msan_test.cc revision 9b21ba6f661a6b14e3e81bb4f06ffb769be028c4 
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, realpath_null) {
943  const char* relpath = ".";
944  char* res = realpath(relpath, NULL);
945  printf("%d, %s\n", errno, strerror(errno));
946  assert(res);
947  EXPECT_NOT_POISONED(res[0]);
948  free(res);
949}
950
951TEST(MemorySanitizer, canonicalize_file_name) {
952  const char* relpath = ".";
953  char* res = canonicalize_file_name(relpath);
954  assert(res);
955  EXPECT_NOT_POISONED(res[0]);
956  free(res);
957}
958
959TEST(MemorySanitizer, memcpy) {
960  char* x = new char[2];
961  char* y = new char[2];
962  x[0] = 1;
963  x[1] = *GetPoisoned<char>();
964  memcpy(y, x, 2);
965  EXPECT_NOT_POISONED(y[0]);
966  EXPECT_POISONED(y[1]);
967}
968
969TEST(MemorySanitizer, memmove) {
970  char* x = new char[2];
971  char* y = new char[2];
972  x[0] = 1;
973  x[1] = *GetPoisoned<char>();
974  memmove(y, x, 2);
975  EXPECT_NOT_POISONED(y[0]);
976  EXPECT_POISONED(y[1]);
977}
978
979TEST(MemorySanitizer, bcopy) {
980  char* x = new char[2];
981  char* y = new char[2];
982  x[0] = 1;
983  x[1] = *GetPoisoned<char>();
984  bcopy(x, y, 2);
985  EXPECT_NOT_POISONED(y[0]);
986  EXPECT_POISONED(y[1]);
987}
988
989TEST(MemorySanitizer, strdup) {
990  char buf[4] = "abc";
991  __msan_poison(buf + 2, sizeof(*buf));
992  char *x = strdup(buf);
993  EXPECT_NOT_POISONED(x[0]);
994  EXPECT_NOT_POISONED(x[1]);
995  EXPECT_POISONED(x[2]);
996  EXPECT_NOT_POISONED(x[3]);
997  free(x);
998}
999
1000TEST(MemorySanitizer, strndup) {
1001  char buf[4] = "abc";
1002  __msan_poison(buf + 2, sizeof(*buf));
1003  char *x = strndup(buf, 3);
1004  EXPECT_NOT_POISONED(x[0]);
1005  EXPECT_NOT_POISONED(x[1]);
1006  EXPECT_POISONED(x[2]);
1007  EXPECT_NOT_POISONED(x[3]);
1008  free(x);
1009}
1010
1011TEST(MemorySanitizer, strndup_short) {
1012  char buf[4] = "abc";
1013  __msan_poison(buf + 1, sizeof(*buf));
1014  __msan_poison(buf + 2, sizeof(*buf));
1015  char *x = strndup(buf, 2);
1016  EXPECT_NOT_POISONED(x[0]);
1017  EXPECT_POISONED(x[1]);
1018  EXPECT_NOT_POISONED(x[2]);
1019  free(x);
1020}
1021
1022
1023template<class T, int size>
1024void TestOverlapMemmove() {
1025  T *x = new T[size];
1026  assert(size >= 3);
1027  x[2] = 0;
1028  memmove(x, x + 1, (size - 1) * sizeof(T));
1029  EXPECT_NOT_POISONED(x[1]);
1030  if (!__msan_has_dynamic_component()) {
1031    // FIXME: under DR we will lose this information
1032    // because accesses in memmove will unpoisin the shadow.
1033    // We need to use our own memove implementation instead of libc's.
1034    EXPECT_POISONED(x[0]);
1035    EXPECT_POISONED(x[2]);
1036  }
1037  delete [] x;
1038}
1039
1040TEST(MemorySanitizer, overlap_memmove) {
1041  TestOverlapMemmove<U1, 10>();
1042  TestOverlapMemmove<U1, 1000>();
1043  TestOverlapMemmove<U8, 4>();
1044  TestOverlapMemmove<U8, 1000>();
1045}
1046
1047TEST(MemorySanitizer, strcpy) {  // NOLINT
1048  char* x = new char[3];
1049  char* y = new char[3];
1050  x[0] = 'a';
1051  x[1] = *GetPoisoned<char>(1, 1);
1052  x[2] = 0;
1053  strcpy(y, x);  // NOLINT
1054  EXPECT_NOT_POISONED(y[0]);
1055  EXPECT_POISONED(y[1]);
1056  EXPECT_NOT_POISONED(y[2]);
1057}
1058
1059TEST(MemorySanitizer, strncpy) {  // NOLINT
1060  char* x = new char[3];
1061  char* y = new char[3];
1062  x[0] = 'a';
1063  x[1] = *GetPoisoned<char>(1, 1);
1064  x[2] = 0;
1065  strncpy(y, x, 2);  // NOLINT
1066  EXPECT_NOT_POISONED(y[0]);
1067  EXPECT_POISONED(y[1]);
1068  EXPECT_POISONED(y[2]);
1069}
1070
1071TEST(MemorySanitizer, stpcpy) {  // NOLINT
1072  char* x = new char[3];
1073  char* y = new char[3];
1074  x[0] = 'a';
1075  x[1] = *GetPoisoned<char>(1, 1);
1076  x[2] = 0;
1077  char *res = stpcpy(y, x);  // NOLINT
1078  ASSERT_EQ(res, y + 2);
1079  EXPECT_NOT_POISONED(y[0]);
1080  EXPECT_POISONED(y[1]);
1081  EXPECT_NOT_POISONED(y[2]);
1082}
1083
1084TEST(MemorySanitizer, strtol) {
1085  char *e;
1086  assert(1 == strtol("1", &e, 10));
1087  EXPECT_NOT_POISONED((S8) e);
1088}
1089
1090TEST(MemorySanitizer, strtoll) {
1091  char *e;
1092  assert(1 == strtoll("1", &e, 10));
1093  EXPECT_NOT_POISONED((S8) e);
1094}
1095
1096TEST(MemorySanitizer, strtoul) {
1097  char *e;
1098  assert(1 == strtoul("1", &e, 10));
1099  EXPECT_NOT_POISONED((S8) e);
1100}
1101
1102TEST(MemorySanitizer, strtoull) {
1103  char *e;
1104  assert(1 == strtoull("1", &e, 10));
1105  EXPECT_NOT_POISONED((S8) e);
1106}
1107
1108TEST(MemorySanitizer, strtoimax) {
1109  char *e;
1110  assert(1 == strtoimax("1", &e, 10));
1111  EXPECT_NOT_POISONED((S8) e);
1112}
1113
1114TEST(MemorySanitizer, strtoumax) {
1115  char *e;
1116  assert(1 == strtoumax("1", &e, 10));
1117  EXPECT_NOT_POISONED((S8) e);
1118}
1119
1120TEST(MemorySanitizer, strtod) {
1121  char *e;
1122  assert(0 != strtod("1.5", &e));
1123  EXPECT_NOT_POISONED((S8) e);
1124}
1125
1126TEST(MemorySanitizer, strtof) {
1127  char *e;
1128  assert(0 != strtof("1.5", &e));
1129  EXPECT_NOT_POISONED((S8) e);
1130}
1131
1132TEST(MemorySanitizer, strtold) {
1133  char *e;
1134  assert(0 != strtold("1.5", &e));
1135  EXPECT_NOT_POISONED((S8) e);
1136}
1137
1138TEST(MemorySanitizer, modf) {
1139  double x, y;
1140  x = modf(2.1, &y);
1141  EXPECT_NOT_POISONED(y);
1142}
1143
1144TEST(MemorySanitizer, modff) {
1145  float x, y;
1146  x = modff(2.1, &y);
1147  EXPECT_NOT_POISONED(y);
1148}
1149
1150TEST(MemorySanitizer, modfl) {
1151  long double x, y;
1152  x = modfl(2.1, &y);
1153  EXPECT_NOT_POISONED(y);
1154}
1155
1156TEST(MemorySanitizer, sprintf) {  // NOLINT
1157  char buff[10];
1158  break_optimization(buff);
1159  EXPECT_POISONED(buff[0]);
1160  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1161  assert(res == 7);
1162  assert(buff[0] == '1');
1163  assert(buff[1] == '2');
1164  assert(buff[2] == '3');
1165  assert(buff[6] == '7');
1166  assert(buff[7] == 0);
1167  EXPECT_POISONED(buff[8]);
1168}
1169
1170TEST(MemorySanitizer, snprintf) {
1171  char buff[10];
1172  break_optimization(buff);
1173  EXPECT_POISONED(buff[0]);
1174  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
