2043  EXPECT_NOT_POISONED(t);
2044  res = pthread_join(t, &p);
2045  assert(!res);
2046  if (!__msan_has_dynamic_component())  // FIXME: intercept pthread_join (?).
2047    __msan_unpoison(&p, sizeof(p));
2048  delete (int*)p;
2049}
2050
2051static void *SmallStackThread_threadfn(void* data) {
2052  return 0;
2053}
2054
2055TEST(MemorySanitizer, SmallStackThread) {
2056  pthread_attr_t attr;
2057  pthread_t t;
2058  void *p;
2059  int res;
2060  res = pthread_attr_init(&attr);
2061  ASSERT_EQ(0, res);
2062  res = pthread_attr_setstacksize(&attr, 64 * 1024);
2063  ASSERT_EQ(0, res);
2064  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2065  ASSERT_EQ(0, res);
2066  res = pthread_join(t, &p);
2067  ASSERT_EQ(0, res);
2068  res = pthread_attr_destroy(&attr);
2069  ASSERT_EQ(0, res);
2070}
2071
2072TEST(MemorySanitizer, PreAllocatedStackThread) {
2073  pthread_attr_t attr;
2074  pthread_t t;
2075  int res;
2076  res = pthread_attr_init(&attr);
2077  ASSERT_EQ(0, res);
2078  void *stack;
2079  const size_t kStackSize = 64 * 1024;
2080  res = posix_memalign(&stack, 4096, kStackSize);
2081  ASSERT_EQ(0, res);
2082  res = pthread_attr_setstack(&attr, stack, kStackSize);
2083  ASSERT_EQ(0, res);
2084  // A small self-allocated stack can not be extended by the tool.
2085  // In this case pthread_create is expected to fail.
2086  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2087  EXPECT_NE(0, res);
2088  res = pthread_attr_destroy(&attr);
2089  ASSERT_EQ(0, res);
2090}
2091
2092TEST(MemorySanitizer, pthread_getschedparam) {
2093  int policy;
2094  struct sched_param param;
2095  int res = pthread_getschedparam(pthread_self(), &policy, &param);
2096  ASSERT_EQ(0, res);
2097  EXPECT_NOT_POISONED(policy);
2098  EXPECT_NOT_POISONED(param.sched_priority);
2099}
2100
2101TEST(MemorySanitizer, pthread_key_create) {
2102  pthread_key_t key;
2103  int res = pthread_key_create(&key, NULL);
2104  assert(!res);
2105  EXPECT_NOT_POISONED(key);
2106  res = pthread_key_delete(key);
2107  assert(!res);
2108}
2109
2110TEST(MemorySanitizer, posix_memalign) {
2111  void *p;
2112  EXPECT_POISONED(p);
2113  int res = posix_memalign(&p, 4096, 13);
2114  ASSERT_EQ(0, res);
2115  EXPECT_NOT_POISONED(p);
2116  free(p);
2117}
2118
2119TEST(MemorySanitizer, inet_pton) {
2120  const char *s = "1:0:0:0:0:0:0:8";
2121  unsigned char buf[sizeof(struct in6_addr)];
2122  int res = inet_pton(AF_INET6, s, buf);
2123  ASSERT_EQ(1, res);
2124  EXPECT_NOT_POISONED(buf[0]);
2125  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
2126
2127  char s_out[INET6_ADDRSTRLEN];
2128  EXPECT_POISONED(s_out[3]);
2129  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
2130  ASSERT_NE((void*)0, q);
2131  EXPECT_NOT_POISONED(s_out[3]);
2132}
2133
2134TEST(MemorySanitizer, inet_aton) {
2135  const char *s = "127.0.0.1";
2136  struct in_addr in[2];
2137  int res = inet_aton(s, in);
2138  ASSERT_NE(0, res);
2139  EXPECT_NOT_POISONED(in[0]);
2140  EXPECT_POISONED(*(char *)(in + 1));
2141}
2142
2143TEST(MemorySanitizer, uname) {
2144  struct utsname u;
2145  int res = uname(&u);
2146  assert(!res);
2147  EXPECT_NOT_POISONED(strlen(u.sysname));
2148  EXPECT_NOT_POISONED(strlen(u.nodename));
2149  EXPECT_NOT_POISONED(strlen(u.release));
2150  EXPECT_NOT_POISONED(strlen(u.version));
2151  EXPECT_NOT_POISONED(strlen(u.machine));
2152}
2153
2154TEST(MemorySanitizer, gethostname) {
2155  char buf[100];
2156  int res = gethostname(buf, 100);
2157  assert(!res);
2158  EXPECT_NOT_POISONED(strlen(buf));
2159}
2160
2161TEST(MemorySanitizer, sysinfo) {
2162  struct sysinfo info;
2163  int res = sysinfo(&info);
2164  assert(!res);
2165  EXPECT_NOT_POISONED(info);
2166}
2167
2168TEST(MemorySanitizer, getpwuid) {
2169  struct passwd *p = getpwuid(0); // root
2170  assert(p);
2171  EXPECT_NOT_POISONED(p->pw_name);
2172  assert(p->pw_name);
2173  EXPECT_NOT_POISONED(p->pw_name[0]);
2174  EXPECT_NOT_POISONED(p->pw_uid);
2175  assert(p->pw_uid == 0);
2176}
2177
2178TEST(MemorySanitizer, getpwnam_r) {
2179  struct passwd pwd;
2180  struct passwd *pwdres;
2181  char buf[10000];
2182  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
2183  assert(!res);
2184  EXPECT_NOT_POISONED(pwd.pw_name);
2185  assert(pwd.pw_name);
2186  EXPECT_NOT_POISONED(pwd.pw_name[0]);
2187  EXPECT_NOT_POISONED(pwd.pw_uid);
2188  assert(pwd.pw_uid == 0);
2189}
2190
2191TEST(MemorySanitizer, getpwnam_r_positive) {
2192  struct passwd pwd;
2193  struct passwd *pwdres;
2194  char s[5];
2195  strncpy(s, "abcd", 5);
2196  __msan_poison(s, 5);
2197  char buf[10000];
2198  int res;
2199  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2200}
2201
