msan_test.cc revision 737da2f031badfad5bc5b762cc50d789fbcb6ef8 
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, LargeRet) {
528  LargeStruct a = LargeRetTest();
529  EXPECT_POISONED(a.x[0]);
530  EXPECT_POISONED(a.x[9]);
531}
532
533TEST(MemorySanitizer, fread) {
534  char *x = new char[32];
535  FILE *f = fopen("/proc/self/stat", "r");
536  assert(f);
537  fread(x, 1, 32, f);
538  EXPECT_NOT_POISONED(x[0]);
539  EXPECT_NOT_POISONED(x[16]);
540  EXPECT_NOT_POISONED(x[31]);
541  fclose(f);
542  delete x;
543}
544
545TEST(MemorySanitizer, read) {
546  char *x = new char[32];
547  int fd = open("/proc/self/stat", O_RDONLY);
548  assert(fd > 0);
549  int sz = read(fd, x, 32);
550  assert(sz == 32);
551  EXPECT_NOT_POISONED(x[0]);
552  EXPECT_NOT_POISONED(x[16]);
553  EXPECT_NOT_POISONED(x[31]);
554  close(fd);
555  delete x;
556}
557
558TEST(MemorySanitizer, pread) {
559  char *x = new char[32];
560  int fd = open("/proc/self/stat", O_RDONLY);
561  assert(fd > 0);
562  int sz = pread(fd, x, 32, 0);
563  assert(sz == 32);
564  EXPECT_NOT_POISONED(x[0]);
565  EXPECT_NOT_POISONED(x[16]);
566  EXPECT_NOT_POISONED(x[31]);
567  close(fd);
568  delete x;
569}
570
571TEST(MemorySanitizer, readv) {
572  char buf[2011];
573  struct iovec iov[2];
574  iov[0].iov_base = buf + 1;
575  iov[0].iov_len = 5;
576  iov[1].iov_base = buf + 10;
577  iov[1].iov_len = 2000;
578  int fd = open("/proc/self/stat", O_RDONLY);
579  assert(fd > 0);
580  int sz = readv(fd, iov, 2);
581  ASSERT_LT(sz, 5 + 2000);
582  ASSERT_GT(sz, iov[0].iov_len);
583  EXPECT_POISONED(buf[0]);
584  EXPECT_NOT_POISONED(buf[1]);
585  EXPECT_NOT_POISONED(buf[5]);
586  EXPECT_POISONED(buf[6]);
587  EXPECT_POISONED(buf[9]);
588  EXPECT_NOT_POISONED(buf[10]);
589  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
590  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
591  close(fd);
592}
593
594TEST(MemorySanitizer, preadv) {
595  char buf[2011];
596  struct iovec iov[2];
597  iov[0].iov_base = buf + 1;
598  iov[0].iov_len = 5;
599  iov[1].iov_base = buf + 10;
600  iov[1].iov_len = 2000;
601  int fd = open("/proc/self/stat", O_RDONLY);
602  assert(fd > 0);
603  int sz = preadv(fd, iov, 2, 3);
604  ASSERT_LT(sz, 5 + 2000);
605  ASSERT_GT(sz, iov[0].iov_len);
606  EXPECT_POISONED(buf[0]);
607  EXPECT_NOT_POISONED(buf[1]);
608  EXPECT_NOT_POISONED(buf[5]);
609  EXPECT_POISONED(buf[6]);
610  EXPECT_POISONED(buf[9]);
611  EXPECT_NOT_POISONED(buf[10]);
612  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
613  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
614  close(fd);
615}
616
617// FIXME: fails now.
618TEST(MemorySanitizer, DISABLED_ioctl) {
619  struct winsize ws;
620  EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0);
621  EXPECT_NOT_POISONED(ws.ws_col);
622}
623
624TEST(MemorySanitizer, readlink) {
625  char *x = new char[1000];
626  readlink("/proc/self/exe", x, 1000);
627  EXPECT_NOT_POISONED(x[0]);
628  delete [] x;
629}
630
631
632TEST(MemorySanitizer, stat) {
633  struct stat* st = new struct stat;
634  int res = stat("/proc/self/stat", st);
635  assert(!res);
636  EXPECT_NOT_POISONED(st->st_dev);
637  EXPECT_NOT_POISONED(st->st_mode);
638  EXPECT_NOT_POISONED(st->st_size);
639}
640
641TEST(MemorySanitizer, statfs) {
642  struct statfs* st = new struct statfs;
643  int res = statfs("/", st);
644  assert(!res);
645  EXPECT_NOT_POISONED(st->f_type);
646  EXPECT_NOT_POISONED(st->f_bfree);
647  EXPECT_NOT_POISONED(st->f_namelen);
648}
649
650TEST(MemorySanitizer, pipe) {
651  int* pipefd = new int[2];
652  int res = pipe(pipefd);
653  assert(!res);
654  EXPECT_NOT_POISONED(pipefd[0]);
655  EXPECT_NOT_POISONED(pipefd[1]);
656  close(pipefd[0]);
657  close(pipefd[1]);
658}
659
660TEST(MemorySanitizer, pipe2) {
661  int* pipefd = new int[2];
662  int res = pipe2(pipefd, O_NONBLOCK);
663  assert(!res);
664  EXPECT_NOT_POISONED(pipefd[0]);
665  EXPECT_NOT_POISONED(pipefd[1]);
666  close(pipefd[0]);
667  close(pipefd[1]);
668}
669
670TEST(MemorySanitizer, socketpair) {
671  int sv[2];
672  int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
673  assert(!res);
674  EXPECT_NOT_POISONED(sv[0]);
675  EXPECT_NOT_POISONED(sv[1]);
676  close(sv[0]);
677  close(sv[1]);
678}
679
680TEST(MemorySanitizer, bind_getsockname) {
681  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
682
683  struct sockaddr_in sai;
684  memset(&sai, 0, sizeof(sai));
685  sai.sin_family = AF_UNIX;
686  int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai));
687
688  assert(!res);
689  char buf[200];
690  socklen_t addrlen;
691  EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen));
692
693  addrlen = sizeof(buf);
694  res = getsockname(sock, (struct sockaddr *)&buf, &addrlen);
695  EXPECT_NOT_POISONED(addrlen);
696  EXPECT_NOT_POISONED(buf[0]);
697  EXPECT_NOT_POISONED(buf[addrlen - 1]);
698  EXPECT_POISONED(buf[addrlen]);
699  close(sock);
700}
701
702TEST(MemorySanitizer, accept) {
703  int listen_socket = socket(AF_INET, SOCK_STREAM, 0);
704  ASSERT_LT(0, listen_socket);
705
706  struct sockaddr_in sai;
707  sai.sin_family = AF_INET;
708  sai.sin_port = 0;
709  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
710  int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai));
711  ASSERT_EQ(0, res);
712
713  res = listen(listen_socket, 1);
714  ASSERT_EQ(0, res);
715
716  socklen_t sz = sizeof(sai);
717  res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz);
718  ASSERT_EQ(0, res);
719  ASSERT_EQ(sizeof(sai), sz);
720
721  int connect_socket = socket(AF_INET, SOCK_STREAM, 0);
722  ASSERT_LT(0, connect_socket);
723  res = fcntl(connect_socket, F_SETFL, O_NONBLOCK);
724  ASSERT_EQ(0, res);
725  res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai));
726  ASSERT_EQ(-1, res);
727  ASSERT_EQ(EINPROGRESS, errno);
728
729  __msan_poison(&sai, sizeof(sai));
730  int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz);
731  ASSERT_LT(0, new_sock);
732  ASSERT_EQ(sizeof(sai), sz);
733  EXPECT_NOT_POISONED(sai);
734
735  __msan_poison(&sai, sizeof(sai));
736  res = getpeername(new_sock, (struct sockaddr *)&sai, &sz);
737  ASSERT_EQ(0, res);
738  ASSERT_EQ(sizeof(sai), sz);
739  EXPECT_NOT_POISONED(sai);
740
741  close(new_sock);
742  close(connect_socket);
743  close(listen_socket);
744}
745
746TEST(MemorySanitizer, getaddrinfo) {
747  struct addrinfo *ai;
748  struct addrinfo hints;
749  memset(&hints, 0, sizeof(hints));
750  hints.ai_family = AF_INET;
751  int res = getaddrinfo("localhost", NULL, &hints, &ai);
752  ASSERT_EQ(0, res);
753  EXPECT_NOT_POISONED(*ai);
754  ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen);
755  EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr);
756}
757
758TEST(MemorySanitizer, getnameinfo) {
759  struct sockaddr_in sai;
760  sai.sin_family = AF_INET;
761  sai.sin_port = 80;
762  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
763  char host[500];
764  char serv[500];
765  int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host,
766                        sizeof(host), serv, sizeof(serv), 0);
767  ASSERT_EQ(0, res);
768  EXPECT_NOT_POISONED(host[0]);