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, swprintf) {
1185  wchar_t buff[10];
1186  assert(sizeof(wchar_t) == 4);
1187  break_optimization(buff);
1188  EXPECT_POISONED(buff[0]);
1189  int res = swprintf(buff, 9, L"%d", 1234567);
1190  assert(res == 7);
1191  assert(buff[0] == '1');
1192  assert(buff[1] == '2');
1193  assert(buff[2] == '3');
1194  assert(buff[6] == '7');
1195  assert(buff[7] == 0);
1196  EXPECT_POISONED(buff[8]);
1197}
1198
1199TEST(MemorySanitizer, asprintf) {  // NOLINT
1200  char *pbuf;
1201  EXPECT_POISONED(pbuf);
1202  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1203  assert(res == 7);
1204  EXPECT_NOT_POISONED(pbuf);
1205  assert(pbuf[0] == '1');
1206  assert(pbuf[1] == '2');
1207  assert(pbuf[2] == '3');
1208  assert(pbuf[6] == '7');
1209  assert(pbuf[7] == 0);
1210  free(pbuf);
1211}
1212
1213TEST(MemorySanitizer, wcstombs) {
1214  const wchar_t *x = L"abc";
1215  char buff[10];
1216  int res = wcstombs(buff, x, 4);
1217  EXPECT_EQ(res, 3);
1218  EXPECT_EQ(buff[0], 'a');
1219  EXPECT_EQ(buff[1], 'b');
1220  EXPECT_EQ(buff[2], 'c');
1221}
1222
1223TEST(MemorySanitizer, wcsrtombs) {
1224  const wchar_t *x = L"abc";
1225  const wchar_t *p = x;
1226  char buff[10];
1227  mbstate_t mbs;
1228  int res = wcsrtombs(buff, &p, 4, &mbs);
1229  EXPECT_EQ(res, 3);
1230  EXPECT_EQ(buff[0], 'a');
1231  EXPECT_EQ(buff[1], 'b');
1232  EXPECT_EQ(buff[2], 'c');
1233  EXPECT_EQ(buff[3], '\0');
1234  EXPECT_POISONED(buff[4]);
1235}
1236
1237TEST(MemorySanitizer, wcsnrtombs) {
1238  const wchar_t *x = L"abc";
1239  const wchar_t *p = x;
1240  char buff[10];
1241  mbstate_t mbs;
1242  int res = wcsnrtombs(buff, &p, 2, 4, &mbs);
1243  EXPECT_EQ(res, 2);
1244  EXPECT_EQ(buff[0], 'a');
1245  EXPECT_EQ(buff[1], 'b');
1246  EXPECT_POISONED(buff[2]);
1247}
1248
1249TEST(MemorySanitizer, mbtowc) {
1250  const char *x = "abc";
1251  wchar_t wx;
1252  int res = mbtowc(&wx, x, 3);
1253  EXPECT_GT(res, 0);
1254  EXPECT_NOT_POISONED(wx);
1255}
1256
1257TEST(MemorySanitizer, mbrtowc) {
1258  const char *x = "abc";
1259  wchar_t wx;
1260  mbstate_t mbs;
1261  memset(&mbs, 0, sizeof(mbs));
1262  int res = mbrtowc(&wx, x, 3, &mbs);
1263  EXPECT_GT(res, 0);
1264  EXPECT_NOT_POISONED(wx);
1265}
1266
1267TEST(MemorySanitizer, gettimeofday) {
1268  struct timeval tv;
1269  struct timezone tz;
1270  break_optimization(&tv);
1271  break_optimization(&tz);
1272  assert(sizeof(tv) == 16);
1273  assert(sizeof(tz) == 8);
1274  EXPECT_POISONED(tv.tv_sec);
1275  EXPECT_POISONED(tv.tv_usec);
1276  EXPECT_POISONED(tz.tz_minuteswest);
1277  EXPECT_POISONED(tz.tz_dsttime);
1278  assert(0 == gettimeofday(&tv, &tz));
1279  EXPECT_NOT_POISONED(tv.tv_sec);
1280  EXPECT_NOT_POISONED(tv.tv_usec);
1281  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1282  EXPECT_NOT_POISONED(tz.tz_dsttime);
1283}
1284
1285TEST(MemorySanitizer, clock_gettime) {
1286  struct timespec tp;
1287  EXPECT_POISONED(tp.tv_sec);
1288  EXPECT_POISONED(tp.tv_nsec);
1289  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1290  EXPECT_NOT_POISONED(tp.tv_sec);
1291  EXPECT_NOT_POISONED(tp.tv_nsec);
1292}
1293
1294TEST(MemorySanitizer, clock_getres) {
1295  struct timespec tp;
1296  EXPECT_POISONED(tp.tv_sec);
1297  EXPECT_POISONED(tp.tv_nsec);
1298  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1299  EXPECT_POISONED(tp.tv_sec);
1300  EXPECT_POISONED(tp.tv_nsec);
1301  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1302  EXPECT_NOT_POISONED(tp.tv_sec);
1303  EXPECT_NOT_POISONED(tp.tv_nsec);
1304}
1305
1306TEST(MemorySanitizer, getitimer) {
1307  struct itimerval it1, it2;
1308  int res;
1309  EXPECT_POISONED(it1.it_interval.tv_sec);
1310  EXPECT_POISONED(it1.it_interval.tv_usec);
1311  EXPECT_POISONED(it1.it_value.tv_sec);
1312  EXPECT_POISONED(it1.it_value.tv_usec);
1313  res = getitimer(ITIMER_VIRTUAL, &it1);
1314  assert(!res);
1315  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1316  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1317  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1318  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1319
1320  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1321  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1322
1323  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1324  assert(!res);
1325  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1326  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1327  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1328  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1329
1330  // Check that old_value can be 0, and disable the timer.
1331  memset(&it1, 0, sizeof(it1));
1332  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1333  assert(!res);
1334}
1335
1336TEST(MemorySanitizer, time) {
1337  time_t t;
1338  EXPECT_POISONED(t);
1339  time_t t2 = time(&t);
1340  assert(t2 != (time_t)-1);
1341  EXPECT_NOT_POISONED(t);
1342}
1343
1344TEST(MemorySanitizer, localtime) {
1345  time_t t = 123;
1346  struct tm *time = localtime(&t);
1347  assert(time != 0);
1348  EXPECT_NOT_POISONED(time->tm_sec);
1349  EXPECT_NOT_POISONED(time->tm_hour);
1350  EXPECT_NOT_POISONED(time->tm_year);
1351  EXPECT_NOT_POISONED(time->tm_isdst);
1352}
1353
1354TEST(MemorySanitizer, localtime_r) {
1355  time_t t = 123;
1356  struct tm time;
1357  struct tm *res = localtime_r(&t, &time);
1358  assert(res != 0);
1359  EXPECT_NOT_POISONED(time.tm_sec);
1360  EXPECT_NOT_POISONED(time.tm_hour);
1361  EXPECT_NOT_POISONED(time.tm_year);
1362  EXPECT_NOT_POISONED(time.tm_isdst);
1363}
1364
1365TEST(MemorySanitizer, mmap) {
1366  const int size = 4096;
1367  void *p1, *p2;
1368  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1369  __msan_poison(p1, size);
1370  munmap(p1, size);
1371  for (int i = 0; i < 1000; i++) {
1372    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1373    if (p2 == p1)
1374      break;
1375    else
1376      munmap(p2, size);
1377  }
1378  if (p1 == p2) {
1379    EXPECT_NOT_POISONED(*(char*)p2);
1380    munmap(p2, size);
1381  }
1382}
1383
1384// FIXME: enable and add ecvt.