2202TEST(MemorySanitizer, getgrnam_r) {
2203  struct group grp;
2204  struct group *grpres;
2205  char buf[10000];
2206  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2207  assert(!res);
2208  EXPECT_NOT_POISONED(grp.gr_name);
2209  assert(grp.gr_name);
2210  EXPECT_NOT_POISONED(grp.gr_name[0]);
2211  EXPECT_NOT_POISONED(grp.gr_gid);
2212}
2213
2214template<class T>
2215static bool applySlt(T value, T shadow) {
2216  __msan_partial_poison(&value, &shadow, sizeof(T));
2217  volatile bool zzz = true;
2218  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2219  // a shift-and-trunc to get at the highest bit.
2220  volatile bool v = value < 0 || zzz;
2221  return v;
2222}
2223
2224TEST(MemorySanitizer, SignedCompareWithZero) {
2225  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2226  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2227  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2228  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2229  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2230  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2231}
2232
2233template <class T, class S>
2234static T poisoned(T Va, S Sa) {
2235  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2236  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2237  T a;
2238  a = Va;
2239  __msan_partial_poison(&a, &Sa, sizeof(T));
2240  return a;
2241}
2242
2243TEST(MemorySanitizer, ICmpRelational) {
2244  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2245  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2246  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2247  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2248  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2249  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2250                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2251  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2252                  poisoned(-1, 0xFFFFFFFFU));
2253
2254  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2255  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2256  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2257  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2258  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2259  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2260                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2261  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2262                  poisoned(-1, 0xFFFFFFFFU));
2263
2264  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2265  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2266  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2267  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2268  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2269  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2270                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2271  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2272                  poisoned(-1, 0xFFFFFFFFU));
2273
2274  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2275  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2276  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2277  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2278  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2279  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2280                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2281  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2282                  poisoned(-1, 0xFFFFFFFFU));
2283
2284  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2285  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2286
2287  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2288}
2289
2290#if MSAN_HAS_M128
2291TEST(MemorySanitizer, ICmpVectorRelational) {
2292  EXPECT_NOT_POISONED(
2293      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2294                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2295  EXPECT_NOT_POISONED(
2296      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2297                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2298  EXPECT_POISONED(
2299      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2300                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2301  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2302                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2303}
2304#endif
2305
2306// Volatile bitfield store is implemented as load-mask-store
2307// Test that we don't warn on the store of (uninitialized) padding.