769  EXPECT_POISONED(host[sizeof(host) - 1]);
770
771  ASSERT_NE(0, strlen(host));
772  EXPECT_NOT_POISONED(serv[0]);
773  EXPECT_POISONED(serv[sizeof(serv) - 1]);
774  ASSERT_NE(0, strlen(serv));
775}
776
777#define EXPECT_HOSTENT_NOT_POISONED(he)        \
778  do {                                         \
779    EXPECT_NOT_POISONED(*(he));                \
780    ASSERT_NE((void *) 0, (he)->h_name);       \
781    ASSERT_NE((void *) 0, (he)->h_aliases);    \
782    ASSERT_NE((void *) 0, (he)->h_addr_list);  \
783    EXPECT_NOT_POISONED(strlen((he)->h_name)); \
784    char **p = (he)->h_aliases;                \
785    while (*p) {                               \
786      EXPECT_NOT_POISONED(strlen(*p));         \
787      ++p;                                     \
788    }                                          \
789    char **q = (he)->h_addr_list;              \
790    while (*q) {                               \
791      EXPECT_NOT_POISONED(*q[0]);              \
792      ++q;                                     \
793    }                                          \
794    EXPECT_NOT_POISONED(*q);                   \
795  } while (0)
796
797TEST(MemorySanitizer, gethostent) {
798  struct hostent *he = gethostent();
799  ASSERT_NE((void *)NULL, he);
800  EXPECT_HOSTENT_NOT_POISONED(he);
801}
802
803#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME
804
805TEST(MemorySanitizer, gethostbyname) {
806  struct hostent *he = gethostbyname("localhost");
807  ASSERT_NE((void *)NULL, he);
808  EXPECT_HOSTENT_NOT_POISONED(he);
809}
810
811#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME
812
813TEST(MemorySanitizer, gethostbyname2) {
814  struct hostent *he = gethostbyname2("localhost", AF_INET);
815  ASSERT_NE((void *)NULL, he);
816  EXPECT_HOSTENT_NOT_POISONED(he);
817}
818
819TEST(MemorySanitizer, gethostbyaddr) {
820  in_addr_t addr = inet_addr("127.0.0.1");
821  EXPECT_NOT_POISONED(addr);
822  struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
823  ASSERT_NE((void *)NULL, he);
824  EXPECT_HOSTENT_NOT_POISONED(he);
825}
826
827TEST(MemorySanitizer, gethostent_r) {
828  char buf[2000];
829  struct hostent he;
830  struct hostent *result;
831  int err;
832  int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
833  ASSERT_EQ(0, res);
834  EXPECT_NOT_POISONED(result);
835  ASSERT_NE((void *)NULL, result);
836  EXPECT_HOSTENT_NOT_POISONED(result);
837  EXPECT_NOT_POISONED(err);
838}
839
840TEST(MemorySanitizer, gethostbyname_r) {
841  char buf[2000];
842  struct hostent he;
843  struct hostent *result;
844  int err;
845  int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
846  ASSERT_EQ(0, res);
847  EXPECT_NOT_POISONED(result);
848  ASSERT_NE((void *)NULL, result);
849  EXPECT_HOSTENT_NOT_POISONED(result);
850  EXPECT_NOT_POISONED(err);
851}
852
853TEST(MemorySanitizer, gethostbyname2_r) {
854  char buf[2000];
855  struct hostent he;
856  struct hostent *result;
857  int err;
858  int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
859                             &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, gethostbyaddr_r) {
868  char buf[2000];
869  struct hostent he;
870  struct hostent *result;
871  int err;
872  in_addr_t addr = inet_addr("127.0.0.1");
873  EXPECT_NOT_POISONED(addr);
874  int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
875                            &result, &err);
876  ASSERT_EQ(0, res);
877  EXPECT_NOT_POISONED(result);
878  ASSERT_NE((void *)NULL, result);
879  EXPECT_HOSTENT_NOT_POISONED(result);
880  EXPECT_NOT_POISONED(err);
881}
882
883TEST(MemorySanitizer, getsockopt) {
884  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
885  struct linger l[2];
886  socklen_t sz = sizeof(l[0]);
887  int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
888  ASSERT_EQ(0, res);
889  ASSERT_EQ(sizeof(l[0]), sz);
890  EXPECT_NOT_POISONED(l[0]);
891  EXPECT_POISONED(*(char *)(l + 1));
892}
893
894TEST(MemorySanitizer, getcwd) {
895  char path[PATH_MAX + 1];
896  char* res = getcwd(path, sizeof(path));
897  assert(res);
898  EXPECT_NOT_POISONED(path[0]);
899}
900
901TEST(MemorySanitizer, getcwd_gnu) {
902  char* res = getcwd(NULL, 0);
903  assert(res);
904  EXPECT_NOT_POISONED(res[0]);
905  free(res);
906}
907
908TEST(MemorySanitizer, get_current_dir_name) {
909  char* res = get_current_dir_name();
910  assert(res);
911  EXPECT_NOT_POISONED(res[0]);
912  free(res);
913}
914
915TEST(MemorySanitizer, readdir) {
916  DIR *dir = opendir(".");
917  struct dirent *d = readdir(dir);
918  assert(d);
919  EXPECT_NOT_POISONED(d->d_name[0]);
920  closedir(dir);
921}
922
923TEST(MemorySanitizer, readdir_r) {
924  DIR *dir = opendir(".");
925  struct dirent d;
926  struct dirent *pd;
927  int res = readdir_r(dir, &d, &pd);
928  assert(!res);
929  EXPECT_NOT_POISONED(pd);
930  EXPECT_NOT_POISONED(d.d_name[0]);
931  closedir(dir);
932}
933
934TEST(MemorySanitizer, realpath) {
935  const char* relpath = ".";
936  char path[PATH_MAX + 1];
937  char* res = realpath(relpath, path);
938  assert(res);
939  EXPECT_NOT_POISONED(path[0]);
940}
941
942TEST(MemorySanitizer, memcpy) {
943  char* x = new char[2];
944  char* y = new char[2];
945  x[0] = 1;
946  x[1] = *GetPoisoned<char>();
947  memcpy(y, x, 2);
948  EXPECT_NOT_POISONED(y[0]);
949  EXPECT_POISONED(y[1]);
950}
951
952TEST(MemorySanitizer, memmove) {
953  char* x = new char[2];
954  char* y = new char[2];
955  x[0] = 1;
956  x[1] = *GetPoisoned<char>();
957  memmove(y, x, 2);
958  EXPECT_NOT_POISONED(y[0]);
959  EXPECT_POISONED(y[1]);
960}
961
962TEST(MemorySanitizer, bcopy) {
963  char* x = new char[2];
964  char* y = new char[2];
965  x[0] = 1;
966  x[1] = *GetPoisoned<char>();
967  bcopy(x, y, 2);
968  EXPECT_NOT_POISONED(y[0]);
969  EXPECT_POISONED(y[1]);
970}
971
972TEST(MemorySanitizer, strdup) {
973  char buf[4] = "abc";
974  __msan_poison(buf + 2, sizeof(*buf));
975  char *x = strdup(buf);
976  EXPECT_NOT_POISONED(x[0]);
977  EXPECT_NOT_POISONED(x[1]);
978  EXPECT_POISONED(x[2]);
979  EXPECT_NOT_POISONED(x[3]);
980  free(x);
981}
982
983TEST(MemorySanitizer, strndup) {
984  char buf[4] = "abc";
985  __msan_poison(buf + 2, sizeof(*buf));
986  char *x = strndup(buf, 3);
987  EXPECT_NOT_POISONED(x[0]);
988  EXPECT_NOT_POISONED(x[1]);
989  EXPECT_POISONED(x[2]);
990  EXPECT_NOT_POISONED(x[3]);
991  free(x);
992}
993
994TEST(MemorySanitizer, strndup_short) {
995  char buf[4] = "abc";
996  __msan_poison(buf + 1, sizeof(*buf));
997  __msan_poison(buf + 2, sizeof(*buf));
998  char *x = strndup(buf, 2);
999  EXPECT_NOT_POISONED(x[0]);
1000  EXPECT_POISONED(x[1]);
1001  EXPECT_NOT_POISONED(x[2]);
1002  free(x);
1003}
1004
1005
1006template<class T, int size>
1007void TestOverlapMemmove() {
1008  T *x = new T[size];
1009  assert(size >= 3);
1010  x[2] = 0;
1011  memmove(x, x + 1, (size - 1) * sizeof(T));
1012  EXPECT_NOT_POISONED(x[1]);
1013  if (!__msan_has_dynamic_component()) {
1014    // FIXME: under DR we will lose this information
1015    // because accesses in memmove will unpoisin the shadow.
1016    // We need to use our own memove implementation instead of libc's.
