msan_test.cc revision 4bbbe136fe6a19a8288a6d92af29075756dd8fa5 
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
757TEST(MemorySanitizer, getnameinfo) {
758  struct sockaddr_in sai;
759  sai.sin_family = AF_INET;
760  sai.sin_port = 80;
761  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
762  char host[500];
763  char serv[500];
764  int res = getnameinfo((struct sockaddr *)&sai, sizeof(sai), host,
765                        sizeof(host), serv, sizeof(serv), 0);
766  ASSERT_EQ(0, res);
767  EXPECT_NOT_POISONED(host[0]);
768  EXPECT_POISONED(host[sizeof(host) - 1]);
769
770  ASSERT_NE(0, strlen(host));
771  EXPECT_NOT_POISONED(serv[0]);
772  EXPECT_POISONED(serv[sizeof(serv) - 1]);
773  ASSERT_NE(0, strlen(serv));
774}
775
776#define EXPECT_HOSTENT_NOT_POISONED(he)        \
777  do {                                         \
778    EXPECT_NOT_POISONED(*(he));                \
779    ASSERT_NE((void *) 0, (he)->h_name);       \
780    ASSERT_NE((void *) 0, (he)->h_aliases);    \
781    ASSERT_NE((void *) 0, (he)->h_addr_list);  \
782    EXPECT_NOT_POISONED(strlen((he)->h_name)); \
783    char **p = (he)->h_aliases;                \
784    while (*p) {                               \
785      EXPECT_NOT_POISONED(strlen(*p));         \
786      ++p;                                     \
787    }                                          \
788    char **q = (he)->h_addr_list;              \
789    while (*q) {                               \
790      EXPECT_NOT_POISONED(*q[0]);              \
791      ++q;                                     \
792    }                                          \
793    EXPECT_NOT_POISONED(*q);                   \
794  } while (0)
795
796TEST(MemorySanitizer, gethostent) {
797  struct hostent *he = gethostent();
798  ASSERT_NE((void *)NULL, he);
799  EXPECT_HOSTENT_NOT_POISONED(he);
800}
801
802#ifndef MSAN_TEST_DISABLE_GETHOSTBYNAME
803
804TEST(MemorySanitizer, gethostbyname) {
805  struct hostent *he = gethostbyname("localhost");
806  ASSERT_NE((void *)NULL, he);
807  EXPECT_HOSTENT_NOT_POISONED(he);
808}
809
810#endif // MSAN_TEST_DISABLE_GETHOSTBYNAME
811
812TEST(MemorySanitizer, gethostbyname2) {
813  struct hostent *he = gethostbyname2("localhost", AF_INET);
814  ASSERT_NE((void *)NULL, he);
815  EXPECT_HOSTENT_NOT_POISONED(he);
816}
817
818TEST(MemorySanitizer, gethostbyaddr) {
819  in_addr_t addr = inet_addr("127.0.0.1");
820  EXPECT_NOT_POISONED(addr);
821  struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
822  ASSERT_NE((void *)NULL, he);
823  EXPECT_HOSTENT_NOT_POISONED(he);
824}
825
826TEST(MemorySanitizer, gethostent_r) {
827  char buf[2000];
828  struct hostent he;
829  struct hostent *result;
830  int err;
831  int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
832  ASSERT_EQ(0, res);
833  EXPECT_NOT_POISONED(result);
834  ASSERT_NE((void *)NULL, result);
835  EXPECT_HOSTENT_NOT_POISONED(result);
836  EXPECT_NOT_POISONED(err);
837}
838
839TEST(MemorySanitizer, gethostbyname_r) {
840  char buf[2000];
841  struct hostent he;
842  struct hostent *result;
843  int err;
844  int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
845  ASSERT_EQ(0, res);
846  EXPECT_NOT_POISONED(result);
847  ASSERT_NE((void *)NULL, result);
848  EXPECT_HOSTENT_NOT_POISONED(result);
849  EXPECT_NOT_POISONED(err);
850}
851
852TEST(MemorySanitizer, gethostbyname2_r) {
853  char buf[2000];
854  struct hostent he;
855  struct hostent *result;
856  int err;
857  int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
858                             &result, &err);
859  ASSERT_EQ(0, res);
860  EXPECT_NOT_POISONED(result);
861  ASSERT_NE((void *)NULL, result);
862  EXPECT_HOSTENT_NOT_POISONED(result);
863  EXPECT_NOT_POISONED(err);
864}
865
866TEST(MemorySanitizer, gethostbyaddr_r) {
867  char buf[2000];
868  struct hostent he;
869  struct hostent *result;
870  int err;
871  in_addr_t addr = inet_addr("127.0.0.1");
872  EXPECT_NOT_POISONED(addr);
873  int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
874                            &result, &err);
875  ASSERT_EQ(0, res);
876  EXPECT_NOT_POISONED(result);
877  ASSERT_NE((void *)NULL, result);
878  EXPECT_HOSTENT_NOT_POISONED(result);
879  EXPECT_NOT_POISONED(err);
880}
881
882TEST(MemorySanitizer, getsockopt) {
883  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
884  struct linger l[2];
885  socklen_t sz = sizeof(l[0]);
886  int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
887  ASSERT_EQ(0, res);
888  ASSERT_EQ(sizeof(l[0]), sz);
889  EXPECT_NOT_POISONED(l[0]);
890  EXPECT_POISONED(*(char *)(l + 1));
891}
892
893TEST(MemorySanitizer, getcwd) {
894  char path[PATH_MAX + 1];
895  char* res = getcwd(path, sizeof(path));
896  assert(res);
897  EXPECT_NOT_POISONED(path[0]);
898}
899
900TEST(MemorySanitizer, getcwd_gnu) {
901  char* res = getcwd(NULL, 0);
902  assert(res);
903  EXPECT_NOT_POISONED(res[0]);
904  free(res);
905}
906
907TEST(MemorySanitizer, readdir) {
908  DIR *dir = opendir(".");
909  struct dirent *d = readdir(dir);
910  assert(d);
911  EXPECT_NOT_POISONED(d->d_name[0]);
912  closedir(dir);
913}
914
915TEST(MemorySanitizer, readdir_r) {
916  DIR *dir = opendir(".");
917  struct dirent d;
918  struct dirent *pd;
919  int res = readdir_r(dir, &d, &pd);
920  assert(!res);
921  EXPECT_NOT_POISONED(pd);
922  EXPECT_NOT_POISONED(d.d_name[0]);
923  closedir(dir);
924}
925
926TEST(MemorySanitizer, realpath) {
927  const char* relpath = ".";
928  char path[PATH_MAX + 1];
929  char* res = realpath(relpath, path);
930  assert(res);
931  EXPECT_NOT_POISONED(path[0]);
932}
933
934TEST(MemorySanitizer, memcpy) {
935  char* x = new char[2];
936  char* y = new char[2];
937  x[0] = 1;
938  x[1] = *GetPoisoned<char>();
939  memcpy(y, x, 2);
940  EXPECT_NOT_POISONED(y[0]);
941  EXPECT_POISONED(y[1]);
942}
943
944TEST(MemorySanitizer, memmove) {
945  char* x = new char[2];
946  char* y = new char[2];
947  x[0] = 1;
948  x[1] = *GetPoisoned<char>();
949  memmove(y, x, 2);
950  EXPECT_NOT_POISONED(y[0]);
951  EXPECT_POISONED(y[1]);
952}
953
954TEST(MemorySanitizer, strdup) {
955  char buf[4] = "abc";
956  __msan_poison(buf + 2, sizeof(*buf));
957  char *x = strdup(buf);
958  EXPECT_NOT_POISONED(x[0]);
959  EXPECT_NOT_POISONED(x[1]);
960  EXPECT_POISONED(x[2]);
961  EXPECT_NOT_POISONED(x[3]);
962  free(x);
963}
964
965TEST(MemorySanitizer, strndup) {
966  char buf[4] = "abc";
967  __msan_poison(buf + 2, sizeof(*buf));
968  char *x = strndup(buf, 3);
969  EXPECT_NOT_POISONED(x[0]);
970  EXPECT_NOT_POISONED(x[1]);
971  EXPECT_POISONED(x[2]);
972  EXPECT_NOT_POISONED(x[3]);
973  free(x);
974}
975
976TEST(MemorySanitizer, strndup_short) {
977  char buf[4] = "abc";
978  __msan_poison(buf + 1, sizeof(*buf));
979  __msan_poison(buf + 2, sizeof(*buf));
980  char *x = strndup(buf, 2);
981  EXPECT_NOT_POISONED(x[0]);
982  EXPECT_POISONED(x[1]);
983  EXPECT_NOT_POISONED(x[2]);
984  free(x);
985}
986
987
988template<class T, int size>
989void TestOverlapMemmove() {
990  T *x = new T[size];
991  assert(size >= 3);
992  x[2] = 0;
993  memmove(x, x + 1, (size - 1) * sizeof(T));
994  EXPECT_NOT_POISONED(x[1]);
995  if (!__msan_has_dynamic_component()) {
996    // FIXME: under DR we will lose this information
997    // because accesses in memmove will unpoisin the shadow.
