1 // Test needle overflow in strstr 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 strstr 6 // RUN: %env_asan_opts=intercept_strstr=false:replace_str=false:intercept_strlen=false %run %t 2>&1 7 8 #include <assert.h> 9 #include <string.h> 10 #include <sanitizer/asan_interface.h> 11 12 int main(int argc, char **argv) { 13 char *r = 0; 14 char s1[] = "ab"; 15 char s2[4] = "cab"; 16 __asan_poison_memory_region ((char *)&s2[2], 2); 17 r = strstr(s1, s2); 18 // CHECK:'s2' <== Memory access at offset {{[0-9]+}} partially overflows this variable 19 assert(r == 0); 20 return 0; 21 } 22