1017    EXPECT_POISONED(x[0]);
1018    EXPECT_POISONED(x[2]);
1019  }
1020  delete [] x;
1021}
1022
1023TEST(MemorySanitizer, overlap_memmove) {
1024  TestOverlapMemmove<U1, 10>();
1025  TestOverlapMemmove<U1, 1000>();
1026  TestOverlapMemmove<U8, 4>();
1027  TestOverlapMemmove<U8, 1000>();
1028}
1029
1030TEST(MemorySanitizer, strcpy) {  // NOLINT
1031  char* x = new char[3];
1032  char* y = new char[3];
1033  x[0] = 'a';
1034  x[1] = *GetPoisoned<char>(1, 1);
1035  x[2] = 0;
1036  strcpy(y, x);  // NOLINT
1037  EXPECT_NOT_POISONED(y[0]);
1038  EXPECT_POISONED(y[1]);
1039  EXPECT_NOT_POISONED(y[2]);
1040}
1041
1042TEST(MemorySanitizer, strncpy) {  // NOLINT
1043  char* x = new char[3];
1044  char* y = new char[3];
1045  x[0] = 'a';
1046  x[1] = *GetPoisoned<char>(1, 1);
1047  x[2] = 0;
1048  strncpy(y, x, 2);  // NOLINT
1049  EXPECT_NOT_POISONED(y[0]);
1050  EXPECT_POISONED(y[1]);
1051  EXPECT_POISONED(y[2]);
1052}
1053
1054TEST(MemorySanitizer, stpcpy) {  // NOLINT
1055  char* x = new char[3];
1056  char* y = new char[3];
1057  x[0] = 'a';
1058  x[1] = *GetPoisoned<char>(1, 1);
1059  x[2] = 0;
1060  char *res = stpcpy(y, x);  // NOLINT
1061  ASSERT_EQ(res, y + 2);
1062  EXPECT_NOT_POISONED(y[0]);
1063  EXPECT_POISONED(y[1]);
1064  EXPECT_NOT_POISONED(y[2]);
1065}
1066
1067TEST(MemorySanitizer, strtol) {
1068  char *e;
1069  assert(1 == strtol("1", &e, 10));
1070  EXPECT_NOT_POISONED((S8) e);
1071}
1072
1073TEST(MemorySanitizer, strtoll) {
1074  char *e;
1075  assert(1 == strtoll("1", &e, 10));
1076  EXPECT_NOT_POISONED((S8) e);
1077}
1078
1079TEST(MemorySanitizer, strtoul) {
1080  char *e;
1081  assert(1 == strtoul("1", &e, 10));
1082  EXPECT_NOT_POISONED((S8) e);
1083}
1084
1085TEST(MemorySanitizer, strtoull) {
1086  char *e;
1087  assert(1 == strtoull("1", &e, 10));
1088  EXPECT_NOT_POISONED((S8) e);
1089}
1090
1091TEST(MemorySanitizer, strtoimax) {
1092  char *e;
1093  assert(1 == strtoimax("1", &e, 10));
1094  EXPECT_NOT_POISONED((S8) e);
1095}
1096
1097TEST(MemorySanitizer, strtoumax) {
1098  char *e;
1099  assert(1 == strtoumax("1", &e, 10));
1100  EXPECT_NOT_POISONED((S8) e);
1101}
1102
1103TEST(MemorySanitizer, strtod) {
1104  char *e;
1105  assert(0 != strtod("1.5", &e));
1106  EXPECT_NOT_POISONED((S8) e);
1107}
1108
1109TEST(MemorySanitizer, strtof) {
1110  char *e;
1111  assert(0 != strtof("1.5", &e));
1112  EXPECT_NOT_POISONED((S8) e);
1113}
1114
1115TEST(MemorySanitizer, strtold) {
1116  char *e;
1117  assert(0 != strtold("1.5", &e));
1118  EXPECT_NOT_POISONED((S8) e);
1119}
1120
1121TEST(MemorySanitizer, modf) {
1122  double x, y;
1123  x = modf(2.1, &y);
1124  EXPECT_NOT_POISONED(y);
1125}
1126
1127TEST(MemorySanitizer, modff) {
1128  float x, y;
1129  x = modff(2.1, &y);
1130  EXPECT_NOT_POISONED(y);
1131}
1132
1133TEST(MemorySanitizer, modfl) {
1134  long double x, y;
1135  x = modfl(2.1, &y);
1136  EXPECT_NOT_POISONED(y);
1137}
1138
1139TEST(MemorySanitizer, sprintf) {  // NOLINT
1140  char buff[10];
1141  break_optimization(buff);
1142  EXPECT_POISONED(buff[0]);
1143  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1144  assert(res == 7);
1145  assert(buff[0] == '1');
1146  assert(buff[1] == '2');
1147  assert(buff[2] == '3');
1148  assert(buff[6] == '7');
1149  assert(buff[7] == 0);
1150  EXPECT_POISONED(buff[8]);
1151}
1152
1153TEST(MemorySanitizer, snprintf) {
1154  char buff[10];
1155  break_optimization(buff);
1156  EXPECT_POISONED(buff[0]);
1157  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1158  assert(res == 7);
1159  assert(buff[0] == '1');
1160  assert(buff[1] == '2');
1161  assert(buff[2] == '3');
1162  assert(buff[6] == '7');
1163  assert(buff[7] == 0);
1164  EXPECT_POISONED(buff[8]);
1165}
1166
1167TEST(MemorySanitizer, swprintf) {
1168  wchar_t buff[10];
1169  assert(sizeof(wchar_t) == 4);
1170  break_optimization(buff);
1171  EXPECT_POISONED(buff[0]);
1172  int res = swprintf(buff, 9, L"%d", 1234567);
1173  assert(res == 7);
1174  assert(buff[0] == '1');
1175  assert(buff[1] == '2');
1176  assert(buff[2] == '3');
1177  assert(buff[6] == '7');
1178  assert(buff[7] == 0);
1179  EXPECT_POISONED(buff[8]);
1180}
1181
1182TEST(MemorySanitizer, asprintf) {  // NOLINT
1183  char *pbuf;
1184  EXPECT_POISONED(pbuf);
1185  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1186  assert(res == 7);
1187  EXPECT_NOT_POISONED(pbuf);
1188  assert(pbuf[0] == '1');
1189  assert(pbuf[1] == '2');
1190  assert(pbuf[2] == '3');
1191  assert(pbuf[6] == '7');
1192  assert(pbuf[7] == 0);
1193  free(pbuf);
1194}
1195
1196TEST(MemorySanitizer, wcstombs) {
1197  const wchar_t *x = L"abc";
1198  char buff[10];
1199  int res = wcstombs(buff, x, 4);
1200  EXPECT_EQ(res, 3);
1201  EXPECT_EQ(buff[0], 'a');
1202  EXPECT_EQ(buff[1], 'b');
1203  EXPECT_EQ(buff[2], 'c');
1204}
1205
1206TEST(MemorySanitizer, wcsrtombs) {
1207  const wchar_t *x = L"abc";
1208  const wchar_t *p = x;
1209  char buff[10];
1210  mbstate_t mbs;
1211  int res = wcsrtombs(buff, &p, 4, &mbs);
1212  EXPECT_EQ(res, 3);
1213  EXPECT_EQ(buff[0], 'a');
1214  EXPECT_EQ(buff[1], 'b');
1215  EXPECT_EQ(buff[2], 'c');
1216}
1217
1218TEST(MemorySanitizer, wcsnrtombs) {
1219  const wchar_t *x = L"abc";
1220  const wchar_t *p = x;
1221  char buff[10];
1222  mbstate_t mbs;
1223  int res = wcsnrtombs(buff, &p, 2, 4, &mbs);
1224  EXPECT_EQ(res, 2);
1225  EXPECT_EQ(buff[0], 'a');
1226  EXPECT_EQ(buff[1], 'b');
1227  EXPECT_EQ(buff[2], 0);
1228}
1229
1230TEST(MemorySanitizer, mbtowc) {
1231  const char *x = "abc";
1232  wchar_t wx;
1233  int res = mbtowc(&wx, x, 3);
1234  EXPECT_GT(res, 0);
1235  EXPECT_NOT_POISONED(wx);
1236}
1237
1238TEST(MemorySanitizer, mbrtowc) {
1239  const char *x = "abc";
1240  wchar_t wx;
1241  mbstate_t mbs;
1242  memset(&mbs, 0, sizeof(mbs));
1243  int res = mbrtowc(&wx, x, 3, &mbs);
1244  EXPECT_GT(res, 0);
1245  EXPECT_NOT_POISONED(wx);
1246}
1247
1248TEST(MemorySanitizer, gettimeofday) {
1249  struct timeval tv;
1250  struct timezone tz;
1251  break_optimization(&tv);
1252  break_optimization(&tz);
1253  assert(sizeof(tv) == 16);
1254  assert(sizeof(tz) == 8);
1255  EXPECT_POISONED(tv.tv_sec);
1256  EXPECT_POISONED(tv.tv_usec);
1257  EXPECT_POISONED(tz.tz_minuteswest);
1258  EXPECT_POISONED(tz.tz_dsttime);
1259  assert(0 == gettimeofday(&tv, &tz));
1260  EXPECT_NOT_POISONED(tv.tv_sec);
1261  EXPECT_NOT_POISONED(tv.tv_usec);
1262  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1263  EXPECT_NOT_POISONED(tz.tz_dsttime);
1264}
1265
1266TEST(MemorySanitizer, clock_gettime) {
1267  struct timespec tp;
1268  EXPECT_POISONED(tp.tv_sec);
1269  EXPECT_POISONED(tp.tv_nsec);
1270  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1271  EXPECT_NOT_POISONED(tp.tv_sec);
1272  EXPECT_NOT_POISONED(tp.tv_nsec);
1273}
1274
1275TEST(MemorySanitizer, clock_getres) {
1276  struct timespec tp;
1277  EXPECT_POISONED(tp.tv_sec);
1278  EXPECT_POISONED(tp.tv_nsec);
1279  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1280  EXPECT_POISONED(tp.tv_sec);
1281  EXPECT_POISONED(tp.tv_nsec);
1282  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1283  EXPECT_NOT_POISONED(tp.tv_sec);
1284  EXPECT_NOT_POISONED(tp.tv_nsec);
1285}
1286
1287TEST(MemorySanitizer, getitimer) {
1288  struct itimerval it1, it2;
1289  int res;
1290  EXPECT_POISONED(it1.it_interval.tv_sec);
1291  EXPECT_POISONED(it1.it_interval.tv_usec);
1292  EXPECT_POISONED(it1.it_value.tv_sec);
1293  EXPECT_POISONED(it1.it_value.tv_usec);
1294  res = getitimer(ITIMER_VIRTUAL, &it1);
1295  assert(!res);
1296  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1297  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1298  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1299  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1300
1301  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1302  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1303
1304  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1305  assert(!res);
1306  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1307  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1308  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1309  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1310
1311  // Check that old_value can be 0, and disable the timer.
