msan_test.cc revision 0797ed4bfc4adaa1436dbd153b276ed9c917f1b7 
1//===-- msan_test.cc ------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9//
10// This file is a part of MemorySanitizer.
11//
12// MemorySanitizer unit tests.
13//===----------------------------------------------------------------------===//
14
15#ifndef MSAN_EXTERNAL_TEST_CONFIG
16#include "msan_test_config.h"
17#endif // MSAN_EXTERNAL_TEST_CONFIG
18
19#include "sanitizer/msan_interface.h"
20#include "msandr_test_so.h"
21
22#include <stdlib.h>
23#include <stdarg.h>
24#include <stdio.h>
25#include <assert.h>
26#include <wchar.h>
27#include <math.h>
28
29#include <arpa/inet.h>
30#include <dlfcn.h>
31#include <grp.h>
32#include <unistd.h>
33#include <link.h>
34#include <limits.h>
35#include <sys/time.h>
36#include <sys/types.h>
37#include <sys/stat.h>
38#include <fcntl.h>
39#include <sys/resource.h>
40#include <sys/ioctl.h>
41#include <sys/utsname.h>
42#include <sys/mman.h>
43#include <sys/vfs.h>
44#include <dirent.h>
45#include <pwd.h>
46#include <sys/socket.h>
47#include <netdb.h>
48
49#if defined(__i386__) || defined(__x86_64__)
50# include <emmintrin.h>
51# define MSAN_HAS_M128 1
52#else
53# define MSAN_HAS_M128 0
54#endif
55
56typedef unsigned char      U1;
57typedef unsigned short     U2;  // NOLINT
58typedef unsigned int       U4;
59typedef unsigned long long U8;  // NOLINT
60typedef   signed char      S1;
61typedef   signed short     S2;  // NOLINT
62typedef   signed int       S4;
63typedef   signed long long S8;  // NOLINT
64#define NOINLINE      __attribute__((noinline))
65#define INLINE      __attribute__((always_inline))
66
67static bool TrackingOrigins() {
68  S8 x;
69  __msan_set_origin(&x, sizeof(x), 0x1234);
70  U4 origin = __msan_get_origin(&x);
71  __msan_set_origin(&x, sizeof(x), 0);
72  return origin == 0x1234;
73}
74
75#define EXPECT_UMR(action) \
76    do {                        \
77      __msan_set_expect_umr(1); \
78      action;                   \
79      __msan_set_expect_umr(0); \
80    } while (0)
81
82#define EXPECT_UMR_O(action, origin) \
83    do {                                            \
84      __msan_set_expect_umr(1);                     \
85      action;                                       \
86      __msan_set_expect_umr(0);                     \
87      if (TrackingOrigins())                        \
88        EXPECT_EQ(origin, __msan_get_umr_origin()); \
89    } while (0)
90
91#define EXPECT_UMR_S(action, stack_origin) \
92    do {                                            \
93      __msan_set_expect_umr(1);                     \
94      action;                                       \
95      __msan_set_expect_umr(0);                     \
96      U4 id = __msan_get_umr_origin();             \
97      const char *str = __msan_get_origin_descr_if_stack(id); \
98      if (!str || strcmp(str, stack_origin)) {      \
99        fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s", \
100                id, stack_origin, str);  \
101        EXPECT_EQ(1, 0);                            \
102      }                                             \
103    } while (0)
104
105#define EXPECT_POISONED(x) ExpectPoisoned(x)
106
107template<typename T>
108void ExpectPoisoned(const T& t) {
109  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
110}
111
112#define EXPECT_POISONED_O(x, origin) \
113  ExpectPoisonedWithOrigin(x, origin)
114
115template<typename T>
116void ExpectPoisonedWithOrigin(const T& t, unsigned origin) {
117  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
118  if (TrackingOrigins())
119    EXPECT_EQ(origin, __msan_get_origin((void*)&t));
120}
121
122#define EXPECT_POISONED_S(x, stack_origin) \
123  ExpectPoisonedWithStackOrigin(x, stack_origin)
124
125template<typename T>
126void ExpectPoisonedWithStackOrigin(const T& t, const char *stack_origin) {
127  EXPECT_NE(-1, __msan_test_shadow((void*)&t, sizeof(t)));
128  U4 id = __msan_get_origin((void*)&t);
129  const char *str = __msan_get_origin_descr_if_stack(id);
130  if (!str || strcmp(str, stack_origin)) {
131    fprintf(stderr, "EXPECT_POISONED_S: id=%u %s, %s",
132        id, stack_origin, str);
133    EXPECT_EQ(1, 0);
134  }
135}
136
137#define EXPECT_NOT_POISONED(x) ExpectNotPoisoned(x)
138
139template<typename T>
140void ExpectNotPoisoned(const T& t) {
141  EXPECT_EQ(-1, __msan_test_shadow((void*)&t, sizeof(t)));
142}
143
144static U8 poisoned_array[100];
145template<class T>
146T *GetPoisoned(int i = 0, T val = 0) {
147  T *res = (T*)&poisoned_array[i];
148  *res = val;
149  __msan_poison(&poisoned_array[i], sizeof(T));
150  return res;
151}
152
153template<class T>
154T *GetPoisonedO(int i, U4 origin, T val = 0) {
155  T *res = (T*)&poisoned_array[i];
156  *res = val;
157  __msan_poison(&poisoned_array[i], sizeof(T));
158  __msan_set_origin(&poisoned_array[i], sizeof(T), origin);
159  return res;
160}
161
162// This function returns its parameter but in such a way that compiler
163// can not prove it.
164template<class T>
165NOINLINE
166static T Ident(T t) {
167  volatile T ret = t;
168  return ret;
169}
170
171template<class T> NOINLINE T ReturnPoisoned() { return *GetPoisoned<T>(); }
172
173static volatile int g_one = 1;
174static volatile int g_zero = 0;
175static volatile int g_0 = 0;
176static volatile int g_1 = 1;
177
178S4 a_s4[100];
179S8 a_s8[100];
180
181// Check that malloc poisons memory.
182// A lot of tests below depend on this.
183TEST(MemorySanitizerSanity, PoisonInMalloc) {
184  int *x = (int*)malloc(sizeof(int));
185  EXPECT_POISONED(*x);
186  free(x);
187}
188
189TEST(MemorySanitizer, NegativeTest1) {
190  S4 *x = GetPoisoned<S4>();
191  if (g_one)
192    *x = 0;
193  EXPECT_NOT_POISONED(*x);
194}
195
196TEST(MemorySanitizer, PositiveTest1) {
197  // Load to store.
198  EXPECT_POISONED(*GetPoisoned<S1>());
199  EXPECT_POISONED(*GetPoisoned<S2>());
200  EXPECT_POISONED(*GetPoisoned<S4>());
201  EXPECT_POISONED(*GetPoisoned<S8>());
202
203  // S->S conversions.
204  EXPECT_POISONED(*GetPoisoned<S1>());
205  EXPECT_POISONED(*GetPoisoned<S1>());
206  EXPECT_POISONED(*GetPoisoned<S1>());
207
208  EXPECT_POISONED(*GetPoisoned<S2>());
209  EXPECT_POISONED(*GetPoisoned<S2>());
210  EXPECT_POISONED(*GetPoisoned<S2>());
211
212  EXPECT_POISONED(*GetPoisoned<S4>());
213  EXPECT_POISONED(*GetPoisoned<S4>());
214  EXPECT_POISONED(*GetPoisoned<S4>());
215
216  EXPECT_POISONED(*GetPoisoned<S8>());
217  EXPECT_POISONED(*GetPoisoned<S8>());
218  EXPECT_POISONED(*GetPoisoned<S8>());
219
220  // ZExt
221  EXPECT_POISONED(*GetPoisoned<U1>());
222  EXPECT_POISONED(*GetPoisoned<U1>());
223  EXPECT_POISONED(*GetPoisoned<U1>());
224  EXPECT_POISONED(*GetPoisoned<U2>());
225  EXPECT_POISONED(*GetPoisoned<U2>());
226  EXPECT_POISONED(*GetPoisoned<U4>());
227
228  // Unary ops.
229  EXPECT_POISONED(- *GetPoisoned<S4>());
230
231  EXPECT_UMR(a_s4[g_zero] = 100 / *GetPoisoned<S4>(0, 1));
232
233
234  a_s4[g_zero] = 1 - *GetPoisoned<S4>();
235  a_s4[g_zero] = 1 + *GetPoisoned<S4>();
236}
237
238TEST(MemorySanitizer, Phi1) {
239  S4 c;
240  if (g_one) {
241    c = *GetPoisoned<S4>();
242  } else {
243    break_optimization(0);
244    c = 0;
245  }
246  EXPECT_POISONED(c);
247}
248
249TEST(MemorySanitizer, Phi2) {
250  S4 i = *GetPoisoned<S4>();
251  S4 n = g_one;
252  EXPECT_UMR(for (; i < g_one; i++););
253  EXPECT_POISONED(i);
254}
255
256NOINLINE void Arg1ExpectUMR(S4 a1) { EXPECT_POISONED(a1); }
257NOINLINE void Arg2ExpectUMR(S4 a1, S4 a2) { EXPECT_POISONED(a2); }
258NOINLINE void Arg3ExpectUMR(S1 a1, S4 a2, S8 a3) { EXPECT_POISONED(a3); }
259
260TEST(MemorySanitizer, ArgTest) {
261  Arg1ExpectUMR(*GetPoisoned<S4>());
262  Arg2ExpectUMR(0, *GetPoisoned<S4>());
263  Arg3ExpectUMR(0, 1, *GetPoisoned<S8>());
264}
265
266
267TEST(MemorySanitizer, CallAndRet) {
268  if (!__msan_has_dynamic_component()) return;
269  ReturnPoisoned<S1>();
270  ReturnPoisoned<S2>();
271  ReturnPoisoned<S4>();
272  ReturnPoisoned<S8>();
273
274  EXPECT_POISONED(ReturnPoisoned<S1>());
275  EXPECT_POISONED(ReturnPoisoned<S2>());
276  EXPECT_POISONED(ReturnPoisoned<S4>());
277  EXPECT_POISONED(ReturnPoisoned<S8>());
278}
279
280// malloc() in the following test may be optimized to produce a compile-time
281// undef value. Check that we trap on the volatile assignment anyway.
282TEST(MemorySanitizer, DISABLED_MallocNoIdent) {
283  S4 *x = (int*)malloc(sizeof(S4));
284  EXPECT_POISONED(*x);
285  free(x);
286}
287
288TEST(MemorySanitizer, Malloc) {
289  S4 *x = (int*)Ident(malloc(sizeof(S4)));
290  EXPECT_POISONED(*x);
291  free(x);
292}
293
294TEST(MemorySanitizer, Realloc) {
295  S4 *x = (int*)Ident(realloc(0, sizeof(S4)));
296  EXPECT_POISONED(x[0]);
297  x[0] = 1;
298  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
299  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
300  EXPECT_POISONED(x[1]);
301  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
302  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
303  EXPECT_POISONED(x[2]);
304  EXPECT_POISONED(x[1]);
305  x[2] = 1;  // Init this here. Check that after realloc it is poisoned again.
306  x = (int*)Ident(realloc(x, 2 * sizeof(S4)));
307  EXPECT_NOT_POISONED(x[0]);  // Ok, was inited before.
308  EXPECT_POISONED(x[1]);
309  x = (int*)Ident(realloc(x, 3 * sizeof(S4)));
310  EXPECT_POISONED(x[1]);
311  EXPECT_POISONED(x[2]);
312  free(x);
313}
314
315TEST(MemorySanitizer, Calloc) {
316  S4 *x = (int*)Ident(calloc(1, sizeof(S4)));
317  EXPECT_NOT_POISONED(*x);  // Should not be poisoned.
318  // EXPECT_EQ(0, *x);
319  free(x);
320}
321
322TEST(MemorySanitizer, AndOr) {
323  U4 *p = GetPoisoned<U4>();
324  // We poison two bytes in the midle of a 4-byte word to make the test
325  // correct regardless of endianness.