998    // We need to use our own memove implementation instead of libc's.
999    EXPECT_POISONED(x[0]);
1000    EXPECT_POISONED(x[2]);
1001  }
1002  delete [] x;
1003}
1004
1005TEST(MemorySanitizer, overlap_memmove) {
1006  TestOverlapMemmove<U1, 10>();
1007  TestOverlapMemmove<U1, 1000>();
1008  TestOverlapMemmove<U8, 4>();
1009  TestOverlapMemmove<U8, 1000>();
1010}
1011
1012TEST(MemorySanitizer, strcpy) {  // NOLINT
1013  char* x = new char[3];
1014  char* y = new char[3];
1015  x[0] = 'a';
1016  x[1] = *GetPoisoned<char>(1, 1);
1017  x[2] = 0;
1018  strcpy(y, x);  // NOLINT
1019  EXPECT_NOT_POISONED(y[0]);
1020  EXPECT_POISONED(y[1]);
1021  EXPECT_NOT_POISONED(y[2]);
1022}
1023
1024TEST(MemorySanitizer, strncpy) {  // NOLINT
1025  char* x = new char[3];
1026  char* y = new char[3];
1027  x[0] = 'a';
1028  x[1] = *GetPoisoned<char>(1, 1);
1029  x[2] = 0;
1030  strncpy(y, x, 2);  // NOLINT
1031  EXPECT_NOT_POISONED(y[0]);
1032  EXPECT_POISONED(y[1]);
1033  EXPECT_POISONED(y[2]);
1034}
1035
1036TEST(MemorySanitizer, stpcpy) {  // NOLINT
1037  char* x = new char[3];
1038  char* y = new char[3];
1039  x[0] = 'a';
1040  x[1] = *GetPoisoned<char>(1, 1);
1041  x[2] = 0;
1042  char *res = stpcpy(y, x);  // NOLINT
1043  ASSERT_EQ(res, y + 2);
1044  EXPECT_NOT_POISONED(y[0]);
1045  EXPECT_POISONED(y[1]);
1046  EXPECT_NOT_POISONED(y[2]);
1047}
1048
1049TEST(MemorySanitizer, strtol) {
1050  char *e;
1051  assert(1 == strtol("1", &e, 10));
1052  EXPECT_NOT_POISONED((S8) e);
1053}
1054
1055TEST(MemorySanitizer, strtoll) {
1056  char *e;
1057  assert(1 == strtoll("1", &e, 10));
1058  EXPECT_NOT_POISONED((S8) e);
1059}
1060
1061TEST(MemorySanitizer, strtoul) {
1062  char *e;
1063  assert(1 == strtoul("1", &e, 10));
1064  EXPECT_NOT_POISONED((S8) e);
1065}
1066
1067TEST(MemorySanitizer, strtoull) {
1068  char *e;
1069  assert(1 == strtoull("1", &e, 10));
1070  EXPECT_NOT_POISONED((S8) e);
1071}
1072
1073TEST(MemorySanitizer, strtod) {
1074  char *e;
1075  assert(0 != strtod("1.5", &e));
1076  EXPECT_NOT_POISONED((S8) e);
1077}
1078
1079TEST(MemorySanitizer, strtof) {
1080  char *e;
1081  assert(0 != strtof("1.5", &e));
1082  EXPECT_NOT_POISONED((S8) e);
1083}
1084
1085TEST(MemorySanitizer, strtold) {
1086  char *e;
1087  assert(0 != strtold("1.5", &e));
1088  EXPECT_NOT_POISONED((S8) e);
1089}
1090
1091TEST(MemorySanitizer, modf) {
1092  double x, y;
1093  x = modf(2.1, &y);
1094  EXPECT_NOT_POISONED(y);
1095}
1096
1097TEST(MemorySanitizer, modff) {
1098  float x, y;
1099  x = modff(2.1, &y);
1100  EXPECT_NOT_POISONED(y);
1101}
1102
1103TEST(MemorySanitizer, modfl) {
1104  long double x, y;
1105  x = modfl(2.1, &y);
1106  EXPECT_NOT_POISONED(y);
1107}
1108
1109TEST(MemorySanitizer, sprintf) {  // NOLINT
1110  char buff[10];
1111  break_optimization(buff);
1112  EXPECT_POISONED(buff[0]);
1113  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1114  assert(res == 7);
1115  assert(buff[0] == '1');
1116  assert(buff[1] == '2');
1117  assert(buff[2] == '3');
1118  assert(buff[6] == '7');
1119  assert(buff[7] == 0);
1120  EXPECT_POISONED(buff[8]);
1121}
1122
1123TEST(MemorySanitizer, snprintf) {
1124  char buff[10];
1125  break_optimization(buff);
1126  EXPECT_POISONED(buff[0]);
1127  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1128  assert(res == 7);
1129  assert(buff[0] == '1');
1130  assert(buff[1] == '2');
1131  assert(buff[2] == '3');
1132  assert(buff[6] == '7');
1133  assert(buff[7] == 0);
1134  EXPECT_POISONED(buff[8]);
1135}
1136
1137TEST(MemorySanitizer, swprintf) {
1138  wchar_t buff[10];
1139  assert(sizeof(wchar_t) == 4);
1140  break_optimization(buff);
1141  EXPECT_POISONED(buff[0]);
1142  int res = swprintf(buff, 9, L"%d", 1234567);
1143  assert(res == 7);
1144  assert(buff[0] == '1');
1145  assert(buff[1] == '2');
1146  assert(buff[2] == '3');
1147  assert(buff[6] == '7');
1148  assert(buff[7] == 0);
1149  EXPECT_POISONED(buff[8]);
1150}
1151
1152TEST(MemorySanitizer, asprintf) {  // NOLINT
1153  char *pbuf;
1154  EXPECT_POISONED(pbuf);
1155  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1156  assert(res == 7);
1157  EXPECT_NOT_POISONED(pbuf);
1158  assert(pbuf[0] == '1');
1159  assert(pbuf[1] == '2');
1160  assert(pbuf[2] == '3');
1161  assert(pbuf[6] == '7');
1162  assert(pbuf[7] == 0);
1163  free(pbuf);
1164}
1165
1166TEST(MemorySanitizer, wcstombs) {
1167  const wchar_t *x = L"abc";
1168  char buff[10];
1169  int res = wcstombs(buff, x, 4);
1170  EXPECT_EQ(res, 3);
1171  EXPECT_EQ(buff[0], 'a');
1172  EXPECT_EQ(buff[1], 'b');
1173  EXPECT_EQ(buff[2], 'c');
1174}
1175
1176TEST(MemorySanitizer, gettimeofday) {
1177  struct timeval tv;
1178  struct timezone tz;
1179  break_optimization(&tv);
1180  break_optimization(&tz);
1181  assert(sizeof(tv) == 16);
1182  assert(sizeof(tz) == 8);
1183  EXPECT_POISONED(tv.tv_sec);
1184  EXPECT_POISONED(tv.tv_usec);
1185  EXPECT_POISONED(tz.tz_minuteswest);
1186  EXPECT_POISONED(tz.tz_dsttime);
1187  assert(0 == gettimeofday(&tv, &tz));
1188  EXPECT_NOT_POISONED(tv.tv_sec);
1189  EXPECT_NOT_POISONED(tv.tv_usec);
1190  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1191  EXPECT_NOT_POISONED(tz.tz_dsttime);
1192}
1193
1194TEST(MemorySanitizer, clock_gettime) {
1195  struct timespec tp;
1196  EXPECT_POISONED(tp.tv_sec);
1197  EXPECT_POISONED(tp.tv_nsec);
1198  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1199  EXPECT_NOT_POISONED(tp.tv_sec);
1200  EXPECT_NOT_POISONED(tp.tv_nsec);
1201}
1202
1203TEST(MemorySanitizer, clock_getres) {
1204  struct timespec tp;
1205  EXPECT_POISONED(tp.tv_sec);
1206  EXPECT_POISONED(tp.tv_nsec);
1207  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1208  EXPECT_POISONED(tp.tv_sec);
1209  EXPECT_POISONED(tp.tv_nsec);
1210  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1211  EXPECT_NOT_POISONED(tp.tv_sec);
1212  EXPECT_NOT_POISONED(tp.tv_nsec);
1213}
1214
1215TEST(MemorySanitizer, getitimer) {
1216  struct itimerval it1, it2;
1217  int res;
1218  EXPECT_POISONED(it1.it_interval.tv_sec);
1219  EXPECT_POISONED(it1.it_interval.tv_usec);
1220  EXPECT_POISONED(it1.it_value.tv_sec);
1221  EXPECT_POISONED(it1.it_value.tv_usec);
1222  res = getitimer(ITIMER_VIRTUAL, &it1);
1223  assert(!res);
1224  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1225  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1226  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1227  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1228
1229  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1230  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1231
1232  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1233  assert(!res);
1234  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1235  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1236  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1237  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1238
1239  // Check that old_value can be 0, and disable the timer.
