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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 
main(int argc,char ** argv)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 }
21