msan_test.cc revision b916e6a9b3efa4907b70a2dcd418c76b044171e7 
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 <stdlib.h>
23#include <stdarg.h>
24#include <stdio.h>
25#include <assert.h>
26#include <wchar.h>
27#include <math.h>
28
29#include <arpa/inet.h>
30#include <dlfcn.h>
31#include <grp.h>
32#include <unistd.h>
33#include <link.h>
34#include <limits.h>
35#include <sys/time.h>
36#include <sys/types.h>
37#include <sys/stat.h>
38#include <fcntl.h>
39#include <sys/resource.h>
40#include <sys/ioctl.h>
41#include <sys/utsname.h>
42#include <sys/mman.h>
43#include <sys/vfs.h>
44#include <dirent.h>
45#include <pwd.h>
46#include <sys/socket.h>
47#include <netdb.h>
48
49#if defined(__i386__) || defined(__x86_64__)
50# include <emmintrin.h>
51# define MSAN_HAS_M128 1
52#else
53# define MSAN_HAS_M128 0
54#endif
55
56typedef unsigned char      U1;
57typedef unsigned short     U2;  // NOLINT
58typedef unsigned int       U4;
59typedef unsigned long long U8;  // NOLINT
60typedef   signed char      S1;
61typedef   signed short     S2;  // NOLINT
62typedef   signed int       S4;
63typedef   signed long long S8;  // NOLINT
64#define NOINLINE      __attribute__((noinline))
65#define INLINE      __attribute__((always_inline))
66
67static bool TrackingOrigins() {
68  S8 x;
69  __msan_set_origin(&x, sizeof(x), 0x1234);
70  U4 origin = __msan_get_origin(&x);
71  __msan_set_origin(&x, sizeof(x), 0);
72  return origin == 0x1234;
73}
74
75#define EXPECT_UMR(action) \
76    do {                        \
77      __msan_set_expect_umr(1); \
78      action;                   \
79      __msan_set_expect_umr(0); \
80    } while (0)
81
82#define EXPECT_UMR_O(action, origin) \
83    do {                                            \
84      __msan_set_expect_umr(1);                     \
85      action;                                       \
86      __msan_set_expect_umr(0);                     \
87      if (TrackingOrigins())                        \
88        EXPECT_EQ(origin, __msan_get_umr_origin()); \
89    } while (0)
90
91#define EXPECT_UMR_S(action, stack_origin) \
92    do {                                            \
93      __msan_set_expect_umr(1);                     \
94      action;                                       \
95      __msan_set_expect_umr(0);                     \
96      U4 id = __msan_get_umr_origin();             \
97      const char *str = __msan_get_origin_descr_if_stack(id); \
98      if (!str || strcmp(str, stack_origin)) {      \
99        fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \
100                id, stack_origin, str);  \
101        EXPECT_EQ(1, 0);                            \
102      }                                             \
103    } while (0)
104
105#define EXPECT_POISONED(x) ExpectPoisoned(x)
106
107template<typename T>
108void ExpectPoisoned(const T& t) {
109  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
110}
111
112#define EXPECT_POISONED_O(x, origin) \
113  ExpectPoisonedWithOrigin(x, origin)
114
115template<typename T>
116void ExpectPoisonedWithOrigin(const T& t, unsigned origin) {
117  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
118  if (TrackingOrigins())
119    EXPECT_EQ(origin, __msan_get_origin((void*)&t));
120}
121
122#define EXPECT_POISONED_S(x, stack_origin) \
123  ExpectPoisonedWithStackOrigin(x, stack_origin)
124
125template<typename T>
126void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) {
127  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
128  U4 id = __msan_get_origin((void*)&t);
129  const char *str = __msan_get_origin_descr_if_stack(id);
130  if (!str || strcmp(str, stack_origin)) {
131    fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s",
132        id, stack_origin, str);
133    EXPECT_EQ(1, 0);
134  }
135}
136
137#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x)
138
139template<typename T>
140void ExpectNotPoisoned(const T& t) {
141  EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t)));
142}
143
144static U8 poisoned_array[100];
145template<class T>
146T *GetPoisoned(int i = 0, T val = 0) {
147  T *res = (T*)&poisoned_array[i];
148  *res = val;
149  __msan_poison(&poisoned_array[i], sizeof(T));
150  return res;
151}
152
153template<class T>
154T *GetPoisonedO(int i, U4 origin, T val = 0) {
155  T *res = (T*)&poisoned_array[i];
156  *res = val;
157  __msan_poison(&poisoned_array[i], sizeof(T));
158  __msan_set_origin(&poisoned_array[i], sizeof(T), origin);
159  return res;
160}
161
162// This function returns its parameter but in such a way that compiler
163// can not prove it.
164template<class T>
165NOINLINE
166static T Ident(T t) {
167  volatile T ret = t;
168  return ret;
169}
170
171template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); }
172
173static volatile int g_one = 1;
174static volatile int g_zero = 0;
175static volatile int g_0 = 0;
176static volatile int g_1 = 1;
177
178S4 a_s4[100];
179S8 a_s8[100];
180
181// Check that malloc poisons memory.
182// A lot of tests below depend on this.
183TEST(MemorySanitizerSanity, PoisonInMalloc) {
184  int *x = (int*)malloc(sizeof(int));
185  EXPECT_POISONED(*x);
186  free(x);
187}
188
189TEST(MemorySanitizer, NegativeTest1) {
190  S4 *x = GetPoisoned<S4>();
191  if (g_one)
192    *x = 0;
193  EXPECT_NOT_POISONED(*x);
194}
195
196TEST(MemorySanitizer, PositiveTest1) {
197  // Load to store.
198  EXPECT_POISONED(*GetPoisoned<S1>());
199  EXPECT_POISONED(*GetPoisoned<S2>());
200  EXPECT_POISONED(*GetPoisoned<S4>());
201  EXPECT_POISONED(*GetPoisoned<S8>());
202
203  // S->S conversions.
204  EXPECT_POISONED(*GetPoisoned<S1>());
205  EXPECT_POISONED(*GetPoisoned<S1>());
206  EXPECT_POISONED(*GetPoisoned<S1>());
207
208  EXPECT_POISONED(*GetPoisoned<S2>());
209  EXPECT_POISONED(*GetPoisoned<S2>());
210  EXPECT_POISONED(*GetPoisoned<S2>());
211
212  EXPECT_POISONED(*GetPoisoned<S4>());
213  EXPECT_POISONED(*GetPoisoned<S4>());
214  EXPECT_POISONED(*GetPoisoned<S4>());
215
216  EXPECT_POISONED(*GetPoisoned<S8>());
217  EXPECT_POISONED(*GetPoisoned<S8>());
218  EXPECT_POISONED(*GetPoisoned<S8>());
219
220  // ZExt
221  EXPECT_POISONED(*GetPoisoned<U1>());
222  EXPECT_POISONED(*GetPoisoned<U1>());
223  EXPECT_POISONED(*GetPoisoned<U1>());
224  EXPECT_POISONED(*GetPoisoned<U2>());
225  EXPECT_POISONED(*GetPoisoned<U2>());
226  EXPECT_POISONED(*GetPoisoned<U4>());
227
228  // Unary ops.
229  EXPECT_POISONED(- *GetPoisoned<S4>());
230
231  EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1));
232
233
234  a_s4[g_zero] = 1 - *GetPoisoned<S4>();
235  a_s4[g_zero] = 1 + *GetPoisoned<S4>();
236}
237
238TEST(MemorySanitizer, Phi1) {
239  S4 c;
240  if (g_one) {
241    c = *GetPoisoned<S4>();
242  } else {
243    break_optimization(0);
244    c = 0;
245  }
246  EXPECT_POISONED(c);
247}
248
249TEST(MemorySanitizer, Phi2) {
250  S4 i = *GetPoisoned<S4>();
251  S4 n = g_one;
252  EXPECT_UMR(for (; i < g_one; i++););
253  EXPECT_POISONED(i);
254}
255
256NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); }
257NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); }
258NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); }
259
260TEST(MemorySanitizer, ArgTest) {
261  Arg1ExpectUMR(*GetPoisoned<S4>());
262  Arg2ExpectUMR(0, *GetPoisoned<S4>());
263  Arg3ExpectUMR(0, 1, *GetPoisoned<S8>());
264}
265
266
267TEST(MemorySanitizer, CallAndRet) {
268  if (!__msan_has_dynamic_component()) return;
269  ReturnPoisoned<S1>();
270  ReturnPoisoned<S2>();
271  ReturnPoisoned<S4>();
272  ReturnPoisoned<S8>();
273
274  EXPECT_POISONED(ReturnPoisoned<S1>());
275  EXPECT_POISONED(ReturnPoisoned<S2>());
276  EXPECT_POISONED(ReturnPoisoned<S4>());
277  EXPECT_POISONED(ReturnPoisoned<S8>());
278}
279
280// malloc() in the following test may be optimized to produce a compile-time
281// undef value. Check that we trap on the volatile assignment anyway.
282TEST(MemorySanitizer, DISABLED_MallocNoIdent) {
283  S4 *x = (int*)malloc(sizeof(S4));
284  EXPECT_POISONED(*x);
285  free(x);
286}
287
288TEST(MemorySanitizer, Malloc) {
289  S4 *x = (int*)Ident(malloc(sizeof(S4)));
290  EXPECT_POISONED(*x);
291  free(x);
292}
293
294TEST(MemorySanitizer, Realloc) {
295  S4 *x = (int*)Ident(realloc(0, sizeof(S4)));
296  EXPECT_POISONED(x[0]);
297  x[0] = 1;
298  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
299  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
300  EXPECT_POISONED(x[1]);
301  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
302  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
303  EXPECT_POISONED(x[2]);
304  EXPECT_POISONED(x[1]);
305  x[2] = 1;  // Init this here. Check that after realloc it is poisoned again.
306  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
307  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
308  EXPECT_POISONED(x[1]);
309  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
310  EXPECT_POISONED(x[1]);
311  EXPECT_POISONED(x[2]);
312  free(x);
313}
314
315TEST(MemorySanitizer, Calloc) {
316  S4 *x = (int*)Ident(calloc(1, sizeof(S4)));
317  EXPECT_NOT_POISONED(*x);  // Should not be poisoned.
318  // EXPECT_EQ(0, *x);
319  free(x);
320}
321
322TEST(MemorySanitizer, AndOr) {
323  U4 *p = GetPoisoned<U4>();
324  // We poison two bytes in the midle of a 4-byte word to make the test
325  // correct regardless of endianness.