1240  memset(&it1, 0, sizeof(it1));
1241  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1242  assert(!res);
1243}
1244
1245TEST(MemorySanitizer, time) {
1246  time_t t;
1247  EXPECT_POISONED(t);
1248  time_t t2 = time(&t);
1249  assert(t2 != (time_t)-1);
1250  EXPECT_NOT_POISONED(t);
1251}
1252
1253TEST(MemorySanitizer, localtime) {
1254  time_t t = 123;
1255  struct tm *time = localtime(&t);
1256  assert(time != 0);
1257  EXPECT_NOT_POISONED(time->tm_sec);
1258  EXPECT_NOT_POISONED(time->tm_hour);
1259  EXPECT_NOT_POISONED(time->tm_year);
1260  EXPECT_NOT_POISONED(time->tm_isdst);
1261}
1262
1263TEST(MemorySanitizer, localtime_r) {
1264  time_t t = 123;
1265  struct tm time;
1266  struct tm *res = localtime_r(&t, &time);
1267  assert(res != 0);
1268  EXPECT_NOT_POISONED(time.tm_sec);
1269  EXPECT_NOT_POISONED(time.tm_hour);
1270  EXPECT_NOT_POISONED(time.tm_year);
1271  EXPECT_NOT_POISONED(time.tm_isdst);
1272}
1273
1274TEST(MemorySanitizer, mmap) {
1275  const int size = 4096;
1276  void *p1, *p2;
1277  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1278  __msan_poison(p1, size);
1279  munmap(p1, size);
1280  for (int i = 0; i < 1000; i++) {
1281    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1282    if (p2 == p1)
1283      break;
1284    else
1285      munmap(p2, size);
1286  }
1287  if (p1 == p2) {
1288    EXPECT_NOT_POISONED(*(char*)p2);
1289    munmap(p2, size);
1290  }
1291}
1292
1293// FIXME: enable and add ecvt.
1294// FIXME: check why msandr does nt handle fcvt.
1295TEST(MemorySanitizer, fcvt) {
1296  int a, b;
1297  break_optimization(&a);
1298  break_optimization(&b);
1299  EXPECT_POISONED(a);
1300  EXPECT_POISONED(b);
1301  char *str = fcvt(12345.6789, 10, &a, &b);
1302  EXPECT_NOT_POISONED(a);
1303  EXPECT_NOT_POISONED(b);
1304}
1305
1306TEST(MemorySanitizer, frexp) {
1307  int x;
1308  x = *GetPoisoned<int>();
1309  double r = frexp(1.1, &x);
1310  EXPECT_NOT_POISONED(r);
1311  EXPECT_NOT_POISONED(x);
1312
1313  x = *GetPoisoned<int>();
1314  float rf = frexpf(1.1, &x);
1315  EXPECT_NOT_POISONED(rf);
1316  EXPECT_NOT_POISONED(x);
1317
1318  x = *GetPoisoned<int>();
1319  double rl = frexpl(1.1, &x);
1320  EXPECT_NOT_POISONED(rl);
1321  EXPECT_NOT_POISONED(x);
1322}
1323
1324namespace {
1325
1326static int cnt;
1327
1328void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1329  assert(signo == SIGPROF);
1330  assert(si);
1331  EXPECT_NOT_POISONED(si->si_errno);
1332  EXPECT_NOT_POISONED(si->si_pid);
1333#if __linux__
1334# if defined(__x86_64__)
1335  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1336# elif defined(__i386__)
1337  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1338# endif
1339#endif
1340  ++cnt;
1341}
1342
1343TEST(MemorySanitizer, sigaction) {
1344  struct sigaction act = {};
1345  struct sigaction oldact = {};
1346  struct sigaction origact = {};
1347
1348  sigaction(SIGPROF, 0, &origact);
1349
1350  act.sa_flags |= SA_SIGINFO;
1351  act.sa_sigaction = &SigactionHandler;
1352  sigaction(SIGPROF, &act, 0);
1353
1354  kill(getpid(), SIGPROF);
1355
1356  act.sa_flags &= ~SA_SIGINFO;
1357  act.sa_handler = SIG_DFL;
1358  sigaction(SIGPROF, &act, 0);
1359
1360  act.sa_flags &= ~SA_SIGINFO;
1361  act.sa_handler = SIG_IGN;
1362  sigaction(SIGPROF, &act, &oldact);
1363  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1364  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1365  kill(getpid(), SIGPROF);
1366
1367  act.sa_flags |= SA_SIGINFO;
1368  act.sa_sigaction = &SigactionHandler;
1369  sigaction(SIGPROF, &act, &oldact);
1370  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1371  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1372  kill(getpid(), SIGPROF);
1373
1374  act.sa_flags &= ~SA_SIGINFO;
1375  act.sa_handler = SIG_DFL;
1376  sigaction(SIGPROF, &act, &oldact);
1377  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1378  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1379  EXPECT_EQ(2, cnt);
1380
1381  sigaction(SIGPROF, &origact, 0);
1382}
1383
1384} // namespace
1385
1386struct StructWithDtor {
1387  ~StructWithDtor();
1388};
1389
1390NOINLINE StructWithDtor::~StructWithDtor() {
1391  break_optimization(0);
1392}
1393
1394TEST(MemorySanitizer, Invoke) {
1395  StructWithDtor s;  // Will cause the calls to become invokes.
1396  EXPECT_NOT_POISONED(0);
1397  EXPECT_POISONED(*GetPoisoned<int>());
1398  EXPECT_NOT_POISONED(0);
1399  EXPECT_POISONED(*GetPoisoned<int>());
1400  EXPECT_POISONED(ReturnPoisoned<S4>());
1401}
1402
1403TEST(MemorySanitizer, ptrtoint) {
1404  // Test that shadow is propagated through pointer-to-integer conversion.
1405  void* p = (void*)0xABCD;
1406  __msan_poison(((char*)&p) + 1, sizeof(p));
1407  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1408
1409  void* q = (void*)0xABCD;
1410  __msan_poison(&q, sizeof(q) - 1);
1411  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1412}
1413
1414static void vaargsfn2(int guard, ...) {
1415  va_list vl;
1416  va_start(vl, guard);
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_POISONED(va_arg(vl, double));
1421  va_end(vl);
1422}
1423
1424static void vaargsfn(int guard, ...) {
1425  va_list vl;
1426  va_start(vl, guard);
1427  EXPECT_NOT_POISONED(va_arg(vl, int));
1428  EXPECT_POISONED(va_arg(vl, int));
1429  // The following call will overwrite __msan_param_tls.
