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1a4d82fc JJ |
1 | // RUN: %clangxx_asan -O0 %s -o %t 2>&1 |
2 | // RUN: not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=MALLOC-CTX | |
3 | ||
4 | // Also works if no malloc context is available. | |
5 | // RUN: ASAN_OPTIONS=malloc_context_size=0:fast_unwind_on_malloc=0 not %run %t 2>&1 | FileCheck %s | |
6 | // RUN: ASAN_OPTIONS=malloc_context_size=0:fast_unwind_on_malloc=1 not %run %t 2>&1 | FileCheck %s | |
7 | ||
8 | #include <stdlib.h> | |
9 | #include <string.h> | |
10 | int main(int argc, char **argv) { | |
11 | char *x = (char*)malloc(10 * sizeof(char)); | |
12 | memset(x, 0, 10); | |
13 | int res = x[argc]; | |
14 | free(x); | |
15 | free(x + argc - 1); // BOOM | |
16 | // CHECK: AddressSanitizer: attempting double-free{{.*}}in thread T0 | |
17 | // CHECK: #0 0x{{.*}} in {{.*}}free | |
18 | // CHECK: #1 0x{{.*}} in main {{.*}}double-free.cc:[[@LINE-3]] | |
19 | // CHECK: freed by thread T0 here: | |
20 | // MALLOC-CTX: #0 0x{{.*}} in {{.*}}free | |
21 | // MALLOC-CTX: #1 0x{{.*}} in main {{.*}}double-free.cc:[[@LINE-7]] | |
22 | // CHECK: allocated by thread T0 here: | |
23 | // MALLOC-CTX: double-free.cc:[[@LINE-12]] | |
24 | return res; | |
25 | } |