msan_test.cc revision 263800ba59720f9be69735b4dad625fca92430bc 
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/sysinfo.h>
42#include <sys/utsname.h>
43#include <sys/mman.h>
44#include <sys/vfs.h>
45#include <dirent.h>
46#include <pwd.h>
47#include <sys/socket.h>
48#include <netdb.h>
49
50#if defined(__i386__) || defined(__x86_64__)
51# include <emmintrin.h>
52# define MSAN_HAS_M128 1
53#else
54# define MSAN_HAS_M128 0
55#endif
56
57typedef unsigned char      U1;
58typedef unsigned short     U2;  // NOLINT
59typedef unsigned int       U4;
60typedef unsigned long long U8;  // NOLINT
61typedef   signed char      S1;
62typedef   signed short     S2;  // NOLINT
63typedef   signed int       S4;
64typedef   signed long long S8;  // NOLINT
65#define NOINLINE      __attribute__((noinline))
66#define INLINE      __attribute__((always_inline))
67
68static bool TrackingOrigins() {
69  S8 x;
70  __msan_set_origin(&x, sizeof(x), 0x1234);
71  U4 origin = __msan_get_origin(&x);
72  __msan_set_origin(&x, sizeof(x), 0);
73  return origin == 0x1234;
74}
75
76#define EXPECT_UMR(action) \
77    do {                        \
78      __msan_set_expect_umr(1); \
79      action;                   \
80      __msan_set_expect_umr(0); \
81    } while (0)
82
83#define EXPECT_UMR_O(action, origin) \
84    do {                                            \
85      __msan_set_expect_umr(1);                     \
86      action;                                       \
87      __msan_set_expect_umr(0);                     \
88      if (TrackingOrigins())                        \
89        EXPECT_EQ(origin, __msan_get_umr_origin()); \
90    } while (0)
91
92#define EXPECT_UMR_S(action, stack_origin) \
93    do {                                            \
94      __msan_set_expect_umr(1);                     \
95      action;                                       \
96      __msan_set_expect_umr(0);                     \
97      U4 id = __msan_get_umr_origin();             \
98      const char *str = __msan_get_origin_descr_if_stack(id); \
99      if (!str || strcmp(str, stack_origin)) {      \
100        fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \
101                id, stack_origin, str);  \
102        EXPECT_EQ(1, 0);                            \
103      }                                             \
104    } while (0)
105
106#define EXPECT_POISONED(x) ExpectPoisoned(x)
107
108template<typename T>
109void ExpectPoisoned(const T& t) {
110  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
111}
112
113#define EXPECT_POISONED_O(x, origin) \
114  ExpectPoisonedWithOrigin(x, origin)
115
116template<typename T>
117void ExpectPoisonedWithOrigin(const T& t, unsigned origin) {
118  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
119  if (TrackingOrigins())
120    EXPECT_EQ(origin, __msan_get_origin((void*)&t));
121}
122
123#define EXPECT_POISONED_S(x, stack_origin) \
124  ExpectPoisonedWithStackOrigin(x, stack_origin)
125
126template<typename T>
127void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) {
128  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
129  U4 id = __msan_get_origin((void*)&t);
130  const char *str = __msan_get_origin_descr_if_stack(id);
131  if (!str || strcmp(str, stack_origin)) {
132    fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s",
133        id, stack_origin, str);
134    EXPECT_EQ(1, 0);
135  }
136}
137
138#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x)
139
140template<typename T>
141void ExpectNotPoisoned(const T& t) {
142  EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t)));
143}
144
145static U8 poisoned_array[100];
146template<class T>
147T *GetPoisoned(int i = 0, T val = 0) {
148  T *res = (T*)&poisoned_array[i];
149  *res = val;
150  __msan_poison(&poisoned_array[i], sizeof(T));
151  return res;
152}
153
154template<class T>
155T *GetPoisonedO(int i, U4 origin, T val = 0) {
156  T *res = (T*)&poisoned_array[i];
157  *res = val;
158  __msan_poison(&poisoned_array[i], sizeof(T));
159  __msan_set_origin(&poisoned_array[i], sizeof(T), origin);
160  return res;
161}
162
163// This function returns its parameter but in such a way that compiler
164// can not prove it.
165template<class T>
166NOINLINE
167static T Ident(T t) {
168  volatile T ret = t;
169  return ret;
170}
171
172template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); }
173
174static volatile int g_one = 1;
175static volatile int g_zero = 0;
176static volatile int g_0 = 0;
177static volatile int g_1 = 1;
178
179S4 a_s4[100];
180S8 a_s8[100];
181
182// Check that malloc poisons memory.
183// A lot of tests below depend on this.
184TEST(MemorySanitizerSanity, PoisonInMalloc) {
185  int *x = (int*)malloc(sizeof(int));
186  EXPECT_POISONED(*x);
187  free(x);
188}
189
190TEST(MemorySanitizer, NegativeTest1) {
191  S4 *x = GetPoisoned<S4>();
192  if (g_one)
193    *x = 0;
194  EXPECT_NOT_POISONED(*x);
195}
196
197TEST(MemorySanitizer, PositiveTest1) {
198  // Load to store.
199  EXPECT_POISONED(*GetPoisoned<S1>());
200  EXPECT_POISONED(*GetPoisoned<S2>());
201  EXPECT_POISONED(*GetPoisoned<S4>());
202  EXPECT_POISONED(*GetPoisoned<S8>());
203
204  // S->S conversions.
205  EXPECT_POISONED(*GetPoisoned<S1>());
206  EXPECT_POISONED(*GetPoisoned<S1>());
207  EXPECT_POISONED(*GetPoisoned<S1>());
208
209  EXPECT_POISONED(*GetPoisoned<S2>());
210  EXPECT_POISONED(*GetPoisoned<S2>());
211  EXPECT_POISONED(*GetPoisoned<S2>());
212
213  EXPECT_POISONED(*GetPoisoned<S4>());
214  EXPECT_POISONED(*GetPoisoned<S4>());
215  EXPECT_POISONED(*GetPoisoned<S4>());
216
217  EXPECT_POISONED(*GetPoisoned<S8>());
218  EXPECT_POISONED(*GetPoisoned<S8>());
219  EXPECT_POISONED(*GetPoisoned<S8>());
220
221  // ZExt
222  EXPECT_POISONED(*GetPoisoned<U1>());
223  EXPECT_POISONED(*GetPoisoned<U1>());
224  EXPECT_POISONED(*GetPoisoned<U1>());
225  EXPECT_POISONED(*GetPoisoned<U2>());
226  EXPECT_POISONED(*GetPoisoned<U2>());
227  EXPECT_POISONED(*GetPoisoned<U4>());
228
229  // Unary ops.
230  EXPECT_POISONED(- *GetPoisoned<S4>());
231
232  EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1));
233
234
235  a_s4[g_zero] = 1 - *GetPoisoned<S4>();
236  a_s4[g_zero] = 1 + *GetPoisoned<S4>();
237}
238
239TEST(MemorySanitizer, Phi1) {
240  S4 c;
241  if (g_one) {
242    c = *GetPoisoned<S4>();
243  } else {
244    break_optimization(0);
245    c = 0;
246  }
247  EXPECT_POISONED(c);
248}
249
250TEST(MemorySanitizer, Phi2) {
251  S4 i = *GetPoisoned<S4>();
252  S4 n = g_one;
253  EXPECT_UMR(for (; i < g_one; i++););
254  EXPECT_POISONED(i);
255}
256
257NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); }
258NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); }
259NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); }
260
261TEST(MemorySanitizer, ArgTest) {
262  Arg1ExpectUMR(*GetPoisoned<S4>());
263  Arg2ExpectUMR(0, *GetPoisoned<S4>());
264  Arg3ExpectUMR(0, 1, *GetPoisoned<S8>());
265}
266
267
268TEST(MemorySanitizer, CallAndRet) {
269  if (!__msan_has_dynamic_component()) return;
270  ReturnPoisoned<S1>();
271  ReturnPoisoned<S2>();
272  ReturnPoisoned<S4>();
273  ReturnPoisoned<S8>();
274
275  EXPECT_POISONED(ReturnPoisoned<S1>());
276  EXPECT_POISONED(ReturnPoisoned<S2>());
277  EXPECT_POISONED(ReturnPoisoned<S4>());
278  EXPECT_POISONED(ReturnPoisoned<S8>());
279}
280
281// malloc() in the following test may be optimized to produce a compile-time
282// undef value. Check that we trap on the volatile assignment anyway.
283TEST(MemorySanitizer, DISABLED_MallocNoIdent) {
284  S4 *x = (int*)malloc(sizeof(S4));
285  EXPECT_POISONED(*x);
286  free(x);
287}
288
289TEST(MemorySanitizer, Malloc) {
290  S4 *x = (int*)Ident(malloc(sizeof(S4)));
291  EXPECT_POISONED(*x);
292  free(x);
293}
294
295TEST(MemorySanitizer, Realloc) {
296  S4 *x = (int*)Ident(realloc(0, sizeof(S4)));
297  EXPECT_POISONED(x[0]);
298  x[0] = 1;
299  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
300  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
301  EXPECT_POISONED(x[1]);
302  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
303  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
304  EXPECT_POISONED(x[2]);
305  EXPECT_POISONED(x[1]);
306  x[2] = 1;  // Init this here. Check that after realloc it is poisoned again.
307  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
308  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
309  EXPECT_POISONED(x[1]);
310  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
311  EXPECT_POISONED(x[1]);
312  EXPECT_POISONED(x[2]);
313  free(x);
314}
315
316TEST(MemorySanitizer, Calloc) {
317  S4 *x = (int*)Ident(calloc(1, sizeof(S4)));
318  EXPECT_NOT_POISONED(*x);  // Should not be poisoned.
319  // EXPECT_EQ(0, *x);
320  free(x);
321}
322
323TEST(MemorySanitizer, AndOr) {
324  U4 *p = GetPoisoned<U4>();
325  // We poison two bytes in the midle of a 4-byte word to make the test
326  // correct regardless of endianness.