1430  // Checks after it test that arg shadow was somehow saved across the call.
1431  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1432  EXPECT_NOT_POISONED(va_arg(vl, int));
1433  EXPECT_POISONED(va_arg(vl, int));
1434  va_end(vl);
1435}
1436
1437TEST(MemorySanitizer, VAArgTest) {
1438  int* x = GetPoisoned<int>();
1439  int* y = GetPoisoned<int>(4);
1440  vaargsfn(1, 13, *x, 42, *y);
1441}
1442
1443static void vaargsfn_many(int guard, ...) {
1444  va_list vl;
1445  va_start(vl, guard);
1446  EXPECT_NOT_POISONED(va_arg(vl, int));
1447  EXPECT_POISONED(va_arg(vl, int));
1448  EXPECT_NOT_POISONED(va_arg(vl, int));
1449  EXPECT_NOT_POISONED(va_arg(vl, int));
1450  EXPECT_NOT_POISONED(va_arg(vl, int));
1451  EXPECT_NOT_POISONED(va_arg(vl, int));
1452  EXPECT_NOT_POISONED(va_arg(vl, int));
1453  EXPECT_NOT_POISONED(va_arg(vl, int));
1454  EXPECT_NOT_POISONED(va_arg(vl, int));
1455  EXPECT_POISONED(va_arg(vl, int));
1456  va_end(vl);
1457}
1458
1459TEST(MemorySanitizer, VAArgManyTest) {
1460  int* x = GetPoisoned<int>();
1461  int* y = GetPoisoned<int>(4);
1462  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1463}
1464
1465static void vaargsfn_pass2(va_list vl) {
1466  EXPECT_NOT_POISONED(va_arg(vl, int));
1467  EXPECT_NOT_POISONED(va_arg(vl, int));
1468  EXPECT_POISONED(va_arg(vl, int));
1469}
1470
1471static void vaargsfn_pass(int guard, ...) {
1472  va_list vl;
1473  va_start(vl, guard);
1474  EXPECT_POISONED(va_arg(vl, int));
1475  vaargsfn_pass2(vl);
1476  va_end(vl);
1477}
1478
1479TEST(MemorySanitizer, VAArgPass) {
1480  int* x = GetPoisoned<int>();
1481  int* y = GetPoisoned<int>(4);
1482  vaargsfn_pass(1, *x, 2, 3, *y);
1483}
1484
1485static void vaargsfn_copy2(va_list vl) {
1486  EXPECT_NOT_POISONED(va_arg(vl, int));
1487  EXPECT_POISONED(va_arg(vl, int));
1488}
1489
1490static void vaargsfn_copy(int guard, ...) {
1491  va_list vl;
1492  va_start(vl, guard);
1493  EXPECT_NOT_POISONED(va_arg(vl, int));
1494  EXPECT_POISONED(va_arg(vl, int));
1495  va_list vl2;
1496  va_copy(vl2, vl);
1497  vaargsfn_copy2(vl2);
1498  EXPECT_NOT_POISONED(va_arg(vl, int));
1499  EXPECT_POISONED(va_arg(vl, int));
1500  va_end(vl);
1501}
1502
1503TEST(MemorySanitizer, VAArgCopy) {
1504  int* x = GetPoisoned<int>();
1505  int* y = GetPoisoned<int>(4);
1506  vaargsfn_copy(1, 2, *x, 3, *y);
1507}
1508
1509static void vaargsfn_ptr(int guard, ...) {
1510  va_list vl;
1511  va_start(vl, guard);
1512  EXPECT_NOT_POISONED(va_arg(vl, int*));
1513  EXPECT_POISONED(va_arg(vl, int*));
1514  EXPECT_NOT_POISONED(va_arg(vl, int*));
1515  EXPECT_POISONED(va_arg(vl, double*));
1516  va_end(vl);
1517}
1518
1519TEST(MemorySanitizer, VAArgPtr) {
1520  int** x = GetPoisoned<int*>();
1521  double** y = GetPoisoned<double*>(8);
1522  int z;
1523  vaargsfn_ptr(1, &z, *x, &z, *y);
1524}
1525
1526static void vaargsfn_overflow(int guard, ...) {
1527  va_list vl;
1528  va_start(vl, guard);
1529  EXPECT_NOT_POISONED(va_arg(vl, int));
1530  EXPECT_NOT_POISONED(va_arg(vl, int));
1531  EXPECT_POISONED(va_arg(vl, int));
1532  EXPECT_NOT_POISONED(va_arg(vl, int));
1533  EXPECT_NOT_POISONED(va_arg(vl, int));
1534  EXPECT_NOT_POISONED(va_arg(vl, int));
1535
1536  EXPECT_NOT_POISONED(va_arg(vl, double));
1537  EXPECT_NOT_POISONED(va_arg(vl, double));
1538  EXPECT_NOT_POISONED(va_arg(vl, double));
1539  EXPECT_POISONED(va_arg(vl, double));
1540  EXPECT_NOT_POISONED(va_arg(vl, double));
1541  EXPECT_POISONED(va_arg(vl, int*));
1542  EXPECT_NOT_POISONED(va_arg(vl, double));
1543  EXPECT_NOT_POISONED(va_arg(vl, double));
1544
1545  EXPECT_POISONED(va_arg(vl, int));
1546  EXPECT_POISONED(va_arg(vl, double));
1547  EXPECT_POISONED(va_arg(vl, int*));
1548
1549  EXPECT_NOT_POISONED(va_arg(vl, int));
1550  EXPECT_NOT_POISONED(va_arg(vl, double));
1551  EXPECT_NOT_POISONED(va_arg(vl, int*));
1552
1553  EXPECT_POISONED(va_arg(vl, int));
1554  EXPECT_POISONED(va_arg(vl, double));
1555  EXPECT_POISONED(va_arg(vl, int*));
1556
1557  va_end(vl);
1558}
1559
1560TEST(MemorySanitizer, VAArgOverflow) {
1561  int* x = GetPoisoned<int>();
1562  double* y = GetPoisoned<double>(8);
1563  int** p = GetPoisoned<int*>(16);
1564  int z;
1565  vaargsfn_overflow(1,
1566      1, 2, *x, 4, 5, 6,
1567      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1568      // the following args will overflow for sure
1569      *x, *y, *p,
1570      7, 9.9, &z,
1571      *x, *y, *p);
1572}
1573
1574static void vaargsfn_tlsoverwrite2(int guard, ...) {
1575  va_list vl;
1576  va_start(vl, guard);
1577  EXPECT_NOT_POISONED(va_arg(vl, int));
1578  va_end(vl);
1579}
1580
1581static void vaargsfn_tlsoverwrite(int guard, ...) {
1582  // This call will overwrite TLS contents unless it's backed up somewhere.
1583  vaargsfn_tlsoverwrite2(2, 42);
1584  va_list vl;
1585  va_start(vl, guard);
1586  EXPECT_POISONED(va_arg(vl, int));
1587  va_end(vl);
1588}
1589
1590TEST(MemorySanitizer, VAArgTLSOverwrite) {
1591  int* x = GetPoisoned<int>();
1592  vaargsfn_tlsoverwrite(1, *x);
1593}
1594
1595struct StructByVal {
1596  int a, b, c, d, e, f;
1597};
1598
1599NOINLINE void StructByValTestFunc(struct StructByVal s) {
1600  EXPECT_NOT_POISONED(s.a);
1601  EXPECT_POISONED(s.b);
1602  EXPECT_NOT_POISONED(s.c);
1603  EXPECT_POISONED(s.d);
1604  EXPECT_NOT_POISONED(s.e);
1605  EXPECT_POISONED(s.f);
1606}
1607
1608NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1609  StructByValTestFunc(s);
1610}
1611
1612NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1613  StructByValTestFunc(s);
1614}
1615
1616TEST(MemorySanitizer, StructByVal) {
1617  // Large aggregates are passed as "byval" pointer argument in LLVM.
