26 lines · c
1// Test needle overflow in strcasestr function2// RUN: %clang_asan %s -o %t && %env_asan_opts=strict_string_checks=true not %run %t 2>&1 | FileCheck %s3 4// Test intercept_strstr asan option5// Disable other interceptors because strlen may be called inside strcasestr6// RUN: %env_asan_opts=intercept_strstr=false:replace_str=false:intercept_strlen=false %run %t 2>&17 8// There's no interceptor for strcasestr on Windows9// XFAIL: target={{.*windows-(msvc.*|gnu)}}10 11#define _GNU_SOURCE12#include <assert.h>13#include <string.h>14#include <sanitizer/asan_interface.h>15 16int 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 variable24 return 0;25}26