1312  memset(&it1, 0, sizeof(it1));
1313  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1314  assert(!res);
1315}
1316
1317TEST(MemorySanitizer, time) {
1318  time_t t;
1319  EXPECT_POISONED(t);
1320  time_t t2 = time(&t);
1321  assert(t2 != (time_t)-1);
1322  EXPECT_NOT_POISONED(t);
1323}
1324
1325TEST(MemorySanitizer, localtime) {
1326  time_t t = 123;
1327  struct tm *time = localtime(&t);
1328  assert(time != 0);
1329  EXPECT_NOT_POISONED(time->tm_sec);
1330  EXPECT_NOT_POISONED(time->tm_hour);
1331  EXPECT_NOT_POISONED(time->tm_year);
1332  EXPECT_NOT_POISONED(time->tm_isdst);
1333}
1334
1335TEST(MemorySanitizer, localtime_r) {
1336  time_t t = 123;
1337  struct tm time;
1338  struct tm *res = localtime_r(&t, &time);
1339  assert(res != 0);
1340  EXPECT_NOT_POISONED(time.tm_sec);
1341  EXPECT_NOT_POISONED(time.tm_hour);
1342  EXPECT_NOT_POISONED(time.tm_year);
1343  EXPECT_NOT_POISONED(time.tm_isdst);
1344}
1345
1346TEST(MemorySanitizer, mmap) {
1347  const int size = 4096;
1348  void *p1, *p2;
1349  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1350  __msan_poison(p1, size);
1351  munmap(p1, size);
1352  for (int i = 0; i < 1000; i++) {
1353    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1354    if (p2 == p1)
1355      break;
1356    else
1357      munmap(p2, size);
1358  }
1359  if (p1 == p2) {
1360    EXPECT_NOT_POISONED(*(char*)p2);
1361    munmap(p2, size);
1362  }
1363}
1364
1365// FIXME: enable and add ecvt.
1366// FIXME: check why msandr does nt handle fcvt.
1367TEST(MemorySanitizer, fcvt) {
1368  int a, b;
1369  break_optimization(&a);
1370  break_optimization(&b);
1371  EXPECT_POISONED(a);
1372  EXPECT_POISONED(b);
1373  char *str = fcvt(12345.6789, 10, &a, &b);
1374  EXPECT_NOT_POISONED(a);
1375  EXPECT_NOT_POISONED(b);
1376}
1377
1378TEST(MemorySanitizer, frexp) {
1379  int x;
1380  x = *GetPoisoned<int>();
1381  double r = frexp(1.1, &x);
1382  EXPECT_NOT_POISONED(r);
1383  EXPECT_NOT_POISONED(x);
1384
1385  x = *GetPoisoned<int>();
1386  float rf = frexpf(1.1, &x);
1387  EXPECT_NOT_POISONED(rf);
1388  EXPECT_NOT_POISONED(x);
1389
1390  x = *GetPoisoned<int>();
1391  double rl = frexpl(1.1, &x);
1392  EXPECT_NOT_POISONED(rl);
1393  EXPECT_NOT_POISONED(x);
1394}
1395
1396namespace {
1397
1398static int cnt;
1399
1400void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1401  assert(signo == SIGPROF);
1402  assert(si);
1403  EXPECT_NOT_POISONED(si->si_errno);
1404  EXPECT_NOT_POISONED(si->si_pid);
1405#if __linux__
1406# if defined(__x86_64__)
1407  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1408# elif defined(__i386__)
1409  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1410# endif
1411#endif
1412  ++cnt;
1413}
1414
1415TEST(MemorySanitizer, sigaction) {
1416  struct sigaction act = {};
1417  struct sigaction oldact = {};
1418  struct sigaction origact = {};
1419
1420  sigaction(SIGPROF, 0, &origact);
1421
1422  act.sa_flags |= SA_SIGINFO;
1423  act.sa_sigaction = &SigactionHandler;
1424  sigaction(SIGPROF, &act, 0);
1425
1426  kill(getpid(), SIGPROF);
1427
1428  act.sa_flags &= ~SA_SIGINFO;
1429  act.sa_handler = SIG_DFL;
1430  sigaction(SIGPROF, &act, 0);
1431
1432  act.sa_flags &= ~SA_SIGINFO;
1433  act.sa_handler = SIG_IGN;
1434  sigaction(SIGPROF, &act, &oldact);
1435  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1436  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1437  kill(getpid(), SIGPROF);
1438
1439  act.sa_flags |= SA_SIGINFO;
1440  act.sa_sigaction = &SigactionHandler;
1441  sigaction(SIGPROF, &act, &oldact);
1442  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1443  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1444  kill(getpid(), SIGPROF);
1445
1446  act.sa_flags &= ~SA_SIGINFO;
1447  act.sa_handler = SIG_DFL;
1448  sigaction(SIGPROF, &act, &oldact);
1449  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1450  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1451  EXPECT_EQ(2, cnt);
1452
1453  sigaction(SIGPROF, &origact, 0);
1454}
1455
1456} // namespace
1457
1458struct StructWithDtor {
1459  ~StructWithDtor();
1460};
1461
1462NOINLINE StructWithDtor::~StructWithDtor() {
1463  break_optimization(0);
1464}
1465
1466TEST(MemorySanitizer, Invoke) {
1467  StructWithDtor s;  // Will cause the calls to become invokes.
1468  EXPECT_NOT_POISONED(0);
1469  EXPECT_POISONED(*GetPoisoned<int>());
1470  EXPECT_NOT_POISONED(0);
1471  EXPECT_POISONED(*GetPoisoned<int>());
1472  EXPECT_POISONED(ReturnPoisoned<S4>());
1473}
1474
1475TEST(MemorySanitizer, ptrtoint) {
1476  // Test that shadow is propagated through pointer-to-integer conversion.
1477  void* p = (void*)0xABCD;
1478  __msan_poison(((char*)&p) + 1, sizeof(p));
1479  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1480
1481  void* q = (void*)0xABCD;
1482  __msan_poison(&q, sizeof(q) - 1);
1483  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1484}
1485
1486static void vaargsfn2(int guard, ...) {
1487  va_list vl;
1488  va_start(vl, guard);
1489  EXPECT_NOT_POISONED(va_arg(vl, int));
1490  EXPECT_NOT_POISONED(va_arg(vl, int));
1491  EXPECT_NOT_POISONED(va_arg(vl, int));
1492  EXPECT_POISONED(va_arg(vl, double));
1493  va_end(vl);
1494}
1495
1496static void vaargsfn(int guard, ...) {
1497  va_list vl;
1498  va_start(vl, guard);
1499  EXPECT_NOT_POISONED(va_arg(vl, int));
1500  EXPECT_POISONED(va_arg(vl, int));
1501  // The following call will overwrite __msan_param_tls.
1502  // Checks after it test that arg shadow was somehow saved across the call.