327  ((U1*)p)[1] = 0;
328  ((U1*)p)[2] = 0xff;
329  EXPECT_NOT_POISONED(*p & 0x00ffff00);
330  EXPECT_NOT_POISONED(*p & 0x00ff0000);
331  EXPECT_NOT_POISONED(*p & 0x0000ff00);
332  EXPECT_POISONED(*p & 0xff000000);
333  EXPECT_POISONED(*p & 0x000000ff);
334  EXPECT_POISONED(*p & 0x0000ffff);
335  EXPECT_POISONED(*p & 0xffff0000);
336
337  EXPECT_NOT_POISONED(*p | 0xff0000ff);
338  EXPECT_NOT_POISONED(*p | 0xff00ffff);
339  EXPECT_NOT_POISONED(*p | 0xffff00ff);
340  EXPECT_POISONED(*p | 0xff000000);
341  EXPECT_POISONED(*p | 0x000000ff);
342  EXPECT_POISONED(*p | 0x0000ffff);
343  EXPECT_POISONED(*p | 0xffff0000);
344
345  EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>());
346}
347
348template<class T>
349static bool applyNot(T value, T shadow) {
350  __msan_partial_poison(&value, &shadow, sizeof(T));
351  return !value;
352}
353
354TEST(MemorySanitizer, Not) {
355  EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0));
356  EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0));
357  EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF));
358  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF));
359  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF));
360  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF));
361  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000));
362  EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000));
363  EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000));
364  EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000));
365
366  EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0));
367  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE));
368  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0));
369  EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF));
370
371  EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1)));
372  EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2)));
373}
374
375TEST(MemorySanitizer, Shift) {
376  U4 *up = GetPoisoned<U4>();
377  ((U1*)up)[0] = 0;
378  ((U1*)up)[3] = 0xff;
379  EXPECT_NOT_POISONED(*up >> 30);
380  EXPECT_NOT_POISONED(*up >> 24);
381  EXPECT_POISONED(*up >> 23);
382  EXPECT_POISONED(*up >> 10);
383
384  EXPECT_NOT_POISONED(*up << 30);
385  EXPECT_NOT_POISONED(*up << 24);
386  EXPECT_POISONED(*up << 23);
387  EXPECT_POISONED(*up << 10);
388
389  S4 *sp = (S4*)up;
390  EXPECT_NOT_POISONED(*sp >> 30);
391  EXPECT_NOT_POISONED(*sp >> 24);
392  EXPECT_POISONED(*sp >> 23);
393  EXPECT_POISONED(*sp >> 10);
394
395  sp = GetPoisoned<S4>();
396  ((S1*)sp)[1] = 0;
397  ((S1*)sp)[2] = 0;
398  EXPECT_POISONED(*sp >> 31);
399
400  EXPECT_POISONED(100 >> *GetPoisoned<S4>());
401  EXPECT_POISONED(100U >> *GetPoisoned<S4>());
402}
403
404NOINLINE static int GetPoisonedZero() {
405  int *zero = new int;
406  *zero = 0;
407  __msan_poison(zero, sizeof(*zero));
408  int res = *zero;
409  delete zero;
410  return res;
411}
412
413TEST(MemorySanitizer, LoadFromDirtyAddress) {
414  int *a = new int;
415  *a = 0;
416  EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()]));
417  delete a;
418}
419
420TEST(MemorySanitizer, StoreToDirtyAddress) {
421  int *a = new int;
422  EXPECT_UMR(a[GetPoisonedZero()] = 0);
423  break_optimization(a);
424  delete a;
425}
426
427
428NOINLINE void StackTestFunc() {
429  S4 p4;
430  S4 ok4 = 1;
431  S2 p2;
432  S2 ok2 = 1;
433  S1 p1;
434  S1 ok1 = 1;
435  break_optimization(&p4);
436  break_optimization(&ok4);
437  break_optimization(&p2);
438  break_optimization(&ok2);
439  break_optimization(&p1);
440  break_optimization(&ok1);
441
442  EXPECT_POISONED(p4);
443  EXPECT_POISONED(p2);
444  EXPECT_POISONED(p1);
445  EXPECT_NOT_POISONED(ok1);
446  EXPECT_NOT_POISONED(ok2);
447  EXPECT_NOT_POISONED(ok4);
448}
449
450TEST(MemorySanitizer, StackTest) {
451  StackTestFunc();
452}
453
454NOINLINE void StackStressFunc() {
455  int foo[10000];
456  break_optimization(foo);
457}
458
459TEST(MemorySanitizer, DISABLED_StackStressTest) {
460  for (int i = 0; i < 1000000; i++)
461    StackStressFunc();
462}
463
464template<class T>
465void TestFloatingPoint() {
466  static volatile T v;
467  static T g[100];
468  break_optimization(&g);
469  T *x = GetPoisoned<T>();
470  T *y = GetPoisoned<T>(1);
471  EXPECT_POISONED(*x);
472  EXPECT_POISONED((long long)*x);
473  EXPECT_POISONED((int)*x);
474  g[0] = *x;
475  g[1] = *x + *y;
476  g[2] = *x - *y;
477  g[3] = *x * *y;
478}
479
480TEST(MemorySanitizer, FloatingPointTest) {
481  TestFloatingPoint<float>();
482  TestFloatingPoint<double>();
483}
484
485TEST(MemorySanitizer, DynMem) {
486  S4 x = 0;
487  S4 *y = GetPoisoned<S4>();
488  memcpy(y, &x, g_one * sizeof(S4));
489  EXPECT_NOT_POISONED(*y);
490}
491
492static char *DynRetTestStr;
493
494TEST(MemorySanitizer, DynRet) {
495  if (!__msan_has_dynamic_component()) return;
496  ReturnPoisoned<S8>();
497  EXPECT_NOT_POISONED(clearenv());
498}
499
500
501TEST(MemorySanitizer, DynRet1) {
502  if (!__msan_has_dynamic_component()) return;
503  ReturnPoisoned<S8>();
504}
505
506struct LargeStruct {
507  S4 x[10];
508};
509
510NOINLINE
511LargeStruct LargeRetTest() {
512  LargeStruct res;
513  res.x[0] = *GetPoisoned<S4>();
514  res.x[1] = *GetPoisoned<S4>();
515  res.x[2] = *GetPoisoned<S4>();
516  res.x[3] = *GetPoisoned<S4>();
517  res.x[4] = *GetPoisoned<S4>();
518  res.x[5] = *GetPoisoned<S4>();
519  res.x[6] = *GetPoisoned<S4>();
520  res.x[7] = *GetPoisoned<S4>();
521  res.x[8] = *GetPoisoned<S4>();
522  res.x[9] = *GetPoisoned<S4>();
523  return res;
524}
525
526TEST(MemorySanitizer, LargeRet) {
527  LargeStruct a = LargeRetTest();
528  EXPECT_POISONED(a.x[0]);
529  EXPECT_POISONED(a.x[9]);
530}
531
532TEST(MemorySanitizer, fread) {
533  char *x = new char[32];
534  FILE *f = fopen("/proc/self/stat", "r");
535  assert(f);
536  fread(x, 1, 32, f);
537  EXPECT_NOT_POISONED(x[0]);
538  EXPECT_NOT_POISONED(x[16]);
539  EXPECT_NOT_POISONED(x[31]);
540  fclose(f);
541  delete x;
542}
543
544TEST(MemorySanitizer, read) {
545  char *x = new char[32];
546  int fd = open("/proc/self/stat", O_RDONLY);
547  assert(fd > 0);
548  int sz = read(fd, x, 32);
549  assert(sz == 32);
550  EXPECT_NOT_POISONED(x[0]);
551  EXPECT_NOT_POISONED(x[16]);
552  EXPECT_NOT_POISONED(x[31]);
553  close(fd);
554  delete x;
555}
556
557TEST(MemorySanitizer, pread) {
558  char *x = new char[32];
559  int fd = open("/proc/self/stat", O_RDONLY);
560  assert(fd > 0);
561  int sz = pread(fd, x, 32, 0);
562  assert(sz == 32);
563  EXPECT_NOT_POISONED(x[0]);
564  EXPECT_NOT_POISONED(x[16]);
565  EXPECT_NOT_POISONED(x[31]);
566  close(fd);
567  delete x;
568}
569
570TEST(MemorySanitizer, readv) {
571  char buf[2011];
572  struct iovec iov[2];
573  iov[0].iov_base = buf + 1;
574  iov[0].iov_len = 5;
575  iov[1].iov_base = buf + 10;
576  iov[1].iov_len = 2000;
577  int fd = open("/proc/self/stat", O_RDONLY);
578  assert(fd > 0);
579  int sz = readv(fd, iov, 2);
580  ASSERT_LT(sz, 5 + 2000);
581  ASSERT_GT(sz, iov[0].iov_len);
582  EXPECT_POISONED(buf[0]);
583  EXPECT_NOT_POISONED(buf[1]);
584  EXPECT_NOT_POISONED(buf[5]);
585  EXPECT_POISONED(buf[6]);
586  EXPECT_POISONED(buf[9]);
587  EXPECT_NOT_POISONED(buf[10]);
588  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
589  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
590  close(fd);
591}
592
593TEST(MemorySanitizer, preadv) {
594  char buf[2011];
595  struct iovec iov[2];
596  iov[0].iov_base = buf + 1;
597  iov[0].iov_len = 5;
598  iov[1].iov_base = buf + 10;
599  iov[1].iov_len = 2000;
600  int fd = open("/proc/self/stat", O_RDONLY);
601  assert(fd > 0);
602  int sz = preadv(fd, iov, 2, 3);
603  ASSERT_LT(sz, 5 + 2000);
604  ASSERT_GT(sz, iov[0].iov_len);
605  EXPECT_POISONED(buf[0]);
606  EXPECT_NOT_POISONED(buf[1]);
607  EXPECT_NOT_POISONED(buf[5]);
608  EXPECT_POISONED(buf[6]);
609  EXPECT_POISONED(buf[9]);
610  EXPECT_NOT_POISONED(buf[10]);
611  EXPECT_NOT_POISONED(buf[10 + (sz - 1) - 5]);
612  EXPECT_POISONED(buf[11 + (sz - 1) - 5]);
613  close(fd);
614}
615
616// FIXME: fails now.