326  ((U1*)p)[1] = 0;
327  ((U1*)p)[2] = 0xff;
328  EXPECT_NOT_POISONED(*p & 0x00ffff00);
329  EXPECT_NOT_POISONED(*p & 0x00ff0000);
330  EXPECT_NOT_POISONED(*p & 0x0000ff00);
331  EXPECT_POISONED(*p & 0xff000000);
332  EXPECT_POISONED(*p & 0x000000ff);
333  EXPECT_POISONED(*p & 0x0000ffff);
334  EXPECT_POISONED(*p & 0xffff0000);
335
336  EXPECT_NOT_POISONED(*p | 0xff0000ff);
337  EXPECT_NOT_POISONED(*p | 0xff00ffff);
338  EXPECT_NOT_POISONED(*p | 0xffff00ff);
339  EXPECT_POISONED(*p | 0xff000000);
340  EXPECT_POISONED(*p | 0x000000ff);
341  EXPECT_POISONED(*p | 0x0000ffff);
342  EXPECT_POISONED(*p | 0xffff0000);
343
344  EXPECT_POISONED(*GetPoisoned<bool>() & *GetPoisoned<bool>());
345}
346
347template<class T>
348static bool applyNot(T value, T shadow) {
349  __msan_partial_poison(&value, &shadow, sizeof(T));
350  return !value;
351}
352
353TEST(MemorySanitizer, Not) {
354  EXPECT_NOT_POISONED(applyNot<U4>(0x0, 0x0));
355  EXPECT_NOT_POISONED(applyNot<U4>(0xFFFFFFFF, 0x0));
356  EXPECT_POISONED(applyNot<U4>(0xFFFFFFFF, 0xFFFFFFFF));
357  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0FFFFFFF));
358  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00FFFFFF));
359  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x0000FFFF));
360  EXPECT_NOT_POISONED(applyNot<U4>(0xFF000000, 0x00000000));
361  EXPECT_POISONED(applyNot<U4>(0xFF000000, 0xFF000000));
362  EXPECT_NOT_POISONED(applyNot<U4>(0xFF800000, 0xFF000000));
363  EXPECT_POISONED(applyNot<U4>(0x00008000, 0x00008000));
364
365  EXPECT_NOT_POISONED(applyNot<U1>(0x0, 0x0));
366  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0xFE));
367  EXPECT_NOT_POISONED(applyNot<U1>(0xFF, 0x0));
368  EXPECT_POISONED(applyNot<U1>(0xFF, 0xFF));
369
370  EXPECT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-1)));
371  EXPECT_NOT_POISONED(applyNot<void*>((void*)0xFFFFFF, (void*)(-2)));
372}
373
374TEST(MemorySanitizer, Shift) {
375  U4 *up = GetPoisoned<U4>();
376  ((U1*)up)[0] = 0;
377  ((U1*)up)[3] = 0xff;
378  EXPECT_NOT_POISONED(*up >> 30);
379  EXPECT_NOT_POISONED(*up >> 24);
380  EXPECT_POISONED(*up >> 23);
381  EXPECT_POISONED(*up >> 10);
382
383  EXPECT_NOT_POISONED(*up << 30);
384  EXPECT_NOT_POISONED(*up << 24);
385  EXPECT_POISONED(*up << 23);
386  EXPECT_POISONED(*up << 10);
387
388  S4 *sp = (S4*)up;
389  EXPECT_NOT_POISONED(*sp >> 30);
390  EXPECT_NOT_POISONED(*sp >> 24);
391  EXPECT_POISONED(*sp >> 23);
392  EXPECT_POISONED(*sp >> 10);
393
394  sp = GetPoisoned<S4>();
395  ((S1*)sp)[1] = 0;
396  ((S1*)sp)[2] = 0;
397  EXPECT_POISONED(*sp >> 31);
398
399  EXPECT_POISONED(100 >> *GetPoisoned<S4>());
400  EXPECT_POISONED(100U >> *GetPoisoned<S4>());
401}
402
403NOINLINE static int GetPoisonedZero() {
404  int *zero = new int;
405  *zero = 0;
406  __msan_poison(zero, sizeof(*zero));
407  int res = *zero;
408  delete zero;
409  return res;
410}
411
412TEST(MemorySanitizer, LoadFromDirtyAddress) {
413  int *a = new int;
414  *a = 0;
415  EXPECT_UMR(break_optimization((void*)(U8)a[GetPoisonedZero()]));
416  delete a;
417}
418
419TEST(MemorySanitizer, StoreToDirtyAddress) {
420  int *a = new int;
421  EXPECT_UMR(a[GetPoisonedZero()] = 0);
422  break_optimization(a);
423  delete a;
424}
425
426
427NOINLINE void StackTestFunc() {
428  S4 p4;
429  S4 ok4 = 1;
430  S2 p2;
431  S2 ok2 = 1;
432  S1 p1;
433  S1 ok1 = 1;
434  break_optimization(&p4);
435  break_optimization(&ok4);
436  break_optimization(&p2);
437  break_optimization(&ok2);
438  break_optimization(&p1);
439  break_optimization(&ok1);
440
441  EXPECT_POISONED(p4);
442  EXPECT_POISONED(p2);
443  EXPECT_POISONED(p1);
444  EXPECT_NOT_POISONED(ok1);
445  EXPECT_NOT_POISONED(ok2);
446  EXPECT_NOT_POISONED(ok4);
447}
448
449TEST(MemorySanitizer, StackTest) {
450  StackTestFunc();
451}
452
453NOINLINE void StackStressFunc() {
454  int foo[10000];
455  break_optimization(foo);
456}
457
458TEST(MemorySanitizer, DISABLED_StackStressTest) {
459  for (int i = 0; i < 1000000; i++)
460    StackStressFunc();
461}
462
463template<class T>
464void TestFloatingPoint() {
465  static volatile T v;
466  static T g[100];
467  break_optimization(&g);
468  T *x = GetPoisoned<T>();
469  T *y = GetPoisoned<T>(1);
470  EXPECT_POISONED(*x);
471  EXPECT_POISONED((long long)*x);
472  EXPECT_POISONED((int)*x);
473  g[0] = *x;
474  g[1] = *x + *y;
475  g[2] = *x - *y;
476  g[3] = *x * *y;
477}
478
479TEST(MemorySanitizer, FloatingPointTest) {
480  TestFloatingPoint<float>();
481  TestFloatingPoint<double>();
482}
483
484TEST(MemorySanitizer, DynMem) {
485  S4 x = 0;
486  S4 *y = GetPoisoned<S4>();
487  memcpy(y, &x, g_one * sizeof(S4));
488  EXPECT_NOT_POISONED(*y);
489}
490
491static char *DynRetTestStr;
492
493TEST(MemorySanitizer, DynRet) {
494  if (!__msan_has_dynamic_component()) return;
495  ReturnPoisoned<S8>();
496  EXPECT_NOT_POISONED(clearenv());
497}
498
499
500TEST(MemorySanitizer, DynRet1) {
501  if (!__msan_has_dynamic_component()) return;
502  ReturnPoisoned<S8>();
503}
504
505struct LargeStruct {
506  S4 x[10];
507};
508
509NOINLINE
510LargeStruct LargeRetTest() {
511  LargeStruct res;
512  res.x[0] = *GetPoisoned<S4>();
513  res.x[1] = *GetPoisoned<S4>();
514  res.x[2] = *GetPoisoned<S4>();
515  res.x[3] = *GetPoisoned<S4>();
516  res.x[4] = *GetPoisoned<S4>();
517  res.x[5] = *GetPoisoned<S4>();
518  res.x[6] = *GetPoisoned<S4>();
519  res.x[7] = *GetPoisoned<S4>();
520  res.x[8] = *GetPoisoned<S4>();
521  res.x[9] = *GetPoisoned<S4>();
522  return res;
523}
524
525TEST(MemorySanitizer, LargeRet) {
526  LargeStruct a = LargeRetTest();
527  EXPECT_POISONED(a.x[0]);
528  EXPECT_POISONED(a.x[9]);
529}
530
531TEST(MemorySanitizer, fread) {
532  char *x = new char[32];
533  FILE *f = fopen("/proc/self/stat", "r");
534  assert(f);
535  fread(x, 1, 32, f);
536  EXPECT_NOT_POISONED(x[0]);
537  EXPECT_NOT_POISONED(x[16]);
538  EXPECT_NOT_POISONED(x[31]);
539  fclose(f);
540  delete x;
541}
542
543TEST(MemorySanitizer, read) {
544  char *x = new char[32];
545  int fd = open("/proc/self/stat", O_RDONLY);
546  assert(fd > 0);
547  int sz = read(fd, x, 32);
548  assert(sz == 32);
549  EXPECT_NOT_POISONED(x[0]);
550  EXPECT_NOT_POISONED(x[16]);
551  EXPECT_NOT_POISONED(x[31]);
552  close(fd);
553  delete x;
554}
555
556TEST(MemorySanitizer, pread) {
557  char *x = new char[32];
558  int fd = open("/proc/self/stat", O_RDONLY);
559  assert(fd > 0);
560  int sz = pread(fd, x, 32, 0);
561  assert(sz == 32);
562  EXPECT_NOT_POISONED(x[0]);
563  EXPECT_NOT_POISONED(x[16]);
564  EXPECT_NOT_POISONED(x[31]);
565  close(fd);
566  delete x;
567}
568
569// FIXME: fails now.
570TEST(MemorySanitizer, DISABLED_ioctl) {
571  struct winsize ws;
572  EXPECT_EQ(ioctl(2, TIOCGWINSZ, &ws), 0);
573  EXPECT_NOT_POISONED(ws.ws_col);
574}
575
576TEST(MemorySanitizer, readlink) {
577  char *x = new char[1000];
578  readlink("/proc/self/exe", x, 1000);
579  EXPECT_NOT_POISONED(x[0]);
580  delete [] x;
581}
582
583
584TEST(MemorySanitizer, stat) {
585  struct stat* st = new struct stat;
586  int res = stat("/proc/self/stat", st);
587  assert(!res);
588  EXPECT_NOT_POISONED(st->st_dev);
589  EXPECT_NOT_POISONED(st->st_mode);
590  EXPECT_NOT_POISONED(st->st_size);
591}
592
593TEST(MemorySanitizer, statfs) {
594  struct statfs* st = new struct statfs;
595  int res = statfs("/", st);
596  assert(!res);
597  EXPECT_NOT_POISONED(st->f_type);
598  EXPECT_NOT_POISONED(st->f_bfree);
599  EXPECT_NOT_POISONED(st->f_namelen);
600}
601
602TEST(MemorySanitizer, pipe) {
603  int* pipefd = new int[2];
604  int res = pipe(pipefd);
605  assert(!res);
606  EXPECT_NOT_POISONED(pipefd[0]);
607  EXPECT_NOT_POISONED(pipefd[1]);
608  close(pipefd[0]);
609  close(pipefd[1]);
610}
611
612TEST(MemorySanitizer, pipe2) {
613  int* pipefd = new int[2];
614  int res = pipe2(pipefd, O_NONBLOCK);
615  assert(!res);
616  EXPECT_NOT_POISONED(pipefd[0]);
617  EXPECT_NOT_POISONED(pipefd[1]);
618  close(pipefd[0]);
619  close(pipefd[1]);
620}
621
622TEST(MemorySanitizer, socketpair) {
623  int sv[2];
624  int res = socketpair(AF_UNIX, SOCK_STREAM, 0, sv);
625  assert(!res);
626  EXPECT_NOT_POISONED(sv[0]);
627  EXPECT_NOT_POISONED(sv[1]);
628  close(sv[0]);
629  close(sv[1]);
630}
631
632TEST(MemorySanitizer, bind_getsockname) {
633  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
634
635  struct sockaddr_in sai;
636  memset(&sai, 0, sizeof(sai));
637  sai.sin_family = AF_UNIX;
638  int res = bind(sock, (struct sockaddr *)&sai, sizeof(sai));
639
640  assert(!res);
641  char buf[200];
