4 files changed, 0 insertions, 48 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 627df97cad..13812de0e7 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -496,7 +496,6 @@ libbitcoin_util_a_SOURCES = \
   support/lockedpool.cpp \
   chainparamsbase.cpp \
   clientversion.cpp \
-  compat/glibc_sanity_fdelt.cpp \
   compat/glibc_sanity.cpp \
   compat/glibcxx_sanity.cpp \
   compat/strnlen.cpp \
diff --git a/src/compat/glibc_compat.cpp b/src/compat/glibc_compat.cpp
index 4de4fd7f45..d17de33e86 100644
--- a/src/compat/glibc_compat.cpp
+++ b/src/compat/glibc_compat.cpp
@@ -9,10 +9,6 @@
 #include <cstddef>
 #include <cstdint>
 
-#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)
@@ -20,15 +16,6 @@ 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")));
-
 #if defined(__i386__) || defined(__arm__)
 
 extern "C" int64_t __udivmoddi4(uint64_t u, uint64_t v, uint64_t* rp);
diff --git a/src/compat/glibc_sanity.cpp b/src/compat/glibc_sanity.cpp
index cc74f28899..0367b9a53f 100644
--- a/src/compat/glibc_sanity.cpp
+++ b/src/compat/glibc_sanity.cpp
@@ -8,10 +8,6 @@
 
 #include <cstddef>
 
-#if defined(HAVE_SYS_SELECT_H)
-bool sanity_test_fdelt();
-#endif
-
 extern "C" void* memcpy(void* a, const void* b, size_t c);
 void* memcpy_int(void* a, const void* b, size_t c)
 {
@@ -45,9 +41,5 @@ bool sanity_test_memcpy()
 
 bool glibc_sanity_test()
 {
-#if defined(HAVE_SYS_SELECT_H)
-    if (!sanity_test_fdelt())
-        return false;
-#endif
     return sanity_test_memcpy<1025>();
 }
diff --git a/src/compat/glibc_sanity_fdelt.cpp b/src/compat/glibc_sanity_fdelt.cpp
deleted file mode 100644
index 87140d0c71..0000000000
--- a/src/compat/glibc_sanity_fdelt.cpp
+++ /dev/null
@@ -1,26 +0,0 @@
-// Copyright (c) 2009-2019 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
-
-#if defined(HAVE_SYS_SELECT_H)
-#ifdef HAVE_CSTRING_DEPENDENT_FD_ZERO
-#include <cstring>
-#endif
-#include <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