617TEST(MemorySanitizer, DISABLED_ioctl) {
618  struct winsize ws;
619  EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0);
620  EXPECT_NOT_POISONED(ws.ws_col);
621}
622
623TEST(MemorySanitizer, readlink) {
624  char *x = new char[1000];
625  readlink("/proc/self/exe", x, 1000);
626  EXPECT_NOT_POISONED(x[0]);
627  delete [] x;
628}
629
630
631TEST(MemorySanitizer, stat) {
632  struct stat* st = new struct stat;
633  int res = stat("/proc/self/stat", st);
634  assert(!res);
635  EXPECT_NOT_POISONED(st->st_dev);
636  EXPECT_NOT_POISONED(st->st_mode);
637  EXPECT_NOT_POISONED(st->st_size);
638}
639
640TEST(MemorySanitizer, statfs) {
641  struct statfs* st = new struct statfs;
642  int res = statfs("/", st);
643  assert(!res);
644  EXPECT_NOT_POISONED(st->f_type);
645  EXPECT_NOT_POISONED(st->f_bfree);
646  EXPECT_NOT_POISONED(st->f_namelen);
647}
648
649TEST(MemorySanitizer, pipe) {
650  int* pipefd = new int[2];
651  int res = pipe(pipefd);
652  assert(!res);
653  EXPECT_NOT_POISONED(pipefd[0]);
654  EXPECT_NOT_POISONED(pipefd[1]);
655  close(pipefd[0]);
656  close(pipefd[1]);
657}
658
659TEST(MemorySanitizer, pipe2) {
660  int* pipefd = new int[2];
661  int res = pipe2(pipefd, O_NONBLOCK);
662  assert(!res);
663  EXPECT_NOT_POISONED(pipefd[0]);
664  EXPECT_NOT_POISONED(pipefd[1]);
665  close(pipefd[0]);
666  close(pipefd[1]);
667}
668
669TEST(MemorySanitizer, socketpair) {
670  int sv[2];
671  int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
672  assert(!res);
673  EXPECT_NOT_POISONED(sv[0]);
674  EXPECT_NOT_POISONED(sv[1]);
675  close(sv[0]);
676  close(sv[1]);
677}
678
679TEST(MemorySanitizer, bind_getsockname) {
680  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
681
682  struct sockaddr_in sai;
683  memset(&sai, 0, sizeof(sai));
684  sai.sin_family = AF_UNIX;
685  int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai));
686
687  assert(!res);
688  char buf[200];
689  socklen_t addrlen;
690  EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen));
691
692  addrlen = sizeof(buf);
693  res = getsockname(sock, (struct sockaddr *)&buf, &addrlen);
694  EXPECT_NOT_POISONED(addrlen);
695  EXPECT_NOT_POISONED(buf[0]);
696  EXPECT_NOT_POISONED(buf[addrlen - 1]);
697  EXPECT_POISONED(buf[addrlen]);
698  close(sock);
699}
700
701TEST(MemorySanitizer, accept) {
702  int listen_socket = socket(AF_INET, SOCK_STREAM, 0);
703  ASSERT_LT(0, listen_socket);
704
705  struct sockaddr_in sai;
706  sai.sin_family = AF_INET;
707  sai.sin_port = 0;
708  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
709  int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai));
710  ASSERT_EQ(0, res);
711
712  res = listen(listen_socket, 1);
713  ASSERT_EQ(0, res);
714
715  socklen_t sz = sizeof(sai);
716  res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz);
717  ASSERT_EQ(0, res);
718  ASSERT_EQ(sizeof(sai), sz);
719
720  int connect_socket = socket(AF_INET, SOCK_STREAM, 0);
721  ASSERT_LT(0, connect_socket);
722  res = fcntl(connect_socket, F_SETFL, O_NONBLOCK);
723  ASSERT_EQ(0, res);
724  res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai));
725  ASSERT_EQ(-1, res);
726  ASSERT_EQ(EINPROGRESS, errno);
727
728  __msan_poison(&sai, sizeof(sai));
729  int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz);
730  ASSERT_LT(0, new_sock);
731  ASSERT_EQ(sizeof(sai), sz);
732  EXPECT_NOT_POISONED(sai);
733
734  __msan_poison(&sai, sizeof(sai));
735  res = getpeername(new_sock, (struct sockaddr *)&sai, &sz);
736  ASSERT_EQ(0, res);
737  ASSERT_EQ(sizeof(sai), sz);
738  EXPECT_NOT_POISONED(sai);
739
740  close(new_sock);
741  close(connect_socket);
742  close(listen_socket);
743}
744
745TEST(MemorySanitizer, getaddrinfo) {
746  struct addrinfo *ai;
747  struct addrinfo hints;
748  memset(&hints, 0, sizeof(hints));
749  hints.ai_family = AF_INET;
750  int res = getaddrinfo("localhost", NULL, &hints, &ai);
751  ASSERT_EQ(0, res);
752  EXPECT_NOT_POISONED(*ai);
753  ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen);
754  EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr);
755}
756
757#define EXPECT_HOSTENT_NOT_POISONED(he)        \
758  do {                                         \
759    EXPECT_NOT_POISONED(*(he));                \
760    ASSERT_NE((void *) 0, (he)->h_name);       \
761    ASSERT_NE((void *) 0, (he)->h_aliases);    \
762    ASSERT_NE((void *) 0, (he)->h_addr_list);  \
763    EXPECT_NOT_POISONED(strlen((he)->h_name)); \
764    char **p = (he)->h_aliases;                \
765    while (*p) {                               \
766      EXPECT_NOT_POISONED(strlen(*p));         \
767      ++p;                                     \
768    }                                          \
769    char **q = (he)->h_addr_list;              \
770    while (*q) {                               \
771      EXPECT_NOT_POISONED(*q[0]);              \
772      ++q;                                     \
773    }                                          \
774    EXPECT_NOT_POISONED(*q);                   \
775  } while (0)
776
777TEST(MemorySanitizer, gethostent) {
778  struct hostent *he = gethostent();
779  ASSERT_NE((void *)NULL, he);
780  EXPECT_HOSTENT_NOT_POISONED(he);
781}
782
783#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME
784
785TEST(MemorySanitizer, gethostbyname) {
786  struct hostent *he = gethostbyname("localhost");
787  ASSERT_NE((void *)NULL, he);
788  EXPECT_HOSTENT_NOT_POISONED(he);
789}
790
791#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME
792
793TEST(MemorySanitizer, gethostbyname2) {
794  struct hostent *he = gethostbyname2("localhost", AF_INET);
795  ASSERT_NE((void *)NULL, he);
796  EXPECT_HOSTENT_NOT_POISONED(he);
797}
798
799TEST(MemorySanitizer, gethostbyaddr) {
800  in_addr_t addr = inet_addr("127.0.0.1");
801  EXPECT_NOT_POISONED(addr);
802  struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
803  ASSERT_NE((void *)NULL, he);
804  EXPECT_HOSTENT_NOT_POISONED(he);
805}
806
807TEST(MemorySanitizer, gethostent_r) {
808  char buf[2000];
809  struct hostent he;
810  struct hostent *result;
811  int err;
812  int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
813  ASSERT_EQ(0, res);
814  EXPECT_NOT_POISONED(result);
815  ASSERT_NE((void *)NULL, result);
816  EXPECT_HOSTENT_NOT_POISONED(result);
817  EXPECT_NOT_POISONED(err);
818}
819
820TEST(MemorySanitizer, gethostbyname_r) {
821  char buf[2000];
822  struct hostent he;
823  struct hostent *result;
824  int err;
825  int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
826  ASSERT_EQ(0, res);
827  EXPECT_NOT_POISONED(result);
828  ASSERT_NE((void *)NULL, result);
829  EXPECT_HOSTENT_NOT_POISONED(result);
830  EXPECT_NOT_POISONED(err);
831}
832
833TEST(MemorySanitizer, gethostbyname2_r) {
834  char buf[2000];
835  struct hostent he;
836  struct hostent *result;
837  int err;
838  int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
839                             &result, &err);
840  ASSERT_EQ(0, res);
841  EXPECT_NOT_POISONED(result);
842  ASSERT_NE((void *)NULL, result);
843  EXPECT_HOSTENT_NOT_POISONED(result);
844  EXPECT_NOT_POISONED(err);
845}
846
847TEST(MemorySanitizer, gethostbyaddr_r) {
848  char buf[2000];
849  struct hostent he;
850  struct hostent *result;
851  int err;
852  in_addr_t addr = inet_addr("127.0.0.1");
853  EXPECT_NOT_POISONED(addr);
854  int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
855                            &result, &err);
856  ASSERT_EQ(0, res);
857  EXPECT_NOT_POISONED(result);
858  ASSERT_NE((void *)NULL, result);
859  EXPECT_HOSTENT_NOT_POISONED(result);
860  EXPECT_NOT_POISONED(err);
861}
862
863TEST(MemorySanitizer, getsockopt) {
864  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
865  struct linger l[2];
866  socklen_t sz = sizeof(l[0]);
867  int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
868  ASSERT_EQ(0, res);
869  ASSERT_EQ(sizeof(l[0]), sz);
870  EXPECT_NOT_POISONED(l[0]);
871  EXPECT_POISONED(*(char *)(l + 1));
872}
873
874TEST(MemorySanitizer, getcwd) {
875  char path[PATH_MAX + 1];
876  char* res = getcwd(path, sizeof(path));
877  assert(res);
878  EXPECT_NOT_POISONED(path[0]);
879}
880
881TEST(MemorySanitizer, getcwd_gnu) {
882  char* res = getcwd(NULL, 0);
883  assert(res);
884  EXPECT_NOT_POISONED(res[0]);
885  free(res);
886}
887
888TEST(MemorySanitizer, readdir) {
889  DIR *dir = opendir(".");
890  struct dirent *d = readdir(dir);
891  assert(d);
892  EXPECT_NOT_POISONED(d->d_name[0]);
893  closedir(dir);
894}
895
896TEST(MemorySanitizer, readdir_r) {
897  DIR *dir = opendir(".");
898  struct dirent d;
899  struct dirent *pd;
900  int res = readdir_r(dir, &d, &pd);
901  assert(!res);
902  EXPECT_NOT_POISONED(pd);
903  EXPECT_NOT_POISONED(d.d_name[0]);
904  closedir(dir);
905}
906
907TEST(MemorySanitizer, realpath) {
908  const char* relpath = ".";
909  char path[PATH_MAX + 1];
910  char* res = realpath(relpath, path);
911  assert(res);
912  EXPECT_NOT_POISONED(path[0]);
913}
914
915TEST(MemorySanitizer, memcpy) {
916  char* x = new char[2];
917  char* y = new char[2];
918  x[0] = 1;
919  x[1] = *GetPoisoned<char>();
920  memcpy(y, x, 2);
921  EXPECT_NOT_POISONED(y[0]);
922  EXPECT_POISONED(y[1]);
923}
924
925TEST(MemorySanitizer, memmove) {
926  char* x = new char[2];
927  char* y = new char[2];
928  x[0] = 1;
929  x[1] = *GetPoisoned<char>();
930  memmove(y, x, 2);
931  EXPECT_NOT_POISONED(y[0]);
932  EXPECT_POISONED(y[1]);
933}
934
935TEST(MemorySanitizer, strdup) {
936  char buf[4] = "abc";
937  __msan_poison(buf + 2, sizeof(*buf));
938  char *x = strdup(buf);
939  EXPECT_NOT_POISONED(x[0]);
940  EXPECT_NOT_POISONED(x[1]);
941  EXPECT_POISONED(x[2]);
942  EXPECT_NOT_POISONED(x[3]);
943  free(x);
944}
945
946TEST(MemorySanitizer, strndup) {
947  char buf[4] = "abc";
948  __msan_poison(buf + 2, sizeof(*buf));
949  char *x = strndup(buf, 3);
950  EXPECT_NOT_POISONED(x[0]);
951  EXPECT_NOT_POISONED(x[1]);
952  EXPECT_POISONED(x[2]);
953  EXPECT_NOT_POISONED(x[3]);
954  free(x);
955}
956
957TEST(MemorySanitizer, strndup_short) {
958  char buf[4] = "abc";
959  __msan_poison(buf + 1, sizeof(*buf));
960  __msan_poison(buf + 2, sizeof(*buf));
961  char *x = strndup(buf, 2);
962  EXPECT_NOT_POISONED(x[0]);
963  EXPECT_POISONED(x[1]);
964  EXPECT_NOT_POISONED(x[2]);
965  free(x);
966}
967
968
969template<class T, int size>
970void TestOverlapMemmove() {
971  T *x = new T[size];
972  assert(size >= 3);
973  x[2] = 0;
974  memmove(x, x + 1, (size - 1) * sizeof(T));
975  EXPECT_NOT_POISONED(x[1]);
976  if (!__msan_has_dynamic_component()) {
977    // FIXME: under DR we will lose this information
978    // because accesses in memmove will unpoisin the shadow.