1503  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1504  EXPECT_NOT_POISONED(va_arg(vl, int));
1505  EXPECT_POISONED(va_arg(vl, int));
1506  va_end(vl);
1507}
1508
1509TEST(MemorySanitizer, VAArgTest) {
1510  int* x = GetPoisoned<int>();
1511  int* y = GetPoisoned<int>(4);
1512  vaargsfn(1, 13, *x, 42, *y);
1513}
1514
1515static void vaargsfn_many(int guard, ...) {
1516  va_list vl;
1517  va_start(vl, guard);
1518  EXPECT_NOT_POISONED(va_arg(vl, int));
1519  EXPECT_POISONED(va_arg(vl, int));
1520  EXPECT_NOT_POISONED(va_arg(vl, int));
1521  EXPECT_NOT_POISONED(va_arg(vl, int));
1522  EXPECT_NOT_POISONED(va_arg(vl, int));
1523  EXPECT_NOT_POISONED(va_arg(vl, int));
1524  EXPECT_NOT_POISONED(va_arg(vl, int));
1525  EXPECT_NOT_POISONED(va_arg(vl, int));
1526  EXPECT_NOT_POISONED(va_arg(vl, int));
1527  EXPECT_POISONED(va_arg(vl, int));
1528  va_end(vl);
1529}
1530
1531TEST(MemorySanitizer, VAArgManyTest) {
1532  int* x = GetPoisoned<int>();
1533  int* y = GetPoisoned<int>(4);
1534  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1535}
1536
1537static void vaargsfn_pass2(va_list vl) {
1538  EXPECT_NOT_POISONED(va_arg(vl, int));
1539  EXPECT_NOT_POISONED(va_arg(vl, int));
1540  EXPECT_POISONED(va_arg(vl, int));
1541}
1542
1543static void vaargsfn_pass(int guard, ...) {
1544  va_list vl;
1545  va_start(vl, guard);
1546  EXPECT_POISONED(va_arg(vl, int));
1547  vaargsfn_pass2(vl);
1548  va_end(vl);
1549}
1550
1551TEST(MemorySanitizer, VAArgPass) {
1552  int* x = GetPoisoned<int>();
1553  int* y = GetPoisoned<int>(4);
1554  vaargsfn_pass(1, *x, 2, 3, *y);
1555}
1556
1557static void vaargsfn_copy2(va_list vl) {
1558  EXPECT_NOT_POISONED(va_arg(vl, int));
1559  EXPECT_POISONED(va_arg(vl, int));
1560}
1561
1562static void vaargsfn_copy(int guard, ...) {
1563  va_list vl;
1564  va_start(vl, guard);
1565  EXPECT_NOT_POISONED(va_arg(vl, int));
1566  EXPECT_POISONED(va_arg(vl, int));
1567  va_list vl2;
1568  va_copy(vl2, vl);
1569  vaargsfn_copy2(vl2);
1570  EXPECT_NOT_POISONED(va_arg(vl, int));
1571  EXPECT_POISONED(va_arg(vl, int));
1572  va_end(vl);
1573}
1574
1575TEST(MemorySanitizer, VAArgCopy) {
1576  int* x = GetPoisoned<int>();
1577  int* y = GetPoisoned<int>(4);
1578  vaargsfn_copy(1, 2, *x, 3, *y);
1579}
1580
1581static void vaargsfn_ptr(int guard, ...) {
1582  va_list vl;
1583  va_start(vl, guard);
1584  EXPECT_NOT_POISONED(va_arg(vl, int*));
1585  EXPECT_POISONED(va_arg(vl, int*));
1586  EXPECT_NOT_POISONED(va_arg(vl, int*));
1587  EXPECT_POISONED(va_arg(vl, double*));
1588  va_end(vl);
1589}
1590
1591TEST(MemorySanitizer, VAArgPtr) {
1592  int** x = GetPoisoned<int*>();
1593  double** y = GetPoisoned<double*>(8);
1594  int z;
1595  vaargsfn_ptr(1, &z, *x, &z, *y);
1596}
1597
1598static void vaargsfn_overflow(int guard, ...) {
1599  va_list vl;
1600  va_start(vl, guard);
1601  EXPECT_NOT_POISONED(va_arg(vl, int));
1602  EXPECT_NOT_POISONED(va_arg(vl, int));
1603  EXPECT_POISONED(va_arg(vl, int));
1604  EXPECT_NOT_POISONED(va_arg(vl, int));
1605  EXPECT_NOT_POISONED(va_arg(vl, int));
1606  EXPECT_NOT_POISONED(va_arg(vl, int));
1607
1608  EXPECT_NOT_POISONED(va_arg(vl, double));
1609  EXPECT_NOT_POISONED(va_arg(vl, double));
1610  EXPECT_NOT_POISONED(va_arg(vl, double));
1611  EXPECT_POISONED(va_arg(vl, double));
1612  EXPECT_NOT_POISONED(va_arg(vl, double));
1613  EXPECT_POISONED(va_arg(vl, int*));
1614  EXPECT_NOT_POISONED(va_arg(vl, double));
1615  EXPECT_NOT_POISONED(va_arg(vl, double));
1616
1617  EXPECT_POISONED(va_arg(vl, int));
1618  EXPECT_POISONED(va_arg(vl, double));
1619  EXPECT_POISONED(va_arg(vl, int*));
1620
1621  EXPECT_NOT_POISONED(va_arg(vl, int));
1622  EXPECT_NOT_POISONED(va_arg(vl, double));
1623  EXPECT_NOT_POISONED(va_arg(vl, int*));
1624
1625  EXPECT_POISONED(va_arg(vl, int));
1626  EXPECT_POISONED(va_arg(vl, double));
1627  EXPECT_POISONED(va_arg(vl, int*));
1628
1629  va_end(vl);
1630}
1631
1632TEST(MemorySanitizer, VAArgOverflow) {
1633  int* x = GetPoisoned<int>();
1634  double* y = GetPoisoned<double>(8);
1635  int** p = GetPoisoned<int*>(16);
1636  int z;
1637  vaargsfn_overflow(1,
1638      1, 2, *x, 4, 5, 6,
1639      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1640      // the following args will overflow for sure
1641      *x, *y, *p,
1642      7, 9.9, &z,
1643      *x, *y, *p);
1644}
1645
1646static void vaargsfn_tlsoverwrite2(int guard, ...) {
1647  va_list vl;
1648  va_start(vl, guard);
1649  EXPECT_NOT_POISONED(va_arg(vl, int));
1650  va_end(vl);
1651}
1652
1653static void vaargsfn_tlsoverwrite(int guard, ...) {
1654  // This call will overwrite TLS contents unless it's backed up somewhere.
1655  vaargsfn_tlsoverwrite2(2, 42);
1656  va_list vl;
1657  va_start(vl, guard);
1658  EXPECT_POISONED(va_arg(vl, int));
1659  va_end(vl);
1660}
1661
1662TEST(MemorySanitizer, VAArgTLSOverwrite) {
1663  int* x = GetPoisoned<int>();
1664  vaargsfn_tlsoverwrite(1, *x);
1665}
1666
1667struct StructByVal {
1668  int a, b, c, d, e, f;
1669};
1670
1671NOINLINE void StructByValTestFunc(struct StructByVal s) {
1672  EXPECT_NOT_POISONED(s.a);
1673  EXPECT_POISONED(s.b);
1674  EXPECT_NOT_POISONED(s.c);
1675  EXPECT_POISONED(s.d);
1676  EXPECT_NOT_POISONED(s.e);
1677  EXPECT_POISONED(s.f);
1678}
1679
1680NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1681  StructByValTestFunc(s);
1682}
1683
1684NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1685  StructByValTestFunc(s);
1686}
1687
1688TEST(MemorySanitizer, StructByVal) {
1689  // Large aggregates are passed as "byval" pointer argument in LLVM.
1690  struct StructByVal s;
1691  s.a = 1;
1692  s.b = *GetPoisoned<int>();
1693  s.c = 2;
1694  s.d = *GetPoisoned<int>();
1695  s.e = 3;
1696  s.f = *GetPoisoned<int>();
1697  StructByValTestFunc(s);
1698  StructByValTestFunc1(s);
1699  StructByValTestFunc2(0, s);
1700}
1701
1702
1703#if MSAN_HAS_M128
1704NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1705NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1706TEST(MemorySanitizer, m128) {
1707  __m128i a = _mm_set1_epi16(0x1234);
1708  __m128i b = _mm_set1_epi16(0x7890);
1709  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1710  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1711}
1712// FIXME: add more tests for __m128i.
1713#endif  // MSAN_HAS_M128
1714
1715// We should not complain when copying this poisoned hole.
1716struct StructWithHole {
1717  U4  a;
1718  // 4-byte hole.
1719  U8  b;
1720};
1721
1722NOINLINE StructWithHole ReturnStructWithHole() {
1723  StructWithHole res;
1724  __msan_poison(&res, sizeof(res));
1725  res.a = 1;
1726  res.b = 2;
1727  return res;
1728}
1729
1730TEST(MemorySanitizer, StructWithHole) {
1731  StructWithHole a = ReturnStructWithHole();
1732  break_optimization(&a);
1733}
1734
1735template <class T>
1736NOINLINE T ReturnStruct() {
1737  T res;
1738  __msan_poison(&res, sizeof(res));
1739  res.a = 1;
1740  return res;
1741}
1742
1743template <class T>
1744NOINLINE void TestReturnStruct() {
1745  T s1 = ReturnStruct<T>();
1746  EXPECT_NOT_POISONED(s1.a);
1747  EXPECT_POISONED(s1.b);
1748}
1749
1750struct SSS1 {
1751  int a, b, c;
1752};
1753struct SSS2 {
1754  int b, a, c;
1755};
1756struct SSS3 {
1757  int b, c, a;
1758};
1759struct SSS4 {
1760  int c, b, a;
1761};
1762
1763struct SSS5 {
1764  int a;
1765  float b;
1766};
1767struct SSS6 {
1768  int a;
1769  double b;
1770};
1771struct SSS7 {
1772  S8 b;
1773  int a;
1774};
1775struct SSS8 {
1776  S2 b;
1777  S8 a;
1778};
1779
1780TEST(MemorySanitizer, IntStruct3) {
1781  TestReturnStruct<SSS1>();
1782  TestReturnStruct<SSS2>();
1783  TestReturnStruct<SSS3>();
1784  TestReturnStruct<SSS4>();
1785  TestReturnStruct<SSS5>();
1786  TestReturnStruct<SSS6>();
1787  TestReturnStruct<SSS7>();
1788  TestReturnStruct<SSS8>();
1789}
1790
1791struct LongStruct {
1792  U1 a1, b1;
1793  U2 a2, b2;
1794  U4 a4, b4;
1795  U8 a8, b8;
1796};
1797
1798NOINLINE LongStruct ReturnLongStruct1() {
1799  LongStruct res;
1800  __msan_poison(&res, sizeof(res));
1801  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1802  // leaves b1, .., b8 poisoned.
1803  return res;
1804}
1805
1806NOINLINE LongStruct ReturnLongStruct2() {
1807  LongStruct res;
1808  __msan_poison(&res, sizeof(res));
1809  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1810  // leaves a1, .., a8 poisoned.