1618  struct StructByVal s;
1619  s.a = 1;
1620  s.b = *GetPoisoned<int>();
1621  s.c = 2;
1622  s.d = *GetPoisoned<int>();
1623  s.e = 3;
1624  s.f = *GetPoisoned<int>();
1625  StructByValTestFunc(s);
1626  StructByValTestFunc1(s);
1627  StructByValTestFunc2(0, s);
1628}
1629
1630
1631#if MSAN_HAS_M128
1632NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1633NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1634TEST(MemorySanitizer, m128) {
1635  __m128i a = _mm_set1_epi16(0x1234);
1636  __m128i b = _mm_set1_epi16(0x7890);
1637  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1638  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1639}
1640// FIXME: add more tests for __m128i.
1641#endif  // MSAN_HAS_M128
1642
1643// We should not complain when copying this poisoned hole.
1644struct StructWithHole {
1645  U4  a;
1646  // 4-byte hole.
1647  U8  b;
1648};
1649
1650NOINLINE StructWithHole ReturnStructWithHole() {
1651  StructWithHole res;
1652  __msan_poison(&res, sizeof(res));
1653  res.a = 1;
1654  res.b = 2;
1655  return res;
1656}
1657
1658TEST(MemorySanitizer, StructWithHole) {
1659  StructWithHole a = ReturnStructWithHole();
1660  break_optimization(&a);
1661}
1662
1663template <class T>
1664NOINLINE T ReturnStruct() {
1665  T res;
1666  __msan_poison(&res, sizeof(res));
1667  res.a = 1;
1668  return res;
1669}
1670
1671template <class T>
1672NOINLINE void TestReturnStruct() {
1673  T s1 = ReturnStruct<T>();
1674  EXPECT_NOT_POISONED(s1.a);
1675  EXPECT_POISONED(s1.b);
1676}
1677
1678struct SSS1 {
1679  int a, b, c;
1680};
1681struct SSS2 {
1682  int b, a, c;
1683};
1684struct SSS3 {
1685  int b, c, a;
1686};
1687struct SSS4 {
1688  int c, b, a;
1689};
1690
1691struct SSS5 {
1692  int a;
1693  float b;
1694};
1695struct SSS6 {
1696  int a;
1697  double b;
1698};
1699struct SSS7 {
1700  S8 b;
1701  int a;
1702};
1703struct SSS8 {
1704  S2 b;
1705  S8 a;
1706};
1707
1708TEST(MemorySanitizer, IntStruct3) {
1709  TestReturnStruct<SSS1>();
1710  TestReturnStruct<SSS2>();
1711  TestReturnStruct<SSS3>();
1712  TestReturnStruct<SSS4>();
1713  TestReturnStruct<SSS5>();
1714  TestReturnStruct<SSS6>();
1715  TestReturnStruct<SSS7>();
1716  TestReturnStruct<SSS8>();
1717}
1718
1719struct LongStruct {
1720  U1 a1, b1;
1721  U2 a2, b2;
1722  U4 a4, b4;
1723  U8 a8, b8;
1724};
1725
1726NOINLINE LongStruct ReturnLongStruct1() {
1727  LongStruct res;
1728  __msan_poison(&res, sizeof(res));
1729  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1730  // leaves b1, .., b8 poisoned.
1731  return res;
1732}
1733
1734NOINLINE LongStruct ReturnLongStruct2() {
1735  LongStruct res;
1736  __msan_poison(&res, sizeof(res));
1737  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1738  // leaves a1, .., a8 poisoned.
1739  return res;
1740}
1741
1742TEST(MemorySanitizer, LongStruct) {
1743  LongStruct s1 = ReturnLongStruct1();
1744  __msan_print_shadow(&s1, sizeof(s1));
1745  EXPECT_NOT_POISONED(s1.a1);
1746  EXPECT_NOT_POISONED(s1.a2);
1747  EXPECT_NOT_POISONED(s1.a4);
1748  EXPECT_NOT_POISONED(s1.a8);
1749
1750  EXPECT_POISONED(s1.b1);
1751  EXPECT_POISONED(s1.b2);
1752  EXPECT_POISONED(s1.b4);
1753  EXPECT_POISONED(s1.b8);
1754
1755  LongStruct s2 = ReturnLongStruct2();
1756  __msan_print_shadow(&s2, sizeof(s2));
1757  EXPECT_NOT_POISONED(s2.b1);
1758  EXPECT_NOT_POISONED(s2.b2);
1759  EXPECT_NOT_POISONED(s2.b4);
1760  EXPECT_NOT_POISONED(s2.b8);
1761
1762  EXPECT_POISONED(s2.a1);
1763  EXPECT_POISONED(s2.a2);
1764  EXPECT_POISONED(s2.a4);
1765  EXPECT_POISONED(s2.a8);
1766}
1767
1768TEST(MemorySanitizer, getrlimit) {
1769  struct rlimit limit;
1770  __msan_poison(&limit, sizeof(limit));
1771  int result = getrlimit(RLIMIT_DATA, &limit);
1772  assert(result == 0);
1773  EXPECT_NOT_POISONED(limit.rlim_cur);
1774  EXPECT_NOT_POISONED(limit.rlim_max);
1775}
1776
1777TEST(MemorySanitizer, getrusage) {
1778  struct rusage usage;
1779  __msan_poison(&usage, sizeof(usage));
1780  int result = getrusage(RUSAGE_SELF, &usage);
1781  assert(result == 0);
1782  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
1783  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
1784  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
1785  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
1786  EXPECT_NOT_POISONED(usage.ru_maxrss);
1787  EXPECT_NOT_POISONED(usage.ru_minflt);
1788  EXPECT_NOT_POISONED(usage.ru_majflt);
1789  EXPECT_NOT_POISONED(usage.ru_inblock);
1790  EXPECT_NOT_POISONED(usage.ru_oublock);
1791  EXPECT_NOT_POISONED(usage.ru_nvcsw);
1792  EXPECT_NOT_POISONED(usage.ru_nivcsw);
1793}
1794
1795#ifdef __GLIBC__
1796extern char *program_invocation_name;
1797#else  // __GLIBC__
1798# error "TODO: port this"
1799#endif
1800
1801static void dladdr_testfn() {}
1802
1803TEST(MemorySanitizer, dladdr) {
1804  Dl_info info;
1805  __msan_poison(&info, sizeof(info));
1806  int result = dladdr((const void*)dladdr_testfn, &info);
1807  assert(result != 0);
1808  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
1809  if (info.dli_fname)
1810    EXPECT_NOT_POISONED(strlen(info.dli_fname));
1811  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
1812  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
1813  if (info.dli_sname)
1814    EXPECT_NOT_POISONED(strlen(info.dli_sname));
1815  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
1816}
1817
1818static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
1819  (*(int *)data)++;
1820  EXPECT_NOT_POISONED(info->dlpi_addr);
1821  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
1822  EXPECT_NOT_POISONED(info->dlpi_phnum);
1823  for (int i = 0; i < info->dlpi_phnum; ++i)
1824    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
1825  return 0;
1826}
1827
1828#ifndef MSAN_TEST_DISABLE_DLOPEN
1829
1830// Compute the path to our loadable DSO.  We assume it's in the same
1831// directory.  Only use string routines that we intercept so far to do this.
1832static int PathToLoadable(char *buf, size_t sz) {
1833  const char *basename = "libmsan_loadable.x86_64.so";
1834  char *argv0 = program_invocation_name;
1835  char *last_slash = strrchr(argv0, '/');
1836  assert(last_slash);
1837  int res =
1838      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
1839  return res < sz ? 0 : res;
1840}
1841
1842TEST(MemorySanitizer, dl_iterate_phdr) {
1843  char path[4096];
1844  int res = PathToLoadable(path, sizeof(path));
1845  assert(!res);
1846
1847  // Having at least one dlopen'ed library in the process makes this more
1848  // entertaining.
1849  void *lib = dlopen(path, RTLD_LAZY);
1850  ASSERT_NE((void*)0, lib);
1851
1852  int count = 0;
1853  int result = dl_iterate_phdr(dl_phdr_callback, &count);
1854  assert(count > 0);
1855
1856  dlclose(lib);
1857}
1858
1859
1860TEST(MemorySanitizer, dlopen) {
1861  char path[4096];
1862  int res = PathToLoadable(path, sizeof(path));
1863  assert(!res);
1864
1865  // We need to clear shadow for globals when doing dlopen.  In order to test
1866  // this, we have to poison the shadow for the DSO before we load it.  In
1867  // general this is difficult, but the loader tends to reload things in the
1868  // same place, so we open, close, and then reopen.  The global should always
1869  // start out clean after dlopen.
