diff --git a/configure.ac b/configure.ac
index eeb3f4bbd7d..f131735460e 100644
--- a/configure.ac
+++ b/configure.ac
@@ -7382,7 +7382,6 @@ CFLAGS=$pre_PKG_CONFIG_CFLAGS
LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
gl_ASSERT_NO_GNULIB_POSIXCHECK
gl_ASSERT_NO_GNULIB_TESTS
-gl_EEMALLOC
gl_INIT
CFLAGS=$SAVE_CFLAGS
LIBS=$SAVE_LIBS
diff --git a/lib/explicit_bzero.c b/lib/explicit_bzero.c
deleted file mode 100644
index 59d9895abfe..00000000000
--- a/lib/explicit_bzero.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/* Erasure of sensitive data, generic implementation.
- Copyright (C) 2016-2025 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- . */
-
-/* An assembler implementation of explicit_bzero can be created as an
- assembler alias of an optimized bzero implementation.
- Architecture-specific implementations also need to define
- __explicit_bzero_chk. */
-
-#if !_LIBC
-# include
-#endif
-
-/* memset_s need this define */
-#if HAVE_MEMSET_S
-# define __STDC_WANT_LIB_EXT1__ 1
-#endif
-
-#include
-
-#if defined _WIN32 && !defined __CYGWIN__
-# define WIN32_LEAN_AND_MEAN
-# include
-#endif
-
-#if _LIBC
-/* glibc-internal users use __explicit_bzero_chk, and explicit_bzero
- redirects to that. */
-# undef explicit_bzero
-#endif
-
-/* Set LEN bytes of S to 0. The compiler will not delete a call to
- this function, even if S is dead after the call. */
-void
-explicit_bzero (void *s, size_t len)
-{
-#if defined _WIN32 && !defined __CYGWIN__
- (void) SecureZeroMemory (s, len);
-#elif HAVE_EXPLICIT_MEMSET
- explicit_memset (s, '\0', len);
-#elif HAVE_MEMSET_S
- (void) memset_s (s, len, '\0', len);
-#elif defined __GNUC__ && !defined __clang__
- memset (s, '\0', len);
- /* Compiler barrier. */
- asm volatile ("" ::: "memory");
-#elif defined __clang__
- memset (s, '\0', len);
- /* Compiler barrier. */
- /* With asm ("" ::: "memory") LLVM analyzes uses of 's' and finds that the
- whole thing is dead and eliminates it. Use 'g' to work around this
- problem. See . */
- __asm__ volatile ("" : : "g"(s) : "memory");
-#else
- /* Invoke memset through a volatile function pointer. This defeats compiler
- optimizations. */
- void * (* const volatile volatile_memset) (void *, int, size_t) = memset;
- (void) volatile_memset (s, '\0', len);
-#endif
-}
diff --git a/lib/malloc/scratch_buffer_dupfree.c b/lib/malloc/scratch_buffer_dupfree.c
deleted file mode 100644
index 0d31a765d5d..00000000000
--- a/lib/malloc/scratch_buffer_dupfree.c
+++ /dev/null
@@ -1,41 +0,0 @@
-/* Variable-sized buffer with on-stack default allocation.
- Copyright (C) 2020-2025 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- . */
-
-#ifndef _LIBC
-# include
-#endif
-
-#include
-#include
-
-void *
-__libc_scratch_buffer_dupfree (struct scratch_buffer *buffer, size_t size)
-{
- void *data = buffer->data;
- if (data == buffer->__space.__c)
- {
- void *copy = malloc (size);
- return copy != NULL ? memcpy (copy, data, size) : NULL;
- }
- else
- {
- void *copy = realloc (data, size);
- return copy != NULL ? copy : data;
- }
-}
-libc_hidden_def (__libc_scratch_buffer_dupfree)
diff --git a/lib/xalloc-oversized.h b/lib/xalloc-oversized.h
deleted file mode 100644
index 808e97b8cae..00000000000
--- a/lib/xalloc-oversized.h
+++ /dev/null
@@ -1,66 +0,0 @@
-/* xalloc-oversized.h -- memory allocation size checking
-
- Copyright (C) 1990-2000, 2003-2004, 2006-2025 Free Software
- Foundation, Inc.
-
- This file is free software: you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as
- published by the Free Software Foundation; either version 2.1 of the
- License, or (at your option) any later version.
-
- This file is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with this program. If not, see . */
-
-#ifndef XALLOC_OVERSIZED_H_
-#define XALLOC_OVERSIZED_H_
-
-#include
-#include
-
-/* True if N * S does not fit into both ptrdiff_t and size_t.
- N and S should be nonnegative and free of side effects.
- This expands to a constant expression if N and S are both constants.
- By gnulib convention, SIZE_MAX represents overflow in size_t
- calculations, so the conservative size_t-based dividend to use here
- is SIZE_MAX - 1. */
-#define __xalloc_oversized(n, s) \
- ((s) != 0 \
- && (PTRDIFF_MAX < SIZE_MAX ? PTRDIFF_MAX : SIZE_MAX - 1) / (s) < (n))
-
-/* Return 1 if and only if an array of N objects, each of size S,
- cannot exist reliably because its total size in bytes would exceed
- MIN (PTRDIFF_MAX, SIZE_MAX - 1).
-
- N and S should be nonnegative and free of side effects.
-
- Warning: (xalloc_oversized (N, S) ? NULL : malloc (N * S)) can
- misbehave if N and S are both narrower than ptrdiff_t and size_t,
- and can be rewritten as (xalloc_oversized (N, S) ? NULL
- : malloc (N * (size_t) S)).
