13b290486cd4cd601b20e04340e593c9ed9717e5fsewardj// Test haystack overflow in strcasestr function 20447bbd096d5b08db6e4483b8138888a9fa0802aphilippe// RUN: %clang_asan %s -o %t && %env_asan_opts=strict_string_checks=true not %run %t 2>&1 | FileCheck %s 33b290486cd4cd601b20e04340e593c9ed9717e5fsewardj 43b290486cd4cd601b20e04340e593c9ed9717e5fsewardj// Test intercept_strstr asan option 53b290486cd4cd601b20e04340e593c9ed9717e5fsewardj// Disable other interceptors because strlen may be called inside strcasestr 63b290486cd4cd601b20e04340e593c9ed9717e5fsewardj// RUN: %env_asan_opts=intercept_strstr=false:replace_str=false %run %t 2>&1 73b290486cd4cd601b20e04340e593c9ed9717e5fsewardj 83b290486cd4cd601b20e04340e593c9ed9717e5fsewardj// There's no interceptor for strcasestr on Windows 93b290486cd4cd601b20e04340e593c9ed9717e5fsewardj// XFAIL: win32 103b290486cd4cd601b20e04340e593c9ed9717e5fsewardj 113b290486cd4cd601b20e04340e593c9ed9717e5fsewardj#define _GNU_SOURCE 123b290486cd4cd601b20e04340e593c9ed9717e5fsewardj#include <assert.h> 133b290486cd4cd601b20e04340e593c9ed9717e5fsewardj#include <string.h> 143b290486cd4cd601b20e04340e593c9ed9717e5fsewardj#include <sanitizer/asan_interface.h> 153b290486cd4cd601b20e04340e593c9ed9717e5fsewardj 163b290486cd4cd601b20e04340e593c9ed9717e5fsewardjint main(int argc, char **argv) { 173b290486cd4cd601b20e04340e593c9ed9717e5fsewardj char *r = 0; 183b290486cd4cd601b20e04340e593c9ed9717e5fsewardj char s2[] = "c"; 193b290486cd4cd601b20e04340e593c9ed9717e5fsewardj char s1[4] = "abC"; 203b290486cd4cd601b20e04340e593c9ed9717e5fsewardj __asan_poison_memory_region ((char *)&s1[2], 2); 213b290486cd4cd601b20e04340e593c9ed9717e5fsewardj r = strcasestr(s1, s2); 223b290486cd4cd601b20e04340e593c9ed9717e5fsewardj // CHECK:'s1' <== Memory access at offset {{[0-9]+}} partially overflows this variable 233b290486cd4cd601b20e04340e593c9ed9717e5fsewardj assert(r == s1 + 2); 243b290486cd4cd601b20e04340e593c9ed9717e5fsewardj return 0; 253b290486cd4cd601b20e04340e593c9ed9717e5fsewardj} 263b290486cd4cd601b20e04340e593c9ed9717e5fsewardj