compiler-rt/test/asan/TestCases/calloc-overflow.cpp

   1 // RUN: %clangxx_asan -O0 %s -o %t
   2 // RUN: %env_asan_opts=allocator_may_return_null=0 not %run %t 2>&1 | FileCheck %s
   3 // RUN: %env_asan_opts=allocator_may_return_null=1 %run %t 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
   4
   5 // REQUIRES: stable-runtime
   6
   7 #include <stdio.h>
   8 #include <stdlib.h>
   9
  10 int main() {
  11   void *p = calloc(-1, 1000);
  12   // CHECK: {{ERROR: AddressSanitizer: calloc parameters overflow: count \* size \(.* \* 1000\) cannot be represented in type size_t}}
  13   // CHECK: {{#0 0x.* in .*calloc}}
  14   // CHECK: {{#1 0x.* in main .*calloc-overflow.cpp:}}[[@LINE-3]]
  15   // CHECK: SUMMARY: AddressSanitizer: calloc-overflow
  16
  17   printf("calloc returned: %zu\n", (size_t)p);
  18   // CHECK-NULL: calloc returned: 0
  19
  20   return 0;
  21 }