Stephen Hines | 2d1fdb2 | 2014-05-28 23:58:16 -0700 | [diff] [blame] | 1 | // Test the behavior of malloc/calloc/realloc when the allocation size is huge. |
| 2 | // By default (allocator_may_return_null=0) the process should crash. |
| 3 | // With allocator_may_return_null=1 the allocator should return 0. |
| 4 | // |
| 5 | // RUN: %clangxx_tsan -O0 %s -o %t |
| 6 | // RUN: not %run %t malloc 2>&1 | FileCheck %s --check-prefix=CHECK-mCRASH |
| 7 | // RUN: TSAN_OPTIONS=allocator_may_return_null=0 not %run %t malloc 2>&1 | FileCheck %s --check-prefix=CHECK-mCRASH |
| 8 | // RUN: TSAN_OPTIONS=allocator_may_return_null=0 not %run %t calloc 2>&1 | FileCheck %s --check-prefix=CHECK-cCRASH |
| 9 | // RUN: TSAN_OPTIONS=allocator_may_return_null=0 not %run %t calloc-overflow 2>&1 | FileCheck %s --check-prefix=CHECK-coCRASH |
| 10 | // RUN: TSAN_OPTIONS=allocator_may_return_null=0 not %run %t realloc 2>&1 | FileCheck %s --check-prefix=CHECK-rCRASH |
| 11 | // RUN: TSAN_OPTIONS=allocator_may_return_null=0 not %run %t realloc-after-malloc 2>&1 | FileCheck %s --check-prefix=CHECK-mrCRASH |
| 12 | |
| 13 | #include <limits.h> |
| 14 | #include <stdlib.h> |
| 15 | #include <string.h> |
| 16 | #include <stdio.h> |
| 17 | #include <assert.h> |
| 18 | #include <limits> |
| 19 | int main(int argc, char **argv) { |
| 20 | volatile size_t size = std::numeric_limits<size_t>::max() - 10000; |
| 21 | assert(argc == 2); |
| 22 | char *x = 0; |
| 23 | if (!strcmp(argv[1], "malloc")) { |
| 24 | fprintf(stderr, "malloc:\n"); |
| 25 | x = (char*)malloc(size); |
| 26 | } |
| 27 | if (!strcmp(argv[1], "calloc")) { |
| 28 | fprintf(stderr, "calloc:\n"); |
| 29 | x = (char*)calloc(size / 4, 4); |
| 30 | } |
| 31 | |
| 32 | if (!strcmp(argv[1], "calloc-overflow")) { |
| 33 | fprintf(stderr, "calloc-overflow:\n"); |
| 34 | volatile size_t kMaxSizeT = std::numeric_limits<size_t>::max(); |
| 35 | size_t kArraySize = 4096; |
| 36 | volatile size_t kArraySize2 = kMaxSizeT / kArraySize + 10; |
| 37 | x = (char*)calloc(kArraySize, kArraySize2); |
| 38 | } |
| 39 | |
| 40 | if (!strcmp(argv[1], "realloc")) { |
| 41 | fprintf(stderr, "realloc:\n"); |
| 42 | x = (char*)realloc(0, size); |
| 43 | } |
| 44 | if (!strcmp(argv[1], "realloc-after-malloc")) { |
| 45 | fprintf(stderr, "realloc-after-malloc:\n"); |
| 46 | char *t = (char*)malloc(100); |
| 47 | *t = 42; |
| 48 | x = (char*)realloc(t, size); |
| 49 | assert(*t == 42); |
| 50 | } |
| 51 | fprintf(stderr, "x: %p\n", x); |
| 52 | return x != 0; |
| 53 | } |
| 54 | // CHECK-mCRASH: malloc: |
| 55 | // CHECK-mCRASH: ThreadSanitizer's allocator is terminating the process |
| 56 | // CHECK-cCRASH: calloc: |
| 57 | // CHECK-cCRASH: ThreadSanitizer's allocator is terminating the process |
| 58 | // CHECK-coCRASH: calloc-overflow: |
| 59 | // CHECK-coCRASH: ThreadSanitizer's allocator is terminating the process |
| 60 | // CHECK-rCRASH: realloc: |
| 61 | // CHECK-rCRASH: ThreadSanitizer's allocator is terminating the process |
| 62 | // CHECK-mrCRASH: realloc-after-malloc: |
| 63 | // CHECK-mrCRASH: ThreadSanitizer's allocator is terminating the process |
| 64 | |