compiler-rt/test/asan/TestCases/memcmp_test.cpp

   1 // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
   2 // RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
   3 // RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
   4 // RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
   5
   6 // REQUIRES: compiler-rt-optimized
   7
   8 #include <string.h>
   9 int main(int argc, char **argv) {
  10   char a1[] = {static_cast<char>(argc), 2, 3, 4};
  11   char a2[] = {1, static_cast<char>(2*argc), 3, 4};
  12   int res = memcmp(a1, a2, 4 + argc);  // BOOM
  13   // CHECK: AddressSanitizer: stack-buffer-overflow
  14   // CHECK: {{#[0-9]+ .*memcmp}}
  15   // CHECK: {{#[0-9]+ .*main}}
  16   return res;
  17 }