2308struct VolatileBitfieldStruct {
2309  volatile unsigned x : 1;
2310  unsigned y : 1;
2311};
2312
2313TEST(MemorySanitizer, VolatileBitfield) {
2314  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2315  S->x = 1;
2316  EXPECT_NOT_POISONED((unsigned)S->x);
2317  EXPECT_POISONED((unsigned)S->y);
2318}
2319
2320TEST(MemorySanitizer, UnalignedLoad) {
2321  char x[32];
2322  memset(x + 8, 0, 16);
2323  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2324  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2325  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2326  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2327  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2328  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2329  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2330
2331  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2332  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2333  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2334  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2335  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2336  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2337  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2338
2339  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2340  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2341  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2342  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2343  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2344  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2345  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2346  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2347  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2348}
2349
2350TEST(MemorySanitizer, UnalignedStore16) {
2351  char x[5];
2352  U2 y = 0;
2353  __msan_poison(&y, 1);
2354  __sanitizer_unaligned_store16(x + 1, y);
2355  EXPECT_POISONED(x[0]);
2356  EXPECT_POISONED(x[1]);
2357  EXPECT_NOT_POISONED(x[2]);
2358  EXPECT_POISONED(x[3]);
2359  EXPECT_POISONED(x[4]);
2360}
2361
2362TEST(MemorySanitizer, UnalignedStore32) {
2363  char x[8];
2364  U4 y4 = 0;
2365  __msan_poison(&y4, 2);
2366  __sanitizer_unaligned_store32(x+3, y4);
2367  EXPECT_POISONED(x[0]);
2368  EXPECT_POISONED(x[1]);
2369  EXPECT_POISONED(x[2]);
2370  EXPECT_POISONED(x[3]);
2371  EXPECT_POISONED(x[4]);
2372  EXPECT_NOT_POISONED(x[5]);
2373  EXPECT_NOT_POISONED(x[6]);
2374  EXPECT_POISONED(x[7]);
2375}
2376
2377TEST(MemorySanitizer, UnalignedStore64) {
2378  char x[16];
2379  U8 y = 0;
2380  __msan_poison(&y, 3);
2381  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2382  __sanitizer_unaligned_store64(x+3, y);
2383  EXPECT_POISONED(x[0]);
2384  EXPECT_POISONED(x[1]);
2385  EXPECT_POISONED(x[2]);
2386  EXPECT_POISONED(x[3]);
2387  EXPECT_POISONED(x[4]);
2388  EXPECT_POISONED(x[5]);
2389  EXPECT_NOT_POISONED(x[6]);
2390  EXPECT_NOT_POISONED(x[7]);
2391  EXPECT_NOT_POISONED(x[8]);
2392  EXPECT_POISONED(x[9]);
2393  EXPECT_NOT_POISONED(x[10]);
2394  EXPECT_POISONED(x[11]);
2395}
2396
2397TEST(MemorySanitizerDr, StoreInDSOTest) {
2398  if (!__msan_has_dynamic_component()) return;
2399  char* s = new char[10];
2400  dso_memfill(s, 9);
2401  EXPECT_NOT_POISONED(s[5]);
2402  EXPECT_POISONED(s[9]);
2403}
2404
2405int return_poisoned_int() {
2406  return ReturnPoisoned<U8>();
2407}
2408
2409TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2410  if (!__msan_has_dynamic_component()) return;
2411  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2412}
2413
2414NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2415  EXPECT_POISONED(x);
2416  EXPECT_POISONED(y);
2417  EXPECT_POISONED(z);
2418  return 0;
2419}
2420
2421static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2422  EXPECT_NOT_POISONED(x);
2423  EXPECT_NOT_POISONED(y);
2424  EXPECT_NOT_POISONED(z);
2425  return 0;
2426}
2427
2428TEST(MemorySanitizerDr, CallFromDSOTest) {
2429  if (!__msan_has_dynamic_component()) return;
2430  S8* x = GetPoisoned<S8>();
2431  S8* y = GetPoisoned<S8>();
2432  S8* z = GetPoisoned<S8>();
2433  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2434  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2435}
2436
2437static void StackStoreInDSOFn(int* x, int* y) {
2438  EXPECT_NOT_POISONED(*x);
2439  EXPECT_NOT_POISONED(*y);
2440}
2441
2442TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2443  if (!__msan_has_dynamic_component()) return;
2444  dso_stack_store(StackStoreInDSOFn, 1);
2445}
2446
2447TEST(MemorySanitizerOrigins, SetGet) {
2448  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2449  if (!TrackingOrigins()) return;
2450  int x;
2451  __msan_set_origin(&x, sizeof(x), 1234);
2452  EXPECT_EQ(1234, __msan_get_origin(&x));
2453  __msan_set_origin(&x, sizeof(x), 5678);
2454  EXPECT_EQ(5678, __msan_get_origin(&x));
2455  __msan_set_origin(&x, sizeof(x), 0);
2456  EXPECT_EQ(0, __msan_get_origin(&x));
2457}
2458
2459namespace {
2460struct S {
2461  U4 dummy;
2462  U2 a;
2463  U2 b;
2464};
2465
2466// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2467TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2468  if (!TrackingOrigins()) return;
2469
2470  S s;
2471  U4 origin = rand();  // NOLINT
2472  s.a = *GetPoisonedO<U2>(0, origin);
2473  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2474  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2475
2476  s.b = 42;
2477  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2478  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2479}
2480}  // namespace
2481
2482template<class T, class BinaryOp>
2483INLINE
2484void BinaryOpOriginTest(BinaryOp op) {
2485  U4 ox = rand();  //NOLINT
2486  U4 oy = rand();  //NOLINT
2487  T *x = GetPoisonedO<T>(0, ox, 0);
2488  T *y = GetPoisonedO<T>(1, oy, 0);
2489  T *z = GetPoisonedO<T>(2, 0, 0);
2490
2491  *z = op(*x, *y);
2492  U4 origin = __msan_get_origin(z);
2493  EXPECT_POISONED_O(*z, origin);
2494  EXPECT_EQ(true, origin == ox || origin == oy);
2495
2496  // y is poisoned, x is not.