979    // We need to use our own memove implementation instead of libc's.
980    EXPECT_POISONED(x[0]);
981    EXPECT_POISONED(x[2]);
982  }
983  delete [] x;
984}
985
986TEST(MemorySanitizer, overlap_memmove) {
987  TestOverlapMemmove<U1, 10>();
988  TestOverlapMemmove<U1, 1000>();
989  TestOverlapMemmove<U8, 4>();
990  TestOverlapMemmove<U8, 1000>();
991}
992
993TEST(MemorySanitizer, strcpy) {  // NOLINT
994  char* x = new char[3];
995  char* y = new char[3];
996  x[0] = 'a';
997  x[1] = *GetPoisoned<char>(1, 1);
998  x[2] = 0;
999  strcpy(y, x);  // NOLINT
1000  EXPECT_NOT_POISONED(y[0]);
1001  EXPECT_POISONED(y[1]);
1002  EXPECT_NOT_POISONED(y[2]);
1003}
1004
1005TEST(MemorySanitizer, strncpy) {  // NOLINT
1006  char* x = new char[3];
1007  char* y = new char[3];
1008  x[0] = 'a';
1009  x[1] = *GetPoisoned<char>(1, 1);
1010  x[2] = 0;
1011  strncpy(y, x, 2);  // NOLINT
1012  EXPECT_NOT_POISONED(y[0]);
1013  EXPECT_POISONED(y[1]);
1014  EXPECT_POISONED(y[2]);
1015}
1016
1017TEST(MemorySanitizer, strtol) {
1018  char *e;
1019  assert(1 == strtol("1", &e, 10));
1020  EXPECT_NOT_POISONED((S8) e);
1021}
1022
1023TEST(MemorySanitizer, strtoll) {
1024  char *e;
1025  assert(1 == strtoll("1", &e, 10));
1026  EXPECT_NOT_POISONED((S8) e);
1027}
1028
1029TEST(MemorySanitizer, strtoul) {
1030  char *e;
1031  assert(1 == strtoul("1", &e, 10));
1032  EXPECT_NOT_POISONED((S8) e);
1033}
1034
1035TEST(MemorySanitizer, strtoull) {
1036  char *e;
1037  assert(1 == strtoull("1", &e, 10));
1038  EXPECT_NOT_POISONED((S8) e);
1039}
1040
1041TEST(MemorySanitizer, strtod) {
1042  char *e;
1043  assert(0 != strtod("1.5", &e));
1044  EXPECT_NOT_POISONED((S8) e);
1045}
1046
1047TEST(MemorySanitizer, strtof) {
1048  char *e;
1049  assert(0 != strtof("1.5", &e));
1050  EXPECT_NOT_POISONED((S8) e);
1051}
1052
1053TEST(MemorySanitizer, strtold) {
1054  char *e;
1055  assert(0 != strtold("1.5", &e));
1056  EXPECT_NOT_POISONED((S8) e);
1057}
1058
1059TEST(MemorySanitizer, modf) {
1060  double x, y;
1061  x = modf(2.1, &y);
1062  EXPECT_NOT_POISONED(y);
1063}
1064
1065TEST(MemorySanitizer, modff) {
1066  float x, y;
1067  x = modff(2.1, &y);
1068  EXPECT_NOT_POISONED(y);
1069}
1070
1071TEST(MemorySanitizer, modfl) {
1072  long double x, y;
1073  x = modfl(2.1, &y);
1074  EXPECT_NOT_POISONED(y);
1075}
1076
1077TEST(MemorySanitizer, sprintf) {  // NOLINT
1078  char buff[10];
1079  break_optimization(buff);
1080  EXPECT_POISONED(buff[0]);
1081  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1082  assert(res == 7);
1083  assert(buff[0] == '1');
1084  assert(buff[1] == '2');
1085  assert(buff[2] == '3');
1086  assert(buff[6] == '7');
1087  assert(buff[7] == 0);
1088  EXPECT_POISONED(buff[8]);
1089}
1090
1091TEST(MemorySanitizer, snprintf) {
1092  char buff[10];
1093  break_optimization(buff);
1094  EXPECT_POISONED(buff[0]);
1095  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1096  assert(res == 7);
1097  assert(buff[0] == '1');
1098  assert(buff[1] == '2');
1099  assert(buff[2] == '3');
1100  assert(buff[6] == '7');
1101  assert(buff[7] == 0);
1102  EXPECT_POISONED(buff[8]);
1103}
1104
1105TEST(MemorySanitizer, swprintf) {
1106  wchar_t buff[10];
1107  assert(sizeof(wchar_t) == 4);
1108  break_optimization(buff);
1109  EXPECT_POISONED(buff[0]);
1110  int res = swprintf(buff, 9, L"%d", 1234567);
1111  assert(res == 7);
1112  assert(buff[0] == '1');
1113  assert(buff[1] == '2');
1114  assert(buff[2] == '3');
1115  assert(buff[6] == '7');
1116  assert(buff[7] == 0);
1117  EXPECT_POISONED(buff[8]);
1118}
1119
1120TEST(MemorySanitizer, asprintf) {  // NOLINT
1121  char *pbuf;
1122  EXPECT_POISONED(pbuf);
1123  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1124  assert(res == 7);
1125  EXPECT_NOT_POISONED(pbuf);
1126  assert(pbuf[0] == '1');
1127  assert(pbuf[1] == '2');
1128  assert(pbuf[2] == '3');
1129  assert(pbuf[6] == '7');
1130  assert(pbuf[7] == 0);
1131  free(pbuf);
1132}
1133
1134TEST(MemorySanitizer, wcstombs) {
1135  const wchar_t *x = L"abc";
1136  char buff[10];
1137  int res = wcstombs(buff, x, 4);
1138  EXPECT_EQ(res, 3);
1139  EXPECT_EQ(buff[0], 'a');
1140  EXPECT_EQ(buff[1], 'b');
1141  EXPECT_EQ(buff[2], 'c');
1142}
1143
1144TEST(MemorySanitizer, gettimeofday) {
1145  struct timeval tv;
1146  struct timezone tz;
1147  break_optimization(&tv);
1148  break_optimization(&tz);
1149  assert(sizeof(tv) == 16);
1150  assert(sizeof(tz) == 8);
1151  EXPECT_POISONED(tv.tv_sec);
1152  EXPECT_POISONED(tv.tv_usec);
1153  EXPECT_POISONED(tz.tz_minuteswest);
1154  EXPECT_POISONED(tz.tz_dsttime);
1155  assert(0 == gettimeofday(&tv, &tz));
1156  EXPECT_NOT_POISONED(tv.tv_sec);
1157  EXPECT_NOT_POISONED(tv.tv_usec);
1158  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1159  EXPECT_NOT_POISONED(tz.tz_dsttime);
1160}
1161
1162TEST(MemorySanitizer, clock_gettime) {
1163  struct timespec tp;
1164  EXPECT_POISONED(tp.tv_sec);
1165  EXPECT_POISONED(tp.tv_nsec);
1166  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1167  EXPECT_NOT_POISONED(tp.tv_sec);
1168  EXPECT_NOT_POISONED(tp.tv_nsec);
1169}
1170
1171TEST(MemorySanitizer, clock_getres) {
1172  struct timespec tp;
1173  EXPECT_POISONED(tp.tv_sec);
1174  EXPECT_POISONED(tp.tv_nsec);
1175  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1176  EXPECT_POISONED(tp.tv_sec);
1177  EXPECT_POISONED(tp.tv_nsec);
1178  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1179  EXPECT_NOT_POISONED(tp.tv_sec);
1180  EXPECT_NOT_POISONED(tp.tv_nsec);
1181}
1182
1183TEST(MemorySanitizer, getitimer) {
1184  struct itimerval it1, it2;
1185  int res;
1186  EXPECT_POISONED(it1.it_interval.tv_sec);
1187  EXPECT_POISONED(it1.it_interval.tv_usec);
1188  EXPECT_POISONED(it1.it_value.tv_sec);
1189  EXPECT_POISONED(it1.it_value.tv_usec);
1190  res = getitimer(ITIMER_VIRTUAL, &it1);
1191  assert(!res);
1192  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1193  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1194  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1195  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1196
1197  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1198  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1199
1200  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1201  assert(!res);
1202  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1203  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1204  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1205  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1206
1207  // Check that old_value can be 0, and disable the timer.
1208  memset(&it1, 0, sizeof(it1));
1209  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1210  assert(!res);
1211}
1212
1213TEST(MemorySanitizer, time) {
1214  time_t t;
1215  EXPECT_POISONED(t);
1216  time_t t2 = time(&t);
1217  assert(t2 != (time_t)-1);
1218  EXPECT_NOT_POISONED(t);
1219}
1220
1221TEST(MemorySanitizer, localtime) {
1222  time_t t = 123;
1223  struct tm *time = localtime(&t);
1224  assert(time != 0);
1225  EXPECT_NOT_POISONED(time->tm_sec);
1226  EXPECT_NOT_POISONED(time->tm_hour);
1227  EXPECT_NOT_POISONED(time->tm_year);
1228  EXPECT_NOT_POISONED(time->tm_isdst);
1229}
1230
1231TEST(MemorySanitizer, localtime_r) {
1232  time_t t = 123;
1233  struct tm time;
1234  struct tm *res = localtime_r(&t, &time);
1235  assert(res != 0);
1236  EXPECT_NOT_POISONED(time.tm_sec);
1237  EXPECT_NOT_POISONED(time.tm_hour);
1238  EXPECT_NOT_POISONED(time.tm_year);
1239  EXPECT_NOT_POISONED(time.tm_isdst);
1240}
1241
1242TEST(MemorySanitizer, mmap) {
1243  const int size = 4096;
1244  void *p1, *p2;
1245  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1246  __msan_poison(p1, size);
1247  munmap(p1, size);
1248  for (int i = 0; i < 1000; i++) {
1249    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1250    if (p2 == p1)
1251      break;
1252    else
1253      munmap(p2, size);
1254  }
1255  if (p1 == p2) {
1256    EXPECT_NOT_POISONED(*(char*)p2);
1257    munmap(p2, size);
1258  }
1259}
1260
1261// FIXME: enable and add ecvt.
1262// FIXME: check why msandr does nt handle fcvt.