326  ((U1*)p)[1] = 0;
327  ((U1*)p)[2] = 0xff;
328  EXPECT_NOT_POISONED(*p & 0x00ffff00);
329  EXPECT_NOT_POISONED(*p & 0x00ff0000);
330  EXPECT_NOT_POISONED(*p & 0x0000ff00);
331  EXPECT_POISONED(*p & 0xff000000);
332  EXPECT_POISONED(*p & 0x000000ff);
333  EXPECT_POISONED(*p & 0x0000ffff);
334  EXPECT_POISONED(*p & 0xffff0000);
335
336  EXPECT_NOT_POISONED(*p | 0xff0000ff);
337  EXPECT_NOT_POISONED(*p | 0xff00ffff);
338  EXPECT_NOT_POISONED(*p | 0xffff00ff);
339  EXPECT_POISONED(*p | 0xff000000);
340  EXPECT_POISONED(*p | 0x000000ff);
341  EXPECT_POISONED(*p | 0x0000ffff);
342  EXPECT_POISONED(*p | 0xffff0000);
343
344  EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>());
345}
346
347template<class T>
348static bool applyNot(T value, T shadow) {
349  __msan_partial_poison(&value, &shadow, sizeof(T));
350  return !value;
351}
352
353TEST(MemorySanitizer, Not) {
354  EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0));
355  EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0));
356  EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF));
357  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF));
358  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF));
359  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF));
360  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000));
361  EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000));
362  EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000));
363  EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000));
364
365  EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0));
366  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE));
367  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0));
368  EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF));
369
370  EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1)));
371  EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2)));
372}
373
374TEST(MemorySanitizer, Shift) {
375  U4 *up = GetPoisoned<U4>();
376  ((U1*)up)[0] = 0;
377  ((U1*)up)[3] = 0xff;
378  EXPECT_NOT_POISONED(*up >> 30);
379  EXPECT_NOT_POISONED(*up >> 24);
380  EXPECT_POISONED(*up >> 23);
381  EXPECT_POISONED(*up >> 10);
382
383  EXPECT_NOT_POISONED(*up << 30);
384  EXPECT_NOT_POISONED(*up << 24);
385  EXPECT_POISONED(*up << 23);
386  EXPECT_POISONED(*up << 10);
387
388  S4 *sp = (S4*)up;
389  EXPECT_NOT_POISONED(*sp >> 30);
390  EXPECT_NOT_POISONED(*sp >> 24);
391  EXPECT_POISONED(*sp >> 23);
392  EXPECT_POISONED(*sp >> 10);
393
394  sp = GetPoisoned<S4>();
395  ((S1*)sp)[1] = 0;
396  ((S1*)sp)[2] = 0;
397  EXPECT_POISONED(*sp >> 31);
398
399  EXPECT_POISONED(100 >> *GetPoisoned<S4>());
400  EXPECT_POISONED(100U >> *GetPoisoned<S4>());
401}
402
403NOINLINE static int GetPoisonedZero() {
404  int *zero = new int;
405  *zero = 0;
406  __msan_poison(zero, sizeof(*zero));
407  int res = *zero;
408  delete zero;
409  return res;
410}
411
412TEST(MemorySanitizer, LoadFromDirtyAddress) {
413  int *a = new int;
414  *a = 0;
415  EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()]));
416  delete a;
417}
418
419TEST(MemorySanitizer, StoreToDirtyAddress) {
420  int *a = new int;
421  EXPECT_UMR(a[GetPoisonedZero()] = 0);
422  break_optimization(a);
423  delete a;
424}
425
426
427NOINLINE void StackTestFunc() {
428  S4 p4;
429  S4 ok4 = 1;
430  S2 p2;
431  S2 ok2 = 1;
432  S1 p1;
433  S1 ok1 = 1;
434  break_optimization(&p4);
435  break_optimization(&ok4);
436  break_optimization(&p2);
437  break_optimization(&ok2);
438  break_optimization(&p1);
439  break_optimization(&ok1);
440
441  EXPECT_POISONED(p4);
442  EXPECT_POISONED(p2);
443  EXPECT_POISONED(p1);
444  EXPECT_NOT_POISONED(ok1);
445  EXPECT_NOT_POISONED(ok2);
446  EXPECT_NOT_POISONED(ok4);
447}
448
449TEST(MemorySanitizer, StackTest) {
450  StackTestFunc();
451}
452
453NOINLINE void StackStressFunc() {
454  int foo[10000];
455  break_optimization(foo);
456}
457
458TEST(MemorySanitizer, DISABLED_StackStressTest) {
459  for (int i = 0; i < 1000000; i++)
460    StackStressFunc();
461}
462
463template<class T>
464void TestFloatingPoint() {
465  static volatile T v;
466  static T g[100];
467  break_optimization(&g);
468  T *x = GetPoisoned<T>();
469  T *y = GetPoisoned<T>(1);
470  EXPECT_POISONED(*x);
471  EXPECT_POISONED((long long)*x);
472  EXPECT_POISONED((int)*x);
473  g[0] = *x;
474  g[1] = *x + *y;
475  g[2] = *x - *y;
476  g[3] = *x * *y;
477}
478
479TEST(MemorySanitizer, FloatingPointTest) {
480  TestFloatingPoint<float>();
481  TestFloatingPoint<double>();
482}
483
484TEST(MemorySanitizer, DynMem) {
485  S4 x = 0;
486  S4 *y = GetPoisoned<S4>();
487  memcpy(y, &x, g_one * sizeof(S4));
488  EXPECT_NOT_POISONED(*y);
489}
490
491static char *DynRetTestStr;
492
493TEST(MemorySanitizer, DynRet) {
494  if (!__msan_has_dynamic_component()) return;
495  ReturnPoisoned<S8>();
496  EXPECT_NOT_POISONED(clearenv());
497}
498
499
500TEST(MemorySanitizer, DynRet1) {
501  if (!__msan_has_dynamic_component()) return;
502  ReturnPoisoned<S8>();
503}
504
505struct LargeStruct {
506  S4 x[10];
507};
508
509NOINLINE
510LargeStruct LargeRetTest() {
511  LargeStruct res;
512  res.x[0] = *GetPoisoned<S4>();
513  res.x[1] = *GetPoisoned<S4>();
514  res.x[2] = *GetPoisoned<S4>();
515  res.x[3] = *GetPoisoned<S4>();
516  res.x[4] = *GetPoisoned<S4>();
517  res.x[5] = *GetPoisoned<S4>();
518  res.x[6] = *GetPoisoned<S4>();
519  res.x[7] = *GetPoisoned<S4>();
520  res.x[8] = *GetPoisoned<S4>();
521  res.x[9] = *GetPoisoned<S4>();
522  return res;
523}
524
525TEST(MemorySanitizer, LargeRet) {
526  LargeStruct a = LargeRetTest();
527  EXPECT_POISONED(a.x[0]);
528  EXPECT_POISONED(a.x[9]);
529}
530
531TEST(MemorySanitizer, fread) {
532  char *x = new char[32];
533  FILE *f = fopen("/proc/self/stat", "r");
534  assert(f);
535  fread(x, 1, 32, f);
536  EXPECT_NOT_POISONED(x[0]);
537  EXPECT_NOT_POISONED(x[16]);
538  EXPECT_NOT_POISONED(x[31]);
539  fclose(f);
540  delete x;
541}
542
543TEST(MemorySanitizer, read) {
544  char *x = new char[32];
545  int fd = open("/proc/self/stat", O_RDONLY);
546  assert(fd > 0);
547  int sz = read(fd, x, 32);
548  assert(sz == 32);
549  EXPECT_NOT_POISONED(x[0]);
550  EXPECT_NOT_POISONED(x[16]);
551  EXPECT_NOT_POISONED(x[31]);
552  close(fd);
553  delete x;
554}
555
556TEST(MemorySanitizer, pread) {
557  char *x = new char[32];
558  int fd = open("/proc/self/stat", O_RDONLY);
559  assert(fd > 0);
560  int sz = pread(fd, x, 32, 0);
561  assert(sz == 32);
562  EXPECT_NOT_POISONED(x[0]);
563  EXPECT_NOT_POISONED(x[16]);
564  EXPECT_NOT_POISONED(x[31]);
565  close(fd);
566  delete x;
567}
568
569TEST(MemorySanitizer, readv) {
570  char buf[2011];
571  struct iovec iov[2];
572  iov[0].iov_base = buf + 1;
573  iov[0].iov_len = 5;
574  iov[1].iov_base = buf + 10;
575  iov[1].iov_len = 2000;
576  int fd = open("/proc/self/stat", O_RDONLY);
577  assert(fd > 0);
578  int sz = readv(fd, iov, 2);
579  ASSERT_LT(sz, 5 + 2000);
580  ASSERT_GT(sz, iov[0].iov_len);
581  EXPECT_POISONED(buf[0]);
582  EXPECT_NOT_POISONED(buf[1]);
583  EXPECT_NOT_POISONED(buf[5]);
584  EXPECT_POISONED(buf[6]);
585  EXPECT_POISONED(buf[9]);
586  EXPECT_NOT_POISONED(buf[10]);
587  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
588  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
589  close(fd);
590}
591
592TEST(MemorySanitizer, preadv) {
593  char buf[2011];
594  struct iovec iov[2];
595  iov[0].iov_base = buf + 1;
596  iov[0].iov_len = 5;
597  iov[1].iov_base = buf + 10;
598  iov[1].iov_len = 2000;
599  int fd = open("/proc/self/stat", O_RDONLY);
600  assert(fd > 0);
601  int sz = preadv(fd, iov, 2, 3);
602  ASSERT_LT(sz, 5 + 2000);
603  ASSERT_GT(sz, iov[0].iov_len);
604  EXPECT_POISONED(buf[0]);
605  EXPECT_NOT_POISONED(buf[1]);
606  EXPECT_NOT_POISONED(buf[5]);
607  EXPECT_POISONED(buf[6]);
608  EXPECT_POISONED(buf[9]);
609  EXPECT_NOT_POISONED(buf[10]);
610  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
611  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
612  close(fd);
613}
614
615// FIXME: fails now.