2497  *x = 10101;
2498  *y = *GetPoisonedO<T>(1, oy);
2499  break_optimization(x);
2500  __msan_set_origin(z, sizeof(*z), 0);
2501  *z = op(*x, *y);
2502  EXPECT_POISONED_O(*z, oy);
2503  EXPECT_EQ(__msan_get_origin(z), oy);
2504
2505  // x is poisoned, y is not.
2506  *x = *GetPoisonedO<T>(0, ox);
2507  *y = 10101010;
2508  break_optimization(y);
2509  __msan_set_origin(z, sizeof(*z), 0);
2510  *z = op(*x, *y);
2511  EXPECT_POISONED_O(*z, ox);
2512  EXPECT_EQ(__msan_get_origin(z), ox);
2513}
2514
2515template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2516template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2517template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2518template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2519template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2520template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2521
2522TEST(MemorySanitizerOrigins, BinaryOp) {
2523  if (!TrackingOrigins()) return;
2524  BinaryOpOriginTest<S8>(XOR<S8>);
2525  BinaryOpOriginTest<U8>(ADD<U8>);
2526  BinaryOpOriginTest<S4>(SUB<S4>);
2527  BinaryOpOriginTest<S4>(MUL<S4>);
2528  BinaryOpOriginTest<U4>(OR<U4>);
2529  BinaryOpOriginTest<U4>(AND<U4>);
2530  BinaryOpOriginTest<double>(ADD<U4>);
2531  BinaryOpOriginTest<float>(ADD<S4>);
2532  BinaryOpOriginTest<double>(ADD<double>);
2533  BinaryOpOriginTest<float>(ADD<double>);
2534}
2535
2536TEST(MemorySanitizerOrigins, Unary) {
2537  if (!TrackingOrigins()) return;
2538  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2539  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2540  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2541  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2542
2543  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2544  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2545  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2546  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2547
2548  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2549  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2550  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2551  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2552
2553  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2554  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2555  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2556  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2557
2558  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2559  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2560}
2561
2562TEST(MemorySanitizerOrigins, EQ) {
2563  if (!TrackingOrigins()) return;
2564  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2565  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2566  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2567}
2568
2569TEST(MemorySanitizerOrigins, DIV) {
2570  if (!TrackingOrigins()) return;
2571  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2572  unsigned o = __LINE__;
2573  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2574}
2575
2576TEST(MemorySanitizerOrigins, SHIFT) {
2577  if (!TrackingOrigins()) return;
2578  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2579  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2580  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2581  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2582  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2583  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2584}
2585
2586template<class T, int N>
2587void MemCpyTest() {
2588  int ox = __LINE__;
2589  T *x = new T[N];
2590  T *y = new T[N];
2591  T *z = new T[N];
2592  T *q = new T[N];
2593  __msan_poison(x, N * sizeof(T));
2594  __msan_set_origin(x, N * sizeof(T), ox);
2595  __msan_set_origin(y, N * sizeof(T), 777777);
2596  __msan_set_origin(z, N * sizeof(T), 888888);
2597  EXPECT_NOT_POISONED(x);
2598  memcpy(y, x, N * sizeof(T));
2599  EXPECT_POISONED_O(y[0], ox);
2600  EXPECT_POISONED_O(y[N/2], ox);
2601  EXPECT_POISONED_O(y[N-1], ox);
2602  EXPECT_NOT_POISONED(x);
2603  void *res = mempcpy(q, x, N * sizeof(T));
2604  ASSERT_EQ(q + N, res);
2605  EXPECT_POISONED_O(q[0], ox);
2606  EXPECT_POISONED_O(q[N/2], ox);
2607  EXPECT_POISONED_O(q[N-1], ox);
2608  EXPECT_NOT_POISONED(x);
2609  memmove(z, x, N * sizeof(T));