1385// FIXME: check why msandr does nt handle fcvt.
1386TEST(MemorySanitizer, fcvt) {
1387  int a, b;
1388  break_optimization(&a);
1389  break_optimization(&b);
1390  EXPECT_POISONED(a);
1391  EXPECT_POISONED(b);
1392  char *str = fcvt(12345.6789, 10, &a, &b);
1393  EXPECT_NOT_POISONED(a);
1394  EXPECT_NOT_POISONED(b);
1395}
1396
1397TEST(MemorySanitizer, frexp) {
1398  int x;
1399  x = *GetPoisoned<int>();
1400  double r = frexp(1.1, &x);
1401  EXPECT_NOT_POISONED(r);
1402  EXPECT_NOT_POISONED(x);
1403
1404  x = *GetPoisoned<int>();
1405  float rf = frexpf(1.1, &x);
1406  EXPECT_NOT_POISONED(rf);
1407  EXPECT_NOT_POISONED(x);
1408
1409  x = *GetPoisoned<int>();
1410  double rl = frexpl(1.1, &x);
1411  EXPECT_NOT_POISONED(rl);
1412  EXPECT_NOT_POISONED(x);
1413}
1414
1415namespace {
1416
1417static int cnt;
1418
1419void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1420  assert(signo == SIGPROF);
1421  assert(si);
1422  EXPECT_NOT_POISONED(si->si_errno);
1423  EXPECT_NOT_POISONED(si->si_pid);
1424#if __linux__
1425# if defined(__x86_64__)
1426  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1427# elif defined(__i386__)
1428  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1429# endif
1430#endif
1431  ++cnt;
1432}
1433
1434TEST(MemorySanitizer, sigaction) {
1435  struct sigaction act = {};
1436  struct sigaction oldact = {};
1437  struct sigaction origact = {};
1438
1439  sigaction(SIGPROF, 0, &origact);
1440
1441  act.sa_flags |= SA_SIGINFO;
1442  act.sa_sigaction = &SigactionHandler;
1443  sigaction(SIGPROF, &act, 0);
1444
1445  kill(getpid(), SIGPROF);
1446
1447  act.sa_flags &= ~SA_SIGINFO;
1448  act.sa_handler = SIG_DFL;
1449  sigaction(SIGPROF, &act, 0);
1450
1451  act.sa_flags &= ~SA_SIGINFO;
1452  act.sa_handler = SIG_IGN;
1453  sigaction(SIGPROF, &act, &oldact);
1454  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1455  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1456  kill(getpid(), SIGPROF);
1457
1458  act.sa_flags |= SA_SIGINFO;
1459  act.sa_sigaction = &SigactionHandler;
1460  sigaction(SIGPROF, &act, &oldact);
1461  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1462  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1463  kill(getpid(), SIGPROF);
1464
1465  act.sa_flags &= ~SA_SIGINFO;
1466  act.sa_handler = SIG_DFL;
1467  sigaction(SIGPROF, &act, &oldact);
1468  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1469  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1470  EXPECT_EQ(2, cnt);
1471
1472  sigaction(SIGPROF, &origact, 0);
1473}
1474
1475} // namespace
1476
1477struct StructWithDtor {
1478  ~StructWithDtor();
1479};
1480
1481NOINLINE StructWithDtor::~StructWithDtor() {
1482  break_optimization(0);
1483}
1484
1485TEST(MemorySanitizer, Invoke) {
1486  StructWithDtor s;  // Will cause the calls to become invokes.
1487  EXPECT_NOT_POISONED(0);
1488  EXPECT_POISONED(*GetPoisoned<int>());
1489  EXPECT_NOT_POISONED(0);
1490  EXPECT_POISONED(*GetPoisoned<int>());
1491  EXPECT_POISONED(ReturnPoisoned<S4>());
1492}
1493
1494TEST(MemorySanitizer, ptrtoint) {
1495  // Test that shadow is propagated through pointer-to-integer conversion.
1496  void* p = (void*)0xABCD;
1497  __msan_poison(((char*)&p) + 1, sizeof(p));
1498  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1499
1500  void* q = (void*)0xABCD;
1501  __msan_poison(&q, sizeof(q) - 1);
1502  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1503}
1504
1505static void vaargsfn2(int guard, ...) {
1506  va_list vl;
1507  va_start(vl, guard);
1508  EXPECT_NOT_POISONED(va_arg(vl, int));
1509  EXPECT_NOT_POISONED(va_arg(vl, int));
1510  EXPECT_NOT_POISONED(va_arg(vl, int));
1511  EXPECT_POISONED(va_arg(vl, double));
1512  va_end(vl);
1513}
1514
1515static void vaargsfn(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  // The following call will overwrite __msan_param_tls.
1521  // Checks after it test that arg shadow was somehow saved across the call.
