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

   1 // Test strict_string_checks option in strchr function
   2 // RUN: %clang_asan %s -o %t && %run %t 2>&1
   3 // RUN: %env_asan_opts=strict_string_checks=false %run %t 2>&1
   4 // RUN: %env_asan_opts=strict_string_checks=true 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   size_t size = 100;
  12   char fill = 'o';
  13   char *s = (char*)malloc(size);
  14   memset(s, fill, size);
  15   char c = 'o';
  16   char* r = strchr(s, c);
  17   // CHECK: {{.*ERROR: AddressSanitizer: heap-buffer-overflow on address}}
  18   // CHECK: READ of size 101
  19   assert(r == s);
  20   free(s);
  21   return 0;
  22 }