1263TEST(MemorySanitizer, fcvt) {
1264  int a, b;
1265  break_optimization(&a);
1266  break_optimization(&b);
1267  EXPECT_POISONED(a);
1268  EXPECT_POISONED(b);
1269  char *str = fcvt(12345.6789, 10, &a, &b);
1270  EXPECT_NOT_POISONED(a);
1271  EXPECT_NOT_POISONED(b);
1272}
1273
1274TEST(MemorySanitizer, frexp) {
1275  int x;
1276  x = *GetPoisoned<int>();
1277  double r = frexp(1.1, &x);
1278  EXPECT_NOT_POISONED(r);
1279  EXPECT_NOT_POISONED(x);
1280
1281  x = *GetPoisoned<int>();
1282  float rf = frexpf(1.1, &x);
1283  EXPECT_NOT_POISONED(rf);
1284  EXPECT_NOT_POISONED(x);
1285
1286  x = *GetPoisoned<int>();
1287  double rl = frexpl(1.1, &x);
1288  EXPECT_NOT_POISONED(rl);
1289  EXPECT_NOT_POISONED(x);
1290}
1291
1292namespace {
1293
1294static int cnt;
1295
1296void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1297  assert(signo == SIGPROF);
1298  assert(si);
1299  EXPECT_NOT_POISONED(si->si_errno);
1300  EXPECT_NOT_POISONED(si->si_pid);
1301#if __linux__
1302# if defined(__x86_64__)
1303  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1304# elif defined(__i386__)
1305  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1306# endif
1307#endif
1308  ++cnt;
1309}
1310
1311TEST(MemorySanitizer, sigaction) {
1312  struct sigaction act = {};
1313  struct sigaction oldact = {};
1314  struct sigaction origact = {};
1315
1316  sigaction(SIGPROF, 0, &origact);
1317
1318  act.sa_flags |= SA_SIGINFO;
1319  act.sa_sigaction = &SigactionHandler;
1320  sigaction(SIGPROF, &act, 0);
1321
1322  kill(getpid(), SIGPROF);
1323
1324  act.sa_flags &= ~SA_SIGINFO;
1325  act.sa_handler = SIG_DFL;
1326  sigaction(SIGPROF, &act, 0);
1327
1328  act.sa_flags &= ~SA_SIGINFO;
1329  act.sa_handler = SIG_IGN;
1330  sigaction(SIGPROF, &act, &oldact);
1331  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1332  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1333  kill(getpid(), SIGPROF);
1334
1335  act.sa_flags |= SA_SIGINFO;
1336  act.sa_sigaction = &SigactionHandler;
1337  sigaction(SIGPROF, &act, &oldact);
1338  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1339  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1340  kill(getpid(), SIGPROF);
1341
1342  act.sa_flags &= ~SA_SIGINFO;
1343  act.sa_handler = SIG_DFL;
1344  sigaction(SIGPROF, &act, &oldact);
1345  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1346  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1347  EXPECT_EQ(2, cnt);
1348
1349  sigaction(SIGPROF, &origact, 0);
1350}
1351
1352} // namespace
1353
1354struct StructWithDtor {
1355  ~StructWithDtor();
1356};
1357
1358NOINLINE StructWithDtor::~StructWithDtor() {
1359  break_optimization(0);
1360}
1361
1362TEST(MemorySanitizer, Invoke) {
1363  StructWithDtor s;  // Will cause the calls to become invokes.
1364  EXPECT_NOT_POISONED(0);
1365  EXPECT_POISONED(*GetPoisoned<int>());
1366  EXPECT_NOT_POISONED(0);
1367  EXPECT_POISONED(*GetPoisoned<int>());
1368  EXPECT_POISONED(ReturnPoisoned<S4>());
1369}
1370
1371TEST(MemorySanitizer, ptrtoint) {
1372  // Test that shadow is propagated through pointer-to-integer conversion.
1373  void* p = (void*)0xABCD;
1374  __msan_poison(((char*)&p) + 1, sizeof(p));
1375  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1376
1377  void* q = (void*)0xABCD;
1378  __msan_poison(&q, sizeof(q) - 1);
1379  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1380}
1381
1382static void vaargsfn2(int guard, ...) {
1383  va_list vl;
1384  va_start(vl, guard);
1385  EXPECT_NOT_POISONED(va_arg(vl, int));
1386  EXPECT_NOT_POISONED(va_arg(vl, int));
1387  EXPECT_NOT_POISONED(va_arg(vl, int));
1388  EXPECT_POISONED(va_arg(vl, double));
1389  va_end(vl);
1390}
1391
1392static void vaargsfn(int guard, ...) {
1393  va_list vl;
1394  va_start(vl, guard);
1395  EXPECT_NOT_POISONED(va_arg(vl, int));
1396  EXPECT_POISONED(va_arg(vl, int));
1397  // The following call will overwrite __msan_param_tls.
1398  // Checks after it test that arg shadow was somehow saved across the call.
1399  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1400  EXPECT_NOT_POISONED(va_arg(vl, int));
1401  EXPECT_POISONED(va_arg(vl, int));
1402  va_end(vl);
1403}
1404
1405TEST(MemorySanitizer, VAArgTest) {
1406  int* x = GetPoisoned<int>();
1407  int* y = GetPoisoned<int>(4);
1408  vaargsfn(1, 13, *x, 42, *y);
1409}
1410
1411static void vaargsfn_many(int guard, ...) {
1412  va_list vl;
1413  va_start(vl, guard);
1414  EXPECT_NOT_POISONED(va_arg(vl, int));
1415  EXPECT_POISONED(va_arg(vl, int));
1416  EXPECT_NOT_POISONED(va_arg(vl, int));
1417  EXPECT_NOT_POISONED(va_arg(vl, int));
1418  EXPECT_NOT_POISONED(va_arg(vl, int));
1419  EXPECT_NOT_POISONED(va_arg(vl, int));
1420  EXPECT_NOT_POISONED(va_arg(vl, int));
1421  EXPECT_NOT_POISONED(va_arg(vl, int));
1422  EXPECT_NOT_POISONED(va_arg(vl, int));
1423  EXPECT_POISONED(va_arg(vl, int));
1424  va_end(vl);
1425}
1426
1427TEST(MemorySanitizer, VAArgManyTest) {
1428  int* x = GetPoisoned<int>();
1429  int* y = GetPoisoned<int>(4);
1430  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1431}
1432
1433static void vaargsfn_pass2(va_list vl) {
1434  EXPECT_NOT_POISONED(va_arg(vl, int));
1435  EXPECT_NOT_POISONED(va_arg(vl, int));
1436  EXPECT_POISONED(va_arg(vl, int));
1437}
1438
1439static void vaargsfn_pass(int guard, ...) {
1440  va_list vl;
1441  va_start(vl, guard);
1442  EXPECT_POISONED(va_arg(vl, int));
1443  vaargsfn_pass2(vl);
1444  va_end(vl);
1445}
1446
1447TEST(MemorySanitizer, VAArgPass) {
1448  int* x = GetPoisoned<int>();
1449  int* y = GetPoisoned<int>(4);
1450  vaargsfn_pass(1, *x, 2, 3, *y);
1451}
1452
1453static void vaargsfn_copy2(va_list vl) {
1454  EXPECT_NOT_POISONED(va_arg(vl, int));
1455  EXPECT_POISONED(va_arg(vl, int));
1456}
1457
1458static void vaargsfn_copy(int guard, ...) {
1459  va_list vl;
1460  va_start(vl, guard);
1461  EXPECT_NOT_POISONED(va_arg(vl, int));
1462  EXPECT_POISONED(va_arg(vl, int));
1463  va_list vl2;
1464  va_copy(vl2, vl);
1465  vaargsfn_copy2(vl2);
1466  EXPECT_NOT_POISONED(va_arg(vl, int));
1467  EXPECT_POISONED(va_arg(vl, int));
1468  va_end(vl);
1469}
1470
1471TEST(MemorySanitizer, VAArgCopy) {
1472  int* x = GetPoisoned<int>();
1473  int* y = GetPoisoned<int>(4);
1474  vaargsfn_copy(1, 2, *x, 3, *y);
1475}
1476
1477static void vaargsfn_ptr(int guard, ...) {
1478  va_list vl;
1479  va_start(vl, guard);
1480  EXPECT_NOT_POISONED(va_arg(vl, int*));
1481  EXPECT_POISONED(va_arg(vl, int*));
1482  EXPECT_NOT_POISONED(va_arg(vl, int*));
1483  EXPECT_POISONED(va_arg(vl, double*));
1484  va_end(vl);
1485}
1486
1487TEST(MemorySanitizer, VAArgPtr) {
1488  int** x = GetPoisoned<int*>();
1489  double** y = GetPoisoned<double*>(8);
1490  int z;
1491  vaargsfn_ptr(1, &z, *x, &z, *y);
1492}
1493
1494static void vaargsfn_overflow(int guard, ...) {
1495  va_list vl;
1496  va_start(vl, guard);
1497  EXPECT_NOT_POISONED(va_arg(vl, int));
1498  EXPECT_NOT_POISONED(va_arg(vl, int));
1499  EXPECT_POISONED(va_arg(vl, int));
1500  EXPECT_NOT_POISONED(va_arg(vl, int));
1501  EXPECT_NOT_POISONED(va_arg(vl, int));
1502  EXPECT_NOT_POISONED(va_arg(vl, int));
1503
1504  EXPECT_NOT_POISONED(va_arg(vl, double));
1505  EXPECT_NOT_POISONED(va_arg(vl, double));
1506  EXPECT_NOT_POISONED(va_arg(vl, double));
1507  EXPECT_POISONED(va_arg(vl, double));
1508  EXPECT_NOT_POISONED(va_arg(vl, double));
1509  EXPECT_POISONED(va_arg(vl, int*));
1510  EXPECT_NOT_POISONED(va_arg(vl, double));
1511  EXPECT_NOT_POISONED(va_arg(vl, double));
1512
1513  EXPECT_POISONED(va_arg(vl, int));
1514  EXPECT_POISONED(va_arg(vl, double));
1515  EXPECT_POISONED(va_arg(vl, int*));
1516
1517  EXPECT_NOT_POISONED(va_arg(vl, int));
1518  EXPECT_NOT_POISONED(va_arg(vl, double));
1519  EXPECT_NOT_POISONED(va_arg(vl, int*));
1520
1521  EXPECT_POISONED(va_arg(vl, int));
1522  EXPECT_POISONED(va_arg(vl, double));
1523  EXPECT_POISONED(va_arg(vl, int*));
1524
1525  va_end(vl);
1526}
1527
1528TEST(MemorySanitizer, VAArgOverflow) {
1529  int* x = GetPoisoned<int>();
1530  double* y = GetPoisoned<double>(8);
1531  int** p = GetPoisoned<int*>(16);
1532  int z;
1533  vaargsfn_overflow(1,
1534      1, 2, *x, 4, 5, 6,
1535      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1536      // the following args will overflow for sure
1537      *x, *y, *p,
1538      7, 9.9, &z,
1539      *x, *y, *p);
1540}
1541
1542static void vaargsfn_tlsoverwrite2(int guard, ...) {
1543  va_list vl;
1544  va_start(vl, guard);
1545  EXPECT_NOT_POISONED(va_arg(vl, int));
1546  va_end(vl);
1547}
1548
1549static void vaargsfn_tlsoverwrite(int guard, ...) {
1550  // This call will overwrite TLS contents unless it's backed up somewhere.