1522  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1523  EXPECT_NOT_POISONED(va_arg(vl, int));
1524  EXPECT_POISONED(va_arg(vl, int));
1525  va_end(vl);
1526}
1527
1528TEST(MemorySanitizer, VAArgTest) {
1529  int* x = GetPoisoned<int>();
1530  int* y = GetPoisoned<int>(4);
1531  vaargsfn(1, 13, *x, 42, *y);
1532}
1533
1534static void vaargsfn_many(int guard, ...) {
1535  va_list vl;
1536  va_start(vl, guard);
1537  EXPECT_NOT_POISONED(va_arg(vl, int));
1538  EXPECT_POISONED(va_arg(vl, int));
1539  EXPECT_NOT_POISONED(va_arg(vl, int));
1540  EXPECT_NOT_POISONED(va_arg(vl, int));
1541  EXPECT_NOT_POISONED(va_arg(vl, int));
1542  EXPECT_NOT_POISONED(va_arg(vl, int));
1543  EXPECT_NOT_POISONED(va_arg(vl, int));
1544  EXPECT_NOT_POISONED(va_arg(vl, int));
1545  EXPECT_NOT_POISONED(va_arg(vl, int));
1546  EXPECT_POISONED(va_arg(vl, int));
1547  va_end(vl);
1548}
1549
1550TEST(MemorySanitizer, VAArgManyTest) {
1551  int* x = GetPoisoned<int>();
1552  int* y = GetPoisoned<int>(4);
1553  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1554}
1555
1556static void vaargsfn_pass2(va_list vl) {
1557  EXPECT_NOT_POISONED(va_arg(vl, int));
1558  EXPECT_NOT_POISONED(va_arg(vl, int));
1559  EXPECT_POISONED(va_arg(vl, int));
1560}
1561
1562static void vaargsfn_pass(int guard, ...) {
1563  va_list vl;
1564  va_start(vl, guard);
1565  EXPECT_POISONED(va_arg(vl, int));
1566  vaargsfn_pass2(vl);
1567  va_end(vl);
1568}
1569
1570TEST(MemorySanitizer, VAArgPass) {
1571  int* x = GetPoisoned<int>();
1572  int* y = GetPoisoned<int>(4);
1573  vaargsfn_pass(1, *x, 2, 3, *y);
1574}
1575
1576static void vaargsfn_copy2(va_list vl) {
1577  EXPECT_NOT_POISONED(va_arg(vl, int));
1578  EXPECT_POISONED(va_arg(vl, int));
1579}
1580
1581static void vaargsfn_copy(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  va_list vl2;
1587  va_copy(vl2, vl);
1588  vaargsfn_copy2(vl2);
1589  EXPECT_NOT_POISONED(va_arg(vl, int));
1590  EXPECT_POISONED(va_arg(vl, int));
1591  va_end(vl);
1592}
1593
1594TEST(MemorySanitizer, VAArgCopy) {
1595  int* x = GetPoisoned<int>();
1596  int* y = GetPoisoned<int>(4);
1597  vaargsfn_copy(1, 2, *x, 3, *y);
1598}
1599
1600static void vaargsfn_ptr(int guard, ...) {
1601  va_list vl;
1602  va_start(vl, guard);
1603  EXPECT_NOT_POISONED(va_arg(vl, int*));
1604  EXPECT_POISONED(va_arg(vl, int*));
1605  EXPECT_NOT_POISONED(va_arg(vl, int*));
1606  EXPECT_POISONED(va_arg(vl, double*));
1607  va_end(vl);
1608}
1609
1610TEST(MemorySanitizer, VAArgPtr) {
1611  int** x = GetPoisoned<int*>();
1612  double** y = GetPoisoned<double*>(8);
1613  int z;
1614  vaargsfn_ptr(1, &z, *x, &z, *y);
1615}
1616
1617static void vaargsfn_overflow(int guard, ...) {
1618  va_list vl;
1619  va_start(vl, guard);
1620  EXPECT_NOT_POISONED(va_arg(vl, int));
1621  EXPECT_NOT_POISONED(va_arg(vl, int));
1622  EXPECT_POISONED(va_arg(vl, int));
1623  EXPECT_NOT_POISONED(va_arg(vl, int));
1624  EXPECT_NOT_POISONED(va_arg(vl, int));
1625  EXPECT_NOT_POISONED(va_arg(vl, int));
1626
1627  EXPECT_NOT_POISONED(va_arg(vl, double));
1628  EXPECT_NOT_POISONED(va_arg(vl, double));
1629  EXPECT_NOT_POISONED(va_arg(vl, double));
1630  EXPECT_POISONED(va_arg(vl, double));
1631  EXPECT_NOT_POISONED(va_arg(vl, double));
1632  EXPECT_POISONED(va_arg(vl, int*));
1633  EXPECT_NOT_POISONED(va_arg(vl, double));
1634  EXPECT_NOT_POISONED(va_arg(vl, double));
1635
1636  EXPECT_POISONED(va_arg(vl, int));
1637  EXPECT_POISONED(va_arg(vl, double));
1638  EXPECT_POISONED(va_arg(vl, int*));
1639
1640  EXPECT_NOT_POISONED(va_arg(vl, int));
1641  EXPECT_NOT_POISONED(va_arg(vl, double));
1642  EXPECT_NOT_POISONED(va_arg(vl, int*));
1643
1644  EXPECT_POISONED(va_arg(vl, int));
1645  EXPECT_POISONED(va_arg(vl, double));
1646  EXPECT_POISONED(va_arg(vl, int*));
1647
1648  va_end(vl);
1649}
1650
1651TEST(MemorySanitizer, VAArgOverflow) {
1652  int* x = GetPoisoned<int>();
1653  double* y = GetPoisoned<double>(8);
1654  int** p = GetPoisoned<int*>(16);
1655  int z;
1656  vaargsfn_overflow(1,
1657      1, 2, *x, 4, 5, 6,
1658      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1659      // the following args will overflow for sure
1660      *x, *y, *p,
1661      7, 9.9, &z,
1662      *x, *y, *p);
1663}
1664
1665static void vaargsfn_tlsoverwrite2(int guard, ...) {
1666  va_list vl;
1667  va_start(vl, guard);
1668  EXPECT_NOT_POISONED(va_arg(vl, int));
1669  va_end(vl);
1670}
1671
1672static void vaargsfn_tlsoverwrite(int guard, ...) {
1673  // This call will overwrite TLS contents unless it's backed up somewhere.
1674  vaargsfn_tlsoverwrite2(2, 42);
1675  va_list vl;
1676  va_start(vl, guard);
1677  EXPECT_POISONED(va_arg(vl, int));
1678  va_end(vl);
1679}
1680
1681TEST(MemorySanitizer, VAArgTLSOverwrite) {
1682  int* x = GetPoisoned<int>();
1683  vaargsfn_tlsoverwrite(1, *x);
1684}
1685
1686struct StructByVal {
1687  int a, b, c, d, e, f;
1688};
1689
1690NOINLINE void StructByValTestFunc(struct StructByVal s) {
1691  EXPECT_NOT_POISONED(s.a);
1692  EXPECT_POISONED(s.b);
1693  EXPECT_NOT_POISONED(s.c);
1694  EXPECT_POISONED(s.d);
1695  EXPECT_NOT_POISONED(s.e);
1696  EXPECT_POISONED(s.f);
1697}
1698
1699NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1700  StructByValTestFunc(s);
1701}
1702
1703NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1704  StructByValTestFunc(s);
1705}
1706
1707TEST(MemorySanitizer, StructByVal) {
1708  // Large aggregates are passed as "byval" pointer argument in LLVM.
1709  struct StructByVal s;
1710  s.a = 1;
1711  s.b = *GetPoisoned<int>();
1712  s.c = 2;
1713  s.d = *GetPoisoned<int>();
1714  s.e = 3;
1715  s.f = *GetPoisoned<int>();
1716  StructByValTestFunc(s);
1717  StructByValTestFunc1(s);
1718  StructByValTestFunc2(0, s);
1719}
1720
1721
1722#if MSAN_HAS_M128
1723NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1724NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1725TEST(MemorySanitizer, m128) {
1726  __m128i a = _mm_set1_epi16(0x1234);
1727  __m128i b = _mm_set1_epi16(0x7890);
1728  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1729  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1730}
1731// FIXME: add more tests for __m128i.
1732#endif  // MSAN_HAS_M128
1733
1734// We should not complain when copying this poisoned hole.
1735struct StructWithHole {
1736  U4  a;
1737  // 4-byte hole.
1738  U8  b;
1739};
1740
1741NOINLINE StructWithHole ReturnStructWithHole() {
1742  StructWithHole res;
1743  __msan_poison(&res, sizeof(res));
1744  res.a = 1;
1745  res.b = 2;
1746  return res;
1747}
1748
1749TEST(MemorySanitizer, StructWithHole) {
1750  StructWithHole a = ReturnStructWithHole();
1751  break_optimization(&a);
1752}
1753
1754template <class T>
1755NOINLINE T ReturnStruct() {
1756  T res;
1757  __msan_poison(&res, sizeof(res));
1758  res.a = 1;
1759  return res;
1760}
1761
1762template <class T>
1763NOINLINE void TestReturnStruct() {
1764  T s1 = ReturnStruct<T>();
1765  EXPECT_NOT_POISONED(s1.a);
1766  EXPECT_POISONED(s1.b);
1767}
1768
1769struct SSS1 {
1770  int a, b, c;
1771};
1772struct SSS2 {
1773  int b, a, c;
1774};
1775struct SSS3 {
1776  int b, c, a;
1777};
1778struct SSS4 {
1779  int c, b, a;
1780};
1781
1782struct SSS5 {
1783  int a;
1784  float b;
1785};
1786struct SSS6 {
1787  int a;
1788  double b;
1789};
1790struct SSS7 {
1791  S8 b;
1792  int a;
1793};
1794struct SSS8 {
1795  S2 b;
1796  S8 a;
1797};
1798
1799TEST(MemorySanitizer, IntStruct3) {
1800  TestReturnStruct<SSS1>();
1801  TestReturnStruct<SSS2>();
1802  TestReturnStruct<SSS3>();
1803  TestReturnStruct<SSS4>();
1804  TestReturnStruct<SSS5>();
1805  TestReturnStruct<SSS6>();
1806  TestReturnStruct<SSS7>();
1807  TestReturnStruct<SSS8>();
1808}
1809
1810struct LongStruct {
1811  U1 a1, b1;
1812  U2 a2, b2;
1813  U4 a4, b4;
1814  U8 a8, b8;
1815};
1816
1817NOINLINE LongStruct ReturnLongStruct1() {
1818  LongStruct res;
1819  __msan_poison(&res, sizeof(res));
1820  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1821  // leaves b1, .., b8 poisoned.
