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> 19int 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