642  socklen_t addrlen;
643  EXPECT_UMR(getsockname(sock, (struct sockaddr *)&buf, &addrlen));
644
645  addrlen = sizeof(buf);
646  res = getsockname(sock, (struct sockaddr *)&buf, &addrlen);
647  EXPECT_NOT_POISONED(addrlen);
648  EXPECT_NOT_POISONED(buf[0]);
649  EXPECT_NOT_POISONED(buf[addrlen - 1]);
650  EXPECT_POISONED(buf[addrlen]);
651  close(sock);
652}
653
654TEST(MemorySanitizer, accept) {
655  int listen_socket = socket(AF_INET, SOCK_STREAM, 0);
656  ASSERT_LT(0, listen_socket);
657
658  struct sockaddr_in sai;
659  sai.sin_family = AF_INET;
660  sai.sin_port = 0;
661  sai.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
662  int res = bind(listen_socket, (struct sockaddr *)&sai, sizeof(sai));
663  ASSERT_EQ(0, res);
664
665  res = listen(listen_socket, 1);
666  ASSERT_EQ(0, res);
667
668  socklen_t sz = sizeof(sai);
669  res = getsockname(listen_socket, (struct sockaddr *)&sai, &sz);
670  ASSERT_EQ(0, res);
671  ASSERT_EQ(sizeof(sai), sz);
672
673  int connect_socket = socket(AF_INET, SOCK_STREAM, 0);
674  ASSERT_LT(0, connect_socket);
675  res = fcntl(connect_socket, F_SETFL, O_NONBLOCK);
676  ASSERT_EQ(0, res);
677  res = connect(connect_socket, (struct sockaddr *)&sai, sizeof(sai));
678  ASSERT_EQ(-1, res);
679  ASSERT_EQ(EINPROGRESS, errno);
680
681  __msan_poison(&sai, sizeof(sai));
682  int new_sock = accept(listen_socket, (struct sockaddr *)&sai, &sz);
683  ASSERT_LT(0, new_sock);
684  ASSERT_EQ(sizeof(sai), sz);
685  EXPECT_NOT_POISONED(sai);
686
687  __msan_poison(&sai, sizeof(sai));
688  res = getpeername(new_sock, (struct sockaddr *)&sai, &sz);
689  ASSERT_EQ(0, res);
690  ASSERT_EQ(sizeof(sai), sz);
691  EXPECT_NOT_POISONED(sai);
692
693  close(new_sock);
694  close(connect_socket);
695  close(listen_socket);
696}
697
698TEST(MemorySanitizer, getaddrinfo) {
699  struct addrinfo *ai;
700  struct addrinfo hints;
701  memset(&hints, 0, sizeof(hints));
702  hints.ai_family = AF_INET;
703  int res = getaddrinfo("localhost", NULL, &hints, &ai);
704  ASSERT_EQ(0, res);
705  EXPECT_NOT_POISONED(*ai);
706  ASSERT_EQ(sizeof(sockaddr_in), ai->ai_addrlen);
707  EXPECT_NOT_POISONED(*(sockaddr_in*)ai->ai_addr);
708}
709
710#define EXPECT_HOSTENT_NOT_POISONED(he)        \
711  do {                                         \
712    EXPECT_NOT_POISONED(*(he));                \
713    ASSERT_NE((void *) 0, (he)->h_name);       \
714    ASSERT_NE((void *) 0, (he)->h_aliases);    \
715    ASSERT_NE((void *) 0, (he)->h_addr_list);  \
716    EXPECT_NOT_POISONED(strlen((he)->h_name)); \
717    char **p = (he)->h_aliases;                \
718    while (*p) {                               \
719      EXPECT_NOT_POISONED(strlen(*p));         \
720      ++p;                                     \
721    }                                          \
722    char **q = (he)->h_addr_list;              \
723    while (*q) {                               \
724      EXPECT_NOT_POISONED(*q[0]);              \
725      ++q;                                     \
726    }                                          \
727    EXPECT_NOT_POISONED(*q);                   \
728  } while (0)
729
730TEST(MemorySanitizer, gethostent) {
731  struct hostent *he = gethostent();
732  ASSERT_NE((void *)NULL, he);
733  EXPECT_HOSTENT_NOT_POISONED(he);
734}
735
736TEST(MemorySanitizer, gethostbyname) {
737  struct hostent *he = gethostbyname("localhost");
738  ASSERT_NE((void *)NULL, he);
739  EXPECT_HOSTENT_NOT_POISONED(he);
740}
741
742TEST(MemorySanitizer, gethostbyname2) {
743  struct hostent *he = gethostbyname2("localhost", AF_INET);
744  ASSERT_NE((void *)NULL, he);
745  EXPECT_HOSTENT_NOT_POISONED(he);
746}
747
748TEST(MemorySanitizer, gethostbyaddr) {
749  in_addr_t addr = inet_addr("127.0.0.1");
750  EXPECT_NOT_POISONED(addr);
751  struct hostent *he = gethostbyaddr(&addr, sizeof(addr), AF_INET);
752  ASSERT_NE((void *)NULL, he);
753  EXPECT_HOSTENT_NOT_POISONED(he);
754}
755
756TEST(MemorySanitizer, gethostent_r) {
757  char buf[2000];
758  struct hostent he;
759  struct hostent *result;
760  int err;
761  int res = gethostent_r(&he, buf, sizeof(buf), &result, &err);
762  ASSERT_EQ(0, res);
763  EXPECT_NOT_POISONED(result);
764  ASSERT_NE((void *)NULL, result);
765  EXPECT_HOSTENT_NOT_POISONED(result);
766  EXPECT_NOT_POISONED(err);
767}
768
769TEST(MemorySanitizer, gethostbyname_r) {
770  char buf[2000];
771  struct hostent he;
772  struct hostent *result;
773  int err;
774  int res = gethostbyname_r("localhost", &he, buf, sizeof(buf), &result, &err);
775  ASSERT_EQ(0, res);
776  EXPECT_NOT_POISONED(result);
777  ASSERT_NE((void *)NULL, result);
778  EXPECT_HOSTENT_NOT_POISONED(result);
779  EXPECT_NOT_POISONED(err);
780}
781
782TEST(MemorySanitizer, gethostbyname2_r) {
783  char buf[2000];
784  struct hostent he;
785  struct hostent *result;
786  int err;
787  int res = gethostbyname2_r("localhost", AF_INET, &he, buf, sizeof(buf),
788                             &result, &err);
789  ASSERT_EQ(0, res);
790  EXPECT_NOT_POISONED(result);
791  ASSERT_NE((void *)NULL, result);
792  EXPECT_HOSTENT_NOT_POISONED(result);
793  EXPECT_NOT_POISONED(err);
794}
795
796TEST(MemorySanitizer, gethostbyaddr_r) {
797  char buf[2000];
798  struct hostent he;
799  struct hostent *result;
800  int err;
801  in_addr_t addr = inet_addr("127.0.0.1");
802  EXPECT_NOT_POISONED(addr);
803  int res = gethostbyaddr_r(&addr, sizeof(addr), AF_INET, &he, buf, sizeof(buf),
804                            &result, &err);
805  ASSERT_EQ(0, res);
806  EXPECT_NOT_POISONED(result);
807  ASSERT_NE((void *)NULL, result);
808  EXPECT_HOSTENT_NOT_POISONED(result);
809  EXPECT_NOT_POISONED(err);
810}
811
812TEST(MemorySanitizer, getsockopt) {
813  int sock = socket(AF_UNIX, SOCK_STREAM, 0);
814  struct linger l[2];
815  socklen_t sz = sizeof(l[0]);
816  int res = getsockopt(sock, SOL_SOCKET, SO_LINGER, &l[0], &sz);
817  ASSERT_EQ(0, res);
818  ASSERT_EQ(sizeof(l[0]), sz);
819  EXPECT_NOT_POISONED(l[0]);
820  EXPECT_POISONED(*(char *)(l + 1));
821}
822
823TEST(MemorySanitizer, getcwd) {
824  char path[PATH_MAX + 1];
825  char* res = getcwd(path, sizeof(path));
826  assert(res);
827  EXPECT_NOT_POISONED(path[0]);
828}
829
830TEST(MemorySanitizer, getcwd_gnu) {
831  char* res = getcwd(NULL, 0);
832  assert(res);
833  EXPECT_NOT_POISONED(res[0]);
834  free(res);
835}
836
837TEST(MemorySanitizer, readdir) {
838  DIR *dir = opendir(".");
839  struct dirent *d = readdir(dir);
840  assert(d);
841  EXPECT_NOT_POISONED(d->d_name[0]);
842  closedir(dir);
843}
844
845TEST(MemorySanitizer, realpath) {
846  const char* relpath = ".";
847  char path[PATH_MAX + 1];
848  char* res = realpath(relpath, path);
849  assert(res);
850  EXPECT_NOT_POISONED(path[0]);
851}
852
853TEST(MemorySanitizer, memcpy) {
854  char* x = new char[2];
855  char* y = new char[2];
856  x[0] = 1;
857  x[1] = *GetPoisoned<char>();
858  memcpy(y, x, 2);
859  EXPECT_NOT_POISONED(y[0]);
860  EXPECT_POISONED(y[1]);
861}
862
863TEST(MemorySanitizer, memmove) {
864  char* x = new char[2];
865  char* y = new char[2];
866  x[0] = 1;
867  x[1] = *GetPoisoned<char>();
868  memmove(y, x, 2);
869  EXPECT_NOT_POISONED(y[0]);
870  EXPECT_POISONED(y[1]);
871}
872
873TEST(MemorySanitizer, strdup) {
874  char buf[4] = "abc";
875  __msan_poison(buf + 2, sizeof(*buf));
876  char *x = strdup(buf);
877  EXPECT_NOT_POISONED(x[0]);
878  EXPECT_NOT_POISONED(x[1]);
879  EXPECT_POISONED(x[2]);
880  EXPECT_NOT_POISONED(x[3]);
881  free(x);
882}
883
884TEST(MemorySanitizer, strndup) {
885  char buf[4] = "abc";
886  __msan_poison(buf + 2, sizeof(*buf));
887  char *x = strndup(buf, 3);
888  EXPECT_NOT_POISONED(x[0]);
889  EXPECT_NOT_POISONED(x[1]);
890  EXPECT_POISONED(x[2]);
891  EXPECT_NOT_POISONED(x[3]);
892  free(x);
893}
894
895TEST(MemorySanitizer, strndup_short) {
896  char buf[4] = "abc";
897  __msan_poison(buf + 1, sizeof(*buf));
898  __msan_poison(buf + 2, sizeof(*buf));
899  char *x = strndup(buf, 2);
900  EXPECT_NOT_POISONED(x[0]);
901  EXPECT_POISONED(x[1]);
902  EXPECT_NOT_POISONED(x[2]);
903  free(x);
904}
905
906
907template<class T, int size>
908void TestOverlapMemmove() {
909  T *x = new T[size];
910  assert(size >= 3);
911  x[2] = 0;
912  memmove(x, x + 1, (size - 1) * sizeof(T));
913  EXPECT_NOT_POISONED(x[1]);
914  if (!__msan_has_dynamic_component()) {
915    // FIXME: under DR we will lose this information
916    // because accesses in memmove will unpoisin the shadow.
917    // We need to use our own memove implementation instead of libc's.
