1 // Test haystack overflow in strcasestr 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_strstr asan option
5 // Disable other interceptors because strlen may be called inside strcasestr
6 // RUN: %env_asan_opts=intercept_strstr=false:replace_str=false %run %t 2>&1
7
8 // There's no interceptor for strcasestr on Windows
9 // XFAIL: win32
10
11 #define _GNU_SOURCE
12 #include <assert.h>
13 #include <string.h>
14 #include <sanitizer/asan_interface.h>
15
main(int argc,char ** argv)16 int main(int argc, char **argv) {
17 char *r = 0;
18 char s2[] = "c";
19 char s1[4] = "abC";
20 __asan_poison_memory_region ((char *)&s1[2], 2);
21 r = strcasestr(s1, s2);
22 // CHECK:'s1' <== Memory access at offset {{[0-9]+}} partially overflows this variable
23 assert(r == s1 + 2);
24 return 0;
25 }
26