1 //===-- Unittests for __stack_chk_fail ------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #include "hdr/signal_macros.h" 10 #include "src/__support/macros/sanitizer.h" 11 #include "src/compiler/__stack_chk_fail.h" 12 #include "src/string/memset.h" 13 #include "test/UnitTest/Test.h" 14 15 TEST(LlvmLibcStackChkFail, Death) { 16 EXPECT_DEATH([] { __stack_chk_fail(); }, WITH_SIGNAL(SIGABRT)); 17 } 18 19 // Disable the test when asan is enabled so that it doesn't immediately fail 20 // after the memset, but before the stack canary is re-checked. 21 #ifndef LIBC_HAS_ADDRESS_SANITIZER 22 TEST(LlvmLibcStackChkFail, Smash) { 23 EXPECT_DEATH( 24 [] { 25 int arr[20]; 26 LIBC_NAMESPACE::memset(arr, 0xAA, 2001); 27 }, 28 WITH_SIGNAL(SIGABRT)); 29 } 30 #endif // LIBC_HAS_ADDRESS_SANITIZER 31