918    EXPECT_POISONED(x[0]);
919    EXPECT_POISONED(x[2]);
920  }
921  delete [] x;
922}
923
924TEST(MemorySanitizer, overlap_memmove) {
925  TestOverlapMemmove<U1, 10>();
926  TestOverlapMemmove<U1, 1000>();
927  TestOverlapMemmove<U8, 4>();
928  TestOverlapMemmove<U8, 1000>();
929}
930
931TEST(MemorySanitizer, strcpy) {  // NOLINT
932  char* x = new char[3];
933  char* y = new char[3];
934  x[0] = 'a';
935  x[1] = *GetPoisoned<char>(1, 1);
936  x[2] = 0;
937  strcpy(y, x);  // NOLINT
938  EXPECT_NOT_POISONED(y[0]);
939  EXPECT_POISONED(y[1]);
940  EXPECT_NOT_POISONED(y[2]);
941}
942
943TEST(MemorySanitizer, strncpy) {  // NOLINT
944  char* x = new char[3];
945  char* y = new char[3];
946  x[0] = 'a';
947  x[1] = *GetPoisoned<char>(1, 1);
948  x[2] = 0;
949  strncpy(y, x, 2);  // NOLINT
950  EXPECT_NOT_POISONED(y[0]);
951  EXPECT_POISONED(y[1]);
952  EXPECT_POISONED(y[2]);
953}
954
955TEST(MemorySanitizer, strtol) {
956  char *e;
957  assert(1 == strtol("1", &e, 10));
958  EXPECT_NOT_POISONED((S8) e);
959}
960
961TEST(MemorySanitizer, strtoll) {
962  char *e;
963  assert(1 == strtoll("1", &e, 10));
964  EXPECT_NOT_POISONED((S8) e);
965}
966
967TEST(MemorySanitizer, strtoul) {
968  char *e;
969  assert(1 == strtoul("1", &e, 10));
970  EXPECT_NOT_POISONED((S8) e);
971}
972
973TEST(MemorySanitizer, strtoull) {
974  char *e;
975  assert(1 == strtoull("1", &e, 10));
976  EXPECT_NOT_POISONED((S8) e);
977}
978
979TEST(MemorySanitizer, strtod) {
980  char *e;
981  assert(0 != strtod("1.5", &e));
982  EXPECT_NOT_POISONED((S8) e);
983}
984
985TEST(MemorySanitizer, strtof) {
986  char *e;
987  assert(0 != strtof("1.5", &e));
988  EXPECT_NOT_POISONED((S8) e);
989}
990
991TEST(MemorySanitizer, strtold) {
992  char *e;
993  assert(0 != strtold("1.5", &e));
994  EXPECT_NOT_POISONED((S8) e);
995}
996
997TEST(MemorySanitizer, modf) {
998  double x, y;
999  x = modf(2.1, &y);
1000  EXPECT_NOT_POISONED(y);
1001}
1002
1003TEST(MemorySanitizer, modff) {
1004  float x, y;
1005  x = modff(2.1, &y);
1006  EXPECT_NOT_POISONED(y);
1007}
1008
1009TEST(MemorySanitizer, modfl) {
1010  long double x, y;
1011  x = modfl(2.1, &y);
1012  EXPECT_NOT_POISONED(y);
1013}
1014
1015TEST(MemorySanitizer, sprintf) {  // NOLINT
1016  char buff[10];
1017  break_optimization(buff);
1018  EXPECT_POISONED(buff[0]);
1019  int res = sprintf(buff, "%d", 1234567);  // NOLINT
1020  assert(res == 7);
1021  assert(buff[0] == '1');
1022  assert(buff[1] == '2');
1023  assert(buff[2] == '3');
1024  assert(buff[6] == '7');
1025  assert(buff[7] == 0);
1026  EXPECT_POISONED(buff[8]);
1027}
1028
1029TEST(MemorySanitizer, snprintf) {
1030  char buff[10];
1031  break_optimization(buff);
1032  EXPECT_POISONED(buff[0]);
1033  int res = snprintf(buff, sizeof(buff), "%d", 1234567);
1034  assert(res == 7);
1035  assert(buff[0] == '1');
1036  assert(buff[1] == '2');
1037  assert(buff[2] == '3');
1038  assert(buff[6] == '7');
1039  assert(buff[7] == 0);
1040  EXPECT_POISONED(buff[8]);
1041}
1042
1043TEST(MemorySanitizer, swprintf) {
1044  wchar_t buff[10];
1045  assert(sizeof(wchar_t) == 4);
1046  break_optimization(buff);
1047  EXPECT_POISONED(buff[0]);
1048  int res = swprintf(buff, 9, L"%d", 1234567);
1049  assert(res == 7);
1050  assert(buff[0] == '1');
1051  assert(buff[1] == '2');
1052  assert(buff[2] == '3');
1053  assert(buff[6] == '7');
1054  assert(buff[7] == 0);
1055  EXPECT_POISONED(buff[8]);
1056}
1057
1058TEST(MemorySanitizer, asprintf) {  // NOLINT
1059  char *pbuf;
1060  EXPECT_POISONED(pbuf);
1061  int res = asprintf(&pbuf, "%d", 1234567);  // NOLINT
1062  assert(res == 7);
1063  EXPECT_NOT_POISONED(pbuf);
1064  assert(pbuf[0] == '1');
1065  assert(pbuf[1] == '2');
1066  assert(pbuf[2] == '3');
1067  assert(pbuf[6] == '7');
1068  assert(pbuf[7] == 0);
1069  free(pbuf);
1070}
1071
1072TEST(MemorySanitizer, wcstombs) {
1073  const wchar_t *x = L"abc";
1074  char buff[10];
1075  int res = wcstombs(buff, x, 4);
1076  EXPECT_EQ(res, 3);
1077  EXPECT_EQ(buff[0], 'a');
1078  EXPECT_EQ(buff[1], 'b');
1079  EXPECT_EQ(buff[2], 'c');
1080}
1081
1082TEST(MemorySanitizer, gettimeofday) {
1083  struct timeval tv;
1084  struct timezone tz;
1085  break_optimization(&tv);
1086  break_optimization(&tz);
1087  assert(sizeof(tv) == 16);
1088  assert(sizeof(tz) == 8);
1089  EXPECT_POISONED(tv.tv_sec);
1090  EXPECT_POISONED(tv.tv_usec);
1091  EXPECT_POISONED(tz.tz_minuteswest);
1092  EXPECT_POISONED(tz.tz_dsttime);
1093  assert(0 == gettimeofday(&tv, &tz));
1094  EXPECT_NOT_POISONED(tv.tv_sec);
1095  EXPECT_NOT_POISONED(tv.tv_usec);
1096  EXPECT_NOT_POISONED(tz.tz_minuteswest);
1097  EXPECT_NOT_POISONED(tz.tz_dsttime);
1098}
1099
1100TEST(MemorySanitizer, clock_gettime) {
1101  struct timespec tp;
1102  EXPECT_POISONED(tp.tv_sec);
1103  EXPECT_POISONED(tp.tv_nsec);
1104  assert(0 == clock_gettime(CLOCK_REALTIME, &tp));
1105  EXPECT_NOT_POISONED(tp.tv_sec);
1106  EXPECT_NOT_POISONED(tp.tv_nsec);
1107}
1108
1109TEST(MemorySanitizer, clock_getres) {
1110  struct timespec tp;
1111  EXPECT_POISONED(tp.tv_sec);
1112  EXPECT_POISONED(tp.tv_nsec);
1113  assert(0 == clock_getres(CLOCK_REALTIME, 0));
1114  EXPECT_POISONED(tp.tv_sec);
1115  EXPECT_POISONED(tp.tv_nsec);
1116  assert(0 == clock_getres(CLOCK_REALTIME, &tp));
1117  EXPECT_NOT_POISONED(tp.tv_sec);
1118  EXPECT_NOT_POISONED(tp.tv_nsec);
1119}
1120
1121TEST(MemorySanitizer, getitimer) {
1122  struct itimerval it1, it2;
1123  int res;
1124  EXPECT_POISONED(it1.it_interval.tv_sec);
1125  EXPECT_POISONED(it1.it_interval.tv_usec);
1126  EXPECT_POISONED(it1.it_value.tv_sec);
1127  EXPECT_POISONED(it1.it_value.tv_usec);
1128  res = getitimer(ITIMER_VIRTUAL, &it1);
1129  assert(!res);
1130  EXPECT_NOT_POISONED(it1.it_interval.tv_sec);
1131  EXPECT_NOT_POISONED(it1.it_interval.tv_usec);
1132  EXPECT_NOT_POISONED(it1.it_value.tv_sec);
1133  EXPECT_NOT_POISONED(it1.it_value.tv_usec);
1134
1135  it1.it_interval.tv_sec = it1.it_value.tv_sec = 10000;
1136  it1.it_interval.tv_usec = it1.it_value.tv_usec = 0;
1137
1138  res = setitimer(ITIMER_VIRTUAL, &it1, &it2);
1139  assert(!res);
1140  EXPECT_NOT_POISONED(it2.it_interval.tv_sec);
1141  EXPECT_NOT_POISONED(it2.it_interval.tv_usec);
1142  EXPECT_NOT_POISONED(it2.it_value.tv_sec);
1143  EXPECT_NOT_POISONED(it2.it_value.tv_usec);
1144
1145  // Check that old_value can be 0, and disable the timer.
1146  memset(&it1, 0, sizeof(it1));
1147  res = setitimer(ITIMER_VIRTUAL, &it1, 0);
1148  assert(!res);
1149}
1150
1151TEST(MemorySanitizer, time) {
1152  time_t t;
1153  EXPECT_POISONED(t);
1154  time_t t2 = time(&t);
1155  assert(t2 != (time_t)-1);
1156  EXPECT_NOT_POISONED(t);
1157}
1158
1159TEST(MemorySanitizer, localtime) {
1160  time_t t = 123;
1161  struct tm *time = localtime(&t);
1162  assert(time != 0);
1163  EXPECT_NOT_POISONED(time->tm_sec);
1164  EXPECT_NOT_POISONED(time->tm_hour);
1165  EXPECT_NOT_POISONED(time->tm_year);
1166  EXPECT_NOT_POISONED(time->tm_isdst);
1167}
1168
1169TEST(MemorySanitizer, localtime_r) {
1170  time_t t = 123;
1171  struct tm time;
1172  struct tm *res = localtime_r(&t, &time);
1173  assert(res != 0);
1174  EXPECT_NOT_POISONED(time.tm_sec);
1175  EXPECT_NOT_POISONED(time.tm_hour);
1176  EXPECT_NOT_POISONED(time.tm_year);
1177  EXPECT_NOT_POISONED(time.tm_isdst);
1178}
1179
1180TEST(MemorySanitizer, mmap) {
1181  const int size = 4096;
1182  void *p1, *p2;
1183  p1 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1184  __msan_poison(p1, size);
1185  munmap(p1, size);
1186  for (int i = 0; i < 1000; i++) {
1187    p2 = mmap(0, size, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, -1, 0);
1188    if (p2 == p1)
1189      break;
1190    else
1191      munmap(p2, size);
1192  }
1193  if (p1 == p2) {
1194    EXPECT_NOT_POISONED(*(char*)p2);
1195    munmap(p2, size);
1196  }
1197}
1198
1199// FIXME: enable and add ecvt.
1200// FIXME: check why msandr does nt handle fcvt.
1201TEST(MemorySanitizer, fcvt) {
1202  int a, b;
1203  break_optimization(&a);
1204  break_optimization(&b);
1205  EXPECT_POISONED(a);
1206  EXPECT_POISONED(b);
1207  char *str = fcvt(12345.6789, 10, &a, &b);
1208  EXPECT_NOT_POISONED(a);
1209  EXPECT_NOT_POISONED(b);
1210}
1211
1212TEST(MemorySanitizer, frexp) {
1213  int x;
1214  x = *GetPoisoned<int>();
1215  double r = frexp(1.1, &x);
1216  EXPECT_NOT_POISONED(r);
1217  EXPECT_NOT_POISONED(x);
1218
1219  x = *GetPoisoned<int>();
1220  float rf = frexpf(1.1, &x);
1221  EXPECT_NOT_POISONED(rf);
1222  EXPECT_NOT_POISONED(x);
1223
1224  x = *GetPoisoned<int>();
1225  double rl = frexpl(1.1, &x);
1226  EXPECT_NOT_POISONED(rl);
1227  EXPECT_NOT_POISONED(x);
1228}
1229
1230namespace {
1231
1232static int cnt;
1233
1234void SigactionHandler(int signo, siginfo_t* si, void* uc) {
1235  assert(signo == SIGPROF);
1236  assert(si);
1237  EXPECT_NOT_POISONED(si->si_errno);
1238  EXPECT_NOT_POISONED(si->si_pid);
1239#if __linux__
1240# if defined(__x86_64__)
1241  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_RIP]);
1242# elif defined(__i386__)
1243  EXPECT_NOT_POISONED(((ucontext_t*)uc)->uc_mcontext.gregs[REG_EIP]);
1244# endif
1245#endif
1246  ++cnt;
1247}
1248
1249TEST(MemorySanitizer, sigaction) {
1250  struct sigaction act = {};
1251  struct sigaction oldact = {};
1252  struct sigaction origact = {};
1253
1254  sigaction(SIGPROF, 0, &origact);
1255
1256  act.sa_flags |= SA_SIGINFO;
1257  act.sa_sigaction = &SigactionHandler;
1258  sigaction(SIGPROF, &act, 0);
1259
1260  kill(getpid(), SIGPROF);
1261
1262  act.sa_flags &= ~SA_SIGINFO;
1263  act.sa_handler = SIG_DFL;
1264  sigaction(SIGPROF, &act, 0);
1265
1266  act.sa_flags &= ~SA_SIGINFO;
1267  act.sa_handler = SIG_IGN;
1268  sigaction(SIGPROF, &act, &oldact);
1269  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1270  EXPECT_EQ(SIG_DFL, oldact.sa_handler);
1271  kill(getpid(), SIGPROF);
1272
1273  act.sa_flags |= SA_SIGINFO;
1274  act.sa_sigaction = &SigactionHandler;
1275  sigaction(SIGPROF, &act, &oldact);
1276  EXPECT_FALSE(oldact.sa_flags & SA_SIGINFO);
1277  EXPECT_EQ(SIG_IGN, oldact.sa_handler);
1278  kill(getpid(), SIGPROF);
1279
1280  act.sa_flags &= ~SA_SIGINFO;
1281  act.sa_handler = SIG_DFL;
1282  sigaction(SIGPROF, &act, &oldact);
1283  EXPECT_TRUE(oldact.sa_flags & SA_SIGINFO);
1284  EXPECT_EQ(&SigactionHandler, oldact.sa_sigaction);
1285  EXPECT_EQ(2, cnt);
1286
1287  sigaction(SIGPROF, &origact, 0);
1288}
1289
1290} // namespace
1291
1292struct StructWithDtor {
1293  ~StructWithDtor();
1294};
1295
1296NOINLINE StructWithDtor::~StructWithDtor() {
1297  break_optimization(0);
1298}
1299
1300TEST(MemorySanitizer, Invoke) {
1301  StructWithDtor s;  // Will cause the calls to become invokes.
1302  EXPECT_NOT_POISONED(0);
1303  EXPECT_POISONED(*GetPoisoned<int>());
1304  EXPECT_NOT_POISONED(0);
1305  EXPECT_POISONED(*GetPoisoned<int>());
1306  EXPECT_POISONED(ReturnPoisoned<S4>());
1307}
1308
1309TEST(MemorySanitizer, ptrtoint) {
1310  // Test that shadow is propagated through pointer-to-integer conversion.
