compiler-rt/test/asan/TestCases/Linux/malloc_delete_mismatch.cpp

   1 // Check that we detect malloc/delete mismatch only if the appropriate 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 // REQUIRES: stable-runtime
  16 #include <stdlib.h>
  17
  18 static volatile char *x;
  19
  20 int main() {
  21   x = (char*)malloc(10);
  22   x[0] = 0;
  23   delete x;
  24 }
  25 // CHECK: ERROR: AddressSanitizer: alloc-dealloc-mismatch (malloc vs operator delete) on 0x
  26 // CHECK-NEXT: #0{{.*}}operator delete
  27 // CHECK: #{{.*}}main
  28 // CHECK: is located 0 bytes inside of 10-byte region
  29 // CHECK-NEXT: allocated by thread T0 here:
  30 // ALLOC-STACK-NEXT: #0{{.*}}malloc
  31 // ALLOC-STACK: #{{.*}}main
  32 // CHECK: HINT: {{.*}} you may set ASAN_OPTIONS=alloc_dealloc_mismatch=0