1870  for (int i = 0; i < 2; i++) {
1871    void *lib = dlopen(path, RTLD_LAZY);
1872    if (lib == NULL) {
1873      printf("dlerror: %s\n", dlerror());
1874      assert(lib != NULL);
1875    }
1876    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
1877    assert(get_dso_global);
1878    void **dso_global = get_dso_global();
1879    EXPECT_NOT_POISONED(*dso_global);
1880    __msan_poison(dso_global, sizeof(*dso_global));
1881    EXPECT_POISONED(*dso_global);
1882    dlclose(lib);
1883  }
1884}
1885
1886// Regression test for a crash in dlopen() interceptor.
1887TEST(MemorySanitizer, dlopenFailed) {
1888  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
1889  void *lib = dlopen(path, RTLD_LAZY);
1890  ASSERT_EQ(0, lib);
1891}
1892
1893#endif // MSAN_TEST_DISABLE_DLOPEN
1894
1895TEST(MemorySanitizer, scanf) {
1896  const char *input = "42 hello";
1897  int* d = new int;
1898  char* s = new char[7];
1899  int res = sscanf(input, "%d %5s", d, s);
1900  printf("res %d\n", res);
1901  assert(res == 2);
1902  EXPECT_NOT_POISONED(*d);
1903  EXPECT_NOT_POISONED(s[0]);
1904  EXPECT_NOT_POISONED(s[1]);
1905  EXPECT_NOT_POISONED(s[2]);
1906  EXPECT_NOT_POISONED(s[3]);
1907  EXPECT_NOT_POISONED(s[4]);
1908  EXPECT_NOT_POISONED(s[5]);
1909  EXPECT_POISONED(s[6]);
1910  delete s;
1911  delete d;
1912}
1913
1914static void *SimpleThread_threadfn(void* data) {
1915  return new int;
1916}
1917
1918TEST(MemorySanitizer, SimpleThread) {
1919  pthread_t t;
1920  void *p;
1921  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
1922  assert(!res);
1923  EXPECT_NOT_POISONED(t);
1924  res = pthread_join(t, &p);
1925  assert(!res);
1926  if (!__msan_has_dynamic_component())  // FIXME: intercept pthread_join (?).
1927    __msan_unpoison(&p, sizeof(p));
1928  delete (int*)p;
1929}
1930
1931static void *SmallStackThread_threadfn(void* data) {
1932  return 0;
1933}
1934
1935TEST(MemorySanitizer, SmallStackThread) {
1936  pthread_attr_t attr;
1937  pthread_t t;
1938  void *p;
1939  int res;
1940  res = pthread_attr_init(&attr);
1941  ASSERT_EQ(0, res);
1942  res = pthread_attr_setstacksize(&attr, 64 * 1024);
1943  ASSERT_EQ(0, res);
1944  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
1945  ASSERT_EQ(0, res);
1946  res = pthread_join(t, &p);
1947  ASSERT_EQ(0, res);
1948  res = pthread_attr_destroy(&attr);
1949  ASSERT_EQ(0, res);
1950}
1951
1952TEST(MemorySanitizer, PreAllocatedStackThread) {
1953  pthread_attr_t attr;
1954  pthread_t t;
1955  int res;
1956  res = pthread_attr_init(&attr);
1957  ASSERT_EQ(0, res);
1958  void *stack;
1959  const size_t kStackSize = 64 * 1024;
1960  res = posix_memalign(&stack, 4096, kStackSize);
1961  ASSERT_EQ(0, res);
1962  res = pthread_attr_setstack(&attr, stack, kStackSize);
1963  ASSERT_EQ(0, res);
1964  // A small self-allocated stack can not be extended by the tool.
1965  // In this case pthread_create is expected to fail.
1966  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
1967  EXPECT_NE(0, res);
1968  res = pthread_attr_destroy(&attr);
1969  ASSERT_EQ(0, res);
1970}
1971
1972TEST(MemorySanitizer, pthread_getschedparam) {
1973  int policy;
1974  struct sched_param param;
1975  int res = pthread_getschedparam(pthread_self(), &policy, &param);
1976  ASSERT_EQ(0, res);
1977  EXPECT_NOT_POISONED(policy);
1978  EXPECT_NOT_POISONED(param.sched_priority);
1979}
1980
1981TEST(MemorySanitizer, posix_memalign) {
1982  void *p;
1983  EXPECT_POISONED(p);
1984  int res = posix_memalign(&p, 4096, 13);
1985  ASSERT_EQ(0, res);
1986  EXPECT_NOT_POISONED(p);
1987  free(p);
1988}
1989
1990TEST(MemorySanitizer, inet_pton) {
1991  const char *s = "1:0:0:0:0:0:0:8";
1992  unsigned char buf[sizeof(struct in6_addr)];
1993  int res = inet_pton(AF_INET6, s, buf);
1994  ASSERT_EQ(1, res);
1995  EXPECT_NOT_POISONED(buf[0]);
1996  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
1997
1998  char s_out[INET6_ADDRSTRLEN];
1999  EXPECT_POISONED(s_out[3]);
2000  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
2001  ASSERT_NE((void*)0, q);
2002  EXPECT_NOT_POISONED(s_out[3]);
2003}
2004
2005TEST(MemorySanitizer, inet_aton) {
2006  const char *s = "127.0.0.1";
2007  struct in_addr in[2];
2008  int res = inet_aton(s, in);
2009  ASSERT_NE(0, res);
2010  EXPECT_NOT_POISONED(in[0]);
2011  EXPECT_POISONED(*(char *)(in + 1));
2012}
2013
2014TEST(MemorySanitizer, uname) {
2015  struct utsname u;
2016  int res = uname(&u);
2017  assert(!res);
2018  EXPECT_NOT_POISONED(strlen(u.sysname));
2019  EXPECT_NOT_POISONED(strlen(u.nodename));
2020  EXPECT_NOT_POISONED(strlen(u.release));
2021  EXPECT_NOT_POISONED(strlen(u.version));
2022  EXPECT_NOT_POISONED(strlen(u.machine));
2023}
2024
2025TEST(MemorySanitizer, gethostname) {
2026  char buf[100];
2027  int res = gethostname(buf, 100);
2028  assert(!res);
2029  EXPECT_NOT_POISONED(strlen(buf));
2030}
2031
2032TEST(MemorySanitizer, sysinfo) {
2033  struct sysinfo info;
2034  int res = sysinfo(&info);
2035  assert(!res);
2036  EXPECT_NOT_POISONED(info);
2037}
2038
2039TEST(MemorySanitizer, getpwuid) {
2040  struct passwd *p = getpwuid(0); // root
2041  assert(p);
2042  EXPECT_NOT_POISONED(p->pw_name);
2043  assert(p->pw_name);
2044  EXPECT_NOT_POISONED(p->pw_name[0]);
2045  EXPECT_NOT_POISONED(p->pw_uid);
2046  assert(p->pw_uid == 0);
2047}
2048
2049TEST(MemorySanitizer, getpwnam_r) {
2050  struct passwd pwd;
2051  struct passwd *pwdres;
2052  char buf[10000];
2053  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
2054  assert(!res);
2055  EXPECT_NOT_POISONED(pwd.pw_name);
2056  assert(pwd.pw_name);
2057  EXPECT_NOT_POISONED(pwd.pw_name[0]);
2058  EXPECT_NOT_POISONED(pwd.pw_uid);
2059  assert(pwd.pw_uid == 0);
2060}
2061
2062TEST(MemorySanitizer, getpwnam_r_positive) {
2063  struct passwd pwd;
2064  struct passwd *pwdres;
2065  char s[5];
2066  strncpy(s, "abcd", 5);
2067  __msan_poison(s, 5);
2068  char buf[10000];
2069  int res;
2070  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
2071}
2072
2073TEST(MemorySanitizer, getgrnam_r) {
2074  struct group grp;
2075  struct group *grpres;
2076  char buf[10000];
2077  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
2078  assert(!res);
2079  EXPECT_NOT_POISONED(grp.gr_name);
2080  assert(grp.gr_name);
2081  EXPECT_NOT_POISONED(grp.gr_name[0]);
2082  EXPECT_NOT_POISONED(grp.gr_gid);
2083}
2084
2085template<class T>
2086static bool applySlt(T value, T shadow) {
2087  __msan_partial_poison(&value, &shadow, sizeof(T));
2088  volatile bool zzz = true;
2089  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
2090  // a shift-and-trunc to get at the highest bit.