1551  vaargsfn_tlsoverwrite2(2, 42);
1552  va_list vl;
1553  va_start(vl, guard);
1554  EXPECT_POISONED(va_arg(vl, int));
1555  va_end(vl);
1556}
1557
1558TEST(MemorySanitizer, VAArgTLSOverwrite) {
1559  int* x = GetPoisoned<int>();
1560  vaargsfn_tlsoverwrite(1, *x);
1561}
1562
1563struct StructByVal {
1564  int a, b, c, d, e, f;
1565};
1566
1567NOINLINE void StructByValTestFunc(struct StructByVal s) {
1568  EXPECT_NOT_POISONED(s.a);
1569  EXPECT_POISONED(s.b);
1570  EXPECT_NOT_POISONED(s.c);
1571  EXPECT_POISONED(s.d);
1572  EXPECT_NOT_POISONED(s.e);
1573  EXPECT_POISONED(s.f);
1574}
1575
1576NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1577  StructByValTestFunc(s);
1578}
1579
1580NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1581  StructByValTestFunc(s);
1582}
1583
1584TEST(MemorySanitizer, StructByVal) {
1585  // Large aggregates are passed as "byval" pointer argument in LLVM.
1586  struct StructByVal s;
1587  s.a = 1;
1588  s.b = *GetPoisoned<int>();
1589  s.c = 2;
1590  s.d = *GetPoisoned<int>();
1591  s.e = 3;
1592  s.f = *GetPoisoned<int>();
1593  StructByValTestFunc(s);
1594  StructByValTestFunc1(s);
1595  StructByValTestFunc2(0, s);
1596}
1597
1598
1599#if MSAN_HAS_M128
1600NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1601NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1602TEST(MemorySanitizer, m128) {
1603  __m128i a = _mm_set1_epi16(0x1234);
1604  __m128i b = _mm_set1_epi16(0x7890);
1605  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1606  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1607}
1608// FIXME: add more tests for __m128i.
1609#endif  // MSAN_HAS_M128
1610
1611// We should not complain when copying this poisoned hole.
1612struct StructWithHole {
1613  U4  a;
1614  // 4-byte hole.
1615  U8  b;
1616};
1617
1618NOINLINE StructWithHole ReturnStructWithHole() {
1619  StructWithHole res;
1620  __msan_poison(&res, sizeof(res));
1621  res.a = 1;
1622  res.b = 2;
1623  return res;
1624}
1625
1626TEST(MemorySanitizer, StructWithHole) {
1627  StructWithHole a = ReturnStructWithHole();
1628  break_optimization(&a);
1629}
1630
1631template <class T>
1632NOINLINE T ReturnStruct() {
1633  T res;
1634  __msan_poison(&res, sizeof(res));
1635  res.a = 1;
1636  return res;
1637}
1638
1639template <class T>
1640NOINLINE void TestReturnStruct() {
1641  T s1 = ReturnStruct<T>();
1642  EXPECT_NOT_POISONED(s1.a);
1643  EXPECT_POISONED(s1.b);
1644}
1645
1646struct SSS1 {
1647  int a, b, c;
1648};
1649struct SSS2 {
1650  int b, a, c;
1651};
1652struct SSS3 {
1653  int b, c, a;
1654};
1655struct SSS4 {
1656  int c, b, a;
1657};
1658
1659struct SSS5 {
1660  int a;
1661  float b;
1662};
1663struct SSS6 {
1664  int a;
1665  double b;
1666};
1667struct SSS7 {
1668  S8 b;
1669  int a;
1670};
1671struct SSS8 {
1672  S2 b;
1673  S8 a;
1674};
1675
1676TEST(MemorySanitizer, IntStruct3) {
1677  TestReturnStruct<SSS1>();
1678  TestReturnStruct<SSS2>();
1679  TestReturnStruct<SSS3>();
1680  TestReturnStruct<SSS4>();
1681  TestReturnStruct<SSS5>();
1682  TestReturnStruct<SSS6>();
1683  TestReturnStruct<SSS7>();
1684  TestReturnStruct<SSS8>();
1685}
1686
1687struct LongStruct {
1688  U1 a1, b1;
1689  U2 a2, b2;
1690  U4 a4, b4;
1691  U8 a8, b8;
1692};
1693
1694NOINLINE LongStruct ReturnLongStruct1() {
1695  LongStruct res;
1696  __msan_poison(&res, sizeof(res));
1697  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1698  // leaves b1, .., b8 poisoned.
1699  return res;
1700}
1701
1702NOINLINE LongStruct ReturnLongStruct2() {
1703  LongStruct res;
1704  __msan_poison(&res, sizeof(res));
1705  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1706  // leaves a1, .., a8 poisoned.
1707  return res;
1708}
1709
1710TEST(MemorySanitizer, LongStruct) {
1711  LongStruct s1 = ReturnLongStruct1();
1712  __msan_print_shadow(&s1, sizeof(s1));
1713  EXPECT_NOT_POISONED(s1.a1);
1714  EXPECT_NOT_POISONED(s1.a2);
1715  EXPECT_NOT_POISONED(s1.a4);
1716  EXPECT_NOT_POISONED(s1.a8);
1717
1718  EXPECT_POISONED(s1.b1);
1719  EXPECT_POISONED(s1.b2);
1720  EXPECT_POISONED(s1.b4);
1721  EXPECT_POISONED(s1.b8);
1722
1723  LongStruct s2 = ReturnLongStruct2();
1724  __msan_print_shadow(&s2, sizeof(s2));
1725  EXPECT_NOT_POISONED(s2.b1);
1726  EXPECT_NOT_POISONED(s2.b2);
1727  EXPECT_NOT_POISONED(s2.b4);
1728  EXPECT_NOT_POISONED(s2.b8);
1729
1730  EXPECT_POISONED(s2.a1);
1731  EXPECT_POISONED(s2.a2);
1732  EXPECT_POISONED(s2.a4);
1733  EXPECT_POISONED(s2.a8);
1734}
1735
1736TEST(MemorySanitizer, getrlimit) {
1737  struct rlimit limit;
1738  __msan_poison(&limit, sizeof(limit));
1739  int result = getrlimit(RLIMIT_DATA, &limit);
1740  assert(result == 0);
1741  EXPECT_NOT_POISONED(limit.rlim_cur);
1742  EXPECT_NOT_POISONED(limit.rlim_max);
1743}
1744
1745TEST(MemorySanitizer, getrusage) {
1746  struct rusage usage;
1747  __msan_poison(&usage, sizeof(usage));
1748  int result = getrusage(RUSAGE_SELF, &usage);
1749  assert(result == 0);
1750  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
1751  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
1752  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
1753  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
1754  EXPECT_NOT_POISONED(usage.ru_maxrss);
1755  EXPECT_NOT_POISONED(usage.ru_minflt);
1756  EXPECT_NOT_POISONED(usage.ru_majflt);
1757  EXPECT_NOT_POISONED(usage.ru_inblock);
1758  EXPECT_NOT_POISONED(usage.ru_oublock);
1759  EXPECT_NOT_POISONED(usage.ru_nvcsw);
1760  EXPECT_NOT_POISONED(usage.ru_nivcsw);
1761}
1762
1763#ifdef __GLIBC__
1764extern char *program_invocation_name;
1765#else  // __GLIBC__
1766# error "TODO: port this"
1767#endif
1768
1769static void dladdr_testfn() {}
1770
1771TEST(MemorySanitizer, dladdr) {
1772  Dl_info info;
1773  __msan_poison(&info, sizeof(info));
1774  int result = dladdr((const void*)dladdr_testfn, &info);
1775  assert(result != 0);
1776  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
1777  if (info.dli_fname)
1778    EXPECT_NOT_POISONED(strlen(info.dli_fname));
1779  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
1780  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
1781  if (info.dli_sname)
1782    EXPECT_NOT_POISONED(strlen(info.dli_sname));
1783  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
1784}
1785
1786static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
1787  (*(int *)data)++;
1788  EXPECT_NOT_POISONED(info->dlpi_addr);
1789  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
1790  EXPECT_NOT_POISONED(info->dlpi_phnum);
1791  for (int i = 0; i < info->dlpi_phnum; ++i)
1792    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
1793  return 0;
1794}
1795
1796#ifndef MSAN_TEST_DISABLE_DLOPEN
1797
1798// Compute the path to our loadable DSO.  We assume it's in the same
1799// directory.  Only use string routines that we intercept so far to do this.
1800static int PathToLoadable(char *buf, size_t sz) {
1801  const char *basename = "libmsan_loadable.x86_64.so";
1802  char *argv0 = program_invocation_name;
1803  char *last_slash = strrchr(argv0, '/');
1804  assert(last_slash);
1805  int res =
1806      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
1807  return res < sz ? 0 : res;
1808}
1809
1810TEST(MemorySanitizer, dl_iterate_phdr) {
1811  char path[4096];
1812  int res = PathToLoadable(path, sizeof(path));
1813  assert(!res);
1814
1815  // Having at least one dlopen'ed library in the process makes this more
1816  // entertaining.
1817  void *lib = dlopen(path, RTLD_LAZY);
1818  ASSERT_NE((void*)0, lib);
1819
1820  int count = 0;
1821  int result = dl_iterate_phdr(dl_phdr_callback, &count);
1822  assert(count > 0);
1823
1824  dlclose(lib);
1825}
1826
1827
1828TEST(MemorySanitizer, dlopen) {
1829  char path[4096];
1830  int res = PathToLoadable(path, sizeof(path));
1831  assert(!res);
1832
1833  // We need to clear shadow for globals when doing dlopen.  In order to test
1834  // this, we have to poison the shadow for the DSO before we load it.  In
1835  // general this is difficult, but the loader tends to reload things in the
1836  // same place, so we open, close, and then reopen.  The global should always
1837  // start out clean after dlopen.
1838  for (int i = 0; i < 2; i++) {
1839    void *lib = dlopen(path, RTLD_LAZY);
1840    if (lib == NULL) {
1841      printf("dlerror: %s\n", dlerror());
1842      assert(lib != NULL);
1843    }
1844    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
1845    assert(get_dso_global);
1846    void **dso_global = get_dso_global();
1847    EXPECT_NOT_POISONED(*dso_global);
1848    __msan_poison(dso_global, sizeof(*dso_global));
1849    EXPECT_POISONED(*dso_global);
1850    dlclose(lib);
1851  }
1852}
1853
1854// Regression test for a crash in dlopen() interceptor.
1855TEST(MemorySanitizer, dlopenFailed) {
1856  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
1857  void *lib = dlopen(path, RTLD_LAZY);
1858  ASSERT_EQ(0, lib);
1859}
1860
1861#endif // MSAN_TEST_DISABLE_DLOPEN
1862
1863TEST(MemorySanitizer, scanf) {
1864  const char *input = "42 hello";
1865  int* d = new int;
1866  char* s = new char[7];
1867  int res = sscanf(input, "%d %5s", d, s);
1868  printf("res %d\n", res);
1869  assert(res == 2);
1870  EXPECT_NOT_POISONED(*d);
1871  EXPECT_NOT_POISONED(s[0]);
1872  EXPECT_NOT_POISONED(s[1]);
1873  EXPECT_NOT_POISONED(s[2]);
1874  EXPECT_NOT_POISONED(s[3]);
1875  EXPECT_NOT_POISONED(s[4]);
1876  EXPECT_NOT_POISONED(s[5]);
1877  EXPECT_POISONED(s[6]);
1878  delete s;
1879  delete d;
1880}
1881
1882static void *SimpleThread_threadfn(void* data) {
1883  return new int;
1884}
1885
1886TEST(MemorySanitizer, SimpleThread) {
1887  pthread_t t;
1888  void *p;
1889  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
1890  assert(!res);
1891  EXPECT_NOT_POISONED(t);
1892  res = pthread_join(t, &p);
1893  assert(!res);
1894  if (!__msan_has_dynamic_component())  // FIXME: intercept pthread_join (?).
