compiler-rt/test/asan/TestCases/strcmp.c

   1 // RUN: %clang_asan %s -o %t
   2 // RUN: %env_asan_opts=intercept_strcmp=false %run %t 2>&1
   3 // RUN: %env_asan_opts=intercept_strcmp=true not %run %t 2>&1 | FileCheck %s
   4 // RUN:                                      not %run %t 2>&1 | FileCheck %s
   5
   6 #include <assert.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9
  10 int main(int argc, char **argv) {
  11   char s1[] = "abcd";
  12   char s2[] = "1234";
  13   assert(strcmp(s1, s2) > 0);
  14   assert(strcmp(s1 - 1, s2));
  15
  16   // CHECK: {{.*ERROR: AddressSanitizer: stack-buffer-underflow on address}}
  17   // CHECK: READ of size 1
  18   return 0;
  19 }