2610  EXPECT_POISONED_O(z[0], ox);
2611  EXPECT_POISONED_O(z[N/2], ox);
2612  EXPECT_POISONED_O(z[N-1], ox);
2613}
2614
2615TEST(MemorySanitizerOrigins, LargeMemCpy) {
2616  if (!TrackingOrigins()) return;
2617  MemCpyTest<U1, 10000>();
2618  MemCpyTest<U8, 10000>();
2619}
2620
2621TEST(MemorySanitizerOrigins, SmallMemCpy) {
2622  if (!TrackingOrigins()) return;
2623  MemCpyTest<U8, 1>();
2624  MemCpyTest<U8, 2>();
2625  MemCpyTest<U8, 3>();
2626}
2627
2628TEST(MemorySanitizerOrigins, Select) {
2629  if (!TrackingOrigins()) return;
2630  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2631  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2632  S4 x;
2633  break_optimization(&x);
2634  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2635
2636  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2637  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2638}
2639
2640extern "C"
2641NOINLINE char AllocaTO() {
2642  int ar[100];
2643  break_optimization(ar);
2644  return ar[10];
2645  // fprintf(stderr, "Descr: %s\n",
2646  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2647}
2648
2649TEST(MemorySanitizerOrigins, Alloca) {
2650  if (!TrackingOrigins()) return;
2651  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2652  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2653  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2654  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2655}
2656
2657// FIXME: replace with a lit-like test.
2658TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2659  if (!TrackingOrigins()) return;
2660  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2661}
2662
2663NOINLINE int RetvalOriginTest(U4 origin) {
2664  int *a = new int;
2665  break_optimization(a);
2666  __msan_set_origin(a, sizeof(*a), origin);
2667  int res = *a;
2668  delete a;
2669  return res;
2670}
2671
2672TEST(MemorySanitizerOrigins, Retval) {
2673  if (!TrackingOrigins()) return;
2674  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2675}
2676
2677NOINLINE void ParamOriginTest(int param, U4 origin) {
2678  EXPECT_POISONED_O(param, origin);
2679}
2680
2681TEST(MemorySanitizerOrigins, Param) {
2682  if (!TrackingOrigins()) return;
2683  int *a = new int;
2684  U4 origin = __LINE__;
2685  break_optimization(a);
2686  __msan_set_origin(a, sizeof(*a), origin);
2687  ParamOriginTest(*a, origin);
2688  delete a;
2689}
2690
2691TEST(MemorySanitizerOrigins, Invoke) {
2692  if (!TrackingOrigins()) return;
2693  StructWithDtor s;  // Will cause the calls to become invokes.
2694  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2695}
2696
2697TEST(MemorySanitizerOrigins, strlen) {
2698  S8 alignment;
2699  break_optimization(&alignment);
2700  char x[4] = {'a', 'b', 0, 0};
2701  __msan_poison(&x[2], 1);
2702  U4 origin = __LINE__;
2703  __msan_set_origin(x, sizeof(x), origin);
2704  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2705}
2706
2707TEST(MemorySanitizerOrigins, wcslen) {
2708  wchar_t w[3] = {'a', 'b', 0};
2709  U4 origin = __LINE__;
2710  __msan_set_origin(w, sizeof(w), origin);
2711  __msan_poison(&w[2], sizeof(wchar_t));
2712  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2713}
2714
2715#if MSAN_HAS_M128
2716TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2717  __m128 x, y;
2718  U4 origin = __LINE__;
2719  __msan_set_origin(&x, sizeof(x), origin);
2720  __msan_poison(&x, sizeof(x));
2721  __builtin_ia32_storeups((float*)&y, x);
2722  EXPECT_POISONED_O(y, origin);
2723}
2724#endif
2725
2726NOINLINE void RecursiveMalloc(int depth) {
2727  static int count;
2728  count++;
2729  if ((count % (1024 * 1024)) == 0)
2730    printf("RecursiveMalloc: %d\n", count);
2731  int *x1 = new int;
2732  int *x2 = new int;
2733  break_optimization(x1);
2734  break_optimization(x2);
2735  if (depth > 0) {
2736    RecursiveMalloc(depth-1);
2737    RecursiveMalloc(depth-1);
2738  }
2739  delete x1;
2740  delete x2;
2741}
2742
2743TEST(MemorySanitizer, CallocOverflow) {
2744  size_t kArraySize = 4096;
2745  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2746  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2747  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2748  EXPECT_EQ(0L, Ident(p));
2749}
2750
2751TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2752  RecursiveMalloc(22);
2753}
2754