1811  return res;
1812}
1813
1814TEST(MemorySanitizer, LongStruct) {
1815  LongStruct s1 = ReturnLongStruct1();
1816  __msan_print_shadow(&s1, sizeof(s1));
1817  EXPECT_NOT_POISONED(s1.a1);
1818  EXPECT_NOT_POISONED(s1.a2);
1819  EXPECT_NOT_POISONED(s1.a4);
1820  EXPECT_NOT_POISONED(s1.a8);
1821
1822  EXPECT_POISONED(s1.b1);
1823  EXPECT_POISONED(s1.b2);
1824  EXPECT_POISONED(s1.b4);
1825  EXPECT_POISONED(s1.b8);
1826
1827  LongStruct s2 = ReturnLongStruct2();
1828  __msan_print_shadow(&s2, sizeof(s2));
1829  EXPECT_NOT_POISONED(s2.b1);
1830  EXPECT_NOT_POISONED(s2.b2);
1831  EXPECT_NOT_POISONED(s2.b4);
1832  EXPECT_NOT_POISONED(s2.b8);
1833
1834  EXPECT_POISONED(s2.a1);
1835  EXPECT_POISONED(s2.a2);
1836  EXPECT_POISONED(s2.a4);
1837  EXPECT_POISONED(s2.a8);
1838}
1839
1840TEST(MemorySanitizer, getrlimit) {
1841  struct rlimit limit;
1842  __msan_poison(&limit, sizeof(limit));
1843  int result = getrlimit(RLIMIT_DATA, &limit);
1844  assert(result == 0);
1845  EXPECT_NOT_POISONED(limit.rlim_cur);
1846  EXPECT_NOT_POISONED(limit.rlim_max);
1847}
1848
1849TEST(MemorySanitizer, getrusage) {
1850  struct rusage usage;
1851  __msan_poison(&usage, sizeof(usage));
1852  int result = getrusage(RUSAGE_SELF, &usage);
1853  assert(result == 0);
1854  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
1855  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
1856  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
1857  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
1858  EXPECT_NOT_POISONED(usage.ru_maxrss);
1859  EXPECT_NOT_POISONED(usage.ru_minflt);
1860  EXPECT_NOT_POISONED(usage.ru_majflt);
1861  EXPECT_NOT_POISONED(usage.ru_inblock);
1862  EXPECT_NOT_POISONED(usage.ru_oublock);
1863  EXPECT_NOT_POISONED(usage.ru_nvcsw);
1864  EXPECT_NOT_POISONED(usage.ru_nivcsw);
1865}
1866
1867#ifdef __GLIBC__
1868extern char *program_invocation_name;
1869#else  // __GLIBC__
1870# error "TODO: port this"
1871#endif
1872
1873static void dladdr_testfn() {}
1874
1875TEST(MemorySanitizer, dladdr) {
1876  Dl_info info;
1877  __msan_poison(&info, sizeof(info));
1878  int result = dladdr((const void*)dladdr_testfn, &info);
1879  assert(result != 0);
1880  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
1881  if (info.dli_fname)
1882    EXPECT_NOT_POISONED(strlen(info.dli_fname));
1883  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
1884  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
1885  if (info.dli_sname)
1886    EXPECT_NOT_POISONED(strlen(info.dli_sname));
1887  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
1888}
1889
1890static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
1891  (*(int *)data)++;
1892  EXPECT_NOT_POISONED(info->dlpi_addr);
1893  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
1894  EXPECT_NOT_POISONED(info->dlpi_phnum);
1895  for (int i = 0; i < info->dlpi_phnum; ++i)
1896    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
1897  return 0;
1898}
1899
1900#ifndef MSAN_TEST_DISABLE_DLOPEN
1901
1902// Compute the path to our loadable DSO.  We assume it's in the same
1903// directory.  Only use string routines that we intercept so far to do this.
1904static int PathToLoadable(char *buf, size_t sz) {
1905  const char *basename = "libmsan_loadable.x86_64.so";
1906  char *argv0 = program_invocation_name;
1907  char *last_slash = strrchr(argv0, '/');
1908  assert(last_slash);
1909  int res =
1910      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
1911  return res < sz ? 0 : res;
1912}
1913
1914TEST(MemorySanitizer, dl_iterate_phdr) {
1915  char path[4096];
1916  int res = PathToLoadable(path, sizeof(path));
1917  assert(!res);
1918
1919  // Having at least one dlopen'ed library in the process makes this more
1920  // entertaining.
1921  void *lib = dlopen(path, RTLD_LAZY);
1922  ASSERT_NE((void*)0, lib);
1923
1924  int count = 0;
1925  int result = dl_iterate_phdr(dl_phdr_callback, &count);
1926  assert(count > 0);
1927
1928  dlclose(lib);
1929}
1930
1931
1932TEST(MemorySanitizer, dlopen) {
1933  char path[4096];
1934  int res = PathToLoadable(path, sizeof(path));
1935  assert(!res);
1936
1937  // We need to clear shadow for globals when doing dlopen.  In order to test
1938  // this, we have to poison the shadow for the DSO before we load it.  In
1939  // general this is difficult, but the loader tends to reload things in the
1940  // same place, so we open, close, and then reopen.  The global should always
1941  // start out clean after dlopen.
1942  for (int i = 0; i < 2; i++) {
1943    void *lib = dlopen(path, RTLD_LAZY);
1944    if (lib == NULL) {
1945      printf("dlerror: %s\n", dlerror());
1946      assert(lib != NULL);
1947    }
1948    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
1949    assert(get_dso_global);
1950    void **dso_global = get_dso_global();
1951    EXPECT_NOT_POISONED(*dso_global);
1952    __msan_poison(dso_global, sizeof(*dso_global));
1953    EXPECT_POISONED(*dso_global);
1954    dlclose(lib);
1955  }
1956}
1957
1958// Regression test for a crash in dlopen() interceptor.
1959TEST(MemorySanitizer, dlopenFailed) {
1960  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
1961  void *lib = dlopen(path, RTLD_LAZY);
1962  ASSERT_EQ(0, lib);
1963}
1964
1965#endif // MSAN_TEST_DISABLE_DLOPEN
1966
1967TEST(MemorySanitizer, scanf) {
1968  const char *input = "42 hello";
1969  int* d = new int;
1970  char* s = new char[7];
1971  int res = sscanf(input, "%d %5s", d, s);
1972  printf("res %d\n", res);
1973  assert(res == 2);
1974  EXPECT_NOT_POISONED(*d);
1975  EXPECT_NOT_POISONED(s[0]);
1976  EXPECT_NOT_POISONED(s[1]);
1977  EXPECT_NOT_POISONED(s[2]);
1978  EXPECT_NOT_POISONED(s[3]);
1979  EXPECT_NOT_POISONED(s[4]);
1980  EXPECT_NOT_POISONED(s[5]);
1981  EXPECT_POISONED(s[6]);
1982  delete s;
1983  delete d;
1984}
1985
1986static void *SimpleThread_threadfn(void* data) {
1987  return new int;
1988}
1989
1990TEST(MemorySanitizer, SimpleThread) {
1991  pthread_t t;
1992  void *p;
1993  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
1994  assert(!res);
1995  EXPECT_NOT_POISONED(t);
1996  res = pthread_join(t, &p);
1997  assert(!res);
1998  if (!__msan_has_dynamic_component())  // FIXME: intercept pthread_join (?).
1999    __msan_unpoison(&p, sizeof(p));
2000  delete (int*)p;
2001}
2002
2003static void *SmallStackThread_threadfn(void* data) {
2004  return 0;
2005}
2006
2007TEST(MemorySanitizer, SmallStackThread) {
2008  pthread_attr_t attr;
2009  pthread_t t;
2010  void *p;
2011  int res;
2012  res = pthread_attr_init(&attr);
2013  ASSERT_EQ(0, res);
2014  res = pthread_attr_setstacksize(&attr, 64 * 1024);
2015  ASSERT_EQ(0, res);
2016  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2017  ASSERT_EQ(0, res);
2018  res = pthread_join(t, &p);
2019  ASSERT_EQ(0, res);
2020  res = pthread_attr_destroy(&attr);
2021  ASSERT_EQ(0, res);
2022}
2023
2024TEST(MemorySanitizer, PreAllocatedStackThread) {
2025  pthread_attr_t attr;
2026  pthread_t t;
2027  int res;
2028  res = pthread_attr_init(&attr);
2029  ASSERT_EQ(0, res);
2030  void *stack;
2031  const size_t kStackSize = 64 * 1024;
2032  res = posix_memalign(&stack, 4096, kStackSize);
2033  ASSERT_EQ(0, res);
2034  res = pthread_attr_setstack(&attr, stack, kStackSize);
2035  ASSERT_EQ(0, res);
2036  // A small self-allocated stack can not be extended by the tool.
2037  // In this case pthread_create is expected to fail.
