You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
69 lines
1.8 KiB
69 lines
1.8 KiB
// Copyright (c) 2009-2014 The Bitcoin Core developers
|
|
// Distributed under the MIT software license, see the accompanying
|
|
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
|
|
|
|
#if defined(HAVE_CONFIG_H)
|
|
#include "config/bitcoin-config.h"
|
|
#endif
|
|
|
|
#include <cstddef>
|
|
|
|
#if defined(HAVE_SYS_SELECT_H)
|
|
#include <sys/select.h>
|
|
#endif
|
|
|
|
extern "C" void* memcpy(void* a, const void* b, size_t c);
|
|
void* memcpy_int(void* a, const void* b, size_t c)
|
|
{
|
|
return memcpy(a, b, c);
|
|
}
|
|
|
|
namespace
|
|
{
|
|
// trigger: Use the memcpy_int wrapper which calls our internal memcpy.
|
|
// A direct call to memcpy may be optimized away by the compiler.
|
|
// test: Fill an array with a sequence of integers. memcpy to a new empty array.
|
|
// Verify that the arrays are equal. Use an odd size to decrease the odds of
|
|
// the call being optimized away.
|
|
template <unsigned int T>
|
|
bool sanity_test_memcpy()
|
|
{
|
|
unsigned int memcpy_test[T];
|
|
unsigned int memcpy_verify[T] = {};
|
|
for (unsigned int i = 0; i != T; ++i)
|
|
memcpy_test[i] = i;
|
|
|
|
memcpy_int(memcpy_verify, memcpy_test, sizeof(memcpy_test));
|
|
|
|
for (unsigned int i = 0; i != T; ++i) {
|
|
if (memcpy_verify[i] != i)
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
#if defined(HAVE_SYS_SELECT_H)
|
|
// trigger: Call FD_SET to trigger __fdelt_chk. FORTIFY_SOURCE must be defined
|
|
// as >0 and optimizations must be set to at least -O2.
|
|
// test: Add a file descriptor to an empty fd_set. Verify that it has been
|
|
// correctly added.
|
|
bool sanity_test_fdelt()
|
|
{
|
|
fd_set fds;
|
|
FD_ZERO(&fds);
|
|
FD_SET(0, &fds);
|
|
return FD_ISSET(0, &fds);
|
|
}
|
|
#endif
|
|
|
|
} // namespace
|
|
|
|
bool glibc_sanity_test()
|
|
{
|
|
#if defined(HAVE_SYS_SELECT_H)
|
|
if (!sanity_test_fdelt())
|
|
return false;
|
|
#endif
|
|
return sanity_test_memcpy<1025>();
|
|
}
|