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: %env_tsan_opts=allocator_may_return_null=0 not %run %t malloc 2>&1 | FileCheck %s --check-prefix=CHECK-mCRASH 8 // RUN: %env_tsan_opts=allocator_may_return_null=0 not %run %t calloc 2>&1 | FileCheck %s --check-prefix=CHECK-cCRASH 9 // RUN: %env_tsan_opts=allocator_may_return_null=0 not %run %t calloc-overflow 2>&1 | FileCheck %s --check-prefix=CHECK-coCRASH 10 // RUN: %env_tsan_opts=allocator_may_return_null=0 not %run %t realloc 2>&1 | FileCheck %s --check-prefix=CHECK-rCRASH 11 // RUN: %env_tsan_opts=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 65