2091  volatile bool v = value < 0 || zzz;
2092  return v;
2093}
2094
2095TEST(MemorySanitizer, SignedCompareWithZero) {
2096  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
2097  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
2098  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
2099  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
2100  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
2101  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
2102}
2103
2104template <class T, class S>
2105static T poisoned(T Va, S Sa) {
2106  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
2107  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
2108  T a;
2109  a = Va;
2110  __msan_partial_poison(&a, &Sa, sizeof(T));
2111  return a;
2112}
2113
2114TEST(MemorySanitizer, ICmpRelational) {
2115  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2116  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2117  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2118  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2119  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2120  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2121                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2122  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2123                  poisoned(-1, 0xFFFFFFFFU));
2124
2125  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2126  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2127  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2128  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2129  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2130  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2131                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2132  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2133                  poisoned(-1, 0xFFFFFFFFU));
2134
2135  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2136  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2137  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2138  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2139  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2140  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2141                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2142  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2143                  poisoned(-1, 0xFFFFFFFFU));
2144
2145  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2146  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2147  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2148  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2149  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2150  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2151                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2152  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2153                  poisoned(-1, 0xFFFFFFFFU));
2154
2155  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2156  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2157
2158  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2159}
2160
2161#if MSAN_HAS_M128
2162TEST(MemorySanitizer, ICmpVectorRelational) {
2163  EXPECT_NOT_POISONED(
2164      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2165                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2166  EXPECT_NOT_POISONED(
2167      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2168                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2169  EXPECT_POISONED(
2170      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2171                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2172  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2173                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2174}
2175#endif
2176
2177// Volatile bitfield store is implemented as load-mask-store
2178// Test that we don't warn on the store of (uninitialized) padding.
2179struct VolatileBitfieldStruct {
2180  volatile unsigned x : 1;
2181  unsigned y : 1;
2182};
2183
2184TEST(MemorySanitizer, VolatileBitfield) {
2185  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2186  S->x = 1;
2187  EXPECT_NOT_POISONED((unsigned)S->x);
2188  EXPECT_POISONED((unsigned)S->y);
2189}
2190
2191TEST(MemorySanitizer, UnalignedLoad) {
2192  char x[32];
2193  memset(x + 8, 0, 16);
2194  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2195  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2196  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2197  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2198  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2199  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2200  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2201
2202  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2203  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2204  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2205  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2206  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2207  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2208  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2209
2210  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2211  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2212  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2213  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2214  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2215  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2216  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2217  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2218  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2219}
2220
2221TEST(MemorySanitizer, UnalignedStore16) {
2222  char x[5];
2223  U2 y = 0;
2224  __msan_poison(&y, 1);
2225  __sanitizer_unaligned_store16(x + 1, y);
2226  EXPECT_POISONED(x[0]);
2227  EXPECT_POISONED(x[1]);
2228  EXPECT_NOT_POISONED(x[2]);
2229  EXPECT_POISONED(x[3]);
2230  EXPECT_POISONED(x[4]);
2231}
2232
2233TEST(MemorySanitizer, UnalignedStore32) {
2234  char x[8];
2235  U4 y4 = 0;
2236  __msan_poison(&y4, 2);
2237  __sanitizer_unaligned_store32(x+3, y4);
2238  EXPECT_POISONED(x[0]);
2239  EXPECT_POISONED(x[1]);
2240  EXPECT_POISONED(x[2]);
2241  EXPECT_POISONED(x[3]);
2242  EXPECT_POISONED(x[4]);
2243  EXPECT_NOT_POISONED(x[5]);
2244  EXPECT_NOT_POISONED(x[6]);
2245  EXPECT_POISONED(x[7]);
2246}
2247
2248TEST(MemorySanitizer, UnalignedStore64) {
2249  char x[16];
2250  U8 y = 0;
2251  __msan_poison(&y, 3);
2252  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2253  __sanitizer_unaligned_store64(x+3, y);
2254  EXPECT_POISONED(x[0]);
2255  EXPECT_POISONED(x[1]);
2256  EXPECT_POISONED(x[2]);
2257  EXPECT_POISONED(x[3]);
2258  EXPECT_POISONED(x[4]);
2259  EXPECT_POISONED(x[5]);
2260  EXPECT_NOT_POISONED(x[6]);
2261  EXPECT_NOT_POISONED(x[7]);
2262  EXPECT_NOT_POISONED(x[8]);
2263  EXPECT_POISONED(x[9]);
2264  EXPECT_NOT_POISONED(x[10]);
2265  EXPECT_POISONED(x[11]);
2266}
2267
2268TEST(MemorySanitizerDr, StoreInDSOTest) {
2269  if (!__msan_has_dynamic_component()) return;
2270  char* s = new char[10];
2271  dso_memfill(s, 9);
2272  EXPECT_NOT_POISONED(s[5]);
2273  EXPECT_POISONED(s[9]);
2274}
2275
2276int return_poisoned_int() {
2277  return ReturnPoisoned<U8>();
2278}
2279
2280TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2281  if (!__msan_has_dynamic_component()) return;
2282  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2283}
2284
2285NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2286  EXPECT_POISONED(x);
2287  EXPECT_POISONED(y);
2288  EXPECT_POISONED(z);
2289  return 0;
2290}
2291
2292static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2293  EXPECT_NOT_POISONED(x);
2294  EXPECT_NOT_POISONED(y);
2295  EXPECT_NOT_POISONED(z);
2296  return 0;
2297}
2298
2299TEST(MemorySanitizerDr, CallFromDSOTest) {
2300  if (!__msan_has_dynamic_component()) return;
2301  S8* x = GetPoisoned<S8>();
2302  S8* y = GetPoisoned<S8>();
2303  S8* z = GetPoisoned<S8>();
2304  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2305  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2306}
2307
2308static void StackStoreInDSOFn(int* x, int* y) {
2309  EXPECT_NOT_POISONED(*x);
2310  EXPECT_NOT_POISONED(*y);
2311}
2312
2313TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2314  if (!__msan_has_dynamic_component()) return;
2315  dso_stack_store(StackStoreInDSOFn, 1);
2316}
2317
2318TEST(MemorySanitizerOrigins, SetGet) {
2319  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2320  if (!TrackingOrigins()) return;
2321  int x;
2322  __msan_set_origin(&x, sizeof(x), 1234);
2323  EXPECT_EQ(1234, __msan_get_origin(&x));
2324  __msan_set_origin(&x, sizeof(x), 5678);
2325  EXPECT_EQ(5678, __msan_get_origin(&x));
2326  __msan_set_origin(&x, sizeof(x), 0);
2327  EXPECT_EQ(0, __msan_get_origin(&x));
2328}
2329
2330namespace {
2331struct S {
2332  U4 dummy;
2333  U2 a;
2334  U2 b;
2335};
2336
2337// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2338TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2339  if (!TrackingOrigins()) return;
2340
2341  S s;
2342  U4 origin = rand();  // NOLINT
2343  s.a = *GetPoisonedO<U2>(0, origin);
2344  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2345  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2346
2347  s.b = 42;
2348  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2349  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2350}
2351}  // namespace
2352
2353template<class T, class BinaryOp>
2354INLINE
2355void BinaryOpOriginTest(BinaryOp op) {
2356  U4 ox = rand();  //NOLINT
2357  U4 oy = rand();  //NOLINT
2358  T *x = GetPoisonedO<T>(0, ox, 0);
2359  T *y = GetPoisonedO<T>(1, oy, 0);
2360  T *z = GetPoisonedO<T>(2, 0, 0);
2361
2362  *z = op(*x, *y);
2363  U4 origin = __msan_get_origin(z);
2364  EXPECT_POISONED_O(*z, origin);
2365  EXPECT_EQ(true, origin == ox || origin == oy);
2366
2367  // y is poisoned, x is not.