1311  void* p = (void*)0xABCD;
1312  __msan_poison(((char*)&p) + 1, sizeof(p));
1313  EXPECT_NOT_POISONED((((uintptr_t)p) & 0xFF) == 0);
1314
1315  void* q = (void*)0xABCD;
1316  __msan_poison(&q, sizeof(q) - 1);
1317  EXPECT_POISONED((((uintptr_t)q) & 0xFF) == 0);
1318}
1319
1320static void vaargsfn2(int guard, ...) {
1321  va_list vl;
1322  va_start(vl, guard);
1323  EXPECT_NOT_POISONED(va_arg(vl, int));
1324  EXPECT_NOT_POISONED(va_arg(vl, int));
1325  EXPECT_NOT_POISONED(va_arg(vl, int));
1326  EXPECT_POISONED(va_arg(vl, double));
1327  va_end(vl);
1328}
1329
1330static void vaargsfn(int guard, ...) {
1331  va_list vl;
1332  va_start(vl, guard);
1333  EXPECT_NOT_POISONED(va_arg(vl, int));
1334  EXPECT_POISONED(va_arg(vl, int));
1335  // The following call will overwrite __msan_param_tls.
1336  // Checks after it test that arg shadow was somehow saved across the call.
1337  vaargsfn2(1, 2, 3, 4, *GetPoisoned<double>());
1338  EXPECT_NOT_POISONED(va_arg(vl, int));
1339  EXPECT_POISONED(va_arg(vl, int));
1340  va_end(vl);
1341}
1342
1343TEST(MemorySanitizer, VAArgTest) {
1344  int* x = GetPoisoned<int>();
1345  int* y = GetPoisoned<int>(4);
1346  vaargsfn(1, 13, *x, 42, *y);
1347}
1348
1349static void vaargsfn_many(int guard, ...) {
1350  va_list vl;
1351  va_start(vl, guard);
1352  EXPECT_NOT_POISONED(va_arg(vl, int));
1353  EXPECT_POISONED(va_arg(vl, int));
1354  EXPECT_NOT_POISONED(va_arg(vl, int));
1355  EXPECT_NOT_POISONED(va_arg(vl, int));
1356  EXPECT_NOT_POISONED(va_arg(vl, int));
1357  EXPECT_NOT_POISONED(va_arg(vl, int));
1358  EXPECT_NOT_POISONED(va_arg(vl, int));
1359  EXPECT_NOT_POISONED(va_arg(vl, int));
1360  EXPECT_NOT_POISONED(va_arg(vl, int));
1361  EXPECT_POISONED(va_arg(vl, int));
1362  va_end(vl);
1363}
1364
1365TEST(MemorySanitizer, VAArgManyTest) {
1366  int* x = GetPoisoned<int>();
1367  int* y = GetPoisoned<int>(4);
1368  vaargsfn_many(1, 2, *x, 3, 4, 5, 6, 7, 8, 9, *y);
1369}
1370
1371static void vaargsfn_pass2(va_list vl) {
1372  EXPECT_NOT_POISONED(va_arg(vl, int));
1373  EXPECT_NOT_POISONED(va_arg(vl, int));
1374  EXPECT_POISONED(va_arg(vl, int));
1375}
1376
1377static void vaargsfn_pass(int guard, ...) {
1378  va_list vl;
1379  va_start(vl, guard);
1380  EXPECT_POISONED(va_arg(vl, int));
1381  vaargsfn_pass2(vl);
1382  va_end(vl);
1383}
1384
1385TEST(MemorySanitizer, VAArgPass) {
1386  int* x = GetPoisoned<int>();
1387  int* y = GetPoisoned<int>(4);
1388  vaargsfn_pass(1, *x, 2, 3, *y);
1389}
1390
1391static void vaargsfn_copy2(va_list vl) {
1392  EXPECT_NOT_POISONED(va_arg(vl, int));
1393  EXPECT_POISONED(va_arg(vl, int));
1394}
1395
1396static void vaargsfn_copy(int guard, ...) {
1397  va_list vl;
1398  va_start(vl, guard);
1399  EXPECT_NOT_POISONED(va_arg(vl, int));
1400  EXPECT_POISONED(va_arg(vl, int));
1401  va_list vl2;
1402  va_copy(vl2, vl);
1403  vaargsfn_copy2(vl2);
1404  EXPECT_NOT_POISONED(va_arg(vl, int));
1405  EXPECT_POISONED(va_arg(vl, int));
1406  va_end(vl);
1407}
1408
1409TEST(MemorySanitizer, VAArgCopy) {
1410  int* x = GetPoisoned<int>();
1411  int* y = GetPoisoned<int>(4);
1412  vaargsfn_copy(1, 2, *x, 3, *y);
1413}
1414
1415static void vaargsfn_ptr(int guard, ...) {
1416  va_list vl;
1417  va_start(vl, guard);
1418  EXPECT_NOT_POISONED(va_arg(vl, int*));
1419  EXPECT_POISONED(va_arg(vl, int*));
1420  EXPECT_NOT_POISONED(va_arg(vl, int*));
1421  EXPECT_POISONED(va_arg(vl, double*));
1422  va_end(vl);
1423}
1424
1425TEST(MemorySanitizer, VAArgPtr) {
1426  int** x = GetPoisoned<int*>();
1427  double** y = GetPoisoned<double*>(8);
1428  int z;
1429  vaargsfn_ptr(1, &z, *x, &z, *y);
1430}
1431
1432static void vaargsfn_overflow(int guard, ...) {
1433  va_list vl;
1434  va_start(vl, guard);
1435  EXPECT_NOT_POISONED(va_arg(vl, int));
1436  EXPECT_NOT_POISONED(va_arg(vl, int));
1437  EXPECT_POISONED(va_arg(vl, int));
1438  EXPECT_NOT_POISONED(va_arg(vl, int));
1439  EXPECT_NOT_POISONED(va_arg(vl, int));
1440  EXPECT_NOT_POISONED(va_arg(vl, int));
1441
1442  EXPECT_NOT_POISONED(va_arg(vl, double));
1443  EXPECT_NOT_POISONED(va_arg(vl, double));
1444  EXPECT_NOT_POISONED(va_arg(vl, double));
1445  EXPECT_POISONED(va_arg(vl, double));
1446  EXPECT_NOT_POISONED(va_arg(vl, double));
1447  EXPECT_POISONED(va_arg(vl, int*));
1448  EXPECT_NOT_POISONED(va_arg(vl, double));
1449  EXPECT_NOT_POISONED(va_arg(vl, double));
1450
1451  EXPECT_POISONED(va_arg(vl, int));
1452  EXPECT_POISONED(va_arg(vl, double));
1453  EXPECT_POISONED(va_arg(vl, int*));
1454
1455  EXPECT_NOT_POISONED(va_arg(vl, int));
1456  EXPECT_NOT_POISONED(va_arg(vl, double));
1457  EXPECT_NOT_POISONED(va_arg(vl, int*));
1458
1459  EXPECT_POISONED(va_arg(vl, int));
1460  EXPECT_POISONED(va_arg(vl, double));
1461  EXPECT_POISONED(va_arg(vl, int*));
1462
1463  va_end(vl);
1464}
1465
1466TEST(MemorySanitizer, VAArgOverflow) {
1467  int* x = GetPoisoned<int>();
1468  double* y = GetPoisoned<double>(8);
1469  int** p = GetPoisoned<int*>(16);
1470  int z;
1471  vaargsfn_overflow(1,
1472      1, 2, *x, 4, 5, 6,
1473      1.1, 2.2, 3.3, *y, 5.5, *p, 7.7, 8.8,
1474      // the following args will overflow for sure
1475      *x, *y, *p,
1476      7, 9.9, &z,
1477      *x, *y, *p);
1478}
1479
1480static void vaargsfn_tlsoverwrite2(int guard, ...) {
1481  va_list vl;
1482  va_start(vl, guard);
1483  EXPECT_NOT_POISONED(va_arg(vl, int));
1484  va_end(vl);
1485}
1486
1487static void vaargsfn_tlsoverwrite(int guard, ...) {
1488  // This call will overwrite TLS contents unless it's backed up somewhere.
1489  vaargsfn_tlsoverwrite2(2, 42);
1490  va_list vl;
1491  va_start(vl, guard);
1492  EXPECT_POISONED(va_arg(vl, int));
1493  va_end(vl);
1494}
1495
1496TEST(MemorySanitizer, VAArgTLSOverwrite) {
1497  int* x = GetPoisoned<int>();
1498  vaargsfn_tlsoverwrite(1, *x);
1499}
1500
1501struct StructByVal {
1502  int a, b, c, d, e, f;
1503};
1504
1505NOINLINE void StructByValTestFunc(struct StructByVal s) {
1506  EXPECT_NOT_POISONED(s.a);
1507  EXPECT_POISONED(s.b);
1508  EXPECT_NOT_POISONED(s.c);
1509  EXPECT_POISONED(s.d);
1510  EXPECT_NOT_POISONED(s.e);
1511  EXPECT_POISONED(s.f);
1512}
1513
1514NOINLINE void StructByValTestFunc1(struct StructByVal s) {
1515  StructByValTestFunc(s);
1516}
1517
1518NOINLINE void StructByValTestFunc2(int z, struct StructByVal s) {
1519  StructByValTestFunc(s);
1520}
1521
1522TEST(MemorySanitizer, StructByVal) {
1523  // Large aggregates are passed as "byval" pointer argument in LLVM.
1524  struct StructByVal s;
1525  s.a = 1;
1526  s.b = *GetPoisoned<int>();
1527  s.c = 2;
1528  s.d = *GetPoisoned<int>();
1529  s.e = 3;
1530  s.f = *GetPoisoned<int>();
1531  StructByValTestFunc(s);
1532  StructByValTestFunc1(s);
1533  StructByValTestFunc2(0, s);
1534}
1535
1536
1537#if MSAN_HAS_M128
1538NOINLINE __m128i m128Eq(__m128i *a, __m128i *b) { return _mm_cmpeq_epi16(*a, *b); }
1539NOINLINE __m128i m128Lt(__m128i *a, __m128i *b) { return _mm_cmplt_epi16(*a, *b); }
1540TEST(MemorySanitizer, m128) {
1541  __m128i a = _mm_set1_epi16(0x1234);
1542  __m128i b = _mm_set1_epi16(0x7890);
1543  EXPECT_NOT_POISONED(m128Eq(&a, &b));
1544  EXPECT_NOT_POISONED(m128Lt(&a, &b));
1545}
1546// FIXME: add more tests for __m128i.
1547#endif  // MSAN_HAS_M128
1548
1549// We should not complain when copying this poisoned hole.
1550struct StructWithHole {
1551  U4  a;
1552  // 4-byte hole.
1553  U8  b;
1554};
1555
1556NOINLINE StructWithHole ReturnStructWithHole() {
1557  StructWithHole res;
1558  __msan_poison(&res, sizeof(res));
1559  res.a = 1;
1560  res.b = 2;
1561  return res;
1562}
1563
1564TEST(MemorySanitizer, StructWithHole) {
1565  StructWithHole a = ReturnStructWithHole();
1566  break_optimization(&a);
1567}
1568
1569template <class T>
1570NOINLINE T ReturnStruct() {
1571  T res;
1572  __msan_poison(&res, sizeof(res));
1573  res.a = 1;
1574  return res;
1575}
1576
1577template <class T>
1578NOINLINE void TestReturnStruct() {
1579  T s1 = ReturnStruct<T>();
1580  EXPECT_NOT_POISONED(s1.a);
1581  EXPECT_POISONED(s1.b);
1582}
1583
1584struct SSS1 {
1585  int a, b, c;
1586};
1587struct SSS2 {
1588  int b, a, c;
1589};
1590struct SSS3 {
1591  int b, c, a;
1592};
1593struct SSS4 {
1594  int c, b, a;
1595};
1596
1597struct SSS5 {
1598  int a;
1599  float b;
1600};
1601struct SSS6 {
1602  int a;
1603  double b;
1604};
1605struct SSS7 {
1606  S8 b;
1607  int a;
1608};
1609struct SSS8 {
1610  S2 b;
1611  S8 a;
1612};
1613
1614TEST(MemorySanitizer, IntStruct3) {
1615  TestReturnStruct<SSS1>();
1616  TestReturnStruct<SSS2>();
1617  TestReturnStruct<SSS3>();
1618  TestReturnStruct<SSS4>();
1619  TestReturnStruct<SSS5>();
1620  TestReturnStruct<SSS6>();
1621  TestReturnStruct<SSS7>();
1622  TestReturnStruct<SSS8>();
1623}
1624
1625struct LongStruct {
1626  U1 a1, b1;
1627  U2 a2, b2;
1628  U4 a4, b4;
1629  U8 a8, b8;
1630};
1631
1632NOINLINE LongStruct ReturnLongStruct1() {
1633  LongStruct res;
1634  __msan_poison(&res, sizeof(res));
1635  res.a1 = res.a2 = res.a4 = res.a8 = 111;
1636  // leaves b1, .., b8 poisoned.
1637  return res;
1638}
1639
1640NOINLINE LongStruct ReturnLongStruct2() {
1641  LongStruct res;
1642  __msan_poison(&res, sizeof(res));
1643  res.b1 = res.b2 = res.b4 = res.b8 = 111;
1644  // leaves a1, .., a8 poisoned.
