compiler-rt/test/asan/TestCases/strspn-2.c

   1 // Test stopset overflow in strspn function
   2 // RUN: %clang_asan %s -o %t && %env_asan_opts=strict_string_checks=true not %run %t 2>&1 | FileCheck %s
   3
   4 // Test intercept_strspn asan option
   5 // RUN: %env_asan_opts=intercept_strspn=false %run %t 2>&1
   6
   7 #include <assert.h>
   8 #include <string.h>
   9 #include <sanitizer/asan_interface.h>
  10
  11 int main(int argc, char **argv) {
  12   size_t r;
  13   char s1[] = "bbc";
  14   char s2[5] = "abcd";
  15   __asan_poison_memory_region ((char *)&s2[3], 2);
  16   r = strspn(s1, s2);
  17   // CHECK:'s2'{{.*}} <== Memory access at offset {{[0-9]+}} partially overflows this variable
  18   assert(r >= 2);
  19   return 0;
  20 }