32 lines · cpp
1// RUN: %clangxx_asan -O0 %s -o %t 2>&12// RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=MALLOC-CTX3 4// Also works if no malloc context is available.5// RUN: %env_asan_opts=malloc_context_size=0:fast_unwind_on_malloc=0 not %run %t 2>&1 | FileCheck %s6// RUN: %env_asan_opts=malloc_context_size=0:fast_unwind_on_malloc=1 not %run %t 2>&1 | FileCheck %s7 8// RUN: %clangxx_asan -O0 -fsanitize-recover=address %s -o %t 2>&19// RUN: %env_asan_opts=halt_on_error=false %run %t 2>&1 | FileCheck %s --check-prefix CHECK-RECOVER10// REQUIRES: stable-runtime11 12#include <stdlib.h>13#include <string.h>14int main(int argc, char **argv) {15 char *x = (char*)malloc(10 * sizeof(char));16 memset(x, 0, 10);17 int res = x[argc];18 free(x);19 free(x + argc - 1); // BOOM20 // CHECK: AddressSanitizer: attempting double-free{{.*}}in thread T021 // CHECK: #0 0x{{.*}} in {{.*}}free22 // CHECK: #{{[1-3]}} 0x{{.*}} in main {{.*}}double-free.cpp:[[@LINE-3]]23 // CHECK: freed by thread T0 here:24 // MALLOC-CTX: #0 0x{{.*}} in {{.*}}free25 // MALLOC-CTX: #{{[1-3]}} 0x{{.*}} in main {{.*}}double-free.cpp:[[@LINE-7]]26 // CHECK: allocated by thread T0 here:27 // MALLOC-CTX: double-free.cpp:[[@LINE-12]]28 // CHECK-RECOVER: AddressSanitizer: attempting double-free{{.*}}in thread T029 // CHECK-RECOVER-NOT: AddressSanitizer CHECK failed:30 return res;31}32