1822  return res;
1823}
1824
1825NOINLINE LongStruct ReturnLongStruct2() {
1826  LongStruct res;
1827  __msan_poison(&res, sizeof(res));
1828  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1829  // leaves a1, .., a8 poisoned.
1830  return res;
1831}
1832
1833TEST(MemorySanitizer, LongStruct) {
1834  LongStruct s1 = ReturnLongStruct1();
1835  __msan_print_shadow(&s1, sizeof(s1));
1836  EXPECT_NOT_POISONED(s1.a1);
1837  EXPECT_NOT_POISONED(s1.a2);
1838  EXPECT_NOT_POISONED(s1.a4);
1839  EXPECT_NOT_POISONED(s1.a8);
1840
1841  EXPECT_POISONED(s1.b1);
1842  EXPECT_POISONED(s1.b2);
1843  EXPECT_POISONED(s1.b4);
1844  EXPECT_POISONED(s1.b8);
1845
1846  LongStruct s2 = ReturnLongStruct2();
1847  __msan_print_shadow(&s2, sizeof(s2));
1848  EXPECT_NOT_POISONED(s2.b1);
1849  EXPECT_NOT_POISONED(s2.b2);
1850  EXPECT_NOT_POISONED(s2.b4);
1851  EXPECT_NOT_POISONED(s2.b8);
1852
1853  EXPECT_POISONED(s2.a1);
1854  EXPECT_POISONED(s2.a2);
1855  EXPECT_POISONED(s2.a4);
1856  EXPECT_POISONED(s2.a8);
1857}
1858
1859TEST(MemorySanitizer, getrlimit) {
1860  struct rlimit limit;
1861  __msan_poison(&limit, sizeof(limit));
1862  int result = getrlimit(RLIMIT_DATA, &limit);
1863  assert(result == 0);
1864  EXPECT_NOT_POISONED(limit.rlim_cur);
1865  EXPECT_NOT_POISONED(limit.rlim_max);
1866}
1867
1868TEST(MemorySanitizer, getrusage) {
1869  struct rusage usage;
1870  __msan_poison(&usage, sizeof(usage));
1871  int result = getrusage(RUSAGE_SELF, &usage);
1872  assert(result == 0);
1873  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
1874  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
1875  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
1876  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
1877  EXPECT_NOT_POISONED(usage.ru_maxrss);
1878  EXPECT_NOT_POISONED(usage.ru_minflt);
1879  EXPECT_NOT_POISONED(usage.ru_majflt);
1880  EXPECT_NOT_POISONED(usage.ru_inblock);
1881  EXPECT_NOT_POISONED(usage.ru_oublock);
1882  EXPECT_NOT_POISONED(usage.ru_nvcsw);
1883  EXPECT_NOT_POISONED(usage.ru_nivcsw);
1884}
1885
1886#ifdef __GLIBC__
1887extern char *program_invocation_name;
1888#else  // __GLIBC__
1889# error "TODO: port this"
1890#endif
1891
1892static void dladdr_testfn() {}
1893
1894TEST(MemorySanitizer, dladdr) {
1895  Dl_info info;
1896  __msan_poison(&info, sizeof(info));
1897  int result = dladdr((const void*)dladdr_testfn, &info);
1898  assert(result != 0);
1899  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
1900  if (info.dli_fname)
1901    EXPECT_NOT_POISONED(strlen(info.dli_fname));
1902  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
1903  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
1904  if (info.dli_sname)
1905    EXPECT_NOT_POISONED(strlen(info.dli_sname));
1906  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
1907}
1908
1909static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
1910  (*(int *)data)++;
1911  EXPECT_NOT_POISONED(info->dlpi_addr);
1912  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
1913  EXPECT_NOT_POISONED(info->dlpi_phnum);
1914  for (int i = 0; i < info->dlpi_phnum; ++i)
1915    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
1916  return 0;
1917}
1918
1919#ifndef MSAN_TEST_DISABLE_DLOPEN
1920
1921// Compute the path to our loadable DSO.  We assume it's in the same
1922// directory.  Only use string routines that we intercept so far to do this.
1923static int PathToLoadable(char *buf, size_t sz) {
1924  const char *basename = "libmsan_loadable.x86_64.so";
1925  char *argv0 = program_invocation_name;
1926  char *last_slash = strrchr(argv0, '/');
1927  assert(last_slash);
1928  int res =
1929      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
1930  return res < sz ? 0 : res;
1931}
1932
1933TEST(MemorySanitizer, dl_iterate_phdr) {
1934  char path[4096];
1935  int res = PathToLoadable(path, sizeof(path));
1936  assert(!res);
1937
1938  // Having at least one dlopen'ed library in the process makes this more
1939  // entertaining.
1940  void *lib = dlopen(path, RTLD_LAZY);
1941  ASSERT_NE((void*)0, lib);
1942
1943  int count = 0;
1944  int result = dl_iterate_phdr(dl_phdr_callback, &count);
1945  assert(count > 0);
1946
1947  dlclose(lib);
1948}
1949
1950
1951TEST(MemorySanitizer, dlopen) {
1952  char path[4096];
1953  int res = PathToLoadable(path, sizeof(path));
1954  assert(!res);
1955
1956  // We need to clear shadow for globals when doing dlopen.  In order to test
1957  // this, we have to poison the shadow for the DSO before we load it.  In
1958  // general this is difficult, but the loader tends to reload things in the
1959  // same place, so we open, close, and then reopen.  The global should always
1960  // start out clean after dlopen.
1961  for (int i = 0; i < 2; i++) {
1962    void *lib = dlopen(path, RTLD_LAZY);
1963    if (lib == NULL) {
1964      printf("dlerror: %s\n", dlerror());
1965      assert(lib != NULL);
1966    }
1967    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
1968    assert(get_dso_global);
1969    void **dso_global = get_dso_global();
1970    EXPECT_NOT_POISONED(*dso_global);
1971    __msan_poison(dso_global, sizeof(*dso_global));
1972    EXPECT_POISONED(*dso_global);
1973    dlclose(lib);
1974  }
1975}
1976
1977// Regression test for a crash in dlopen() interceptor.
1978TEST(MemorySanitizer, dlopenFailed) {
1979  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
1980  void *lib = dlopen(path, RTLD_LAZY);
1981  ASSERT_EQ(0, lib);
1982}
1983
1984#endif // MSAN_TEST_DISABLE_DLOPEN
1985
1986TEST(MemorySanitizer, scanf) {
1987  const char *input = "42 hello";
1988  int* d = new int;
1989  char* s = new char[7];
1990  int res = sscanf(input, "%d %5s", d, s);
1991  printf("res %d\n", res);
1992  assert(res == 2);
1993  EXPECT_NOT_POISONED(*d);
1994  EXPECT_NOT_POISONED(s[0]);
1995  EXPECT_NOT_POISONED(s[1]);
1996  EXPECT_NOT_POISONED(s[2]);
1997  EXPECT_NOT_POISONED(s[3]);
1998  EXPECT_NOT_POISONED(s[4]);
1999  EXPECT_NOT_POISONED(s[5]);
2000  EXPECT_POISONED(s[6]);
2001  delete s;
2002  delete d;
2003}
2004
2005static void *SimpleThread_threadfn(void* data) {
2006  return new int;
2007}
2008
2009TEST(MemorySanitizer, SimpleThread) {
2010  pthread_t t;
2011  void *p;
2012  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
2013  assert(!res);
2014  EXPECT_NOT_POISONED(t);
2015  res = pthread_join(t, &p);
2016  assert(!res);
2017  if (!__msan_has_dynamic_component())  // FIXME: intercept pthread_join (?).