616TEST(MemorySanitizer, DISABLED_ioctl) {
617  struct winsize ws;
618  EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0);
619  EXPECT_NOT_POISONED(ws.ws_col);
620}
621
622TEST(MemorySanitizer, readlink) {
623  char *x = new char[1000];
624  readlink("/proc/self/exe", x, 1000);
625  EXPECT_NOT_POISONED(x[0]);
626  delete [] x;
627}
628
629
630TEST(MemorySanitizer, stat) {
631  struct stat* st = new struct stat;
632  int res = stat("/proc/self/stat", st);
633  assert(!res);
634  EXPECT_NOT_POISONED(st->st_dev);
635  EXPECT_NOT_POISONED(st->st_mode);
636  EXPECT_NOT_POISONED(st->st_size);
637}
638
639TEST(MemorySanitizer, statfs) {
640  struct statfs* st = new struct statfs;
641  int res = statfs("/", st);
642  assert(!res);
643  EXPECT_NOT_POISONED(st->f_type);
644  EXPECT_NOT_POISONED(st->f_bfree);
645  EXPECT_NOT_POISONED(st->f_namelen);
646}
647
648TEST(MemorySanitizer, pipe) {
649  int* pipefd = new int[2];
650  int res = pipe(pipefd);
651  assert(!res);
652  EXPECT_NOT_POISONED(pipefd[0]);
653  EXPECT_NOT_POISONED(pipefd[1]);
654  close(pipefd[0]);
655  close(pipefd[1]);
656}
657
658TEST(MemorySanitizer, pipe2) {
659  int* pipefd = new int[2];
660  int res = pipe2(pipefd, O_NONBLOCK);
661  assert(!res);
662  EXPECT_NOT_POISONED(pipefd[0]);
663  EXPECT_NOT_POISONED(pipefd[1]);
664  close(pipefd[0]);
665  close(pipefd[1]);
666}
667
668TEST(MemorySanitizer, socketpair) {
669  int sv[2];
670  int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
671  assert(!res);
672  EXPECT_NOT_POISONED(sv[0]);
673  EXPECT_NOT_POISONED(sv[1]);
674  close(sv[0]);
675  close(sv[1]);
676}
677
678TEST(MemorySanitizer, bind_getsockname) {
679  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
680
681  struct sockaddr_in sai;
682  memset(&sai, 0, sizeof(sai));
683  sai.sin_family = AF_UNIX;
684  int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai));
685
686  assert(!res);
687  char buf[200];
688  socklen_t addrlen;
689  EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen));
690
691  addrlen = sizeof(buf);
692  res = getsockname(sock, (struct sockaddr *)&buf, &addrlen);
693  EXPECT_NOT_POISONED(addrlen);
694  EXPECT_NOT_POISONED(buf[0]);
695  EXPECT_NOT_POISONED(buf[addrlen - 1]);
696  EXPECT_POISONED(buf[addrlen]);
697  close(sock);
698}
699
700TEST(MemorySanitizer, accept) {
701  int listen_socket = socket(AF_INET, SOCK_STREAM, 0);
702  ASSERT_LT(0, listen_socket);
703
704  struct sockaddr_in sai;
705  sai.sin_family = AF_INET;
706  sai.sin_port = 0;
707  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
708  int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai));
709  ASSERT_EQ(0, res);
710
711  res = listen(listen_socket, 1);
712  ASSERT_EQ(0, res);
713
714  socklen_t sz = sizeof(sai);
715  res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz);
716  ASSERT_EQ(0, res);
717  ASSERT_EQ(sizeof(sai), sz);
718
719  int connect_socket = socket(AF_INET, SOCK_STREAM, 0);
720  ASSERT_LT(0, connect_socket);
721  res = fcntl(connect_socket, F_SETFL, O_NONBLOCK);
722  ASSERT_EQ(0, res);
723  res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai));
724  ASSERT_EQ(-1, res);
725  ASSERT_EQ(EINPROGRESS, errno);
726
727  __msan_poison(&sai, sizeof(sai));
728  int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz);
729  ASSERT_LT(0, new_sock);
730  ASSERT_EQ(sizeof(sai), sz);
731  EXPECT_NOT_POISONED(sai);
732
733  __msan_poison(&sai, sizeof(sai));
734  res = getpeername(new_sock, (struct sockaddr *)&sai, &sz);
735  ASSERT_EQ(0, res);
736  ASSERT_EQ(sizeof(sai), sz);
737  EXPECT_NOT_POISONED(sai);
738
739  close(new_sock);
740  close(connect_socket);
741  close(listen_socket);
742}
743
744TEST(MemorySanitizer, getaddrinfo) {
745  struct addrinfo *ai;
746  struct addrinfo hints;
747  memset(&hints, 0, sizeof(hints));
748  hints.ai_family = AF_INET;
749  int res = getaddrinfo("localhost", NULL, &hints, &ai);
750  ASSERT_EQ(0, res);
751  EXPECT_NOT_POISONED(*ai);
752  ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen);
753  EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr);
754}
755
756#define EXPECT_HOSTENT_NOT_POISONED(he)        \
757  do {                                         \
758    EXPECT_NOT_POISONED(*(he));                \
759    ASSERT_NE((void *) 0, (he)->h_name);       \
760    ASSERT_NE((void *) 0, (he)->h_aliases);    \
761    ASSERT_NE((void *) 0, (he)->h_addr_list);  \
762    EXPECT_NOT_POISONED(strlen((he)->h_name)); \
763    char **p = (he)->h_aliases;                \
764    while (*p) {                               \
765      EXPECT_NOT_POISONED(strlen(*p));         \
766      ++p;                                     \
767    }                                          \
768    char **q = (he)->h_addr_list;              \
769    while (*q) {                               \
770      EXPECT_NOT_POISONED(*q[0]);              \
771      ++q;                                     \
772    }                                          \
773    EXPECT_NOT_POISONED(*q);                   \
774  } while (0)
775
776TEST(MemorySanitizer, gethostent) {
777  struct hostent *he = gethostent();
778  ASSERT_NE((void *)NULL, he);
779  EXPECT_HOSTENT_NOT_POISONED(he);
780}
781
782TEST(MemorySanitizer, gethostbyname) {
783  struct hostent *he = gethostbyname("localhost");
784  ASSERT_NE((void *)NULL, he);
785  EXPECT_HOSTENT_NOT_POISONED(he);
786}
787
788TEST(MemorySanitizer, gethostbyname2) {
789  struct hostent *he = gethostbyname2("localhost", AF_INET);
790  ASSERT_NE((void *)NULL, he);
791  EXPECT_HOSTENT_NOT_POISONED(he);
792}
793
794TEST(MemorySanitizer, gethostbyaddr) {
795  in_addr_t addr = inet_addr("127.0.0.1");
796  EXPECT_NOT_POISONED(addr);
797  struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
798  ASSERT_NE((void *)NULL, he);
799  EXPECT_HOSTENT_NOT_POISONED(he);
800}
801
802TEST(MemorySanitizer, gethostent_r) {
803  char buf[2000];
804  struct hostent he;
805  struct hostent *result;
806  int err;
807  int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
808  ASSERT_EQ(0, res);
809  EXPECT_NOT_POISONED(result);
810  ASSERT_NE((void *)NULL, result);
811  EXPECT_HOSTENT_NOT_POISONED(result);
812  EXPECT_NOT_POISONED(err);
813}
814
815TEST(MemorySanitizer, gethostbyname_r) {
816  char buf[2000];
817  struct hostent he;
818  struct hostent *result;
819  int err;
820  int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
821  ASSERT_EQ(0, res);
822  EXPECT_NOT_POISONED(result);
823  ASSERT_NE((void *)NULL, result);
824  EXPECT_HOSTENT_NOT_POISONED(result);
825  EXPECT_NOT_POISONED(err);
826}
827
828TEST(MemorySanitizer, gethostbyname2_r) {
829  char buf[2000];
830  struct hostent he;
831  struct hostent *result;
832  int err;
833  int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
834                             &result, &err);
835  ASSERT_EQ(0, res);
836  EXPECT_NOT_POISONED(result);
837  ASSERT_NE((void *)NULL, result);
838  EXPECT_HOSTENT_NOT_POISONED(result);
839  EXPECT_NOT_POISONED(err);
840}
841
842TEST(MemorySanitizer, gethostbyaddr_r) {
843  char buf[2000];
844  struct hostent he;
845  struct hostent *result;
846  int err;
847  in_addr_t addr = inet_addr("127.0.0.1");
848  EXPECT_NOT_POISONED(addr);
849  int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
850                            &result, &err);
851  ASSERT_EQ(0, res);
852  EXPECT_NOT_POISONED(result);
853  ASSERT_NE((void *)NULL, result);
854  EXPECT_HOSTENT_NOT_POISONED(result);
855  EXPECT_NOT_POISONED(err);
856}
857
858TEST(MemorySanitizer, getsockopt) {
859  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
860  struct linger l[2];
861  socklen_t sz = sizeof(l[0]);
862  int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
863  ASSERT_EQ(0, res);
864  ASSERT_EQ(sizeof(l[0]), sz);
865  EXPECT_NOT_POISONED(l[0]);
866  EXPECT_POISONED(*(char *)(l + 1));
867}
868
869TEST(MemorySanitizer, getcwd) {
870  char path[PATH_MAX + 1];
871  char* res = getcwd(path, sizeof(path));
872  assert(res);
873  EXPECT_NOT_POISONED(path[0]);
874}
875
876TEST(MemorySanitizer, getcwd_gnu) {
877  char* res = getcwd(NULL, 0);
878  assert(res);
879  EXPECT_NOT_POISONED(res[0]);
880  free(res);
881}
882
883TEST(MemorySanitizer, readdir) {
884  DIR *dir = opendir(".");
885  struct dirent *d = readdir(dir);
886  assert(d);
887  EXPECT_NOT_POISONED(d->d_name[0]);
888  closedir(dir);
889}
890
891TEST(MemorySanitizer, realpath) {
892  const char* relpath = ".";
893  char path[PATH_MAX + 1];
894  char* res = realpath(relpath, path);
895  assert(res);
896  EXPECT_NOT_POISONED(path[0]);
897}
898
899TEST(MemorySanitizer, memcpy) {
900  char* x = new char[2];
901  char* y = new char[2];
902  x[0] = 1;
903  x[1] = *GetPoisoned<char>();
904  memcpy(y, x, 2);
905  EXPECT_NOT_POISONED(y[0]);
906  EXPECT_POISONED(y[1]);
907}
908
909TEST(MemorySanitizer, memmove) {
910  char* x = new char[2];
911  char* y = new char[2];
912  x[0] = 1;
913  x[1] = *GetPoisoned<char>();
914  memmove(y, x, 2);
915  EXPECT_NOT_POISONED(y[0]);
916  EXPECT_POISONED(y[1]);
917}
918
919TEST(MemorySanitizer, strdup) {
920  char buf[4] = "abc";
921  __msan_poison(buf + 2, sizeof(*buf));
922  char *x = strdup(buf);
923  EXPECT_NOT_POISONED(x[0]);
924  EXPECT_NOT_POISONED(x[1]);
925  EXPECT_POISONED(x[2]);
926  EXPECT_NOT_POISONED(x[3]);
927  free(x);
928}
929
930TEST(MemorySanitizer, strndup) {
931  char buf[4] = "abc";
932  __msan_poison(buf + 2, sizeof(*buf));
933  char *x = strndup(buf, 3);
934  EXPECT_NOT_POISONED(x[0]);
935  EXPECT_NOT_POISONED(x[1]);
936  EXPECT_POISONED(x[2]);
937  EXPECT_NOT_POISONED(x[3]);
938  free(x);
939}
940
941TEST(MemorySanitizer, strndup_short) {
942  char buf[4] = "abc";
943  __msan_poison(buf + 1, sizeof(*buf));
944  __msan_poison(buf + 2, sizeof(*buf));
945  char *x = strndup(buf, 2);
946  EXPECT_NOT_POISONED(x[0]);
947  EXPECT_POISONED(x[1]);
948  EXPECT_NOT_POISONED(x[2]);
949  free(x);
950}
951
952
953template<class T, int size>
954void TestOverlapMemmove() {
955  T *x = new T[size];
956  assert(size >= 3);
957  x[2] = 0;
958  memmove(x, x + 1, (size - 1) * sizeof(T));
959  EXPECT_NOT_POISONED(x[1]);
960  if (!__msan_has_dynamic_component()) {
961    // FIXME: under DR we will lose this information
962    // because accesses in memmove will unpoisin the shadow.
