22 lines · c
1// Test haystack overflow in strstr 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 strstr6// RUN: %env_asan_opts=intercept_strstr=false:replace_str=false %run %t 2>&17 8#include <assert.h>9#include <string.h>10#include <sanitizer/asan_interface.h>11 12int main(int argc, char **argv) {13 char *r = 0;14 char s2[] = "c";15 char s1[4] = "acb";16 __asan_poison_memory_region ((char *)&s1[2], 2);17 r = strstr(s1, s2);18 // CHECK:'s1'{{.*}} <== Memory access at offset {{[0-9]+}} {{partially overflows this variable|is inside this variable}}19 assert(r == s1 + 1);20 return 0;21}22