2038  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2039  EXPECT_NE(0, res);
2040  res = pthread_attr_destroy(&attr);
2041  ASSERT_EQ(0, res);
2042}
2043
2044TEST(MemorySanitizer, pthread_getschedparam) {
2045  int policy;
2046  struct sched_param param;
2047  int res = pthread_getschedparam(pthread_self(), &policy, &param);
2048  ASSERT_EQ(0, res);
2049  EXPECT_NOT_POISONED(policy);
2050  EXPECT_NOT_POISONED(param.sched_priority);
2051}
2052
2053TEST(MemorySanitizer, pthread_key_create) {
2054  pthread_key_t key;
2055  int res = pthread_key_create(&key, NULL);
2056  assert(!res);
2057  EXPECT_NOT_POISONED(key);
2058  res = pthread_key_delete(key);
2059  assert(!res);
2060}
2061
2062TEST(MemorySanitizer, posix_memalign) {
2063  void *p;
2064  EXPECT_POISONED(p);
2065  int res = posix_memalign(&p, 4096, 13);
2066  ASSERT_EQ(0, res);
2067  EXPECT_NOT_POISONED(p);
2068  free(p);
2069}
2070
2071TEST(MemorySanitizer, inet_pton) {
2072  const char *s = "1:0:0:0:0:0:0:8";
2073  unsigned char buf[sizeof(struct in6_addr)];
2074  int res = inet_pton(AF_INET6, s, buf);
2075  ASSERT_EQ(1, res);
2076  EXPECT_NOT_POISONED(buf[0]);
2077  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
2078
2079  char s_out[INET6_ADDRSTRLEN];
2080  EXPECT_POISONED(s_out[3]);
2081  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
2082  ASSERT_NE((void*)0, q);
2083  EXPECT_NOT_POISONED(s_out[3]);
2084}
2085
2086TEST(MemorySanitizer, inet_aton) {
2087  const char *s = "127.0.0.1";
2088  struct in_addr in[2];
2089  int res = inet_aton(s, in);
2090  ASSERT_NE(0, res);
2091  EXPECT_NOT_POISONED(in[0]);
2092  EXPECT_POISONED(*(char *)(in + 1));
2093}
2094
2095TEST(MemorySanitizer, uname) {
2096  struct utsname u;
2097  int res = uname(&u);
2098  assert(!res);
2099  EXPECT_NOT_POISONED(strlen(u.sysname));
2100  EXPECT_NOT_POISONED(strlen(u.nodename));
2101  EXPECT_NOT_POISONED(strlen(u.release));
2102  EXPECT_NOT_POISONED(strlen(u.version));
2103  EXPECT_NOT_POISONED(strlen(u.machine));
2104}
2105
2106TEST(MemorySanitizer, gethostname) {
2107  char buf[100];
2108  int res = gethostname(buf, 100);
2109  assert(!res);
2110  EXPECT_NOT_POISONED(strlen(buf));
2111}
2112
2113TEST(MemorySanitizer, sysinfo) {
2114  struct sysinfo info;
2115  int res = sysinfo(&info);
2116  assert(!res);
2117  EXPECT_NOT_POISONED(info);
2118}
2119
2120TEST(MemorySanitizer, getpwuid) {
2121  struct passwd *p = getpwuid(0); // root
2122  assert(p);
2123  EXPECT_NOT_POISONED(p->pw_name);
2124  assert(p->pw_name);
2125  EXPECT_NOT_POISONED(p->pw_name[0]);
2126  EXPECT_NOT_POISONED(p->pw_uid);
2127  assert(p->pw_uid == 0);
2128}
2129
2130TEST(MemorySanitizer, getpwnam_r) {
2131  struct passwd pwd;
2132  struct passwd *pwdres;
2133  char buf[10000];
2134  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
2135  assert(!res);
2136  EXPECT_NOT_POISONED(pwd.pw_name);
2137  assert(pwd.pw_name);
2138  EXPECT_NOT_POISONED(pwd.pw_name[0]);
2139  EXPECT_NOT_POISONED(pwd.pw_uid);
2140  assert(pwd.pw_uid == 0);
2141}
2142
2143TEST(MemorySanitizer, getpwnam_r_positive) {
2144  struct passwd pwd;
2145  struct passwd *pwdres;
2146  char s[5];
2147  strncpy(s, "abcd", 5);
2148  __msan_poison(s, 5);
2149  char buf[10000];
2150  int res;
2151  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2152}
2153
2154TEST(MemorySanitizer, getgrnam_r) {
2155  struct group grp;
2156  struct group *grpres;
2157  char buf[10000];
2158  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2159  assert(!res);
2160  EXPECT_NOT_POISONED(grp.gr_name);
2161  assert(grp.gr_name);
2162  EXPECT_NOT_POISONED(grp.gr_name[0]);
2163  EXPECT_NOT_POISONED(grp.gr_gid);
2164}
2165
2166template<class T>
2167static bool applySlt(T value, T shadow) {
2168  __msan_partial_poison(&value, &shadow, sizeof(T));
2169  volatile bool zzz = true;
2170  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2171  // a shift-and-trunc to get at the highest bit.
2172  volatile bool v = value < 0 || zzz;
2173  return v;
2174}
2175
2176TEST(MemorySanitizer, SignedCompareWithZero) {
2177  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2178  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2179  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2180  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2181  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2182  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2183}
2184
2185template <class T, class S>
2186static T poisoned(T Va, S Sa) {
2187  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2188  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2189  T a;
2190  a = Va;
2191  __msan_partial_poison(&a, &Sa, sizeof(T));
2192  return a;
2193}
2194
2195TEST(MemorySanitizer, ICmpRelational) {
2196  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2197  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2198  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2199  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2200  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2201  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2202                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2203  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2204                  poisoned(-1, 0xFFFFFFFFU));
2205
2206  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2207  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2208  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2209  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2210  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2211  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2212                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2213  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2214                  poisoned(-1, 0xFFFFFFFFU));
2215
2216  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2217  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2218  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2219  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2220  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2221  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2222                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2223  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2224                  poisoned(-1, 0xFFFFFFFFU));
2225
2226  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2227  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2228  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2229  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2230  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2231  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2232                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2233  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2234                  poisoned(-1, 0xFFFFFFFFU));
2235
2236  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2237  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2238
2239  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2240}
2241
2242#if MSAN_HAS_M128
2243TEST(MemorySanitizer, ICmpVectorRelational) {
2244  EXPECT_NOT_POISONED(
2245      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2246                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2247  EXPECT_NOT_POISONED(
2248      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2249                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2250  EXPECT_POISONED(
2251      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2252                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2253  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2254                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2255}
2256#endif
2257
2258// Volatile bitfield store is implemented as load-mask-store
2259// Test that we don't warn on the store of (uninitialized) padding.
2260struct VolatileBitfieldStruct {
2261  volatile unsigned x : 1;
2262  unsigned y : 1;
2263};
2264
2265TEST(MemorySanitizer, VolatileBitfield) {
2266  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2267  S->x = 1;
2268  EXPECT_NOT_POISONED((unsigned)S->x);
2269  EXPECT_POISONED((unsigned)S->y);
2270}
2271
2272TEST(MemorySanitizer, UnalignedLoad) {
2273  char x[32];
2274  memset(x + 8, 0, 16);
2275  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2276  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2277  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2278  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2279  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2280  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2281  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2282
2283  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2284  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2285  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2286  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2287  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2288  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2289  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2290
2291  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2292  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2293  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2294  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2295  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2296  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2297  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2298  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2299  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2300}
2301
2302TEST(MemorySanitizer, UnalignedStore16) {
2303  char x[5];
2304  U2 y = 0;
2305  __msan_poison(&y, 1);
2306  __sanitizer_unaligned_store16(x + 1, y);
2307  EXPECT_POISONED(x[0]);
2308  EXPECT_POISONED(x[1]);
2309  EXPECT_NOT_POISONED(x[2]);
2310  EXPECT_POISONED(x[3]);
2311  EXPECT_POISONED(x[4]);
2312}
2313
2314TEST(MemorySanitizer, UnalignedStore32) {
2315  char x[8];
2316  U4 y4 = 0;
2317  __msan_poison(&y4, 2);
2318  __sanitizer_unaligned_store32(x+3, y4);
2319  EXPECT_POISONED(x[0]);
2320  EXPECT_POISONED(x[1]);
2321  EXPECT_POISONED(x[2]);
2322  EXPECT_POISONED(x[3]);
2323  EXPECT_POISONED(x[4]);
2324  EXPECT_NOT_POISONED(x[5]);
2325  EXPECT_NOT_POISONED(x[6]);
2326  EXPECT_POISONED(x[7]);
2327}
2328
2329TEST(MemorySanitizer, UnalignedStore64) {
2330  char x[16];
2331  U8 y = 0;
2332  __msan_poison(&y, 3);
2333  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2334  __sanitizer_unaligned_store64(x+3, y);
2335  EXPECT_POISONED(x[0]);
2336  EXPECT_POISONED(x[1]);
2337  EXPECT_POISONED(x[2]);
2338  EXPECT_POISONED(x[3]);
2339  EXPECT_POISONED(x[4]);
2340  EXPECT_POISONED(x[5]);
2341  EXPECT_NOT_POISONED(x[6]);
2342  EXPECT_NOT_POISONED(x[7]);
2343  EXPECT_NOT_POISONED(x[8]);
2344  EXPECT_POISONED(x[9]);
2345  EXPECT_NOT_POISONED(x[10]);
2346  EXPECT_POISONED(x[11]);
2347}
2348
2349TEST(MemorySanitizerDr, StoreInDSOTest) {
2350  if (!__msan_has_dynamic_component()) return;
2351  char* s = new char[10];
2352  dso_memfill(s, 9);
2353  EXPECT_NOT_POISONED(s[5]);
2354  EXPECT_POISONED(s[9]);
2355}
2356
2357int return_poisoned_int() {
2358  return ReturnPoisoned<U8>();
2359}
2360
2361TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2362  if (!__msan_has_dynamic_component()) return;
2363  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2364}
2365
2366NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2367  EXPECT_POISONED(x);
2368  EXPECT_POISONED(y);
2369  EXPECT_POISONED(z);
2370  return 0;
2371}
2372
2373static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2374  EXPECT_NOT_POISONED(x);
2375  EXPECT_NOT_POISONED(y);
2376  EXPECT_NOT_POISONED(z);
2377  return 0;
2378}
2379
2380TEST(MemorySanitizerDr, CallFromDSOTest) {
2381  if (!__msan_has_dynamic_component()) return;
2382  S8* x = GetPoisoned<S8>();
2383  S8* y = GetPoisoned<S8>();
2384  S8* z = GetPoisoned<S8>();
2385  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2386  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2387}
2388
2389static void StackStoreInDSOFn(int* x, int* y) {
2390  EXPECT_NOT_POISONED(*x);
2391  EXPECT_NOT_POISONED(*y);
2392}
2393
2394TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2395  if (!__msan_has_dynamic_component()) return;
2396  dso_stack_store(StackStoreInDSOFn, 1);
2397}
2398
2399TEST(MemorySanitizerOrigins, SetGet) {
2400  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2401  if (!TrackingOrigins()) return;
2402  int x;
2403  __msan_set_origin(&x, sizeof(x), 1234);
2404  EXPECT_EQ(1234, __msan_get_origin(&x));
2405  __msan_set_origin(&x, sizeof(x), 5678);
2406  EXPECT_EQ(5678, __msan_get_origin(&x));
2407  __msan_set_origin(&x, sizeof(x), 0);
2408  EXPECT_EQ(0, __msan_get_origin(&x));
2409}
2410
2411namespace {
2412struct S {
2413  U4 dummy;
2414  U2 a;
2415  U2 b;
2416};
2417
2418// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2419TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2420  if (!TrackingOrigins()) return;
2421
2422  S s;
2423  U4 origin = rand();  // NOLINT
2424  s.a = *GetPoisonedO<U2>(0, origin);
2425  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2426  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2427
2428  s.b = 42;
2429  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2430  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2431}
2432}  // namespace
2433
2434template<class T, class BinaryOp>
2435INLINE
2436void BinaryOpOriginTest(BinaryOp op) {
2437  U4 ox = rand();  //NOLINT
2438  U4 oy = rand();  //NOLINT
2439  T *x = GetPoisonedO<T>(0, ox, 0);
2440  T *y = GetPoisonedO<T>(1, oy, 0);
2441  T *z = GetPoisonedO<T>(2, 0, 0);
2442
2443  *z = op(*x, *y);
2444  U4 origin = __msan_get_origin(z);
2445  EXPECT_POISONED_O(*z, origin);
2446  EXPECT_EQ(true, origin == ox || origin == oy);
2447
2448  // y is poisoned, x is not.