963    // We need to use our own memove implementation instead of libc's.
964    EXPECT_POISONED(x[0]);
965    EXPECT_POISONED(x[2]);
966  }
967  delete [] x;
968}
969
970TEST(MemorySanitizer, overlap_memmove) {
971  TestOverlapMemmove<U1, 10>();
972  TestOverlapMemmove<U1, 1000>();
973  TestOverlapMemmove<U8, 4>();
974  TestOverlapMemmove<U8, 1000>();
975}
976
977TEST(MemorySanitizer, strcpy) {  // NOLINT
978  char* x = new char[3];
979  char* y = new char[3];
980  x[0] = 'a';
981  x[1] = *GetPoisoned<char>(1, 1);
982  x[2] = 0;
983  strcpy(y, x);  // NOLINT
984  EXPECT_NOT_POISONED(y[0]);
985  EXPECT_POISONED(y[1]);
986  EXPECT_NOT_POISONED(y[2]);
987}
988
989TEST(MemorySanitizer, strncpy) {  // NOLINT
990  char* x = new char[3];
991  char* y = new char[3];
992  x[0] = 'a';
993  x[1] = *GetPoisoned<char>(1, 1);
994  x[2] = 0;
995  strncpy(y, x, 2);  // NOLINT
996  EXPECT_NOT_POISONED(y[0]);
997  EXPECT_POISONED(y[1]);
998  EXPECT_POISONED(y[2]);
999}
1000
1001TEST(MemorySanitizer, strtol) {
1002  char *e;
1003  assert(1 == strtol("1", &e, 10));
1004  EXPECT_NOT_POISONED((S8) e);
1005}
1006
1007TEST(MemorySanitizer, strtoll) {
1008  char *e;
1009  assert(1 == strtoll("1", &e, 10));
1010  EXPECT_NOT_POISONED((S8) e);
1011}
1012
1013TEST(MemorySanitizer, strtoul) {
1014  char *e;
1015  assert(1 == strtoul("1", &e, 10));
1016  EXPECT_NOT_POISONED((S8) e);
1017}
1018
1019TEST(MemorySanitizer, strtoull) {
1020  char *e;
1021  assert(1 == strtoull("1", &e, 10));
1022  EXPECT_NOT_POISONED((S8) e);
1023}
1024
1025TEST(MemorySanitizer, strtod) {
1026  char *e;
1027  assert(0 != strtod("1.5", &e));
1028  EXPECT_NOT_POISONED((S8) e);
1029}
1030
1031TEST(MemorySanitizer, strtof) {
1032  char *e;
1033  assert(0 != strtof("1.5", &e));
1034  EXPECT_NOT_POISONED((S8) e);
1035}
1036
1037TEST(MemorySanitizer, strtold) {
1038  char *e;
1039  assert(0 != strtold("1.5", &e));
1040  EXPECT_NOT_POISONED((S8) e);
1041}
1042
1043TEST(MemorySanitizer, modf) {
1044  double x, y;
1045  x = modf(2.1, &y);
1046  EXPECT_NOT_POISONED(y);
1047}
1048
1049TEST(MemorySanitizer, modff) {
1050  float x, y;
1051  x = modff(2.1, &y);
1052  EXPECT_NOT_POISONED(y);
1053}
1054
1055TEST(MemorySanitizer, modfl) {
1056  long double x, y;
1057  x = modfl(2.1, &y);
1058  EXPECT_NOT_POISONED(y);
1059}
1060
1061TEST(MemorySanitizer, sprintf) {  // NOLINT
1062  char buff[10];
1063  break_optimization(buff);
1064  EXPECT_POISONED(buff[0]);
1065  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1066  assert(res == 7);
1067  assert(buff[0] == '1');
1068  assert(buff[1] == '2');
1069  assert(buff[2] == '3');
1070  assert(buff[6] == '7');
1071  assert(buff[7] == 0);
1072  EXPECT_POISONED(buff[8]);
1073}
1074
1075TEST(MemorySanitizer, snprintf) {
1076  char buff[10];
1077  break_optimization(buff);
1078  EXPECT_POISONED(buff[0]);
1079  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1080  assert(res == 7);
1081  assert(buff[0] == '1');
1082  assert(buff[1] == '2');
1083  assert(buff[2] == '3');
1084  assert(buff[6] == '7');
1085  assert(buff[7] == 0);
1086  EXPECT_POISONED(buff[8]);
1087}
1088
1089TEST(MemorySanitizer, swprintf) {
1090  wchar_t buff[10];
1091  assert(sizeof(wchar_t) == 4);
1092  break_optimization(buff);
1093  EXPECT_POISONED(buff[0]);
1094  int res = swprintf(buff, 9, L"%d", 1234567);
1095  assert(res == 7);
1096  assert(buff[0] == '1');
1097  assert(buff[1] == '2');
1098  assert(buff[2] == '3');
1099  assert(buff[6] == '7');
1100  assert(buff[7] == 0);
1101  EXPECT_POISONED(buff[8]);
1102}
1103
1104TEST(MemorySanitizer, asprintf) {  // NOLINT
1105  char *pbuf;
1106  EXPECT_POISONED(pbuf);
1107  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1108  assert(res == 7);
1109  EXPECT_NOT_POISONED(pbuf);
1110  assert(pbuf[0] == '1');
1111  assert(pbuf[1] == '2');
1112  assert(pbuf[2] == '3');
1113  assert(pbuf[6] == '7');
1114  assert(pbuf[7] == 0);
1115  free(pbuf);
1116}
1117
1118TEST(MemorySanitizer, wcstombs) {
1119  const wchar_t *x = L"abc";
1120  char buff[10];
1121  int res = wcstombs(buff, x, 4);
1122  EXPECT_EQ(res, 3);
1123  EXPECT_EQ(buff[0], 'a');
1124  EXPECT_EQ(buff[1], 'b');
1125  EXPECT_EQ(buff[2], 'c');
1126}
1127
1128TEST(MemorySanitizer, gettimeofday) {
1129  struct timeval tv;
1130  struct timezone tz;
1131  break_optimization(&tv);
1132  break_optimization(&tz);
1133  assert(sizeof(tv) == 16);
1134  assert(sizeof(tz) == 8);
1135  EXPECT_POISONED(tv.tv_sec);
1136  EXPECT_POISONED(tv.tv_usec);
1137  EXPECT_POISONED(tz.tz_minuteswest);
1138  EXPECT_POISONED(tz.tz_dsttime);
1139  assert(0 == gettimeofday(&tv, &tz));
1140  EXPECT_NOT_POISONED(tv.tv_sec);
1141  EXPECT_NOT_POISONED(tv.tv_usec);
1142  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1143  EXPECT_NOT_POISONED(tz.tz_dsttime);
1144}
1145
1146TEST(MemorySanitizer, clock_gettime) {
1147  struct timespec tp;
1148  EXPECT_POISONED(tp.tv_sec);
1149  EXPECT_POISONED(tp.tv_nsec);
1150  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1151  EXPECT_NOT_POISONED(tp.tv_sec);
1152  EXPECT_NOT_POISONED(tp.tv_nsec);
1153}
1154
1155TEST(MemorySanitizer, clock_getres) {
1156  struct timespec tp;
1157  EXPECT_POISONED(tp.tv_sec);
1158  EXPECT_POISONED(tp.tv_nsec);
1159  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1160  EXPECT_POISONED(tp.tv_sec);
1161  EXPECT_POISONED(tp.tv_nsec);
1162  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1163  EXPECT_NOT_POISONED(tp.tv_sec);
1164  EXPECT_NOT_POISONED(tp.tv_nsec);
1165}
1166
1167TEST(MemorySanitizer, getitimer) {
1168  struct itimerval it1, it2;
1169  int res;
1170  EXPECT_POISONED(it1.it_interval.tv_sec);
1171  EXPECT_POISONED(it1.it_interval.tv_usec);
1172  EXPECT_POISONED(it1.it_value.tv_sec);
1173  EXPECT_POISONED(it1.it_value.tv_usec);
1174  res = getitimer(ITIMER_VIRTUAL, &it1);
1175  assert(!res);
1176  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1177  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1178  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1179  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1180
1181  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1182  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1183
1184  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1185  assert(!res);
1186  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1187  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1188  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1189  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1190
1191  // Check that old_value can be 0, and disable the timer.
1192  memset(&it1, 0, sizeof(it1));
1193  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1194  assert(!res);
1195}
1196
1197TEST(MemorySanitizer, time) {
1198  time_t t;
1199  EXPECT_POISONED(t);
1200  time_t t2 = time(&t);
1201  assert(t2 != (time_t)-1);
1202  EXPECT_NOT_POISONED(t);
1203}
1204
1205TEST(MemorySanitizer, localtime) {
1206  time_t t = 123;
1207  struct tm *time = localtime(&t);
1208  assert(time != 0);
1209  EXPECT_NOT_POISONED(time->tm_sec);
1210  EXPECT_NOT_POISONED(time->tm_hour);
1211  EXPECT_NOT_POISONED(time->tm_year);
1212  EXPECT_NOT_POISONED(time->tm_isdst);
1213}
1214
1215TEST(MemorySanitizer, localtime_r) {
1216  time_t t = 123;
1217  struct tm time;
1218  struct tm *res = localtime_r(&t, &time);
1219  assert(res != 0);
1220  EXPECT_NOT_POISONED(time.tm_sec);
1221  EXPECT_NOT_POISONED(time.tm_hour);
1222  EXPECT_NOT_POISONED(time.tm_year);
1223  EXPECT_NOT_POISONED(time.tm_isdst);
1224}
1225
1226TEST(MemorySanitizer, mmap) {
1227  const int size = 4096;
1228  void *p1, *p2;
1229  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1230  __msan_poison(p1, size);
1231  munmap(p1, size);
1232  for (int i = 0; i < 1000; i++) {
1233    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1234    if (p2 == p1)
1235      break;
1236    else
1237      munmap(p2, size);
1238  }
1239  if (p1 == p2) {
1240    EXPECT_NOT_POISONED(*(char*)p2);
1241    munmap(p2, size);
1242  }
1243}
1244
1245// FIXME: enable and add ecvt.
1246// FIXME: check why msandr does nt handle fcvt.
