1 // Check that we detect malloc/delete mismatch only if the approptiate flag
2 // is set.
3
4 // RUN: %clangxx_asan -g %s -o %t 2>&1
5
6 // Find error and provide malloc context.
7 // RUN: %env_asan_opts=alloc_dealloc_mismatch=1 not %run %t 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=ALLOC-STACK
8
9 // No error here.
10 // RUN: %env_asan_opts=alloc_dealloc_mismatch=0 %run %t
11
12 // Also works if no malloc context is available.
13 // RUN: %env_asan_opts=alloc_dealloc_mismatch=1:malloc_context_size=0:fast_unwind_on_malloc=0 not %run %t 2>&1 | FileCheck %s
14 // RUN: %env_asan_opts=alloc_dealloc_mismatch=1:malloc_context_size=0:fast_unwind_on_malloc=1 not %run %t 2>&1 | FileCheck %s
15 // XFAIL: arm-linux-gnueabi
16 // XFAIL: armv7l-unknown-linux-gnueabihf
17 #include <stdlib.h>
18
19 static volatile char *x;
20
main()21 int main() {
22 x = (char*)malloc(10);
23 x[0] = 0;
24 delete x;
25 }
26 // CHECK: ERROR: AddressSanitizer: alloc-dealloc-mismatch (malloc vs operator delete) on 0x
27 // CHECK-NEXT: #0{{.*}}operator delete
28 // CHECK: #{{.*}}main
29 // CHECK: is located 0 bytes inside of 10-byte region
30 // CHECK-NEXT: allocated by thread T0 here:
31 // ALLOC-STACK-NEXT: #0{{.*}}malloc
32 // ALLOC-STACK: #{{.*}}main
33 // CHECK: HINT: {{.*}} you may set ASAN_OPTIONS=alloc_dealloc_mismatch=0
34