f3967bcc50
bitcoin-config.h moved, but the old file is likely to still exist when reconfiguring or switching branches. This would've caused files to not rebuild correctly, and other strange problems. Make the path explicit so that the old one cannot be found. Core libs use config/bitcoin-config.h. Libs (like crypto) which don't want access to bitcoin's headers continue to use -Iconfig and #include bitcoin-config.h.
68 lines
1.8 KiB
C++
68 lines
1.8 KiB
C++
// Copyright (c) 2009-2014 The Bitcoin developers
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// Distributed under the MIT/X11 software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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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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// 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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{
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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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