1895    __msan_unpoison(&p, sizeof(p));
1896  delete (int*)p;
1897}
1898
1899static void *SmallStackThread_threadfn(void* data) {
1900  return 0;
1901}
1902
1903TEST(MemorySanitizer, SmallStackThread) {
1904  pthread_attr_t attr;
1905  pthread_t t;
1906  void *p;
1907  int res;
1908  res = pthread_attr_init(&attr);
1909  ASSERT_EQ(0, res);
1910  res = pthread_attr_setstacksize(&attr, 64 * 1024);
1911  ASSERT_EQ(0, res);
1912  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
1913  ASSERT_EQ(0, res);
1914  res = pthread_join(t, &p);
1915  ASSERT_EQ(0, res);
1916  res = pthread_attr_destroy(&attr);
1917  ASSERT_EQ(0, res);
1918}
1919
1920TEST(MemorySanitizer, PreAllocatedStackThread) {
1921  pthread_attr_t attr;
1922  pthread_t t;
1923  int res;
1924  res = pthread_attr_init(&attr);
1925  ASSERT_EQ(0, res);
1926  void *stack;
1927  const size_t kStackSize = 64 * 1024;
1928  res = posix_memalign(&stack, 4096, kStackSize);
1929  ASSERT_EQ(0, res);
1930  res = pthread_attr_setstack(&attr, stack, kStackSize);
1931  ASSERT_EQ(0, res);
1932  // A small self-allocated stack can not be extended by the tool.
1933  // In this case pthread_create is expected to fail.
1934  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
1935  EXPECT_NE(0, res);
1936  res = pthread_attr_destroy(&attr);
1937  ASSERT_EQ(0, res);
1938}
1939
1940TEST(MemorySanitizer, pthread_getschedparam) {
1941  int policy;
1942  struct sched_param param;
1943  int res = pthread_getschedparam(pthread_self(), &policy, &param);
1944  ASSERT_EQ(0, res);
1945  EXPECT_NOT_POISONED(policy);
1946  EXPECT_NOT_POISONED(param.sched_priority);
1947}
1948
1949TEST(MemorySanitizer, posix_memalign) {
1950  void *p;
1951  EXPECT_POISONED(p);
1952  int res = posix_memalign(&p, 4096, 13);
1953  ASSERT_EQ(0, res);
1954  EXPECT_NOT_POISONED(p);
1955  free(p);
1956}
1957
1958TEST(MemorySanitizer, inet_pton) {
1959  const char *s = "1:0:0:0:0:0:0:8";
1960  unsigned char buf[sizeof(struct in6_addr)];
1961  int res = inet_pton(AF_INET6, s, buf);
1962  ASSERT_EQ(1, res);
1963  EXPECT_NOT_POISONED(buf[0]);
1964  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
1965
1966  char s_out[INET6_ADDRSTRLEN];
1967  EXPECT_POISONED(s_out[3]);
1968  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
1969  ASSERT_NE((void*)0, q);
1970  EXPECT_NOT_POISONED(s_out[3]);
1971}
1972
1973TEST(MemorySanitizer, inet_aton) {
1974  const char *s = "127.0.0.1";
1975  struct in_addr in[2];
1976  int res = inet_aton(s, in);
1977  ASSERT_NE(0, res);
1978  EXPECT_NOT_POISONED(in[0]);
1979  EXPECT_POISONED(*(char *)(in + 1));
1980}
1981
1982TEST(MemorySanitizer, uname) {
1983  struct utsname u;
1984  int res = uname(&u);
1985  assert(!res);
1986  EXPECT_NOT_POISONED(strlen(u.sysname));
1987  EXPECT_NOT_POISONED(strlen(u.nodename));
1988  EXPECT_NOT_POISONED(strlen(u.release));
1989  EXPECT_NOT_POISONED(strlen(u.version));
1990  EXPECT_NOT_POISONED(strlen(u.machine));
1991}
1992
1993TEST(MemorySanitizer, gethostname) {
1994  char buf[100];
1995  int res = gethostname(buf, 100);
1996  assert(!res);
1997  EXPECT_NOT_POISONED(strlen(buf));
1998}
1999
2000TEST(MemorySanitizer, sysinfo) {
2001  struct sysinfo info;
2002  int res = sysinfo(&info);
2003  assert(!res);
2004  EXPECT_NOT_POISONED(info);
2005}
2006
2007TEST(MemorySanitizer, getpwuid) {
2008  struct passwd *p = getpwuid(0); // root
2009  assert(p);
2010  EXPECT_NOT_POISONED(p->pw_name);
2011  assert(p->pw_name);
2012  EXPECT_NOT_POISONED(p->pw_name[0]);
2013  EXPECT_NOT_POISONED(p->pw_uid);
2014  assert(p->pw_uid == 0);
2015}
2016
2017TEST(MemorySanitizer, getpwnam_r) {
2018  struct passwd pwd;
2019  struct passwd *pwdres;
2020  char buf[10000];
2021  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
2022  assert(!res);
2023  EXPECT_NOT_POISONED(pwd.pw_name);
2024  assert(pwd.pw_name);
2025  EXPECT_NOT_POISONED(pwd.pw_name[0]);
2026  EXPECT_NOT_POISONED(pwd.pw_uid);
2027  assert(pwd.pw_uid == 0);
2028}
2029
2030TEST(MemorySanitizer, getpwnam_r_positive) {
2031  struct passwd pwd;
2032  struct passwd *pwdres;
2033  char s[5];
2034  strncpy(s, "abcd", 5);
2035  __msan_poison(s, 5);
2036  char buf[10000];
2037  int res;
2038  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2039}
2040
2041TEST(MemorySanitizer, getgrnam_r) {
2042  struct group grp;
2043  struct group *grpres;
2044  char buf[10000];
2045  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2046  assert(!res);
2047  EXPECT_NOT_POISONED(grp.gr_name);
2048  assert(grp.gr_name);
2049  EXPECT_NOT_POISONED(grp.gr_name[0]);
2050  EXPECT_NOT_POISONED(grp.gr_gid);
2051}
2052
2053template<class T>
2054static bool applySlt(T value, T shadow) {
2055  __msan_partial_poison(&value, &shadow, sizeof(T));
2056  volatile bool zzz = true;
2057  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2058  // a shift-and-trunc to get at the highest bit.
2059  volatile bool v = value < 0 || zzz;
2060  return v;
2061}
2062
2063TEST(MemorySanitizer, SignedCompareWithZero) {
2064  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2065  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2066  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2067  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2068  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2069  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2070}
2071
2072template <class T, class S>
2073static T poisoned(T Va, S Sa) {
2074  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2075  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2076  T a;
2077  a = Va;
2078  __msan_partial_poison(&a, &Sa, sizeof(T));
2079  return a;
2080}
2081
2082TEST(MemorySanitizer, ICmpRelational) {
2083  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2084  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2085  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2086  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2087  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2088  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2089                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2090  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2091                  poisoned(-1, 0xFFFFFFFFU));
2092
2093  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2094  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2095  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2096  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2097  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2098  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2099                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2100  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2101                  poisoned(-1, 0xFFFFFFFFU));
2102
2103  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2104  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2105  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2106  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2107  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2108  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2109                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2110  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2111                  poisoned(-1, 0xFFFFFFFFU));
2112
2113  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2114  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2115  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2116  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2117  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2118  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2119                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2120  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2121                  poisoned(-1, 0xFFFFFFFFU));
2122
2123  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2124  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2125
2126  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2127}
2128
2129#if MSAN_HAS_M128
2130TEST(MemorySanitizer, ICmpVectorRelational) {
2131  EXPECT_NOT_POISONED(
2132      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2133                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2134  EXPECT_NOT_POISONED(
2135      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2136                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2137  EXPECT_POISONED(
2138      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2139                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2140  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2141                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2142}
2143#endif
2144
2145// Volatile bitfield store is implemented as load-mask-store
2146// Test that we don't warn on the store of (uninitialized) padding.