2018    __msan_unpoison(&p, sizeof(p));
2019  delete (int*)p;
2020}
2021
2022static void *SmallStackThread_threadfn(void* data) {
2023  return 0;
2024}
2025
2026TEST(MemorySanitizer, SmallStackThread) {
2027  pthread_attr_t attr;
2028  pthread_t t;
2029  void *p;
2030  int res;
2031  res = pthread_attr_init(&attr);
2032  ASSERT_EQ(0, res);
2033  res = pthread_attr_setstacksize(&attr, 64 * 1024);
2034  ASSERT_EQ(0, res);
2035  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2036  ASSERT_EQ(0, res);
2037  res = pthread_join(t, &p);
2038  ASSERT_EQ(0, res);
2039  res = pthread_attr_destroy(&attr);
2040  ASSERT_EQ(0, res);
2041}
2042
2043TEST(MemorySanitizer, PreAllocatedStackThread) {
2044  pthread_attr_t attr;
2045  pthread_t t;
2046  int res;
2047  res = pthread_attr_init(&attr);
2048  ASSERT_EQ(0, res);
2049  void *stack;
2050  const size_t kStackSize = 64 * 1024;
2051  res = posix_memalign(&stack, 4096, kStackSize);
2052  ASSERT_EQ(0, res);
2053  res = pthread_attr_setstack(&attr, stack, kStackSize);
2054  ASSERT_EQ(0, res);
2055  // A small self-allocated stack can not be extended by the tool.
2056  // In this case pthread_create is expected to fail.
2057  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
2058  EXPECT_NE(0, res);
2059  res = pthread_attr_destroy(&attr);
2060  ASSERT_EQ(0, res);
2061}
2062
2063TEST(MemorySanitizer, pthread_getschedparam) {
2064  int policy;
2065  struct sched_param param;
2066  int res = pthread_getschedparam(pthread_self(), &policy, &param);
2067  ASSERT_EQ(0, res);
2068  EXPECT_NOT_POISONED(policy);
2069  EXPECT_NOT_POISONED(param.sched_priority);
2070}
2071
2072TEST(MemorySanitizer, pthread_key_create) {
2073  pthread_key_t key;
2074  int res = pthread_key_create(&key, NULL);
2075  assert(!res);
2076  EXPECT_NOT_POISONED(key);
2077  res = pthread_key_delete(key);
2078  assert(!res);
2079}
2080
2081TEST(MemorySanitizer, posix_memalign) {
2082  void *p;
2083  EXPECT_POISONED(p);
2084  int res = posix_memalign(&p, 4096, 13);
2085  ASSERT_EQ(0, res);
2086  EXPECT_NOT_POISONED(p);
2087  free(p);
2088}
2089
2090TEST(MemorySanitizer, inet_pton) {
2091  const char *s = "1:0:0:0:0:0:0:8";
2092  unsigned char buf[sizeof(struct in6_addr)];
2093  int res = inet_pton(AF_INET6, s, buf);
2094  ASSERT_EQ(1, res);
2095  EXPECT_NOT_POISONED(buf[0]);
2096  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
2097
2098  char s_out[INET6_ADDRSTRLEN];
2099  EXPECT_POISONED(s_out[3]);
2100  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
2101  ASSERT_NE((void*)0, q);
2102  EXPECT_NOT_POISONED(s_out[3]);
2103}
2104
2105TEST(MemorySanitizer, inet_aton) {
2106  const char *s = "127.0.0.1";
2107  struct in_addr in[2];
2108  int res = inet_aton(s, in);
2109  ASSERT_NE(0, res);
2110  EXPECT_NOT_POISONED(in[0]);
2111  EXPECT_POISONED(*(char *)(in + 1));
2112}
2113
2114TEST(MemorySanitizer, uname) {
2115  struct utsname u;
2116  int res = uname(&u);
2117  assert(!res);
2118  EXPECT_NOT_POISONED(strlen(u.sysname));
2119  EXPECT_NOT_POISONED(strlen(u.nodename));
2120  EXPECT_NOT_POISONED(strlen(u.release));
2121  EXPECT_NOT_POISONED(strlen(u.version));
2122  EXPECT_NOT_POISONED(strlen(u.machine));
2123}
2124
2125TEST(MemorySanitizer, gethostname) {
2126  char buf[100];
2127  int res = gethostname(buf, 100);
2128  assert(!res);
2129  EXPECT_NOT_POISONED(strlen(buf));
2130}
2131
2132TEST(MemorySanitizer, sysinfo) {
2133  struct sysinfo info;
2134  int res = sysinfo(&info);
2135  assert(!res);
2136  EXPECT_NOT_POISONED(info);
2137}
2138
2139TEST(MemorySanitizer, getpwuid) {
2140  struct passwd *p = getpwuid(0); // root
2141  assert(p);
2142  EXPECT_NOT_POISONED(p->pw_name);
2143  assert(p->pw_name);
2144  EXPECT_NOT_POISONED(p->pw_name[0]);
2145  EXPECT_NOT_POISONED(p->pw_uid);
2146  assert(p->pw_uid == 0);
2147}
2148
2149TEST(MemorySanitizer, getpwnam_r) {
2150  struct passwd pwd;
2151  struct passwd *pwdres;
2152  char buf[10000];
2153  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
2154  assert(!res);
2155  EXPECT_NOT_POISONED(pwd.pw_name);
2156  assert(pwd.pw_name);
2157  EXPECT_NOT_POISONED(pwd.pw_name[0]);
2158  EXPECT_NOT_POISONED(pwd.pw_uid);
2159  assert(pwd.pw_uid == 0);
2160}
2161
2162TEST(MemorySanitizer, getpwnam_r_positive) {
2163  struct passwd pwd;
2164  struct passwd *pwdres;
2165  char s[5];
2166  strncpy(s, "abcd", 5);
2167  __msan_poison(s, 5);
2168  char buf[10000];
2169  int res;
2170  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2171}
2172
2173TEST(MemorySanitizer, getgrnam_r) {
2174  struct group grp;
2175  struct group *grpres;
2176  char buf[10000];
2177  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2178  assert(!res);
2179  EXPECT_NOT_POISONED(grp.gr_name);
2180  assert(grp.gr_name);
2181  EXPECT_NOT_POISONED(grp.gr_name[0]);
2182  EXPECT_NOT_POISONED(grp.gr_gid);
2183}
2184
2185template<class T>
2186static bool applySlt(T value, T shadow) {
2187  __msan_partial_poison(&value, &shadow, sizeof(T));
2188  volatile bool zzz = true;
2189  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2190  // a shift-and-trunc to get at the highest bit.