1645  return res;
1646}
1647
1648TEST(MemorySanitizer, LongStruct) {
1649  LongStruct s1 = ReturnLongStruct1();
1650  __msan_print_shadow(&s1, sizeof(s1));
1651  EXPECT_NOT_POISONED(s1.a1);
1652  EXPECT_NOT_POISONED(s1.a2);
1653  EXPECT_NOT_POISONED(s1.a4);
1654  EXPECT_NOT_POISONED(s1.a8);
1655
1656  EXPECT_POISONED(s1.b1);
1657  EXPECT_POISONED(s1.b2);
1658  EXPECT_POISONED(s1.b4);
1659  EXPECT_POISONED(s1.b8);
1660
1661  LongStruct s2 = ReturnLongStruct2();
1662  __msan_print_shadow(&s2, sizeof(s2));
1663  EXPECT_NOT_POISONED(s2.b1);
1664  EXPECT_NOT_POISONED(s2.b2);
1665  EXPECT_NOT_POISONED(s2.b4);
1666  EXPECT_NOT_POISONED(s2.b8);
1667
1668  EXPECT_POISONED(s2.a1);
1669  EXPECT_POISONED(s2.a2);
1670  EXPECT_POISONED(s2.a4);
1671  EXPECT_POISONED(s2.a8);
1672}
1673
1674TEST(MemorySanitizer, getrlimit) {
1675  struct rlimit limit;
1676  __msan_poison(&limit, sizeof(limit));
1677  int result = getrlimit(RLIMIT_DATA, &limit);
1678  assert(result == 0);
1679  EXPECT_NOT_POISONED(limit.rlim_cur);
1680  EXPECT_NOT_POISONED(limit.rlim_max);
1681}
1682
1683TEST(MemorySanitizer, getrusage) {
1684  struct rusage usage;
1685  __msan_poison(&usage, sizeof(usage));
1686  int result = getrusage(RUSAGE_SELF, &usage);
1687  assert(result == 0);
1688  EXPECT_NOT_POISONED(usage.ru_utime.tv_sec);
1689  EXPECT_NOT_POISONED(usage.ru_utime.tv_usec);
1690  EXPECT_NOT_POISONED(usage.ru_stime.tv_sec);
1691  EXPECT_NOT_POISONED(usage.ru_stime.tv_usec);
1692  EXPECT_NOT_POISONED(usage.ru_maxrss);
1693  EXPECT_NOT_POISONED(usage.ru_minflt);
1694  EXPECT_NOT_POISONED(usage.ru_majflt);
1695  EXPECT_NOT_POISONED(usage.ru_inblock);
1696  EXPECT_NOT_POISONED(usage.ru_oublock);
1697  EXPECT_NOT_POISONED(usage.ru_nvcsw);
1698  EXPECT_NOT_POISONED(usage.ru_nivcsw);
1699}
1700
1701#ifdef __GLIBC__
1702extern char *program_invocation_name;
1703#else  // __GLIBC__
1704# error "TODO: port this"
1705#endif
1706
1707// Compute the path to our loadable DSO.  We assume it's in the same
1708// directory.  Only use string routines that we intercept so far to do this.
1709static int PathToLoadable(char *buf, size_t sz) {
1710  const char *basename = "libmsan_loadable.x86_64.so";
1711  char *argv0 = program_invocation_name;
1712  char *last_slash = strrchr(argv0, '/');
1713  assert(last_slash);
1714  int res =
1715      snprintf(buf, sz, "%.*s/%s", int(last_slash - argv0), argv0, basename);
1716  return res < sz ? 0 : res;
1717}
1718
1719static void dladdr_testfn() {}
1720
1721TEST(MemorySanitizer, dladdr) {
1722  Dl_info info;
1723  __msan_poison(&info, sizeof(info));
1724  int result = dladdr((const void*)dladdr_testfn, &info);
1725  assert(result != 0);
1726  EXPECT_NOT_POISONED((unsigned long)info.dli_fname);
1727  if (info.dli_fname)
1728    EXPECT_NOT_POISONED(strlen(info.dli_fname));
1729  EXPECT_NOT_POISONED((unsigned long)info.dli_fbase);
1730  EXPECT_NOT_POISONED((unsigned long)info.dli_sname);
1731  if (info.dli_sname)
1732    EXPECT_NOT_POISONED(strlen(info.dli_sname));
1733  EXPECT_NOT_POISONED((unsigned long)info.dli_saddr);
1734}
1735
1736static int dl_phdr_callback(struct dl_phdr_info *info, size_t size, void *data) {
1737  (*(int *)data)++;
1738  EXPECT_NOT_POISONED(info->dlpi_addr);
1739  EXPECT_NOT_POISONED(strlen(info->dlpi_name));
1740  EXPECT_NOT_POISONED(info->dlpi_phnum);
1741  for (int i = 0; i < info->dlpi_phnum; ++i)
1742    EXPECT_NOT_POISONED(info->dlpi_phdr[i]);
1743  return 0;
1744}
1745
1746TEST(MemorySanitizer, dl_iterate_phdr) {
1747  char path[4096];
1748  int res = PathToLoadable(path, sizeof(path));
1749  assert(!res);
1750
1751  // Having at least one dlopen'ed library in the process makes this more
1752  // entertaining.
1753  void *lib = dlopen(path, RTLD_LAZY);
1754  ASSERT_NE((void*)0, lib);
1755
1756  int count = 0;
1757  int result = dl_iterate_phdr(dl_phdr_callback, &count);
1758  assert(count > 0);
1759
1760  dlclose(lib);
1761}
1762
1763
1764TEST(MemorySanitizer, dlopen) {
1765  char path[4096];
1766  int res = PathToLoadable(path, sizeof(path));
1767  assert(!res);
1768
1769  // We need to clear shadow for globals when doing dlopen.  In order to test
1770  // this, we have to poison the shadow for the DSO before we load it.  In
1771  // general this is difficult, but the loader tends to reload things in the
1772  // same place, so we open, close, and then reopen.  The global should always
1773  // start out clean after dlopen.
1774  for (int i = 0; i < 2; i++) {
1775    void *lib = dlopen(path, RTLD_LAZY);
1776    if (lib == NULL) {
1777      printf("dlerror: %s\n", dlerror());
1778      assert(lib != NULL);
1779    }
1780    void **(*get_dso_global)() = (void **(*)())dlsym(lib, "get_dso_global");
1781    assert(get_dso_global);
1782    void **dso_global = get_dso_global();
1783    EXPECT_NOT_POISONED(*dso_global);
1784    __msan_poison(dso_global, sizeof(*dso_global));
1785    EXPECT_POISONED(*dso_global);
1786    dlclose(lib);
1787  }
1788}
1789
1790// Regression test for a crash in dlopen() interceptor.
1791TEST(MemorySanitizer, dlopenFailed) {
1792  const char *path = "/libmsan_loadable_does_not_exist.x86_64.so";
1793  void *lib = dlopen(path, RTLD_LAZY);
1794  ASSERT_EQ(0, lib);
1795}
1796
1797TEST(MemorySanitizer, scanf) {
1798  const char *input = "42 hello";
1799  int* d = new int;
1800  char* s = new char[7];
1801  int res = sscanf(input, "%d %5s", d, s);
1802  printf("res %d\n", res);
1803  assert(res == 2);
1804  EXPECT_NOT_POISONED(*d);
1805  EXPECT_NOT_POISONED(s[0]);
1806  EXPECT_NOT_POISONED(s[1]);
1807  EXPECT_NOT_POISONED(s[2]);
1808  EXPECT_NOT_POISONED(s[3]);
1809  EXPECT_NOT_POISONED(s[4]);
1810  EXPECT_NOT_POISONED(s[5]);
1811  EXPECT_POISONED(s[6]);
1812  delete s;
1813  delete d;
1814}
1815
1816static void *SimpleThread_threadfn(void* data) {
1817  return new int;
1818}
1819
1820TEST(MemorySanitizer, SimpleThread) {
1821  pthread_t t;
1822  void *p;
1823  int res = pthread_create(&t, NULL, SimpleThread_threadfn, NULL);
1824  assert(!res);
1825  EXPECT_NOT_POISONED(t);
1826  res = pthread_join(t, &p);
1827  assert(!res);
1828  if (!__msan_has_dynamic_component())  // FIXME: intercept pthread_join (?).
1829    __msan_unpoison(&p, sizeof(p));
1830  delete (int*)p;
1831}
1832
1833static void *SmallStackThread_threadfn(void* data) {
1834  return 0;
1835}
1836
1837TEST(MemorySanitizer, SmallStackThread) {
1838  pthread_attr_t attr;
1839  pthread_t t;
1840  void *p;
1841  int res;
1842  res = pthread_attr_init(&attr);
1843  ASSERT_EQ(0, res);
1844  res = pthread_attr_setstacksize(&attr, 64 * 1024);
1845  ASSERT_EQ(0, res);
1846  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
1847  ASSERT_EQ(0, res);
1848  res = pthread_join(t, &p);
1849  ASSERT_EQ(0, res);
1850  res = pthread_attr_destroy(&attr);
1851  ASSERT_EQ(0, res);
1852}
1853
1854TEST(MemorySanitizer, PreAllocatedStackThread) {
1855  pthread_attr_t attr;
1856  pthread_t t;
1857  int res;
1858  res = pthread_attr_init(&attr);
1859  ASSERT_EQ(0, res);
1860  void *stack;
1861  const size_t kStackSize = 64 * 1024;
1862  res = posix_memalign(&stack, 4096, kStackSize);
1863  ASSERT_EQ(0, res);
1864  res = pthread_attr_setstack(&attr, stack, kStackSize);
1865  ASSERT_EQ(0, res);
1866  // A small self-allocated stack can not be extended by the tool.
1867  // In this case pthread_create is expected to fail.
1868  res = pthread_create(&t, &attr, SmallStackThread_threadfn, NULL);
1869  EXPECT_NE(0, res);
1870  res = pthread_attr_destroy(&attr);
1871  ASSERT_EQ(0, res);
1872}
1873
1874TEST(MemorySanitizer, pthread_getschedparam) {
1875  int policy;
1876  struct sched_param param;
1877  int res = pthread_getschedparam(pthread_self(), &policy, &param);
1878  ASSERT_EQ(0, res);
1879  EXPECT_NOT_POISONED(policy);
1880  EXPECT_NOT_POISONED(param.sched_priority);
1881}
1882
1883TEST(MemorySanitizer, posix_memalign) {
1884  void *p;
1885  EXPECT_POISONED(p);
1886  int res = posix_memalign(&p, 4096, 13);
1887  ASSERT_EQ(0, res);
1888  EXPECT_NOT_POISONED(p);
1889  free(p);
1890}
1891
1892TEST(MemorySanitizer, inet_pton) {
1893  const char *s = "1:0:0:0:0:0:0:8";
1894  unsigned char buf[sizeof(struct in6_addr)];
1895  int res = inet_pton(AF_INET6, s, buf);
1896  ASSERT_EQ(1, res);
1897  EXPECT_NOT_POISONED(buf[0]);
1898  EXPECT_NOT_POISONED(buf[sizeof(struct in6_addr) - 1]);
1899
1900  char s_out[INET6_ADDRSTRLEN];
1901  EXPECT_POISONED(s_out[3]);
1902  const char *q = inet_ntop(AF_INET6, buf, s_out, INET6_ADDRSTRLEN);
1903  ASSERT_NE((void*)0, q);
1904  EXPECT_NOT_POISONED(s_out[3]);
1905}
1906
1907TEST(MemorySanitizer, uname) {
1908  struct utsname u;
1909  int res = uname(&u);
1910  assert(!res);
1911  EXPECT_NOT_POISONED(strlen(u.sysname));
1912  EXPECT_NOT_POISONED(strlen(u.nodename));
1913  EXPECT_NOT_POISONED(strlen(u.release));
1914  EXPECT_NOT_POISONED(strlen(u.version));
1915  EXPECT_NOT_POISONED(strlen(u.machine));
1916}
1917
1918TEST(MemorySanitizer, gethostname) {
1919  char buf[100];
1920  int res = gethostname(buf, 100);
1921  assert(!res);
1922  EXPECT_NOT_POISONED(strlen(buf));
1923}
1924
1925TEST(MemorySanitizer, getpwuid) {
1926  struct passwd *p = getpwuid(0); // root
1927  assert(p);
1928  EXPECT_NOT_POISONED(p->pw_name);
1929  assert(p->pw_name);
1930  EXPECT_NOT_POISONED(p->pw_name[0]);
1931  EXPECT_NOT_POISONED(p->pw_uid);
1932  assert(p->pw_uid == 0);
1933}
1934
1935TEST(MemorySanitizer, getpwnam_r) {
1936  struct passwd pwd;
1937  struct passwd *pwdres;
1938  char buf[10000];
1939  int res = getpwnam_r("root", &pwd, buf, sizeof(buf), &pwdres);
1940  assert(!res);
1941  EXPECT_NOT_POISONED(pwd.pw_name);
1942  assert(pwd.pw_name);
1943  EXPECT_NOT_POISONED(pwd.pw_name[0]);
1944  EXPECT_NOT_POISONED(pwd.pw_uid);
1945  assert(pwd.pw_uid == 0);
1946}
1947
1948TEST(MemorySanitizer, getpwnam_r_positive) {
1949  struct passwd pwd;
1950  struct passwd *pwdres;
1951  char s[5];
1952  strncpy(s, "abcd", 5);
1953  __msan_poison(s, 5);
1954  char buf[10000];
1955  int res;
1956  EXPECT_UMR(res = getpwnam_r(s, &pwd, buf, sizeof(buf), &pwdres));
1957}
1958
1959TEST(MemorySanitizer, getgrnam_r) {
1960  struct group grp;
1961  struct group *grpres;
1962  char buf[10000];
1963  int res = getgrnam_r("root", &grp, buf, sizeof(buf), &grpres);
1964  assert(!res);
1965  EXPECT_NOT_POISONED(grp.gr_name);
1966  assert(grp.gr_name);
1967  EXPECT_NOT_POISONED(grp.gr_name[0]);
1968  EXPECT_NOT_POISONED(grp.gr_gid);
1969}
1970
1971template<class T>
1972static bool applySlt(T value, T shadow) {
1973  __msan_partial_poison(&value, &shadow, sizeof(T));
1974  volatile bool zzz = true;
1975  // This "|| zzz" trick somehow makes LLVM emit "icmp slt" instead of
1976  // a shift-and-trunc to get at the highest bit.
