1 files changed, 29 insertions, 0 deletions
diff --git a/src/compat/glibc_compat.cpp b/src/compat/glibc_compat.cpp
new file mode 100644
index 000000000..3b9c70df7
--- /dev/null
+++ b/src/compat/glibc_compat.cpp
@@ -0,0 +1,29 @@
+// 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
+
+// Prior to GLIBC_2.14, memcpy was aliased to memmove.
+extern "C" void* memmove(void* a, const void* b, size_t c);
+extern "C" void* memcpy(void* a, const void* b, size_t c)
+{
+    return memmove(a, b, c);
+}
+
+extern "C" void __chk_fail(void) __attribute__((__noreturn__));
+extern "C" FDELT_TYPE __fdelt_warn(FDELT_TYPE a)
+{
+    if (a >= FD_SETSIZE)
+        __chk_fail();
+    return a / __NFDBITS;
+}
+extern "C" FDELT_TYPE __fdelt_chk(FDELT_TYPE) __attribute__((weak, alias("__fdelt_warn")));