2191  volatile bool v = value < 0 || zzz;
2192  return v;
2193}
2194
2195TEST(MemorySanitizer, SignedCompareWithZero) {
2196  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2197  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2198  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2199  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2200  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2201  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2202}
2203
2204template <class T, class S>
2205static T poisoned(T Va, S Sa) {
2206  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2207  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2208  T a;
2209  a = Va;
2210  __msan_partial_poison(&a, &Sa, sizeof(T));
2211  return a;
2212}
2213
2214TEST(MemorySanitizer, ICmpRelational) {
2215  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2216  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2217  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2218  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2219  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2220  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2221                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2222  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2223                  poisoned(-1, 0xFFFFFFFFU));
2224
2225  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2226  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2227  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2228  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2229  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2230  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2231                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2232  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2233                  poisoned(-1, 0xFFFFFFFFU));
2234
2235  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2236  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2237  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2238  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2239  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2240  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2241                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2242  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2243                  poisoned(-1, 0xFFFFFFFFU));
2244
2245  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2246  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2247  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2248  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2249  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2250  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2251                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2252  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2253                  poisoned(-1, 0xFFFFFFFFU));
2254
2255  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2256  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2257
2258  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2259}
2260
2261#if MSAN_HAS_M128
2262TEST(MemorySanitizer, ICmpVectorRelational) {
2263  EXPECT_NOT_POISONED(
2264      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2265                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2266  EXPECT_NOT_POISONED(
2267      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2268                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2269  EXPECT_POISONED(
2270      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2271                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2272  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2273                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2274}
2275#endif
2276
2277// Volatile bitfield store is implemented as load-mask-store
2278// Test that we don't warn on the store of (uninitialized) padding.
2279struct VolatileBitfieldStruct {
2280  volatile unsigned x : 1;
2281  unsigned y : 1;
2282};
2283
2284TEST(MemorySanitizer, VolatileBitfield) {
2285  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2286  S->x = 1;
2287  EXPECT_NOT_POISONED((unsigned)S->x);
2288  EXPECT_POISONED((unsigned)S->y);
2289}
2290
2291TEST(MemorySanitizer, UnalignedLoad) {
2292  char x[32];
2293  memset(x + 8, 0, 16);
2294  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2295  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2296  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2297  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2298  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2299  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2300  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2301
2302  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2303  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2304  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2305  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2306  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2307  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2308  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2309
2310  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2311  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2312  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2313  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2314  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2315  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2316  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2317  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2318  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2319}
2320
2321TEST(MemorySanitizer, UnalignedStore16) {
2322  char x[5];
2323  U2 y = 0;
2324  __msan_poison(&y, 1);
2325  __sanitizer_unaligned_store16(x + 1, y);
2326  EXPECT_POISONED(x[0]);
2327  EXPECT_POISONED(x[1]);
2328  EXPECT_NOT_POISONED(x[2]);
2329  EXPECT_POISONED(x[3]);
2330  EXPECT_POISONED(x[4]);
2331}
2332
2333TEST(MemorySanitizer, UnalignedStore32) {
2334  char x[8];
2335  U4 y4 = 0;
2336  __msan_poison(&y4, 2);
2337  __sanitizer_unaligned_store32(x+3, y4);
2338  EXPECT_POISONED(x[0]);
2339  EXPECT_POISONED(x[1]);
2340  EXPECT_POISONED(x[2]);
2341  EXPECT_POISONED(x[3]);
2342  EXPECT_POISONED(x[4]);
2343  EXPECT_NOT_POISONED(x[5]);
2344  EXPECT_NOT_POISONED(x[6]);
2345  EXPECT_POISONED(x[7]);
2346}
2347
2348TEST(MemorySanitizer, UnalignedStore64) {
2349  char x[16];
2350  U8 y = 0;
2351  __msan_poison(&y, 3);
2352  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2353  __sanitizer_unaligned_store64(x+3, y);
2354  EXPECT_POISONED(x[0]);
2355  EXPECT_POISONED(x[1]);
2356  EXPECT_POISONED(x[2]);
2357  EXPECT_POISONED(x[3]);
2358  EXPECT_POISONED(x[4]);
2359  EXPECT_POISONED(x[5]);
2360  EXPECT_NOT_POISONED(x[6]);
2361  EXPECT_NOT_POISONED(x[7]);
2362  EXPECT_NOT_POISONED(x[8]);
2363  EXPECT_POISONED(x[9]);
2364  EXPECT_NOT_POISONED(x[10]);
2365  EXPECT_POISONED(x[11]);
2366}
2367
2368TEST(MemorySanitizerDr, StoreInDSOTest) {
2369  if (!__msan_has_dynamic_component()) return;
2370  char* s = new char[10];
2371  dso_memfill(s, 9);
2372  EXPECT_NOT_POISONED(s[5]);
2373  EXPECT_POISONED(s[9]);
2374}
2375
2376int return_poisoned_int() {
2377  return ReturnPoisoned<U8>();
2378}
2379
2380TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2381  if (!__msan_has_dynamic_component()) return;
2382  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2383}
2384
2385NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2386  EXPECT_POISONED(x);
2387  EXPECT_POISONED(y);
2388  EXPECT_POISONED(z);
2389  return 0;
2390}
2391
2392static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2393  EXPECT_NOT_POISONED(x);
2394  EXPECT_NOT_POISONED(y);
2395  EXPECT_NOT_POISONED(z);
2396  return 0;
2397}
2398
2399TEST(MemorySanitizerDr, CallFromDSOTest) {
2400  if (!__msan_has_dynamic_component()) return;
2401  S8* x = GetPoisoned<S8>();
2402  S8* y = GetPoisoned<S8>();
2403  S8* z = GetPoisoned<S8>();
2404  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2405  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2406}
2407
2408static void StackStoreInDSOFn(int* x, int* y) {
2409  EXPECT_NOT_POISONED(*x);
2410  EXPECT_NOT_POISONED(*y);
2411}
2412
2413TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2414  if (!__msan_has_dynamic_component()) return;
2415  dso_stack_store(StackStoreInDSOFn, 1);
2416}
2417
2418TEST(MemorySanitizerOrigins, SetGet) {
2419  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2420  if (!TrackingOrigins()) return;
2421  int x;
2422  __msan_set_origin(&x, sizeof(x), 1234);
2423  EXPECT_EQ(1234, __msan_get_origin(&x));
2424  __msan_set_origin(&x, sizeof(x), 5678);
2425  EXPECT_EQ(5678, __msan_get_origin(&x));
2426  __msan_set_origin(&x, sizeof(x), 0);
2427  EXPECT_EQ(0, __msan_get_origin(&x));
2428}
2429
2430namespace {
2431struct S {
2432  U4 dummy;
2433  U2 a;
2434  U2 b;
2435};
2436
2437// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2438TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2439  if (!TrackingOrigins()) return;
2440
2441  S s;
2442  U4 origin = rand();  // NOLINT
2443  s.a = *GetPoisonedO<U2>(0, origin);
2444  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2445  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2446
2447  s.b = 42;
2448  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2449  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2450}
2451}  // namespace
2452
2453template<class T, class BinaryOp>
2454INLINE
2455void BinaryOpOriginTest(BinaryOp op) {
2456  U4 ox = rand();  //NOLINT
2457  U4 oy = rand();  //NOLINT
2458  T *x = GetPoisonedO<T>(0, ox, 0);
2459  T *y = GetPoisonedO<T>(1, oy, 0);
2460  T *z = GetPoisonedO<T>(2, 0, 0);
2461
2462  *z = op(*x, *y);
2463  U4 origin = __msan_get_origin(z);
2464  EXPECT_POISONED_O(*z, origin);
2465  EXPECT_EQ(true, origin == ox || origin == oy);
2466
2467  // y is poisoned, x is not.
2468  *x = 10101;
2469  *y = *GetPoisonedO<T>(1, oy);
2470  break_optimization(x);
2471  __msan_set_origin(z, sizeof(*z), 0);
2472  *z = op(*x, *y);
2473  EXPECT_POISONED_O(*z, oy);
2474  EXPECT_EQ(__msan_get_origin(z), oy);
2475
2476  // x is poisoned, y is not.
