diff --git a/src/Makefile.am b/src/Makefile.am
index 96934bde7a3..a6e9048949b 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -139,7 +139,6 @@ BITCOIN_CORE_H = \
   compat/byteswap.h \
   compat/cpuid.h \
   compat/endian.h \
-  compat/sanity.h \
   compressor.h \
   consensus/consensus.h \
   consensus/tx_check.h \
@@ -629,15 +628,12 @@ libbitcoin_common_a_SOURCES = \
   $(BITCOIN_CORE_H)
 
 # util: shared between all executables.
-# This library *must* be included to make sure that the glibc
-# sanity checks are linked.
 libbitcoin_util_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES)
 libbitcoin_util_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 libbitcoin_util_a_SOURCES = \
   support/lockedpool.cpp \
   chainparamsbase.cpp \
   clientversion.cpp \
-  compat/glibcxx_sanity.cpp \
   fs.cpp \
   interfaces/echo.cpp \
   interfaces/handler.cpp \
@@ -857,7 +853,6 @@ libbitcoinkernel_la_SOURCES = \
   chainparams.cpp \
   clientversion.cpp \
   coins.cpp \
-  compat/glibcxx_sanity.cpp \
   compressor.cpp \
   consensus/merkle.cpp \
   consensus/tx_check.cpp \
diff --git a/src/compat/glibcxx_sanity.cpp b/src/compat/glibcxx_sanity.cpp
deleted file mode 100644
index f2ceeeeb9cb..00000000000
--- a/src/compat/glibcxx_sanity.cpp
+++ /dev/null
@@ -1,62 +0,0 @@
-// Copyright (c) 2009-2018 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#include <list>
-#include <locale>
-#include <stdexcept>
-#include <string>
-
-namespace
-{
-// trigger: use ctype<char>::widen to trigger ctype<char>::_M_widen_init().
-// test: convert a char from narrow to wide and back. Verify that the result
-//   matches the original.
-bool sanity_test_widen(char testchar)
-{
-    const std::ctype<char>& test(std::use_facet<std::ctype<char> >(std::locale()));
-    return test.narrow(test.widen(testchar), 'b') == testchar;
-}
-
-// trigger: use list::push_back and list::pop_back to trigger _M_hook and
-//   _M_unhook.
-// test: Push a sequence of integers into a list. Pop them off and verify that
-//   they match the original sequence.
-bool sanity_test_list(unsigned int size)
-{
-    std::list<unsigned int> test;
-    for (unsigned int i = 0; i != size; ++i)
-        test.push_back(i + 1);
-
-    if (test.size() != size)
-        return false;
-
-    while (!test.empty()) {
-        if (test.back() != test.size())
-            return false;
-        test.pop_back();
-    }
-    return true;
-}
-
-} // namespace
-
-// trigger: string::at(x) on an empty string to trigger __throw_out_of_range_fmt.
-// test: force std::string to throw an out_of_range exception. Verify that
-//   it's caught correctly.
-bool sanity_test_range_fmt()
-{
-    std::string test;
-    try {
-        test.at(1);
-    } catch (const std::out_of_range&) {
-        return true;
-    } catch (...) {
-    }
-    return false;
-}
-
-bool glibcxx_sanity_test()
-{
-    return sanity_test_widen('a') && sanity_test_list(100) && sanity_test_range_fmt();
-}
diff --git a/src/compat/sanity.h b/src/compat/sanity.h
deleted file mode 100644
index 8e5811f1fd5..00000000000
--- a/src/compat/sanity.h
+++ /dev/null
@@ -1,10 +0,0 @@
-// Copyright (c) 2009-2021 The Bitcoin Core developers
-// Distributed under the MIT software license, see the accompanying
-// file COPYING or http://www.opensource.org/licenses/mit-license.php.
-
-#ifndef BITCOIN_COMPAT_SANITY_H
-#define BITCOIN_COMPAT_SANITY_H
-
-bool glibcxx_sanity_test();
-
-#endif // BITCOIN_COMPAT_SANITY_H
diff --git a/src/init.cpp b/src/init.cpp
index 35e9aa1443b..045808cc715 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -14,7 +14,6 @@
 #include <blockfilter.h>
 #include <chain.h>
 #include <chainparams.h>
-#include <compat/sanity.h>
 #include <consensus/amount.h>
 #include <deploymentstatus.h>
 #include <fs.h>
diff --git a/src/init.h b/src/init.h
index 2250ae20a05..1e22771dc29 100644
--- a/src/init.h
+++ b/src/init.h
@@ -43,7 +43,7 @@ bool AppInitBasicSetup(const ArgsManager& args);
  */
 bool AppInitParameterInteraction(const ArgsManager& args, bool use_syscall_sandbox = true);
 /**
- * Initialization sanity checks: ecc init, sanity checks, dir lock.
+ * Initialization sanity checks.
  * @note This can be done before daemonization. Do not call Shutdown() if this function fails.
  * @pre Parameters should be parsed and config file should be read, AppInitParameterInteraction should have been called.
  */
diff --git a/src/init/common.cpp b/src/init/common.cpp
index eac6732968a..788abb98214 100644
--- a/src/init/common.cpp
+++ b/src/init/common.cpp
@@ -7,7 +7,6 @@
 #endif
 
 #include <clientversion.h>
-#include <compat/sanity.h>
 #include <crypto/sha256.h>
 #include <fs.h>
 #include <key.h>
@@ -49,9 +48,6 @@ bool SanityChecks()
         return InitError(Untranslated("Elliptic curve cryptography sanity check failure. Aborting."));
     }
 
-    if (!glibcxx_sanity_test())
-        return false;
-
     if (!Random_SanityCheck()) {
         return InitError(Untranslated("OS cryptographic RNG sanity check failure. Aborting."));
     }
diff --git a/src/test/sanity_tests.cpp b/src/test/sanity_tests.cpp
index a7057f83612..907a3fd15b0 100644
--- a/src/test/sanity_tests.cpp
+++ b/src/test/sanity_tests.cpp
@@ -2,7 +2,6 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include <compat/sanity.h>
 #include <key.h>
 #include <test/util/setup_common.h>
 #include <util/time.h>
@@ -13,7 +12,6 @@ BOOST_FIXTURE_TEST_SUITE(sanity_tests, BasicTestingSetup)
 
 BOOST_AUTO_TEST_CASE(basic_sanity)
 {
-  BOOST_CHECK_MESSAGE(glibcxx_sanity_test() == true, "stdlib sanity test");
   BOOST_CHECK_MESSAGE(ECC_InitSanityCheck() == true, "secp256k1 sanity test");
   BOOST_CHECK_MESSAGE(ChronoSanityCheck() == true, "chrono epoch test");
 }