| // RUN: %clangxx_asan -O0 %s -o %t 2>&1 |
| // RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=MALLOC-CTX |
| |
| // Also works if no malloc context is available. |
| // RUN: %env_asan_opts=malloc_context_size=0:fast_unwind_on_malloc=0 not %run %t 2>&1 | FileCheck %s |
| // RUN: %env_asan_opts=malloc_context_size=0:fast_unwind_on_malloc=1 not %run %t 2>&1 | FileCheck %s |
| // XFAIL: arm-linux-gnueabi |
| // XFAIL: armv7l-unknown-linux-gnueabihf |
| |
| #include <stdlib.h> |
| #include <string.h> |
| int main(int argc, char **argv) { |
| char *x = (char*)malloc(10 * sizeof(char)); |
| memset(x, 0, 10); |
| int res = x[argc]; |
| free(x); |
| free(x + argc - 1); // BOOM |
| // CHECK: AddressSanitizer: attempting double-free{{.*}}in thread T0 |
| // CHECK: #0 0x{{.*}} in {{.*}}free |
| // CHECK: #1 0x{{.*}} in main {{.*}}double-free.cc:[[@LINE-3]] |
| // CHECK: freed by thread T0 here: |
| // MALLOC-CTX: #0 0x{{.*}} in {{.*}}free |
| // MALLOC-CTX: #1 0x{{.*}} in main {{.*}}double-free.cc:[[@LINE-7]] |
| // CHECK: allocated by thread T0 here: |
| // MALLOC-CTX: double-free.cc:[[@LINE-12]] |
| return res; |
| } |