2449  *x = 10101;
2450  *y = *GetPoisonedO<T>(1, oy);
2451  break_optimization(x);
2452  __msan_set_origin(z, sizeof(*z), 0);
2453  *z = op(*x, *y);
2454  EXPECT_POISONED_O(*z, oy);
2455  EXPECT_EQ(__msan_get_origin(z), oy);
2456
2457  // x is poisoned, y is not.
2458  *x = *GetPoisonedO<T>(0, ox);
2459  *y = 10101010;
2460  break_optimization(y);
2461  __msan_set_origin(z, sizeof(*z), 0);
2462  *z = op(*x, *y);
2463  EXPECT_POISONED_O(*z, ox);
2464  EXPECT_EQ(__msan_get_origin(z), ox);
2465}
2466
2467template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2468template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2469template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2470template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2471template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2472template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2473
2474TEST(MemorySanitizerOrigins, BinaryOp) {
2475  if (!TrackingOrigins()) return;
2476  BinaryOpOriginTest<S8>(XOR<S8>);
2477  BinaryOpOriginTest<U8>(ADD<U8>);
2478  BinaryOpOriginTest<S4>(SUB<S4>);
2479  BinaryOpOriginTest<S4>(MUL<S4>);
2480  BinaryOpOriginTest<U4>(OR<U4>);
2481  BinaryOpOriginTest<U4>(AND<U4>);
2482  BinaryOpOriginTest<double>(ADD<U4>);
2483  BinaryOpOriginTest<float>(ADD<S4>);
2484  BinaryOpOriginTest<double>(ADD<double>);
2485  BinaryOpOriginTest<float>(ADD<double>);
2486}
2487
2488TEST(MemorySanitizerOrigins, Unary) {
2489  if (!TrackingOrigins()) return;
2490  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2491  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2492  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2493  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2494
2495  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2496  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2497  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2498  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2499
2500  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2501  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2502  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2503  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2504
2505  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2506  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2507  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2508  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2509
2510  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2511  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2512}
2513
2514TEST(MemorySanitizerOrigins, EQ) {
2515  if (!TrackingOrigins()) return;
2516  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2517  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2518  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2519}
2520
2521TEST(MemorySanitizerOrigins, DIV) {
2522  if (!TrackingOrigins()) return;
2523  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2524  unsigned o = __LINE__;
2525  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2526}
2527
2528TEST(MemorySanitizerOrigins, SHIFT) {
2529  if (!TrackingOrigins()) return;
2530  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2531  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2532  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2533  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2534  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2535  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2536}
2537
2538template<class T, int N>
2539void MemCpyTest() {
2540  int ox = __LINE__;
2541  T *x = new T[N];
2542  T *y = new T[N];
2543  T *z = new T[N];
2544  T *q = new T[N];
2545  __msan_poison(x, N * sizeof(T));
2546  __msan_set_origin(x, N * sizeof(T), ox);
2547  __msan_set_origin(y, N * sizeof(T), 777777);
2548  __msan_set_origin(z, N * sizeof(T), 888888);
2549  EXPECT_NOT_POISONED(x);
2550  memcpy(y, x, N * sizeof(T));
2551  EXPECT_POISONED_O(y[0], ox);
2552  EXPECT_POISONED_O(y[N/2], ox);
2553  EXPECT_POISONED_O(y[N-1], ox);
2554  EXPECT_NOT_POISONED(x);
2555  void *res = mempcpy(q, x, N * sizeof(T));
2556  ASSERT_EQ(q + N, res);
2557  EXPECT_POISONED_O(q[0], ox);
2558  EXPECT_POISONED_O(q[N/2], ox);
2559  EXPECT_POISONED_O(q[N-1], ox);
2560  EXPECT_NOT_POISONED(x);
2561  memmove(z, x, N * sizeof(T));
2562  EXPECT_POISONED_O(z[0], ox);
2563  EXPECT_POISONED_O(z[N/2], ox);
2564  EXPECT_POISONED_O(z[N-1], ox);
2565}
2566
2567TEST(MemorySanitizerOrigins, LargeMemCpy) {
2568  if (!TrackingOrigins()) return;
2569  MemCpyTest<U1, 10000>();
2570  MemCpyTest<U8, 10000>();
2571}
2572
2573TEST(MemorySanitizerOrigins, SmallMemCpy) {
2574  if (!TrackingOrigins()) return;
2575  MemCpyTest<U8, 1>();
2576  MemCpyTest<U8, 2>();
2577  MemCpyTest<U8, 3>();
2578}
2579
2580TEST(MemorySanitizerOrigins, Select) {
2581  if (!TrackingOrigins()) return;
2582  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2583  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2584  S4 x;
2585  break_optimization(&x);
2586  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2587
2588  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2589  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2590}
2591
2592extern "C"
2593NOINLINE char AllocaTO() {
2594  int ar[100];
2595  break_optimization(ar);
2596  return ar[10];
2597  // fprintf(stderr, "Descr: %s\n",
2598  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2599}
2600
2601TEST(MemorySanitizerOrigins, Alloca) {
2602  if (!TrackingOrigins()) return;
2603  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2604  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2605  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2606  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2607}
2608
2609// FIXME: replace with a lit-like test.
2610TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2611  if (!TrackingOrigins()) return;
2612  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2613}
2614
2615NOINLINE int RetvalOriginTest(U4 origin) {
2616  int *a = new int;
2617  break_optimization(a);
2618  __msan_set_origin(a, sizeof(*a), origin);
2619  int res = *a;
2620  delete a;
2621  return res;
2622}
2623
2624TEST(MemorySanitizerOrigins, Retval) {
2625  if (!TrackingOrigins()) return;
2626  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2627}
2628
2629NOINLINE void ParamOriginTest(int param, U4 origin) {
2630  EXPECT_POISONED_O(param, origin);
2631}
2632
2633TEST(MemorySanitizerOrigins, Param) {
2634  if (!TrackingOrigins()) return;
2635  int *a = new int;
2636  U4 origin = __LINE__;
2637  break_optimization(a);
2638  __msan_set_origin(a, sizeof(*a), origin);
2639  ParamOriginTest(*a, origin);
2640  delete a;
2641}
2642
2643TEST(MemorySanitizerOrigins, Invoke) {
2644  if (!TrackingOrigins()) return;
2645  StructWithDtor s;  // Will cause the calls to become invokes.
2646  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2647}
2648
2649TEST(MemorySanitizerOrigins, strlen) {
2650  S8 alignment;
2651  break_optimization(&alignment);
2652  char x[4] = {'a', 'b', 0, 0};
2653  __msan_poison(&x[2], 1);
2654  U4 origin = __LINE__;
2655  __msan_set_origin(x, sizeof(x), origin);
2656  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2657}
2658
2659TEST(MemorySanitizerOrigins, wcslen) {
2660  wchar_t w[3] = {'a', 'b', 0};
2661  U4 origin = __LINE__;
2662  __msan_set_origin(w, sizeof(w), origin);
2663  __msan_poison(&w[2], sizeof(wchar_t));
2664  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2665}
2666
2667#if MSAN_HAS_M128
2668TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2669  __m128 x, y;
2670  U4 origin = __LINE__;
2671  __msan_set_origin(&x, sizeof(x), origin);
2672  __msan_poison(&x, sizeof(x));
2673  __builtin_ia32_storeups((float*)&y, x);
2674  EXPECT_POISONED_O(y, origin);
2675}
2676#endif
2677
2678NOINLINE void RecursiveMalloc(int depth) {
2679  static int count;
2680  count++;
2681  if ((count % (1024 * 1024)) == 0)
2682    printf("RecursiveMalloc: %d\n", count);
2683  int *x1 = new int;
2684  int *x2 = new int;
2685  break_optimization(x1);
2686  break_optimization(x2);
2687  if (depth > 0) {
2688    RecursiveMalloc(depth-1);
2689    RecursiveMalloc(depth-1);
2690  }
2691  delete x1;
2692  delete x2;
2693}
2694
2695TEST(MemorySanitizer, CallocOverflow) {
2696  size_t kArraySize = 4096;
2697  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2698  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2699  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2700  EXPECT_EQ(0L, Ident(p));
2701}
2702
2703TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2704  RecursiveMalloc(22);
2705}
2706