1259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar// Test strict_string_checks option in strcmp function 2259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar// RUN: %clang_asan %s -o %t && %run %t 2>&1 33d763c0d3700e73b3aead8e65e04ec28efc56138Pirama Arumuga Nainar// RUN: %env_asan_opts=strict_string_checks=false %run %t 2>&1 43d763c0d3700e73b3aead8e65e04ec28efc56138Pirama Arumuga Nainar// RUN: %env_asan_opts=strict_string_checks=true not %run %t 2>&1 | FileCheck %s 5259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar 6259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar#include <assert.h> 7259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar#include <stdlib.h> 8259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar#include <string.h> 9259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar 10259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainarint main(int argc, char **argv) { 11259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar size_t size = 100; 12259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar char fill = 'o'; 13259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar char *s1 = (char*)malloc(size); 14259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar memset(s1, fill, size); 15259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar char *s2 = (char*)malloc(size); 16259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar memset(s2, fill, size); 17259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar s1[size - 1] = 'z'; 18259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar s2[size - 1] = 'x'; 19259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar int r = strcmp(s1, s2); 20259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar // CHECK: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}} 21259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar // CHECK: READ of size 101 22259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar assert(r == 1); 23259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar free(s1); 24259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar free(s2); 25259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar return 0; 26259f7063e3e4c4b94dded1e90ab0a943d0fa737bPirama Arumuga Nainar} 27