1247TEST(MemorySanitizer, fcvt) {
1248  int a, b;
1249  break_optimization(&a);
1250  break_optimization(&b);
1251  EXPECT_POISONED(a);
1252  EXPECT_POISONED(b);
1253  char *str = fcvt(12345.6789, 10, &a, &b);
1254  EXPECT_NOT_POISONED(a);
1255  EXPECT_NOT_POISONED(b);
1256}
1257
1258TEST(MemorySanitizer, frexp) {
1259  int x;
1260  x = *GetPoisoned<int>();
1261  double r = frexp(1.1, &x);
1262  EXPECT_NOT_POISONED(r);
1263  EXPECT_NOT_POISONED(x);
1264
1265  x = *GetPoisoned<int>();
1266  float rf = frexpf(1.1, &x);
1267  EXPECT_NOT_POISONED(rf);
1268  EXPECT_NOT_POISONED(x);
1269
1270  x = *GetPoisoned<int>();
1271  double rl = frexpl(1.1, &x);
1272  EXPECT_NOT_POISONED(rl);
1273  EXPECT_NOT_POISONED(x);
1274}
1275
1276namespace {
1277
1278static int cnt;
1279
1280void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1281  assert(signo == SIGPROF);
1282  assert(si);
1283  EXPECT_NOT_POISONED(si->si_errno);
1284  EXPECT_NOT_POISONED(si->si_pid);
1285#if __linux__
1286# if defined(__x86_64__)
1287  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1288# elif defined(__i386__)
1289  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1290# endif
1291#endif
1292  ++cnt;
1293}
1294
1295TEST(MemorySanitizer, sigaction) {
1296  struct sigaction act = {};
1297  struct sigaction oldact = {};
1298  struct sigaction origact = {};
1299
1300  sigaction(SIGPROF, 0, &origact);
1301
1302  act.sa_flags |= SA_SIGINFO;
1303  act.sa_sigaction = &SigactionHandler;
1304  sigaction(SIGPROF, &act, 0);
1305
1306  kill(getpid(), SIGPROF);
1307
1308  act.sa_flags &= ~SA_SIGINFO;
1309  act.sa_handler = SIG_DFL;
1310  sigaction(SIGPROF, &act, 0);
1311
1312  act.sa_flags &= ~SA_SIGINFO;
1313  act.sa_handler = SIG_IGN;
1314  sigaction(SIGPROF, &act, &oldact);
1315  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1316  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1317  kill(getpid(), SIGPROF);
1318
1319  act.sa_flags |= SA_SIGINFO;
1320  act.sa_sigaction = &SigactionHandler;
1321  sigaction(SIGPROF, &act, &oldact);
1322  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1323  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1324  kill(getpid(), SIGPROF);
1325
1326  act.sa_flags &= ~SA_SIGINFO;
1327  act.sa_handler = SIG_DFL;
1328  sigaction(SIGPROF, &act, &oldact);
1329  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1330  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1331  EXPECT_EQ(2, cnt);
1332
1333  sigaction(SIGPROF, &origact, 0);
1334}
1335
1336} // namespace
1337
1338struct StructWithDtor {
1339  ~StructWithDtor();
1340};
1341
1342NOINLINE StructWithDtor::~StructWithDtor() {
1343  break_optimization(0);
1344}
1345
1346TEST(MemorySanitizer, Invoke) {
1347  StructWithDtor s;  // Will cause the calls to become invokes.
1348  EXPECT_NOT_POISONED(0);
1349  EXPECT_POISONED(*GetPoisoned<int>());
1350  EXPECT_NOT_POISONED(0);
1351  EXPECT_POISONED(*GetPoisoned<int>());
1352  EXPECT_POISONED(ReturnPoisoned<S4>());
1353}
1354
1355TEST(MemorySanitizer, ptrtoint) {
1356  // Test that shadow is propagated through pointer-to-integer conversion.
1357  void* p = (void*)0xABCD;
1358  __msan_poison(((char*)&p) + 1, sizeof(p));
1359  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1360
1361  void* q = (void*)0xABCD;
1362  __msan_poison(&q, sizeof(q) - 1);
1363  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1364}
1365
1366static void vaargsfn2(int guard, ...) {
1367  va_list vl;
1368  va_start(vl, guard);
1369  EXPECT_NOT_POISONED(va_arg(vl, int));
1370  EXPECT_NOT_POISONED(va_arg(vl, int));
1371  EXPECT_NOT_POISONED(va_arg(vl, int));
1372  EXPECT_POISONED(va_arg(vl, double));
1373  va_end(vl);
1374}
1375
1376static void vaargsfn(int guard, ...) {
1377  va_list vl;
1378  va_start(vl, guard);
1379  EXPECT_NOT_POISONED(va_arg(vl, int));
1380  EXPECT_POISONED(va_arg(vl, int));
1381  // The following call will overwrite __msan_param_tls.
1382  // Checks after it test that arg shadow was somehow saved across the call.
1383  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1384  EXPECT_NOT_POISONED(va_arg(vl, int));
1385  EXPECT_POISONED(va_arg(vl, int));
1386  va_end(vl);
1387}
1388
1389TEST(MemorySanitizer, VAArgTest) {
1390  int* x = GetPoisoned<int>();
1391  int* y = GetPoisoned<int>(4);
1392  vaargsfn(1, 13, *x, 42, *y);
1393}
1394
1395static void vaargsfn_many(int guard, ...) {
1396  va_list vl;
1397  va_start(vl, guard);
1398  EXPECT_NOT_POISONED(va_arg(vl, int));
1399  EXPECT_POISONED(va_arg(vl, int));
1400  EXPECT_NOT_POISONED(va_arg(vl, int));
1401  EXPECT_NOT_POISONED(va_arg(vl, int));
1402  EXPECT_NOT_POISONED(va_arg(vl, int));
1403  EXPECT_NOT_POISONED(va_arg(vl, int));
1404  EXPECT_NOT_POISONED(va_arg(vl, int));
1405  EXPECT_NOT_POISONED(va_arg(vl, int));
1406  EXPECT_NOT_POISONED(va_arg(vl, int));
1407  EXPECT_POISONED(va_arg(vl, int));
1408  va_end(vl);
1409}
1410
1411TEST(MemorySanitizer, VAArgManyTest) {
1412  int* x = GetPoisoned<int>();
1413  int* y = GetPoisoned<int>(4);
1414  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1415}
1416
1417static void vaargsfn_pass2(va_list vl) {
1418  EXPECT_NOT_POISONED(va_arg(vl, int));
1419  EXPECT_NOT_POISONED(va_arg(vl, int));
1420  EXPECT_POISONED(va_arg(vl, int));
1421}
1422
1423static void vaargsfn_pass(int guard, ...) {
1424  va_list vl;
1425  va_start(vl, guard);
1426  EXPECT_POISONED(va_arg(vl, int));
1427  vaargsfn_pass2(vl);
1428  va_end(vl);
1429}
1430
1431TEST(MemorySanitizer, VAArgPass) {
1432  int* x = GetPoisoned<int>();
1433  int* y = GetPoisoned<int>(4);
1434  vaargsfn_pass(1, *x, 2, 3, *y);
1435}
1436
1437static void vaargsfn_copy2(va_list vl) {
1438  EXPECT_NOT_POISONED(va_arg(vl, int));
1439  EXPECT_POISONED(va_arg(vl, int));
1440}
1441
1442static void vaargsfn_copy(int guard, ...) {
1443  va_list vl;
1444  va_start(vl, guard);
1445  EXPECT_NOT_POISONED(va_arg(vl, int));
1446  EXPECT_POISONED(va_arg(vl, int));
1447  va_list vl2;
1448  va_copy(vl2, vl);
1449  vaargsfn_copy2(vl2);
1450  EXPECT_NOT_POISONED(va_arg(vl, int));
1451  EXPECT_POISONED(va_arg(vl, int));
1452  va_end(vl);
1453}
1454
1455TEST(MemorySanitizer, VAArgCopy) {
1456  int* x = GetPoisoned<int>();
1457  int* y = GetPoisoned<int>(4);
1458  vaargsfn_copy(1, 2, *x, 3, *y);
1459}
1460
1461static void vaargsfn_ptr(int guard, ...) {
1462  va_list vl;
1463  va_start(vl, guard);
1464  EXPECT_NOT_POISONED(va_arg(vl, int*));
1465  EXPECT_POISONED(va_arg(vl, int*));
1466  EXPECT_NOT_POISONED(va_arg(vl, int*));
1467  EXPECT_POISONED(va_arg(vl, double*));
1468  va_end(vl);
1469}
1470
1471TEST(MemorySanitizer, VAArgPtr) {
1472  int** x = GetPoisoned<int*>();
1473  double** y = GetPoisoned<double*>(8);
1474  int z;
1475  vaargsfn_ptr(1, &z, *x, &z, *y);
1476}
1477
1478static void vaargsfn_overflow(int guard, ...) {
1479  va_list vl;
1480  va_start(vl, guard);
1481  EXPECT_NOT_POISONED(va_arg(vl, int));
1482  EXPECT_NOT_POISONED(va_arg(vl, int));
1483  EXPECT_POISONED(va_arg(vl, int));
1484  EXPECT_NOT_POISONED(va_arg(vl, int));
1485  EXPECT_NOT_POISONED(va_arg(vl, int));
1486  EXPECT_NOT_POISONED(va_arg(vl, int));
1487
1488  EXPECT_NOT_POISONED(va_arg(vl, double));
1489  EXPECT_NOT_POISONED(va_arg(vl, double));
1490  EXPECT_NOT_POISONED(va_arg(vl, double));
1491  EXPECT_POISONED(va_arg(vl, double));
1492  EXPECT_NOT_POISONED(va_arg(vl, double));
1493  EXPECT_POISONED(va_arg(vl, int*));
1494  EXPECT_NOT_POISONED(va_arg(vl, double));
1495  EXPECT_NOT_POISONED(va_arg(vl, double));
1496
1497  EXPECT_POISONED(va_arg(vl, int));
1498  EXPECT_POISONED(va_arg(vl, double));
1499  EXPECT_POISONED(va_arg(vl, int*));
1500
1501  EXPECT_NOT_POISONED(va_arg(vl, int));
1502  EXPECT_NOT_POISONED(va_arg(vl, double));
1503  EXPECT_NOT_POISONED(va_arg(vl, int*));
1504
1505  EXPECT_POISONED(va_arg(vl, int));
1506  EXPECT_POISONED(va_arg(vl, double));
1507  EXPECT_POISONED(va_arg(vl, int*));
1508
1509  va_end(vl);
1510}
1511
1512TEST(MemorySanitizer, VAArgOverflow) {
1513  int* x = GetPoisoned<int>();
1514  double* y = GetPoisoned<double>(8);
1515  int** p = GetPoisoned<int*>(16);
1516  int z;
1517  vaargsfn_overflow(1,
1518      1, 2, *x, 4, 5, 6,
1519      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1520      // the following args will overflow for sure
1521      *x, *y, *p,
1522      7, 9.9, &z,
1523      *x, *y, *p);
1524}
1525
1526static void vaargsfn_tlsoverwrite2(int guard, ...) {
1527  va_list vl;
1528  va_start(vl, guard);
1529  EXPECT_NOT_POISONED(va_arg(vl, int));
1530  va_end(vl);
1531}
1532
1533static void vaargsfn_tlsoverwrite(int guard, ...) {
1534  // This call will overwrite TLS contents unless it's backed up somewhere.