1977  volatile bool v = value < 0 || zzz;
1978  return v;
1979}
1980
1981TEST(MemorySanitizer, SignedCompareWithZero) {
1982  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xF));
1983  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFF));
1984  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0xFFFFFF));
1985  EXPECT_NOT_POISONED(applySlt<S4>(0xF, 0x7FFFFFF));
1986  EXPECT_UMR(applySlt<S4>(0xF, 0x80FFFFFF));
1987  EXPECT_UMR(applySlt<S4>(0xF, 0xFFFFFFFF));
1988}
1989
1990template <class T, class S>
1991static T poisoned(T Va, S Sa) {
1992  char SIZE_CHECK1[(ssize_t)sizeof(T) - (ssize_t)sizeof(S)];
1993  char SIZE_CHECK2[(ssize_t)sizeof(S) - (ssize_t)sizeof(T)];
1994  T a;
1995  a = Va;
1996  __msan_partial_poison(&a, &Sa, sizeof(T));
1997  return a;
1998}
1999
2000TEST(MemorySanitizer, ICmpRelational) {
2001  EXPECT_NOT_POISONED(poisoned(0, 0) < poisoned(0, 0));
2002  EXPECT_NOT_POISONED(poisoned(0U, 0) < poisoned(0U, 0));
2003  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) < poisoned(0LL, 0LLU));
2004  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) < poisoned(0LLU, 0LLU));
2005  EXPECT_POISONED(poisoned(0xFF, 0xFF) < poisoned(0xFF, 0xFF));
2006  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <
2007                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2008  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <
2009                  poisoned(-1, 0xFFFFFFFFU));
2010
2011  EXPECT_NOT_POISONED(poisoned(0, 0) <= poisoned(0, 0));
2012  EXPECT_NOT_POISONED(poisoned(0U, 0) <= poisoned(0U, 0));
2013  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) <= poisoned(0LL, 0LLU));
2014  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) <= poisoned(0LLU, 0LLU));
2015  EXPECT_POISONED(poisoned(0xFF, 0xFF) <= poisoned(0xFF, 0xFF));
2016  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) <=
2017                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2018  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) <=
2019                  poisoned(-1, 0xFFFFFFFFU));
2020
2021  EXPECT_NOT_POISONED(poisoned(0, 0) > poisoned(0, 0));
2022  EXPECT_NOT_POISONED(poisoned(0U, 0) > poisoned(0U, 0));
2023  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) > poisoned(0LL, 0LLU));
2024  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) > poisoned(0LLU, 0LLU));
2025  EXPECT_POISONED(poisoned(0xFF, 0xFF) > poisoned(0xFF, 0xFF));
2026  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >
2027                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2028  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >
2029                  poisoned(-1, 0xFFFFFFFFU));
2030
2031  EXPECT_NOT_POISONED(poisoned(0, 0) >= poisoned(0, 0));
2032  EXPECT_NOT_POISONED(poisoned(0U, 0) >= poisoned(0U, 0));
2033  EXPECT_NOT_POISONED(poisoned(0LL, 0LLU) >= poisoned(0LL, 0LLU));
2034  EXPECT_NOT_POISONED(poisoned(0LLU, 0LLU) >= poisoned(0LLU, 0LLU));
2035  EXPECT_POISONED(poisoned(0xFF, 0xFF) >= poisoned(0xFF, 0xFF));
2036  EXPECT_POISONED(poisoned(0xFFFFFFFFU, 0xFFFFFFFFU) >=
2037                  poisoned(0xFFFFFFFFU, 0xFFFFFFFFU));
2038  EXPECT_POISONED(poisoned(-1, 0xFFFFFFFFU) >=
2039                  poisoned(-1, 0xFFFFFFFFU));
2040
2041  EXPECT_POISONED(poisoned(6, 0xF) > poisoned(7, 0));
2042  EXPECT_POISONED(poisoned(0xF, 0xF) > poisoned(7, 0));
2043
2044  EXPECT_NOT_POISONED(poisoned(-1, 0x80000000U) >= poisoned(-1, 0U));
2045}
2046
2047#if MSAN_HAS_M128
2048TEST(MemorySanitizer, ICmpVectorRelational) {
2049  EXPECT_NOT_POISONED(
2050      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0)),
2051                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0))));
2052  EXPECT_NOT_POISONED(
2053      _mm_cmplt_epi16(poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0)),
2054                   poisoned(_mm_set1_epi32(0), _mm_set1_epi32(0))));
2055  EXPECT_POISONED(
2056      _mm_cmplt_epi16(poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF)),
2057                   poisoned(_mm_set1_epi16(0), _mm_set1_epi16(0xFFFF))));
2058  EXPECT_POISONED(_mm_cmpgt_epi16(poisoned(_mm_set1_epi16(6), _mm_set1_epi16(0xF)),
2059                               poisoned(_mm_set1_epi16(7), _mm_set1_epi16(0))));
2060}
2061#endif
2062
2063// Volatile bitfield store is implemented as load-mask-store
2064// Test that we don't warn on the store of (uninitialized) padding.
2065struct VolatileBitfieldStruct {
2066  volatile unsigned x : 1;
2067  unsigned y : 1;
2068};
2069
2070TEST(MemorySanitizer, VolatileBitfield) {
2071  VolatileBitfieldStruct *S = new VolatileBitfieldStruct;
2072  S->x = 1;
2073  EXPECT_NOT_POISONED((unsigned)S->x);
2074  EXPECT_POISONED((unsigned)S->y);
2075}
2076
2077TEST(MemorySanitizer, UnalignedLoad) {
2078  char x[32];
2079  memset(x + 8, 0, 16);
2080  EXPECT_POISONED(__sanitizer_unaligned_load16(x+6));
2081  EXPECT_POISONED(__sanitizer_unaligned_load16(x+7));
2082  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+8));
2083  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+9));
2084  EXPECT_NOT_POISONED(__sanitizer_unaligned_load16(x+22));
2085  EXPECT_POISONED(__sanitizer_unaligned_load16(x+23));
2086  EXPECT_POISONED(__sanitizer_unaligned_load16(x+24));
2087
2088  EXPECT_POISONED(__sanitizer_unaligned_load32(x+4));
2089  EXPECT_POISONED(__sanitizer_unaligned_load32(x+7));
2090  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+8));
2091  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+9));
2092  EXPECT_NOT_POISONED(__sanitizer_unaligned_load32(x+20));
2093  EXPECT_POISONED(__sanitizer_unaligned_load32(x+21));
2094  EXPECT_POISONED(__sanitizer_unaligned_load32(x+24));
2095
2096  EXPECT_POISONED(__sanitizer_unaligned_load64(x));
2097  EXPECT_POISONED(__sanitizer_unaligned_load64(x+1));
2098  EXPECT_POISONED(__sanitizer_unaligned_load64(x+7));
2099  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+8));
2100  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+9));
2101  EXPECT_NOT_POISONED(__sanitizer_unaligned_load64(x+16));
2102  EXPECT_POISONED(__sanitizer_unaligned_load64(x+17));
2103  EXPECT_POISONED(__sanitizer_unaligned_load64(x+21));
2104  EXPECT_POISONED(__sanitizer_unaligned_load64(x+24));
2105}
2106
2107TEST(MemorySanitizer, UnalignedStore16) {
2108  char x[5];
2109  U2 y = 0;
2110  __msan_poison(&y, 1);
2111  __sanitizer_unaligned_store16(x + 1, y);
2112  EXPECT_POISONED(x[0]);
2113  EXPECT_POISONED(x[1]);
2114  EXPECT_NOT_POISONED(x[2]);
2115  EXPECT_POISONED(x[3]);
2116  EXPECT_POISONED(x[4]);
2117}
2118
2119TEST(MemorySanitizer, UnalignedStore32) {
2120  char x[8];
2121  U4 y4 = 0;
2122  __msan_poison(&y4, 2);
2123  __sanitizer_unaligned_store32(x+3, y4);
2124  EXPECT_POISONED(x[0]);
2125  EXPECT_POISONED(x[1]);
2126  EXPECT_POISONED(x[2]);
2127  EXPECT_POISONED(x[3]);
2128  EXPECT_POISONED(x[4]);
2129  EXPECT_NOT_POISONED(x[5]);
2130  EXPECT_NOT_POISONED(x[6]);
2131  EXPECT_POISONED(x[7]);
2132}
2133
2134TEST(MemorySanitizer, UnalignedStore64) {
2135  char x[16];
2136  U8 y = 0;
2137  __msan_poison(&y, 3);
2138  __msan_poison(((char *)&y) + sizeof(y) - 2, 1);
2139  __sanitizer_unaligned_store64(x+3, y);
2140  EXPECT_POISONED(x[0]);
2141  EXPECT_POISONED(x[1]);
2142  EXPECT_POISONED(x[2]);
2143  EXPECT_POISONED(x[3]);
2144  EXPECT_POISONED(x[4]);
2145  EXPECT_POISONED(x[5]);
2146  EXPECT_NOT_POISONED(x[6]);
2147  EXPECT_NOT_POISONED(x[7]);
2148  EXPECT_NOT_POISONED(x[8]);
2149  EXPECT_POISONED(x[9]);
2150  EXPECT_NOT_POISONED(x[10]);
2151  EXPECT_POISONED(x[11]);
2152}
2153
2154TEST(MemorySanitizerDr, StoreInDSOTest) {
2155  if (!__msan_has_dynamic_component()) return;
2156  char* s = new char[10];
2157  dso_memfill(s, 9);
2158  EXPECT_NOT_POISONED(s[5]);
2159  EXPECT_POISONED(s[9]);
2160}
2161
2162int return_poisoned_int() {
2163  return ReturnPoisoned<U8>();
2164}
2165
2166TEST(MemorySanitizerDr, ReturnFromDSOTest) {
2167  if (!__msan_has_dynamic_component()) return;
2168  EXPECT_NOT_POISONED(dso_callfn(return_poisoned_int));
2169}
2170
2171NOINLINE int TrashParamTLS(long long x, long long y, long long z) {  //NOLINT
2172  EXPECT_POISONED(x);
2173  EXPECT_POISONED(y);
2174  EXPECT_POISONED(z);
2175  return 0;
2176}
2177
2178static int CheckParamTLS(long long x, long long y, long long z) {  //NOLINT
2179  EXPECT_NOT_POISONED(x);
2180  EXPECT_NOT_POISONED(y);
2181  EXPECT_NOT_POISONED(z);
2182  return 0;
2183}
2184
2185TEST(MemorySanitizerDr, CallFromDSOTest) {
2186  if (!__msan_has_dynamic_component()) return;
2187  S8* x = GetPoisoned<S8>();
2188  S8* y = GetPoisoned<S8>();
2189  S8* z = GetPoisoned<S8>();
2190  EXPECT_NOT_POISONED(TrashParamTLS(*x, *y, *z));
2191  EXPECT_NOT_POISONED(dso_callfn1(CheckParamTLS));
2192}
2193
2194static void StackStoreInDSOFn(int* x, int* y) {
2195  EXPECT_NOT_POISONED(*x);
2196  EXPECT_NOT_POISONED(*y);
2197}
2198
2199TEST(MemorySanitizerDr, StackStoreInDSOTest) {
2200  if (!__msan_has_dynamic_component()) return;
2201  dso_stack_store(StackStoreInDSOFn, 1);
2202}
2203
2204TEST(MemorySanitizerOrigins, SetGet) {
2205  EXPECT_EQ(TrackingOrigins(), __msan_get_track_origins());
2206  if (!TrackingOrigins()) return;
2207  int x;
2208  __msan_set_origin(&x, sizeof(x), 1234);
2209  EXPECT_EQ(1234, __msan_get_origin(&x));
2210  __msan_set_origin(&x, sizeof(x), 5678);
2211  EXPECT_EQ(5678, __msan_get_origin(&x));
2212  __msan_set_origin(&x, sizeof(x), 0);
2213  EXPECT_EQ(0, __msan_get_origin(&x));
2214}
2215
2216namespace {
2217struct S {
2218  U4 dummy;
2219  U2 a;
2220  U2 b;
2221};
2222
2223// http://code.google.com/p/memory-sanitizer/issues/detail?id=6
2224TEST(MemorySanitizerOrigins, DISABLED_InitializedStoreDoesNotChangeOrigin) {
2225  if (!TrackingOrigins()) return;
2226
2227  S s;
2228  U4 origin = rand();  // NOLINT
2229  s.a = *GetPoisonedO<U2>(0, origin);
2230  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2231  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2232
2233  s.b = 42;
2234  EXPECT_EQ(origin, __msan_get_origin(&s.a));
2235  EXPECT_EQ(origin, __msan_get_origin(&s.b));
2236}
2237}  // namespace
2238
2239template<class T, class BinaryOp>
2240INLINE
2241void BinaryOpOriginTest(BinaryOp op) {
2242  U4 ox = rand();  //NOLINT
2243  U4 oy = rand();  //NOLINT
2244  T *x = GetPoisonedO<T>(0, ox, 0);
2245  T *y = GetPoisonedO<T>(1, oy, 0);
2246  T *z = GetPoisonedO<T>(2, 0, 0);
2247
2248  *z = op(*x, *y);
2249  U4 origin = __msan_get_origin(z);
2250  EXPECT_POISONED_O(*z, origin);
2251  EXPECT_EQ(true, origin == ox || origin == oy);
2252
2253  // y is poisoned, x is not.
