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61 lines
1.2 KiB
C
61 lines
1.2 KiB
C
/*
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* Copyright (C) 2016 Kaspar Schleiser <kaspar@schleiser.de>
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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/**
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* @ingroup tests
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* @{
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*
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* @file
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* @brief ssp test application
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*
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* This test should crash badly when *not* using the ssp module, and panic if
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* using it.
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*
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* @author Kaspar Schleiser <kaspar@schleiser.de>
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*
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* @}
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*/
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#include <stdio.h>
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#include <string.h>
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__attribute__((weak)) void
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_prevent_memset_lto(void *const s, int c, const size_t n)
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{
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(void) s;
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(void) c;
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(void) n;
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}
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void test_func(void)
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{
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char buf[16];
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/* clang will detect the buffer overflow
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* and throw an error if we use `buf` directly */
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void *buffer_to_confuse_compiler = buf;
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/* cppcheck-suppress bufferAccessOutOfBounds
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* (reason: deliberately overflowing stack) */
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memset(buffer_to_confuse_compiler, 0, 32);
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/* prevent that memset call is optimized out by LTO */
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_prevent_memset_lto(buf, 0, 32);
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}
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int main(void)
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{
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puts("calling stack corruption function");
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test_func();
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puts("back to main");
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return 0;
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}
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