1535  vaargsfn_tlsoverwrite2(2, 42);
1536  va_list vl;
1537  va_start(vl, guard);
1538  EXPECT_POISONED(va_arg(vl, int));
1539  va_end(vl);
1540}
1541
1542TEST(MemorySanitizer, VAArgTLSOverwrite) {
1543  int* x = GetPoisoned<int>();
1544  vaargsfn_tlsoverwrite(1, *x);
1545}
1546
1547struct StructByVal {
1548  int a, b, c, d, e, f;
1549};
1550
1551NOINLINE void StructByValTestFunc(struct StructByVal s) {
1552  EXPECT_NOT_POISONED(s.a);
1553  EXPECT_POISONED(s.b);
1554  EXPECT_NOT_POISONED(s.c);
1555  EXPECT_POISONED(s.d);
1556  EXPECT_NOT_POISONED(s.e);
1557  EXPECT_POISONED(s.f);
1558}
1559
1560NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1561  StructByValTestFunc(s);
1562}
1563
1564NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1565  StructByValTestFunc(s);
1566}
1567
1568TEST(MemorySanitizer, StructByVal) {
1569  // Large aggregates are passed as "byval" pointer argument in LLVM.
1570  struct StructByVal s;
1571  s.a = 1;
1572  s.b = *GetPoisoned<int>();
1573  s.c = 2;
1574  s.d = *GetPoisoned<int>();
1575  s.e = 3;
1576  s.f = *GetPoisoned<int>();
1577  StructByValTestFunc(s);
1578  StructByValTestFunc1(s);
1579  StructByValTestFunc2(0, s);
1580}
1581
1582
1583#if MSAN_HAS_M128
1584NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1585NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1586TEST(MemorySanitizer, m128) {
1587  __m128i a = _mm_set1_epi16(0x1234);
1588  __m128i b = _mm_set1_epi16(0x7890);
1589  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1590  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1591}
1592// FIXME: add more tests for __m128i.
1593#endif  // MSAN_HAS_M128
1594
1595// We should not complain when copying this poisoned hole.
1596struct StructWithHole {
1597  U4  a;
1598  // 4-byte hole.
1599  U8  b;
1600};
1601
1602NOINLINE StructWithHole ReturnStructWithHole() {
1603  StructWithHole res;
1604  __msan_poison(&res, sizeof(res));
1605  res.a = 1;
1606  res.b = 2;
1607  return res;
1608}
1609
1610TEST(MemorySanitizer, StructWithHole) {
1611  StructWithHole a = ReturnStructWithHole();
1612  break_optimization(&a);
1613}
1614
1615template <class T>
1616NOINLINE T ReturnStruct() {
1617  T res;
1618  __msan_poison(&res, sizeof(res));
1619  res.a = 1;
1620  return res;
1621}
1622
1623template <class T>
1624NOINLINE void TestReturnStruct() {
1625  T s1 = ReturnStruct<T>();
1626  EXPECT_NOT_POISONED(s1.a);
1627  EXPECT_POISONED(s1.b);
1628}
1629
1630struct SSS1 {
1631  int a, b, c;
1632};
1633struct SSS2 {
1634  int b, a, c;
1635};
1636struct SSS3 {
1637  int b, c, a;
1638};
1639struct SSS4 {
1640  int c, b, a;
1641};
1642
1643struct SSS5 {
1644  int a;
1645  float b;
1646};
1647struct SSS6 {
1648  int a;
1649  double b;
1650};
1651struct SSS7 {
1652  S8 b;
1653  int a;
1654};
1655struct SSS8 {
1656  S2 b;
1657  S8 a;
1658};
1659
1660TEST(MemorySanitizer, IntStruct3) {
1661  TestReturnStruct<SSS1>();
1662  TestReturnStruct<SSS2>();
1663  TestReturnStruct<SSS3>();
1664  TestReturnStruct<SSS4>();
1665  TestReturnStruct<SSS5>();
1666  TestReturnStruct<SSS6>();
1667  TestReturnStruct<SSS7>();
1668  TestReturnStruct<SSS8>();
1669}
1670
1671struct LongStruct {
1672  U1 a1, b1;
1673  U2 a2, b2;
1674  U4 a4, b4;
1675  U8 a8, b8;
1676};
1677
1678NOINLINE LongStruct ReturnLongStruct1() {
1679  LongStruct res;
1680  __msan_poison(&res, sizeof(res));
1681  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1682  // leaves b1, .., b8 poisoned.
1683  return res;
1684}
1685
1686NOINLINE LongStruct ReturnLongStruct2() {
1687  LongStruct res;
1688  __msan_poison(&res, sizeof(res));
1689  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1690  // leaves a1, .., a8 poisoned.
1691  return res;
1692}
1693
1694TEST(MemorySanitizer, LongStruct) {
1695  LongStruct s1 = ReturnLongStruct1();
1696  __msan_print_shadow(&s1, sizeof(s1));
1697  EXPECT_NOT_POISONED(s1.a1);
1698  EXPECT_NOT_POISONED(s1.a2);
1699  EXPECT_NOT_POISONED(s1.a4);
1700  EXPECT_NOT_POISONED(s1.a8);
1701
1702  EXPECT_POISONED(s1.b1);
1703  EXPECT_POISONED(s1.b2);
1704  EXPECT_POISONED(s1.b4);
1705  EXPECT_POISONED(s1.b8);
1706
1707  LongStruct s2 = ReturnLongStruct2();
1708  __msan_print_shadow(&s2, sizeof(s2));
1709  EXPECT_NOT_POISONED(s2.b1);
1710  EXPECT_NOT_POISONED(s2.b2);
1711  EXPECT_NOT_POISONED(s2.b4);
1712  EXPECT_NOT_POISONED(s2.b8);
1713
1714  EXPECT_POISONED(s2.a1);
1715  EXPECT_POISONED(s2.a2);
1716  EXPECT_POISONED(s2.a4);
1717  EXPECT_POISONED(s2.a8);
1718}
1719
1720TEST(MemorySanitizer, getrlimit) {
1721  struct rlimit limit;
1722  __msan_poison(&limit, sizeof(limit));
1723  int result = getrlimit(RLIMIT_DATA, &limit);
1724  assert(result == 0);
1725  EXPECT_NOT_POISONED(limit.rlim_cur);
1726  EXPECT_NOT_POISONED(limit.rlim_max);
1727}
1728
1729TEST(MemorySanitizer, getrusage) {
1730  struct rusage usage;
1731  __msan_poison(&usage, sizeof(usage));
1732  int result = getrusage(RUSAGE_SELF, &usage);
1733  assert(result == 0);
1734  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
1735  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
1736  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
1737  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
1738  EXPECT_NOT_POISONED(usage.ru_maxrss);
1739  EXPECT_NOT_POISONED(usage.ru_minflt);
1740  EXPECT_NOT_POISONED(usage.ru_majflt);
1741  EXPECT_NOT_POISONED(usage.ru_inblock);
1742  EXPECT_NOT_POISONED(usage.ru_oublock);
1743  EXPECT_NOT_POISONED(usage.ru_nvcsw);
1744  EXPECT_NOT_POISONED(usage.ru_nivcsw);
1745}
1746
1747#ifdef __GLIBC__
1748extern char *program_invocation_name;
1749#else  // __GLIBC__
1750# error "TODO: port this"
1751#endif
1752
1753// Compute the path to our loadable DSO.  We assume it's in the same
1754// directory.  Only use string routines that we intercept so far to do this.
1755static int PathToLoadable(char *buf, size_t sz) {
1756  const char *basename = "libmsan_loadable.x86_64.so";
1757  char *argv0 = program_invocation_name;
1758  char *last_slash = strrchr(argv0, '/');
1759  assert(last_slash);
1760  int res =
1761      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
1762  return res < sz ? 0 : res;
1763}
1764
1765static void dladdr_testfn() {}
1766
1767TEST(MemorySanitizer, dladdr) {
1768  Dl_info info;
1769  __msan_poison(&info, sizeof(info));
1770  int result = dladdr((const void*)dladdr_testfn, &info);
1771  assert(result != 0);
1772  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
1773  if (info.dli_fname)
1774    EXPECT_NOT_POISONED(strlen(info.dli_fname));
1775  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
1776  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
1777  if (info.dli_sname)
1778    EXPECT_NOT_POISONED(strlen(info.dli_sname));
1779  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
1780}
1781
1782static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
1783  (*(int *)data)++;
1784  EXPECT_NOT_POISONED(info->dlpi_addr);
1785  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
1786  EXPECT_NOT_POISONED(info->dlpi_phnum);
1787  for (int i = 0; i < info->dlpi_phnum; ++i)
1788    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
1789  return 0;
1790}
1791
1792TEST(MemorySanitizer, dl_iterate_phdr) {
1793  char path[4096];
1794  int res = PathToLoadable(path, sizeof(path));
1795  assert(!res);
1796
1797  // Having at least one dlopen'ed library in the process makes this more
1798  // entertaining.
1799  void *lib = dlopen(path, RTLD_LAZY);
1800  ASSERT_NE((void*)0, lib);
1801
1802  int count = 0;
1803  int result = dl_iterate_phdr(dl_phdr_callback, &count);
1804  assert(count > 0);
1805
1806  dlclose(lib);
1807}
1808
1809
1810TEST(MemorySanitizer, dlopen) {
1811  char path[4096];
1812  int res = PathToLoadable(path, sizeof(path));
1813  assert(!res);
1814
1815  // We need to clear shadow for globals when doing dlopen.  In order to test
1816  // this, we have to poison the shadow for the DSO before we load it.  In
1817  // general this is difficult, but the loader tends to reload things in the
1818  // same place, so we open, close, and then reopen.  The global should always
1819  // start out clean after dlopen.
1820  for (int i = 0; i < 2; i++) {
1821    void *lib = dlopen(path, RTLD_LAZY);
1822    if (lib == NULL) {
1823      printf("dlerror: %s\n", dlerror());
1824      assert(lib != NULL);
1825    }
1826    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
1827    assert(get_dso_global);
1828    void **dso_global = get_dso_global();
1829    EXPECT_NOT_POISONED(*dso_global);
1830    __msan_poison(dso_global, sizeof(*dso_global));
1831    EXPECT_POISONED(*dso_global);
1832    dlclose(lib);
1833  }
1834}
1835
1836// Regression test for a crash in dlopen() interceptor.