2368  *x = 10101;
2369  *y = *GetPoisonedO<T>(1, oy);
2370  break_optimization(x);
2371  __msan_set_origin(z, sizeof(*z), 0);
2372  *z = op(*x, *y);
2373  EXPECT_POISONED_O(*z, oy);
2374  EXPECT_EQ(__msan_get_origin(z), oy);
2375
2376  // x is poisoned, y is not.
2377  *x = *GetPoisonedO<T>(0, ox);
2378  *y = 10101010;
2379  break_optimization(y);
2380  __msan_set_origin(z, sizeof(*z), 0);
2381  *z = op(*x, *y);
2382  EXPECT_POISONED_O(*z, ox);
2383  EXPECT_EQ(__msan_get_origin(z), ox);
2384}
2385
2386template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2387template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2388template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2389template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2390template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2391template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2392
2393TEST(MemorySanitizerOrigins, BinaryOp) {
2394  if (!TrackingOrigins()) return;
2395  BinaryOpOriginTest<S8>(XOR<S8>);
2396  BinaryOpOriginTest<U8>(ADD<U8>);
2397  BinaryOpOriginTest<S4>(SUB<S4>);
2398  BinaryOpOriginTest<S4>(MUL<S4>);
2399  BinaryOpOriginTest<U4>(OR<U4>);
2400  BinaryOpOriginTest<U4>(AND<U4>);
2401  BinaryOpOriginTest<double>(ADD<U4>);
2402  BinaryOpOriginTest<float>(ADD<S4>);
2403  BinaryOpOriginTest<double>(ADD<double>);
2404  BinaryOpOriginTest<float>(ADD<double>);
2405}
2406
2407TEST(MemorySanitizerOrigins, Unary) {
2408  if (!TrackingOrigins()) return;
2409  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2410  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2411  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2412  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2413
2414  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2415  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2416  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2417  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2418
2419  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2420  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2421  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2422  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2423
2424  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2425  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2426  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2427  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2428
2429  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2430  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2431}
2432
2433TEST(MemorySanitizerOrigins, EQ) {
2434  if (!TrackingOrigins()) return;
2435  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2436  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2437  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2438}
2439
2440TEST(MemorySanitizerOrigins, DIV) {
2441  if (!TrackingOrigins()) return;
2442  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2443  unsigned o = __LINE__;
2444  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2445}
2446
2447TEST(MemorySanitizerOrigins, SHIFT) {
2448  if (!TrackingOrigins()) return;
2449  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2450  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2451  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2452  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2453  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2454  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2455}
2456
2457template<class T, int N>
2458void MemCpyTest() {
2459  int ox = __LINE__;
2460  T *x = new T[N];
2461  T *y = new T[N];
2462  T *z = new T[N];
2463  __msan_poison(x, N * sizeof(T));
2464  __msan_set_origin(x, N * sizeof(T), ox);
2465  __msan_set_origin(y, N * sizeof(T), 777777);
2466  __msan_set_origin(z, N * sizeof(T), 888888);
2467  EXPECT_NOT_POISONED(x);
2468  memcpy(y, x, N * sizeof(T));
2469  EXPECT_POISONED_O(y[0], ox);
2470  EXPECT_POISONED_O(y[N/2], ox);
2471  EXPECT_POISONED_O(y[N-1], ox);
2472  EXPECT_NOT_POISONED(x);
2473  memmove(z, x, N * sizeof(T));
2474  EXPECT_POISONED_O(z[0], ox);
2475  EXPECT_POISONED_O(z[N/2], ox);
2476  EXPECT_POISONED_O(z[N-1], ox);
2477}
2478
2479TEST(MemorySanitizerOrigins, LargeMemCpy) {
2480  if (!TrackingOrigins()) return;
2481  MemCpyTest<U1, 10000>();
2482  MemCpyTest<U8, 10000>();
2483}
2484
2485TEST(MemorySanitizerOrigins, SmallMemCpy) {
2486  if (!TrackingOrigins()) return;
2487  MemCpyTest<U8, 1>();
2488  MemCpyTest<U8, 2>();
2489  MemCpyTest<U8, 3>();
2490}
2491
2492TEST(MemorySanitizerOrigins, Select) {
2493  if (!TrackingOrigins()) return;
2494  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2495  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2496  S4 x;
2497  break_optimization(&x);
2498  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2499
2500  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2501  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2502}
2503
2504extern "C"
2505NOINLINE char AllocaTO() {
2506  int ar[100];
2507  break_optimization(ar);
2508  return ar[10];
2509  // fprintf(stderr, "Descr: %s\n",
2510  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2511}
2512
2513TEST(MemorySanitizerOrigins, Alloca) {
2514  if (!TrackingOrigins()) return;
2515  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2516  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2517  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2518  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2519}
2520
2521// FIXME: replace with a lit-like test.
2522TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2523  if (!TrackingOrigins()) return;
2524  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2525}
2526
2527NOINLINE int RetvalOriginTest(U4 origin) {
2528  int *a = new int;
2529  break_optimization(a);
2530  __msan_set_origin(a, sizeof(*a), origin);
2531  int res = *a;
2532  delete a;
2533  return res;
2534}
2535
2536TEST(MemorySanitizerOrigins, Retval) {
2537  if (!TrackingOrigins()) return;
2538  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2539}
2540
2541NOINLINE void ParamOriginTest(int param, U4 origin) {
2542  EXPECT_POISONED_O(param, origin);
2543}
2544
2545TEST(MemorySanitizerOrigins, Param) {
2546  if (!TrackingOrigins()) return;
2547  int *a = new int;
2548  U4 origin = __LINE__;
2549  break_optimization(a);
2550  __msan_set_origin(a, sizeof(*a), origin);
2551  ParamOriginTest(*a, origin);
2552  delete a;
2553}
2554
2555TEST(MemorySanitizerOrigins, Invoke) {
2556  if (!TrackingOrigins()) return;
2557  StructWithDtor s;  // Will cause the calls to become invokes.
2558  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2559}
2560
2561TEST(MemorySanitizerOrigins, strlen) {
2562  S8 alignment;
2563  break_optimization(&alignment);
2564  char x[4] = {'a', 'b', 0, 0};
2565  __msan_poison(&x[2], 1);
2566  U4 origin = __LINE__;
2567  __msan_set_origin(x, sizeof(x), origin);
2568  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2569}
2570
2571TEST(MemorySanitizerOrigins, wcslen) {
2572  wchar_t w[3] = {'a', 'b', 0};
2573  U4 origin = __LINE__;
2574  __msan_set_origin(w, sizeof(w), origin);
2575  __msan_poison(&w[2], sizeof(wchar_t));
2576  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2577}
2578
2579#if MSAN_HAS_M128
2580TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2581  __m128 x, y;
2582  U4 origin = __LINE__;
2583  __msan_set_origin(&x, sizeof(x), origin);
2584  __msan_poison(&x, sizeof(x));
2585  __builtin_ia32_storeups((float*)&y, x);
2586  EXPECT_POISONED_O(y, origin);
2587}
2588#endif
2589
2590NOINLINE void RecursiveMalloc(int depth) {
2591  static int count;
2592  count++;
2593  if ((count % (1024 * 1024)) == 0)
2594    printf("RecursiveMalloc: %d\n", count);
2595  int *x1 = new int;
2596  int *x2 = new int;
2597  break_optimization(x1);
2598  break_optimization(x2);
2599  if (depth > 0) {
2600    RecursiveMalloc(depth-1);
2601    RecursiveMalloc(depth-1);
2602  }
2603  delete x1;
2604  delete x2;
2605}
2606
2607TEST(MemorySanitizer, CallocOverflow) {
2608  size_t kArraySize = 4096;
2609  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2610  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2611  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2612  EXPECT_EQ(0L, Ident(p));
2613}
2614
2615TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2616  RecursiveMalloc(22);
2617}
2618