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
19static volatile char *x;
20
21int 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