1837TEST(MemorySanitizer, dlopenFailed) {
1838  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
1839  void *lib = dlopen(path, RTLD_LAZY);
1840  ASSERT_EQ(0, lib);
1841}
1842
1843TEST(MemorySanitizer, scanf) {
1844  const char *input = "42 hello";
1845  int* d = new int;
1846  char* s = new char[7];
1847  int res = sscanf(input, "%d %5s", d, s);
1848  printf("res %d\n", res);
1849  assert(res == 2);
1850  EXPECT_NOT_POISONED(*d);
1851  EXPECT_NOT_POISONED(s[0]);
1852  EXPECT_NOT_POISONED(s[1]);
1853  EXPECT_NOT_POISONED(s[2]);
1854  EXPECT_NOT_POISONED(s[3]);
1855  EXPECT_NOT_POISONED(s[4]);
1856  EXPECT_NOT_POISONED(s[5]);
1857  EXPECT_POISONED(s[6]);
1858  delete s;
1859  delete d;
1860}
1861
1862static void *SimpleThread_threadfn(void* data) {
1863  return new int;
1864}
1865
1866TEST(MemorySanitizer, SimpleThread) {
1867  pthread_t t;
1868  void *p;
1869  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
1870  assert(!res);
1871  EXPECT_NOT_POISONED(t);
1872  res = pthread_join(t, &p);
1873  assert(!res);
1874  if (!__msan_has_dynamic_component())  // FIXME: intercept pthread_join (?).
1875    __msan_unpoison(&p, sizeof(p));
1876  delete (int*)p;
1877}
1878
1879static void *SmallStackThread_threadfn(void* data) {
1880  return 0;
1881}
1882
1883TEST(MemorySanitizer, SmallStackThread) {
1884  pthread_attr_t attr;
1885  pthread_t t;
1886  void *p;
1887  int res;
1888  res = pthread_attr_init(&attr);
1889  ASSERT_EQ(0, res);
1890  res = pthread_attr_setstacksize(&attr, 64 * 1024);
1891  ASSERT_EQ(0, res);
1892  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
1893  ASSERT_EQ(0, res);
1894  res = pthread_join(t, &p);
1895  ASSERT_EQ(0, res);
1896  res = pthread_attr_destroy(&attr);
1897  ASSERT_EQ(0, res);
1898}
1899
1900TEST(MemorySanitizer, PreAllocatedStackThread) {
1901  pthread_attr_t attr;
1902  pthread_t t;
1903  int res;
1904  res = pthread_attr_init(&attr);
1905  ASSERT_EQ(0, res);
1906  void *stack;
1907  const size_t kStackSize = 64 * 1024;
1908  res = posix_memalign(&stack, 4096, kStackSize);
1909  ASSERT_EQ(0, res);
1910  res = pthread_attr_setstack(&attr, stack, kStackSize);
1911  ASSERT_EQ(0, res);
1912  // A small self-allocated stack can not be extended by the tool.
1913  // In this case pthread_create is expected to fail.
1914  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
1915  EXPECT_NE(0, res);
1916  res = pthread_attr_destroy(&attr);
1917  ASSERT_EQ(0, res);
1918}
1919
1920TEST(MemorySanitizer, pthread_getschedparam) {
1921  int policy;
1922  struct sched_param param;
1923  int res = pthread_getschedparam(pthread_self(), &policy, &param);
1924  ASSERT_EQ(0, res);
1925  EXPECT_NOT_POISONED(policy);
1926  EXPECT_NOT_POISONED(param.sched_priority);
1927}
1928
1929TEST(MemorySanitizer, posix_memalign) {
1930  void *p;
1931  EXPECT_POISONED(p);
1932  int res = posix_memalign(&p, 4096, 13);
1933  ASSERT_EQ(0, res);
1934  EXPECT_NOT_POISONED(p);
1935  free(p);
1936}
1937
1938TEST(MemorySanitizer, inet_pton) {
1939  const char *s = "1:0:0:0:0:0:0:8";
1940  unsigned char buf[sizeof(struct in6_addr)];
1941  int res = inet_pton(AF_INET6, s, buf);
1942  ASSERT_EQ(1, res);
1943  EXPECT_NOT_POISONED(buf[0]);
1944  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
1945
1946  char s_out[INET6_ADDRSTRLEN];
1947  EXPECT_POISONED(s_out[3]);
1948  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
1949  ASSERT_NE((void*)0, q);
1950  EXPECT_NOT_POISONED(s_out[3]);
1951}
1952
1953TEST(MemorySanitizer, uname) {
1954  struct utsname u;
1955  int res = uname(&u);
1956  assert(!res);
1957  EXPECT_NOT_POISONED(strlen(u.sysname));
1958  EXPECT_NOT_POISONED(strlen(u.nodename));
1959  EXPECT_NOT_POISONED(strlen(u.release));
1960  EXPECT_NOT_POISONED(strlen(u.version));
1961  EXPECT_NOT_POISONED(strlen(u.machine));
1962}
1963
1964TEST(MemorySanitizer, gethostname) {
1965  char buf[100];
1966  int res = gethostname(buf, 100);
1967  assert(!res);
1968  EXPECT_NOT_POISONED(strlen(buf));
1969}
1970
1971TEST(MemorySanitizer, getpwuid) {
1972  struct passwd *p = getpwuid(0); // root
1973  assert(p);
1974  EXPECT_NOT_POISONED(p->pw_name);
1975  assert(p->pw_name);
1976  EXPECT_NOT_POISONED(p->pw_name[0]);
1977  EXPECT_NOT_POISONED(p->pw_uid);
1978  assert(p->pw_uid == 0);
1979}
1980
1981TEST(MemorySanitizer, getpwnam_r) {
1982  struct passwd pwd;
1983  struct passwd *pwdres;
1984  char buf[10000];
1985  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
1986  assert(!res);
1987  EXPECT_NOT_POISONED(pwd.pw_name);
1988  assert(pwd.pw_name);
1989  EXPECT_NOT_POISONED(pwd.pw_name[0]);
1990  EXPECT_NOT_POISONED(pwd.pw_uid);
1991  assert(pwd.pw_uid == 0);
1992}
1993
1994TEST(MemorySanitizer, getpwnam_r_positive) {
1995  struct passwd pwd;
1996  struct passwd *pwdres;
1997  char s[5];
1998  strncpy(s, "abcd", 5);
1999  __msan_poison(s, 5);
2000  char buf[10000];
2001  int res;
2002  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2003}
2004
2005TEST(MemorySanitizer, getgrnam_r) {
2006  struct group grp;
2007  struct group *grpres;
2008  char buf[10000];
2009  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2010  assert(!res);
2011  EXPECT_NOT_POISONED(grp.gr_name);
2012  assert(grp.gr_name);
2013  EXPECT_NOT_POISONED(grp.gr_name[0]);
2014  EXPECT_NOT_POISONED(grp.gr_gid);
2015}
2016
2017template<class T>
2018static bool applySlt(T value, T shadow) {
2019  __msan_partial_poison(&value, &shadow, sizeof(T));
2020  volatile bool zzz = true;
2021  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2022  // a shift-and-trunc to get at the highest bit.
2023  volatile bool v = value < 0 || zzz;
2024  return v;
2025}
2026
2027TEST(MemorySanitizer, SignedCompareWithZero) {
2028  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2029  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2030  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2031  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2032  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2033  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2034}
2035
2036template <class T, class S>
2037static T poisoned(T Va, S Sa) {
2038  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2039  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2040  T a;
2041  a = Va;
2042  __msan_partial_poison(&a, &Sa, sizeof(T));
2043  return a;
2044}
2045
2046TEST(MemorySanitizer, ICmpRelational) {
2047  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2048  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2049  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2050  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2051  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2052  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2053                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2054  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2055                  poisoned(-1, 0xFFFFFFFFU));
2056
2057  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2058  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2059  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2060  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2061  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2062  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2063                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2064  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2065                  poisoned(-1, 0xFFFFFFFFU));
2066
2067  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2068  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2069  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2070  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2071  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2072  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2073                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2074  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2075                  poisoned(-1, 0xFFFFFFFFU));
2076
2077  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2078  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2079  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2080  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2081  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2082  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2083                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2084  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2085                  poisoned(-1, 0xFFFFFFFFU));
2086
2087  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2088  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2089
2090  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2091}
2092
2093#if MSAN_HAS_M128
2094TEST(MemorySanitizer, ICmpVectorRelational) {
2095  EXPECT_NOT_POISONED(
2096      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2097                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2098  EXPECT_NOT_POISONED(
2099      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2100                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2101  EXPECT_POISONED(
2102      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2103                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2104  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2105                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2106}
2107#endif
2108
2109// Volatile bitfield store is implemented as load-mask-store
2110// Test that we don't warn on the store of (uninitialized) padding.
