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 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