2147struct VolatileBitfieldStruct {
2148  volatile unsigned x : 1;
2149  unsigned y : 1;
2150};
2151
2152TEST(MemorySanitizer, VolatileBitfield) {
2153  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2154  S->x = 1;
2155  EXPECT_NOT_POISONED((unsigned)S->x);
2156  EXPECT_POISONED((unsigned)S->y);
2157}
2158
2159TEST(MemorySanitizer, UnalignedLoad) {
2160  char x[32];
2161  memset(x + 8, 0, 16);
2162  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2163  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2164  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2165  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2166  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2167  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2168  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2169
2170  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2171  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2172  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2173  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2174  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2175  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2176  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2177
2178  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2179  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2180  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2181  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2182  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2183  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2184  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2185  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2186  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2187}
2188
2189TEST(MemorySanitizer, UnalignedStore16) {
2190  char x[5];
2191  U2 y = 0;
2192  __msan_poison(&y, 1);
2193  __sanitizer_unaligned_store16(x + 1, y);
2194  EXPECT_POISONED(x[0]);
2195  EXPECT_POISONED(x[1]);
2196  EXPECT_NOT_POISONED(x[2]);
2197  EXPECT_POISONED(x[3]);
2198  EXPECT_POISONED(x[4]);
2199}
2200
2201TEST(MemorySanitizer, UnalignedStore32) {
2202  char x[8];
2203  U4 y4 = 0;
2204  __msan_poison(&y4, 2);
2205  __sanitizer_unaligned_store32(x+3, y4);
2206  EXPECT_POISONED(x[0]);
2207  EXPECT_POISONED(x[1]);
2208  EXPECT_POISONED(x[2]);
2209  EXPECT_POISONED(x[3]);
2210  EXPECT_POISONED(x[4]);
2211  EXPECT_NOT_POISONED(x[5]);
2212  EXPECT_NOT_POISONED(x[6]);
2213  EXPECT_POISONED(x[7]);
2214}
2215
2216TEST(MemorySanitizer, UnalignedStore64) {
2217  char x[16];
2218  U8 y = 0;
2219  __msan_poison(&y, 3);
2220  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2221  __sanitizer_unaligned_store64(x+3, y);
2222  EXPECT_POISONED(x[0]);
2223  EXPECT_POISONED(x[1]);
2224  EXPECT_POISONED(x[2]);
2225  EXPECT_POISONED(x[3]);
2226  EXPECT_POISONED(x[4]);
2227  EXPECT_POISONED(x[5]);
2228  EXPECT_NOT_POISONED(x[6]);
2229  EXPECT_NOT_POISONED(x[7]);
2230  EXPECT_NOT_POISONED(x[8]);
2231  EXPECT_POISONED(x[9]);
2232  EXPECT_NOT_POISONED(x[10]);
2233  EXPECT_POISONED(x[11]);
2234}
2235
2236TEST(MemorySanitizerDr, StoreInDSOTest) {
2237  if (!__msan_has_dynamic_component()) return;
2238  char* s = new char[10];
2239  dso_memfill(s, 9);
2240  EXPECT_NOT_POISONED(s[5]);
2241  EXPECT_POISONED(s[9]);
2242}
2243
2244int return_poisoned_int() {
2245  return ReturnPoisoned<U8>();
2246}
2247
2248TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2249  if (!__msan_has_dynamic_component()) return;
2250  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2251}
2252
2253NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2254  EXPECT_POISONED(x);
2255  EXPECT_POISONED(y);
2256  EXPECT_POISONED(z);
2257  return 0;
2258}
2259
2260static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2261  EXPECT_NOT_POISONED(x);
2262  EXPECT_NOT_POISONED(y);
2263  EXPECT_NOT_POISONED(z);
2264  return 0;
2265}
2266
2267TEST(MemorySanitizerDr, CallFromDSOTest) {
2268  if (!__msan_has_dynamic_component()) return;
2269  S8* x = GetPoisoned<S8>();
2270  S8* y = GetPoisoned<S8>();
2271  S8* z = GetPoisoned<S8>();
2272  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2273  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2274}
2275
2276static void StackStoreInDSOFn(int* x, int* y) {
2277  EXPECT_NOT_POISONED(*x);
2278  EXPECT_NOT_POISONED(*y);
2279}
2280
2281TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2282  if (!__msan_has_dynamic_component()) return;
2283  dso_stack_store(StackStoreInDSOFn, 1);
2284}
2285
2286TEST(MemorySanitizerOrigins, SetGet) {
2287  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2288  if (!TrackingOrigins()) return;
2289  int x;
2290  __msan_set_origin(&x, sizeof(x), 1234);
2291  EXPECT_EQ(1234, __msan_get_origin(&x));
2292  __msan_set_origin(&x, sizeof(x), 5678);
2293  EXPECT_EQ(5678, __msan_get_origin(&x));
2294  __msan_set_origin(&x, sizeof(x), 0);
2295  EXPECT_EQ(0, __msan_get_origin(&x));
2296}
2297
2298namespace {
2299struct S {
2300  U4 dummy;
2301  U2 a;
2302  U2 b;
2303};
2304
2305// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2306TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2307  if (!TrackingOrigins()) return;
2308
2309  S s;
2310  U4 origin = rand();  // NOLINT
2311  s.a = *GetPoisonedO<U2>(0, origin);
2312  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2313  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2314
2315  s.b = 42;
2316  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2317  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2318}
2319}  // namespace
2320
2321template<class T, class BinaryOp>
2322INLINE
2323void BinaryOpOriginTest(BinaryOp op) {
2324  U4 ox = rand();  //NOLINT
2325  U4 oy = rand();  //NOLINT
2326  T *x = GetPoisonedO<T>(0, ox, 0);
2327  T *y = GetPoisonedO<T>(1, oy, 0);
2328  T *z = GetPoisonedO<T>(2, 0, 0);
2329
2330  *z = op(*x, *y);
2331  U4 origin = __msan_get_origin(z);
2332  EXPECT_POISONED_O(*z, origin);
2333  EXPECT_EQ(true, origin == ox || origin == oy);
2334
2335  // y is poisoned, x is not.
2336  *x = 10101;
2337  *y = *GetPoisonedO<T>(1, oy);
2338  break_optimization(x);
2339  __msan_set_origin(z, sizeof(*z), 0);
2340  *z = op(*x, *y);
2341  EXPECT_POISONED_O(*z, oy);
2342  EXPECT_EQ(__msan_get_origin(z), oy);
2343
2344  // x is poisoned, y is not.
2345  *x = *GetPoisonedO<T>(0, ox);
2346  *y = 10101010;
2347  break_optimization(y);
2348  __msan_set_origin(z, sizeof(*z), 0);
2349  *z = op(*x, *y);
2350  EXPECT_POISONED_O(*z, ox);
2351  EXPECT_EQ(__msan_get_origin(z), ox);
2352}
2353
2354template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2355template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2356template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2357template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2358template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2359template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2360
2361TEST(MemorySanitizerOrigins, BinaryOp) {
2362  if (!TrackingOrigins()) return;
2363  BinaryOpOriginTest<S8>(XOR<S8>);
2364  BinaryOpOriginTest<U8>(ADD<U8>);
2365  BinaryOpOriginTest<S4>(SUB<S4>);
2366  BinaryOpOriginTest<S4>(MUL<S4>);
2367  BinaryOpOriginTest<U4>(OR<U4>);
2368  BinaryOpOriginTest<U4>(AND<U4>);
2369  BinaryOpOriginTest<double>(ADD<U4>);
2370  BinaryOpOriginTest<float>(ADD<S4>);
2371  BinaryOpOriginTest<double>(ADD<double>);
2372  BinaryOpOriginTest<float>(ADD<double>);
2373}
2374
2375TEST(MemorySanitizerOrigins, Unary) {
2376  if (!TrackingOrigins()) return;
2377  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2378  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2379  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2380  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2381
2382  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2383  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2384  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2385  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2386
2387  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2388  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2389  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2390  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2391
2392  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2393  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2394  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2395  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2396
2397  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2398  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2399}
2400
2401TEST(MemorySanitizerOrigins, EQ) {
2402  if (!TrackingOrigins()) return;
2403  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2404  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2405  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2406}
2407
2408TEST(MemorySanitizerOrigins, DIV) {
2409  if (!TrackingOrigins()) return;
2410  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2411  unsigned o = __LINE__;
2412  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2413}
2414
2415TEST(MemorySanitizerOrigins, SHIFT) {
2416  if (!TrackingOrigins()) return;
2417  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2418  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2419  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2420  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2421  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2422  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2423}
2424
2425template<class T, int N>
2426void MemCpyTest() {
2427  int ox = __LINE__;
2428  T *x = new T[N];
2429  T *y = new T[N];
2430  T *z = new T[N];
2431  __msan_poison(x, N * sizeof(T));
2432  __msan_set_origin(x, N * sizeof(T), ox);
2433  __msan_set_origin(y, N * sizeof(T), 777777);
2434  __msan_set_origin(z, N * sizeof(T), 888888);
2435  EXPECT_NOT_POISONED(x);
2436  memcpy(y, x, N * sizeof(T));
2437  EXPECT_POISONED_O(y[0], ox);
2438  EXPECT_POISONED_O(y[N/2], ox);
2439  EXPECT_POISONED_O(y[N-1], ox);
2440  EXPECT_NOT_POISONED(x);
2441  memmove(z, x, N * sizeof(T));
2442  EXPECT_POISONED_O(z[0], ox);
2443  EXPECT_POISONED_O(z[N/2], ox);
2444  EXPECT_POISONED_O(z[N-1], ox);
2445}
2446
2447TEST(MemorySanitizerOrigins, LargeMemCpy) {
2448  if (!TrackingOrigins()) return;
2449  MemCpyTest<U1, 10000>();
2450  MemCpyTest<U8, 10000>();
2451}
2452
2453TEST(MemorySanitizerOrigins, SmallMemCpy) {
2454  if (!TrackingOrigins()) return;
2455  MemCpyTest<U8, 1>();
2456  MemCpyTest<U8, 2>();
2457  MemCpyTest<U8, 3>();
2458}
2459
2460TEST(MemorySanitizerOrigins, Select) {
2461  if (!TrackingOrigins()) return;
2462  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2463  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2464  S4 x;
2465  break_optimization(&x);
2466  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2467
2468  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2469  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2470}
2471
2472extern "C"
2473NOINLINE char AllocaTO() {
2474  int ar[100];
2475  break_optimization(ar);
2476  return ar[10];
2477  // fprintf(stderr, "Descr: %s\n",
2478  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2479}
2480
2481TEST(MemorySanitizerOrigins, Alloca) {
2482  if (!TrackingOrigins()) return;
2483  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2484  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2485  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2486  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2487}
2488
2489// FIXME: replace with a lit-like test.
2490TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2491  if (!TrackingOrigins()) return;
2492  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2493}
2494
2495NOINLINE int RetvalOriginTest(U4 origin) {
2496  int *a = new int;
2497  break_optimization(a);
2498  __msan_set_origin(a, sizeof(*a), origin);
2499  int res = *a;
2500  delete a;
2501  return res;
2502}
2503
2504TEST(MemorySanitizerOrigins, Retval) {
2505  if (!TrackingOrigins()) return;
2506  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2507}
2508
2509NOINLINE void ParamOriginTest(int param, U4 origin) {
2510  EXPECT_POISONED_O(param, origin);
2511}
2512
2513TEST(MemorySanitizerOrigins, Param) {
2514  if (!TrackingOrigins()) return;
2515  int *a = new int;
2516  U4 origin = __LINE__;
2517  break_optimization(a);
2518  __msan_set_origin(a, sizeof(*a), origin);
2519  ParamOriginTest(*a, origin);
2520  delete a;
2521}
2522
2523TEST(MemorySanitizerOrigins, Invoke) {
2524  if (!TrackingOrigins()) return;
2525  StructWithDtor s;  // Will cause the calls to become invokes.
2526  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2527}
2528
2529TEST(MemorySanitizerOrigins, strlen) {
2530  S8 alignment;
2531  break_optimization(&alignment);
2532  char x[4] = {'a', 'b', 0, 0};
2533  __msan_poison(&x[2], 1);
2534  U4 origin = __LINE__;
2535  __msan_set_origin(x, sizeof(x), origin);
2536  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2537}
2538
2539TEST(MemorySanitizerOrigins, wcslen) {
2540  wchar_t w[3] = {'a', 'b', 0};
2541  U4 origin = __LINE__;
2542  __msan_set_origin(w, sizeof(w), origin);
2543  __msan_poison(&w[2], sizeof(wchar_t));
2544  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2545}
2546
2547#if MSAN_HAS_M128
2548TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2549  __m128 x, y;
2550  U4 origin = __LINE__;
2551  __msan_set_origin(&x, sizeof(x), origin);
2552  __msan_poison(&x, sizeof(x));
2553  __builtin_ia32_storeups((float*)&y, x);
2554  EXPECT_POISONED_O(y, origin);
2555}
2556#endif
2557
2558NOINLINE void RecursiveMalloc(int depth) {
2559  static int count;
2560  count++;
2561  if ((count % (1024 * 1024)) == 0)
2562    printf("RecursiveMalloc: %d\n", count);
2563  int *x1 = new int;
2564  int *x2 = new int;
2565  break_optimization(x1);
2566  break_optimization(x2);
2567  if (depth > 0) {
2568    RecursiveMalloc(depth-1);
2569    RecursiveMalloc(depth-1);
2570  }
2571  delete x1;
2572  delete x2;
2573}
2574
2575TEST(MemorySanitizer, CallocOverflow) {
2576  size_t kArraySize = 4096;
2577  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2578  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2579  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2580  EXPECT_EQ(0L, Ident(p));
2581}
2582
2583TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2584  RecursiveMalloc(22);
2585}
2586