2111struct VolatileBitfieldStruct {
2112  volatile unsigned x : 1;
2113  unsigned y : 1;
2114};
2115
2116TEST(MemorySanitizer, VolatileBitfield) {
2117  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2118  S->x = 1;
2119  EXPECT_NOT_POISONED((unsigned)S->x);
2120  EXPECT_POISONED((unsigned)S->y);
2121}
2122
2123TEST(MemorySanitizer, UnalignedLoad) {
2124  char x[32];
2125  memset(x + 8, 0, 16);
2126  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2127  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2128  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2129  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2130  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2131  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2132  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2133
2134  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2135  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2136  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2137  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2138  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2139  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2140  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2141
2142  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2143  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2144  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2145  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2146  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2147  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2148  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2149  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2150  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2151}
2152
2153TEST(MemorySanitizer, UnalignedStore16) {
2154  char x[5];
2155  U2 y = 0;
2156  __msan_poison(&y, 1);
2157  __sanitizer_unaligned_store16(x + 1, y);
2158  EXPECT_POISONED(x[0]);
2159  EXPECT_POISONED(x[1]);
2160  EXPECT_NOT_POISONED(x[2]);
2161  EXPECT_POISONED(x[3]);
2162  EXPECT_POISONED(x[4]);
2163}
2164
2165TEST(MemorySanitizer, UnalignedStore32) {
2166  char x[8];
2167  U4 y4 = 0;
2168  __msan_poison(&y4, 2);
2169  __sanitizer_unaligned_store32(x+3, y4);
2170  EXPECT_POISONED(x[0]);
2171  EXPECT_POISONED(x[1]);
2172  EXPECT_POISONED(x[2]);
2173  EXPECT_POISONED(x[3]);
2174  EXPECT_POISONED(x[4]);
2175  EXPECT_NOT_POISONED(x[5]);
2176  EXPECT_NOT_POISONED(x[6]);
2177  EXPECT_POISONED(x[7]);
2178}
2179
2180TEST(MemorySanitizer, UnalignedStore64) {
2181  char x[16];
2182  U8 y = 0;
2183  __msan_poison(&y, 3);
2184  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2185  __sanitizer_unaligned_store64(x+3, y);
2186  EXPECT_POISONED(x[0]);
2187  EXPECT_POISONED(x[1]);
2188  EXPECT_POISONED(x[2]);
2189  EXPECT_POISONED(x[3]);
2190  EXPECT_POISONED(x[4]);
2191  EXPECT_POISONED(x[5]);
2192  EXPECT_NOT_POISONED(x[6]);
2193  EXPECT_NOT_POISONED(x[7]);
2194  EXPECT_NOT_POISONED(x[8]);
2195  EXPECT_POISONED(x[9]);
2196  EXPECT_NOT_POISONED(x[10]);
2197  EXPECT_POISONED(x[11]);
2198}
2199
2200TEST(MemorySanitizerDr, StoreInDSOTest) {
2201  if (!__msan_has_dynamic_component()) return;
2202  char* s = new char[10];
2203  dso_memfill(s, 9);
2204  EXPECT_NOT_POISONED(s[5]);
2205  EXPECT_POISONED(s[9]);
2206}
2207
2208int return_poisoned_int() {
2209  return ReturnPoisoned<U8>();
2210}
2211
2212TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2213  if (!__msan_has_dynamic_component()) return;
2214  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2215}
2216
2217NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2218  EXPECT_POISONED(x);
2219  EXPECT_POISONED(y);
2220  EXPECT_POISONED(z);
2221  return 0;
2222}
2223
2224static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2225  EXPECT_NOT_POISONED(x);
2226  EXPECT_NOT_POISONED(y);
2227  EXPECT_NOT_POISONED(z);
2228  return 0;
2229}
2230
2231TEST(MemorySanitizerDr, CallFromDSOTest) {
2232  if (!__msan_has_dynamic_component()) return;
2233  S8* x = GetPoisoned<S8>();
2234  S8* y = GetPoisoned<S8>();
2235  S8* z = GetPoisoned<S8>();
2236  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2237  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2238}
2239
2240static void StackStoreInDSOFn(int* x, int* y) {
2241  EXPECT_NOT_POISONED(*x);
2242  EXPECT_NOT_POISONED(*y);
2243}
2244
2245TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2246  if (!__msan_has_dynamic_component()) return;
2247  dso_stack_store(StackStoreInDSOFn, 1);
2248}
2249
2250TEST(MemorySanitizerOrigins, SetGet) {
2251  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2252  if (!TrackingOrigins()) return;
2253  int x;
2254  __msan_set_origin(&x, sizeof(x), 1234);
2255  EXPECT_EQ(1234, __msan_get_origin(&x));
2256  __msan_set_origin(&x, sizeof(x), 5678);
2257  EXPECT_EQ(5678, __msan_get_origin(&x));
2258  __msan_set_origin(&x, sizeof(x), 0);
2259  EXPECT_EQ(0, __msan_get_origin(&x));
2260}
2261
2262namespace {
2263struct S {
2264  U4 dummy;
2265  U2 a;
2266  U2 b;
2267};
2268
2269// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2270TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2271  if (!TrackingOrigins()) return;
2272
2273  S s;
2274  U4 origin = rand();  // NOLINT
2275  s.a = *GetPoisonedO<U2>(0, origin);
2276  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2277  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2278
2279  s.b = 42;
2280  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2281  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2282}
2283}  // namespace
2284
2285template<class T, class BinaryOp>
2286INLINE
2287void BinaryOpOriginTest(BinaryOp op) {
2288  U4 ox = rand();  //NOLINT
2289  U4 oy = rand();  //NOLINT
2290  T *x = GetPoisonedO<T>(0, ox, 0);
2291  T *y = GetPoisonedO<T>(1, oy, 0);
2292  T *z = GetPoisonedO<T>(2, 0, 0);
2293
2294  *z = op(*x, *y);
2295  U4 origin = __msan_get_origin(z);
2296  EXPECT_POISONED_O(*z, origin);
2297  EXPECT_EQ(true, origin == ox || origin == oy);
2298
2299  // y is poisoned, x is not.
2300  *x = 10101;
2301  *y = *GetPoisonedO<T>(1, oy);
2302  break_optimization(x);
2303  __msan_set_origin(z, sizeof(*z), 0);
2304  *z = op(*x, *y);
2305  EXPECT_POISONED_O(*z, oy);
2306  EXPECT_EQ(__msan_get_origin(z), oy);
2307
2308  // x is poisoned, y is not.
2309  *x = *GetPoisonedO<T>(0, ox);
2310  *y = 10101010;
2311  break_optimization(y);
2312  __msan_set_origin(z, sizeof(*z), 0);
2313  *z = op(*x, *y);
2314  EXPECT_POISONED_O(*z, ox);
2315  EXPECT_EQ(__msan_get_origin(z), ox);
2316}
2317
2318template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2319template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2320template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2321template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2322template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2323template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2324
2325TEST(MemorySanitizerOrigins, BinaryOp) {
2326  if (!TrackingOrigins()) return;
2327  BinaryOpOriginTest<S8>(XOR<S8>);
2328  BinaryOpOriginTest<U8>(ADD<U8>);
2329  BinaryOpOriginTest<S4>(SUB<S4>);
2330  BinaryOpOriginTest<S4>(MUL<S4>);
2331  BinaryOpOriginTest<U4>(OR<U4>);
2332  BinaryOpOriginTest<U4>(AND<U4>);
2333  BinaryOpOriginTest<double>(ADD<U4>);
2334  BinaryOpOriginTest<float>(ADD<S4>);
2335  BinaryOpOriginTest<double>(ADD<double>);
2336  BinaryOpOriginTest<float>(ADD<double>);
2337}
2338
2339TEST(MemorySanitizerOrigins, Unary) {
2340  if (!TrackingOrigins()) return;
2341  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2342  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2343  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2344  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2345
2346  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2347  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2348  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2349  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2350
2351  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2352  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2353  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2354  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2355
2356  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2357  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2358  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2359  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2360
2361  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2362  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2363}
2364
2365TEST(MemorySanitizerOrigins, EQ) {
2366  if (!TrackingOrigins()) return;
2367  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2368  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2369  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2370}
2371
2372TEST(MemorySanitizerOrigins, DIV) {
2373  if (!TrackingOrigins()) return;
2374  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2375  unsigned o = __LINE__;
2376  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2377}
2378
2379TEST(MemorySanitizerOrigins, SHIFT) {
2380  if (!TrackingOrigins()) return;
2381  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2382  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2383  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2384  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2385  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2386  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2387}
2388
2389template<class T, int N>
2390void MemCpyTest() {
2391  int ox = __LINE__;
2392  T *x = new T[N];
2393  T *y = new T[N];
2394  T *z = new T[N];
2395  __msan_poison(x, N * sizeof(T));
2396  __msan_set_origin(x, N * sizeof(T), ox);
2397  __msan_set_origin(y, N * sizeof(T), 777777);
2398  __msan_set_origin(z, N * sizeof(T), 888888);
2399  EXPECT_NOT_POISONED(x);
2400  memcpy(y, x, N * sizeof(T));
2401  EXPECT_POISONED_O(y[0], ox);
2402  EXPECT_POISONED_O(y[N/2], ox);
2403  EXPECT_POISONED_O(y[N-1], ox);
2404  EXPECT_NOT_POISONED(x);
2405  memmove(z, x, N * sizeof(T));
2406  EXPECT_POISONED_O(z[0], ox);
2407  EXPECT_POISONED_O(z[N/2], ox);
2408  EXPECT_POISONED_O(z[N-1], ox);
2409}
2410
2411TEST(MemorySanitizerOrigins, LargeMemCpy) {
2412  if (!TrackingOrigins()) return;
2413  MemCpyTest<U1, 10000>();
2414  MemCpyTest<U8, 10000>();
2415}
2416
2417TEST(MemorySanitizerOrigins, SmallMemCpy) {
2418  if (!TrackingOrigins()) return;
2419  MemCpyTest<U8, 1>();
2420  MemCpyTest<U8, 2>();
2421  MemCpyTest<U8, 3>();
2422}
2423
2424TEST(MemorySanitizerOrigins, Select) {
2425  if (!TrackingOrigins()) return;
2426  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2427  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2428  S4 x;
2429  break_optimization(&x);
2430  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2431
2432  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2433  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2434}
2435
2436extern "C"
2437NOINLINE char AllocaTO() {
2438  int ar[100];
2439  break_optimization(ar);
2440  return ar[10];
2441  // fprintf(stderr, "Descr: %s\n",
2442  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2443}
2444
2445TEST(MemorySanitizerOrigins, Alloca) {
2446  if (!TrackingOrigins()) return;
2447  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2448  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2449  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2450  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2451}
2452
2453// FIXME: replace with a lit-like test.
2454TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2455  if (!TrackingOrigins()) return;
2456  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2457}
2458
2459NOINLINE int RetvalOriginTest(U4 origin) {
2460  int *a = new int;
2461  break_optimization(a);
2462  __msan_set_origin(a, sizeof(*a), origin);
2463  int res = *a;
2464  delete a;
2465  return res;
2466}
2467
2468TEST(MemorySanitizerOrigins, Retval) {
2469  if (!TrackingOrigins()) return;
2470  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2471}
2472
2473NOINLINE void ParamOriginTest(int param, U4 origin) {
2474  EXPECT_POISONED_O(param, origin);
2475}
2476
2477TEST(MemorySanitizerOrigins, Param) {
2478  if (!TrackingOrigins()) return;
2479  int *a = new int;
2480  U4 origin = __LINE__;
2481  break_optimization(a);
2482  __msan_set_origin(a, sizeof(*a), origin);
2483  ParamOriginTest(*a, origin);
2484  delete a;
2485}
2486
2487TEST(MemorySanitizerOrigins, Invoke) {
2488  if (!TrackingOrigins()) return;
2489  StructWithDtor s;  // Will cause the calls to become invokes.
2490  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2491}
2492
2493TEST(MemorySanitizerOrigins, strlen) {
2494  S8 alignment;
2495  break_optimization(&alignment);
2496  char x[4] = {'a', 'b', 0, 0};
2497  __msan_poison(&x[2], 1);
2498  U4 origin = __LINE__;
2499  __msan_set_origin(x, sizeof(x), origin);
2500  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2501}
2502
2503TEST(MemorySanitizerOrigins, wcslen) {
2504  wchar_t w[3] = {'a', 'b', 0};
2505  U4 origin = __LINE__;
2506  __msan_set_origin(w, sizeof(w), origin);
2507  __msan_poison(&w[2], sizeof(wchar_t));
2508  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2509}
2510
2511#if MSAN_HAS_M128
2512TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2513  __m128 x, y;
2514  U4 origin = __LINE__;
2515  __msan_set_origin(&x, sizeof(x), origin);
2516  __msan_poison(&x, sizeof(x));
2517  __builtin_ia32_storeups((float*)&y, x);
2518  EXPECT_POISONED_O(y, origin);
2519}
2520#endif
2521
2522NOINLINE void RecursiveMalloc(int depth) {
2523  static int count;
2524  count++;
2525  if ((count % (1024 * 1024)) == 0)
2526    printf("RecursiveMalloc: %d\n", count);
2527  int *x1 = new int;
2528  int *x2 = new int;
2529  break_optimization(x1);
2530  break_optimization(x2);
2531  if (depth > 0) {
2532    RecursiveMalloc(depth-1);
2533    RecursiveMalloc(depth-1);
2534  }
2535  delete x1;
2536  delete x2;
2537}
2538
2539TEST(MemorySanitizer, CallocOverflow) {
2540  size_t kArraySize = 4096;
2541  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2542  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2543  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2544  EXPECT_EQ(0L, Ident(p));
2545}
2546
2547TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2548  RecursiveMalloc(22);
2549}
2550