1 // Test needle 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:intercept_strlen=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 s1[] = "ab"; 19 char s2[4] = "cba"; 20 __asan_poison_memory_region ((char *)&s2[2], 2); 21 r = strcasestr(s1, s2); 22 assert(r == 0); 23 // CHECK:'s2' <== Memory access at offset {{[0-9]+}} partially overflows this variable 24 return 0; 25 } 26