2254  *x = 10101;
2255  *y = *GetPoisonedO<T>(1, oy);
2256  break_optimization(x);
2257  __msan_set_origin(z, sizeof(*z), 0);
2258  *z = op(*x, *y);
2259  EXPECT_POISONED_O(*z, oy);
2260  EXPECT_EQ(__msan_get_origin(z), oy);
2261
2262  // x is poisoned, y is not.
2263  *x = *GetPoisonedO<T>(0, ox);
2264  *y = 10101010;
2265  break_optimization(y);
2266  __msan_set_origin(z, sizeof(*z), 0);
2267  *z = op(*x, *y);
2268  EXPECT_POISONED_O(*z, ox);
2269  EXPECT_EQ(__msan_get_origin(z), ox);
2270}
2271
2272template<class T> INLINE T XOR(const T &a, const T&b) { return a ^ b; }
2273template<class T> INLINE T ADD(const T &a, const T&b) { return a + b; }
2274template<class T> INLINE T SUB(const T &a, const T&b) { return a - b; }
2275template<class T> INLINE T MUL(const T &a, const T&b) { return a * b; }
2276template<class T> INLINE T AND(const T &a, const T&b) { return a & b; }
2277template<class T> INLINE T OR (const T &a, const T&b) { return a | b; }
2278
2279TEST(MemorySanitizerOrigins, BinaryOp) {
2280  if (!TrackingOrigins()) return;
2281  BinaryOpOriginTest<S8>(XOR<S8>);
2282  BinaryOpOriginTest<U8>(ADD<U8>);
2283  BinaryOpOriginTest<S4>(SUB<S4>);
2284  BinaryOpOriginTest<S4>(MUL<S4>);
2285  BinaryOpOriginTest<U4>(OR<U4>);
2286  BinaryOpOriginTest<U4>(AND<U4>);
2287  BinaryOpOriginTest<double>(ADD<U4>);
2288  BinaryOpOriginTest<float>(ADD<S4>);
2289  BinaryOpOriginTest<double>(ADD<double>);
2290  BinaryOpOriginTest<float>(ADD<double>);
2291}
2292
2293TEST(MemorySanitizerOrigins, Unary) {
2294  if (!TrackingOrigins()) return;
2295  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2296  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2297  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2298  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2299
2300  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2301  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2302  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2303  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2304
2305  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2306  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2307  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2308  EXPECT_POISONED_O(*GetPoisonedO<U4>(0, __LINE__), __LINE__);
2309
2310  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2311  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2312  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2313  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2314
2315  EXPECT_POISONED_O((void*)*GetPoisonedO<S8>(0, __LINE__), __LINE__);
2316  EXPECT_POISONED_O((U8)*GetPoisonedO<void*>(0, __LINE__), __LINE__);
2317}
2318
2319TEST(MemorySanitizerOrigins, EQ) {
2320  if (!TrackingOrigins()) return;
2321  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) <= 11, __LINE__);
2322  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__) == 11, __LINE__);
2323  EXPECT_POISONED_O(*GetPoisonedO<float>(0, __LINE__) == 1.1, __LINE__);
2324}
2325
2326TEST(MemorySanitizerOrigins, DIV) {
2327  if (!TrackingOrigins()) return;
2328  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) / 100, __LINE__);
2329  unsigned o = __LINE__;
2330  EXPECT_UMR_O(volatile unsigned y = 100 / *GetPoisonedO<S4>(0, o, 1), o);
2331}
2332
2333TEST(MemorySanitizerOrigins, SHIFT) {
2334  if (!TrackingOrigins()) return;
2335  EXPECT_POISONED_O(*GetPoisonedO<U8>(0, __LINE__) >> 10, __LINE__);
2336  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) >> 10, __LINE__);
2337  EXPECT_POISONED_O(*GetPoisonedO<S8>(0, __LINE__) << 10, __LINE__);
2338  EXPECT_POISONED_O(10U << *GetPoisonedO<U8>(0, __LINE__), __LINE__);
2339  EXPECT_POISONED_O(-10 >> *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2340  EXPECT_POISONED_O(-10 << *GetPoisonedO<S8>(0, __LINE__), __LINE__);
2341}
2342
2343template<class T, int N>
2344void MemCpyTest() {
2345  int ox = __LINE__;
2346  T *x = new T[N];
2347  T *y = new T[N];
2348  T *z = new T[N];
2349  __msan_poison(x, N * sizeof(T));
2350  __msan_set_origin(x, N * sizeof(T), ox);
2351  __msan_set_origin(y, N * sizeof(T), 777777);
2352  __msan_set_origin(z, N * sizeof(T), 888888);
2353  EXPECT_NOT_POISONED(x);
2354  memcpy(y, x, N * sizeof(T));
2355  EXPECT_POISONED_O(y[0], ox);
2356  EXPECT_POISONED_O(y[N/2], ox);
2357  EXPECT_POISONED_O(y[N-1], ox);
2358  EXPECT_NOT_POISONED(x);
2359  memmove(z, x, N * sizeof(T));
2360  EXPECT_POISONED_O(z[0], ox);
2361  EXPECT_POISONED_O(z[N/2], ox);
2362  EXPECT_POISONED_O(z[N-1], ox);
2363}
2364
2365TEST(MemorySanitizerOrigins, LargeMemCpy) {
2366  if (!TrackingOrigins()) return;
2367  MemCpyTest<U1, 10000>();
2368  MemCpyTest<U8, 10000>();
2369}
2370
2371TEST(MemorySanitizerOrigins, SmallMemCpy) {
2372  if (!TrackingOrigins()) return;
2373  MemCpyTest<U8, 1>();
2374  MemCpyTest<U8, 2>();
2375  MemCpyTest<U8, 3>();
2376}
2377
2378TEST(MemorySanitizerOrigins, Select) {
2379  if (!TrackingOrigins()) return;
2380  EXPECT_NOT_POISONED(g_one ? 1 : *GetPoisonedO<S4>(0, __LINE__));
2381  EXPECT_POISONED_O(*GetPoisonedO<S4>(0, __LINE__), __LINE__);
2382  S4 x;
2383  break_optimization(&x);
2384  x = g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 0;
2385
2386  EXPECT_POISONED_O(g_1 ? *GetPoisonedO<S4>(0, __LINE__) : 1, __LINE__);
2387  EXPECT_POISONED_O(g_0 ? 1 : *GetPoisonedO<S4>(0, __LINE__), __LINE__);
2388}
2389
2390extern "C"
2391NOINLINE char AllocaTO() {
2392  int ar[100];
2393  break_optimization(ar);
2394  return ar[10];
2395  // fprintf(stderr, "Descr: %s\n",
2396  //        __msan_get_origin_descr_if_stack(__msan_get_origin_tls()));
2397}
2398
2399TEST(MemorySanitizerOrigins, Alloca) {
2400  if (!TrackingOrigins()) return;
2401  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2402  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2403  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2404  EXPECT_POISONED_S(AllocaTO(), "ar@AllocaTO");
2405}
2406
2407// FIXME: replace with a lit-like test.
2408TEST(MemorySanitizerOrigins, DISABLED_AllocaDeath) {
2409  if (!TrackingOrigins()) return;
2410  EXPECT_DEATH(AllocaTO(), "ORIGIN: stack allocation: ar@AllocaTO");
2411}
2412
2413NOINLINE int RetvalOriginTest(U4 origin) {
2414  int *a = new int;
2415  break_optimization(a);
2416  __msan_set_origin(a, sizeof(*a), origin);
2417  int res = *a;
2418  delete a;
2419  return res;
2420}
2421
2422TEST(MemorySanitizerOrigins, Retval) {
2423  if (!TrackingOrigins()) return;
2424  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2425}
2426
2427NOINLINE void ParamOriginTest(int param, U4 origin) {
2428  EXPECT_POISONED_O(param, origin);
2429}
2430
2431TEST(MemorySanitizerOrigins, Param) {
2432  if (!TrackingOrigins()) return;
2433  int *a = new int;
2434  U4 origin = __LINE__;
2435  break_optimization(a);
2436  __msan_set_origin(a, sizeof(*a), origin);
2437  ParamOriginTest(*a, origin);
2438  delete a;
2439}
2440
2441TEST(MemorySanitizerOrigins, Invoke) {
2442  if (!TrackingOrigins()) return;
2443  StructWithDtor s;  // Will cause the calls to become invokes.
2444  EXPECT_POISONED_O(RetvalOriginTest(__LINE__), __LINE__);
2445}
2446
2447TEST(MemorySanitizerOrigins, strlen) {
2448  S8 alignment;
2449  break_optimization(&alignment);
2450  char x[4] = {'a', 'b', 0, 0};
2451  __msan_poison(&x[2], 1);
2452  U4 origin = __LINE__;
2453  __msan_set_origin(x, sizeof(x), origin);
2454  EXPECT_UMR_O(volatile unsigned y = strlen(x), origin);
2455}
2456
2457TEST(MemorySanitizerOrigins, wcslen) {
2458  wchar_t w[3] = {'a', 'b', 0};
2459  U4 origin = __LINE__;
2460  __msan_set_origin(w, sizeof(w), origin);
2461  __msan_poison(&w[2], sizeof(wchar_t));
2462  EXPECT_UMR_O(volatile unsigned y = wcslen(w), origin);
2463}
2464
2465#if MSAN_HAS_M128
2466TEST(MemorySanitizerOrigins, StoreIntrinsic) {
2467  __m128 x, y;
2468  U4 origin = __LINE__;
2469  __msan_set_origin(&x, sizeof(x), origin);
2470  __msan_poison(&x, sizeof(x));
2471  __builtin_ia32_storeups((float*)&y, x);
2472  EXPECT_POISONED_O(y, origin);
2473}
2474#endif
2475
2476NOINLINE void RecursiveMalloc(int depth) {
2477  static int count;
2478  count++;
2479  if ((count % (1024 * 1024)) == 0)
2480    printf("RecursiveMalloc: %d\n", count);
2481  int *x1 = new int;
2482  int *x2 = new int;
2483  break_optimization(x1);
2484  break_optimization(x2);
2485  if (depth > 0) {
2486    RecursiveMalloc(depth-1);
2487    RecursiveMalloc(depth-1);
2488  }
2489  delete x1;
2490  delete x2;
2491}
2492
2493TEST(MemorySanitizer, CallocOverflow) {
2494  size_t kArraySize = 4096;
2495  volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max();
2496  volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10;
2497  void *p = calloc(kArraySize, kArraySize2);  // Should return 0.
2498  EXPECT_EQ(0L, Ident(p));
2499}
2500
2501TEST(MemorySanitizerStress, DISABLED_MallocStackTrace) {
2502  RecursiveMalloc(22);
2503}
2504