be16f80abc
Any projects which want to use Hush code from now on will need to be licensed as GPLv3 or we will send the lawyers: https://www.softwarefreedom.org/ Notably, Komodo (KMD) is licensed as GPLv2 and is no longer compatible to receive code changes, without causing legal issues. MIT projects, such as Zcash, also cannot pull in changes from the Hush Full Node without permission from The Hush Developers, which may in some circumstances grant an MIT license on a case-by-case basis.
69 lines
1.8 KiB
C++
69 lines
1.8 KiB
C++
// Copyright (c) 2009-2014 The Bitcoin Core developers
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// Distributed under the GPLv3 software license, see the accompanying
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// file COPYING or https://www.gnu.org/licenses/gpl-3.0.en.html
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#if defined(HAVE_CONFIG_H)
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#include "config/bitcoin-config.h"
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#endif
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#include <cstddef>
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#if defined(HAVE_SYS_SELECT_H)
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#include <sys/select.h>
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#endif
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extern "C" void* memcpy(void* a, const void* b, size_t c);
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void* memcpy_int(void* a, const void* b, size_t c)
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{
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return memcpy(a, b, c);
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}
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namespace
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{
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// trigger: Use the memcpy_int wrapper which calls our internal memcpy.
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// A direct call to memcpy may be optimized away by the compiler.
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// test: Fill an array with a sequence of integers. memcpy to a new empty array.
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// Verify that the arrays are equal. Use an odd size to decrease the odds of
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// the call being optimized away.
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template <unsigned int T>
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bool sanity_test_memcpy()
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{
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unsigned int memcpy_test[T];
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unsigned int memcpy_verify[T] = {};
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for (unsigned int i = 0; i != T; ++i)
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memcpy_test[i] = i;
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memcpy_int(memcpy_verify, memcpy_test, sizeof(memcpy_test));
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for (unsigned int i = 0; i != T; ++i) {
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if (memcpy_verify[i] != i)
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return false;
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}
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return true;
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}
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#if defined(HAVE_SYS_SELECT_H)
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// trigger: Call FD_SET to trigger __fdelt_chk. FORTIFY_SOURCE must be defined
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// as >0 and optimizations must be set to at least -O2.
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// test: Add a file descriptor to an empty fd_set. Verify that it has been
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// correctly added.
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bool sanity_test_fdelt()
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{
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fd_set fds;
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FD_ZERO(&fds);
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FD_SET(0, &fds);
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return FD_ISSET(0, &fds);
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}
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#endif
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} // anon namespace
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bool glibc_sanity_test()
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{
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#if defined(HAVE_SYS_SELECT_H)
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if (!sanity_test_fdelt())
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return false;
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#endif
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return sanity_test_memcpy<1025>();
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}
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