2477  *x = *GetPoisonedO<T>(0, ox);
2478  *y = 10101010;
2479  break_optimization(y);
2480  __msan_set_origin(z, sizeof(*z), 0);
2481  *z = op(*x, *y);
2482  EXPECT_POISONED_O(*z, ox);
2483  EXPECT_EQ(__msan_get_origin(z), ox);
2484}
2485
2486template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2487template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2488template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2489template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2490template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2491template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2492
2493TEST(MemorySanitizerOrigins, BinaryOp) {
2494  if (!TrackingOrigins()) return;
2495  BinaryOpOriginTest<S8>(XOR<S8>);
2496  BinaryOpOriginTest<U8>(ADD<U8>);
2497  BinaryOpOriginTest<S4>(SUB<S4>);
2498  BinaryOpOriginTest<S4>(MUL<S4>);
2499  BinaryOpOriginTest<U4>(OR<U4>);
2500  BinaryOpOriginTest<U4>(AND<U4>);
2501  BinaryOpOriginTest<double>(ADD<U4>);
2502  BinaryOpOriginTest<float>(ADD<S4>);
2503  BinaryOpOriginTest<double>(ADD<double>);
2504  BinaryOpOriginTest<float>(ADD<double>);
2505}
2506
2507TEST(MemorySanitizerOrigins, Unary) {
2508  if (!TrackingOrigins()) return;
2509  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2510  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2511  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2512  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2513
2514  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2515  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2516  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2517  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2518
2519  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2520  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2521  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2522  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2523
2524  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2525  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2526  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2527  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2528
2529  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2530  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2531}
2532
2533TEST(MemorySanitizerOrigins, EQ) {
2534  if (!TrackingOrigins()) return;
2535  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2536  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2537  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2538}
2539
2540TEST(MemorySanitizerOrigins, DIV) {
2541  if (!TrackingOrigins()) return;
2542  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2543  unsigned o = __LINE__;
2544  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2545}
2546
2547TEST(MemorySanitizerOrigins, SHIFT) {
2548  if (!TrackingOrigins()) return;
2549  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2550  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2551  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2552  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2553  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2554  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2555}
2556
2557template<class T, int N>
2558void MemCpyTest() {
2559  int ox = __LINE__;
2560  T *x = new T[N];
2561  T *y = new T[N];
2562  T *z = new T[N];
2563  T *q = new T[N];
2564  __msan_poison(x, N * sizeof(T));
2565  __msan_set_origin(x, N * sizeof(T), ox);
2566  __msan_set_origin(y, N * sizeof(T), 777777);
2567  __msan_set_origin(z, N * sizeof(T), 888888);
2568  EXPECT_NOT_POISONED(x);
2569  memcpy(y, x, N * sizeof(T));
2570  EXPECT_POISONED_O(y[0], ox);
2571  EXPECT_POISONED_O(y[N/2], ox);
2572  EXPECT_POISONED_O(y[N-1], ox);
2573  EXPECT_NOT_POISONED(x);
2574  void *res = mempcpy(q, x, N * sizeof(T));
2575  ASSERT_EQ(q + N, res);
2576  EXPECT_POISONED_O(q[0], ox);
2577  EXPECT_POISONED_O(q[N/2], ox);
2578  EXPECT_POISONED_O(q[N-1], ox);
2579  EXPECT_NOT_POISONED(x);
2580  memmove(z, x, N * sizeof(T));
2581  EXPECT_POISONED_O(z[0], ox);
2582  EXPECT_POISONED_O(z[N/2], ox);
2583  EXPECT_POISONED_O(z[N-1], ox);
2584}
2585
2586TEST(MemorySanitizerOrigins, LargeMemCpy) {
2587  if (!TrackingOrigins()) return;
2588  MemCpyTest<U1, 10000>();
2589  MemCpyTest<U8, 10000>();
2590}
2591
2592TEST(MemorySanitizerOrigins, SmallMemCpy) {
2593  if (!TrackingOrigins()) return;
2594  MemCpyTest<U8, 1>();
2595  MemCpyTest<U8, 2>();
2596  MemCpyTest<U8, 3>();
2597}
2598
2599TEST(MemorySanitizerOrigins, Select) {
2600  if (!TrackingOrigins()) return;
2601  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2602  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2603  S4 x;
2604  break_optimization(&x);
2605  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2606
2607  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2608  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2609}
2610
2611extern "C"
2612NOINLINE char AllocaTO() {
2613  int ar[100];
2614  break_optimization(ar);
2615  return ar[10];
2616  // fprintf(stderr, "Descr: %s\n",
2617  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2618}
2619
2620TEST(MemorySanitizerOrigins, Alloca) {
2621  if (!TrackingOrigins()) return;
2622  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2623  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2624  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2625  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2626}
2627
2628// FIXME: replace with a lit-like test.
2629TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2630  if (!TrackingOrigins()) return;
2631  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2632}
2633
2634NOINLINE int RetvalOriginTest(U4 origin) {
2635  int *a = new int;
2636  break_optimization(a);
2637  __msan_set_origin(a, sizeof(*a), origin);
2638  int res = *a;
2639  delete a;
2640  return res;
2641}
2642
2643TEST(MemorySanitizerOrigins, Retval) {
2644  if (!TrackingOrigins()) return;
2645  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2646}
2647
2648NOINLINE void ParamOriginTest(int param, U4 origin) {
2649  EXPECT_POISONED_O(param, origin);
2650}
2651
2652TEST(MemorySanitizerOrigins, Param) {
2653  if (!TrackingOrigins()) return;
2654  int *a = new int;
2655  U4 origin = __LINE__;
2656  break_optimization(a);
2657  __msan_set_origin(a, sizeof(*a), origin);
2658  ParamOriginTest(*a, origin);
2659  delete a;
2660}
2661
2662TEST(MemorySanitizerOrigins, Invoke) {
2663  if (!TrackingOrigins()) return;
2664  StructWithDtor s;  // Will cause the calls to become invokes.
2665  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2666}
2667
2668TEST(MemorySanitizerOrigins, strlen) {
2669  S8 alignment;
2670  break_optimization(&alignment);
2671  char x[4] = {'a', 'b', 0, 0};
2672  __msan_poison(&x[2], 1);
2673  U4 origin = __LINE__;
2674  __msan_set_origin(x, sizeof(x), origin);
2675  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2676}
2677
2678TEST(MemorySanitizerOrigins, wcslen) {
2679  wchar_t w[3] = {'a', 'b', 0};
2680  U4 origin = __LINE__;
2681  __msan_set_origin(w, sizeof(w), origin);
2682  __msan_poison(&w[2], sizeof(wchar_t));
2683  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2684}
2685
2686#if MSAN_HAS_M128
2687TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2688  __m128 x, y;
2689  U4 origin = __LINE__;
2690  __msan_set_origin(&x, sizeof(x), origin);
2691  __msan_poison(&x, sizeof(x));
2692  __builtin_ia32_storeups((float*)&y, x);
2693  EXPECT_POISONED_O(y, origin);
2694}
2695#endif
2696
2697NOINLINE void RecursiveMalloc(int depth) {
2698  static int count;
2699  count++;
2700  if ((count % (1024 * 1024)) == 0)
2701    printf("RecursiveMalloc: %d\n", count);
2702  int *x1 = new int;
2703  int *x2 = new int;
2704  break_optimization(x1);
2705  break_optimization(x2);
2706  if (depth > 0) {
2707    RecursiveMalloc(depth-1);
2708    RecursiveMalloc(depth-1);
2709  }
2710  delete x1;
2711  delete x2;
2712}
2713
2714TEST(MemorySanitizer, CallocOverflow) {
2715  size_t kArraySize = 4096;
2716  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2717  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2718  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2719  EXPECT_EQ(0L, Ident(p));
2720}
2721
2722TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2723  RecursiveMalloc(22);
2724}
2725