src/libcompiler_builtins/compiler-rt/test/asan/TestCases/strspn-1.c

   1 // Test string s1 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 s2[] = "ab";
  14   char s1[4] = "acb";
  15   __asan_poison_memory_region ((char *)&s1[2], 2);
  16   r = strspn(s1, s2);
  17   // CHECK:'s1'{{.*}} <== Memory access at offset {{[0-9]+}} partially overflows this variable
  18   assert(r == 1);
  19   return 0;
  20 }