-
- This is a macro, not a function, so that it works even if an
- argument exceeds MAX (PTRDIFF_MAX, SIZE_MAX). */
-#if 7 <= __GNUC__ && !defined __clang__ && PTRDIFF_MAX < SIZE_MAX
-# define xalloc_oversized(n, s) \
- __builtin_mul_overflow_p (n, s, (ptrdiff_t) 1)
-#elif 5 <= __GNUC__ && !defined __clang__ && !defined __ICC \
- && PTRDIFF_MAX < SIZE_MAX
-# define xalloc_oversized(n, s) \
- (__builtin_constant_p (n) && __builtin_constant_p (s) \
- ? __xalloc_oversized (n, s) \
- : __extension__ \
- ({ ptrdiff_t __xalloc_count; \
- __builtin_mul_overflow (n, s, &__xalloc_count); }))
-
-/* Other compilers use integer division; this may be slower but is
- more portable. */
-#else
-# define xalloc_oversized(n, s) __xalloc_oversized (n, s)
-#endif
-
-#endif /* !XALLOC_OVERSIZED_H_ */
diff --git a/m4/eealloc.m4 b/m4/eealloc.m4
deleted file mode 100644
index d26eb3060d5..00000000000
--- a/m4/eealloc.m4
+++ /dev/null
@@ -1,32 +0,0 @@
-# eealloc.m4
-# serial 3
-dnl Copyright (C) 2003, 2009-2025 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-AC_DEFUN([gl_EEALLOC],
-[
- AC_REQUIRE([gl_EEMALLOC])
- AC_REQUIRE([gl_EEREALLOC])
-])
-
-AC_DEFUN([gl_EEMALLOC],
-[
- _AC_FUNC_MALLOC_IF(
- [gl_cv_func_malloc_0_nonnull=1],
- [gl_cv_func_malloc_0_nonnull=0])
- AC_DEFINE_UNQUOTED([MALLOC_0_IS_NONNULL], [$gl_cv_func_malloc_0_nonnull],
- [If malloc(0) is != NULL, define this to 1. Otherwise define this
- to 0.])
-])
-
-AC_DEFUN([gl_EEREALLOC],
-[
- _AC_FUNC_REALLOC_IF(
- [gl_cv_func_realloc_0_nonnull=1],
- [gl_cv_func_realloc_0_nonnull=0])
- AC_DEFINE_UNQUOTED([REALLOC_0_IS_NONNULL], [$gl_cv_func_realloc_0_nonnull],
- [If realloc(NULL,0) is != NULL, define this to 1. Otherwise define this
- to 0.])
-])
diff --git a/m4/explicit_bzero.m4 b/m4/explicit_bzero.m4
deleted file mode 100644
index 6fa2eda9f6b..00000000000
--- a/m4/explicit_bzero.m4
+++ /dev/null
@@ -1,23 +0,0 @@
-dnl Copyright 2017-2025 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-AC_DEFUN([gl_FUNC_EXPLICIT_BZERO],
-[
- AC_REQUIRE([gl_STRING_H_DEFAULTS])
-
- dnl Persuade glibc to declare explicit_bzero.
- AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
-
- AC_CHECK_FUNCS_ONCE([explicit_bzero])
- if test $ac_cv_func_explicit_bzero = no; then
- HAVE_EXPLICIT_BZERO=0
- fi
-])
-
-AC_DEFUN([gl_PREREQ_EXPLICIT_BZERO],
-[
- AC_CHECK_FUNCS([explicit_memset])
- AC_CHECK_FUNCS_ONCE([memset_s])
-])
diff --git a/m4/st_dm_mode.m4 b/m4/st_dm_mode.m4
deleted file mode 100644
index 56748c385f0..00000000000
--- a/m4/st_dm_mode.m4
+++ /dev/null
@@ -1,24 +0,0 @@
-# serial 6
-
-# Copyright (C) 1998-1999, 2001, 2009-2025 Free Software Foundation,
-# Inc.
-# This file is free software; the Free Software Foundation
-# gives unlimited permission to copy and/or distribute it,
-# with or without modifications, as long as this notice is preserved.
-
-# Define HAVE_ST_DM_MODE if struct stat has an st_dm_mode member.
-
-AC_DEFUN([AC_STRUCT_ST_DM_MODE],
- [AC_CACHE_CHECK([for st_dm_mode in struct stat], [ac_cv_struct_st_dm_mode],
- [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
-#include
-#include ]], [[struct stat s; s.st_dm_mode;]])],
- [ac_cv_struct_st_dm_mode=yes],
- [ac_cv_struct_st_dm_mode=no])])
-
- if test $ac_cv_struct_st_dm_mode = yes; then
- AC_DEFINE([HAVE_ST_DM_MODE], [1],
- [Define if struct stat has an st_dm_mode member.])
- fi
- ]
-)
diff --git a/m4/year2038.m4 b/m4/year2038.m4
deleted file mode 100644
index 47693fb8f3a..00000000000
--- a/m4/year2038.m4
+++ /dev/null
@@ -1,132 +0,0 @@
-# year2038.m4 serial 8
-dnl Copyright (C) 2017-2025 Free Software Foundation, Inc.
-dnl This file is free software; the Free Software Foundation
-dnl gives unlimited permission to copy and/or distribute it,
-dnl with or without modifications, as long as this notice is preserved.
-
-dnl Attempt to ensure that 'time_t' can go past the year 2038 and that
-dnl the functions 'time', 'stat', etc. work with post-2038 timestamps.
-
-m4_ifdef([AC_SYS_YEAR2038], [
- AC_DEFUN([gl_YEAR2038_EARLY])
- AC_DEFUN([gl_YEAR2038], [AC_SYS_YEAR2038])
- AC_DEFUN([gl_YEAR2038_BODY], [_AC_SYS_YEAR2038])
-], [
-
-AC_DEFUN([gl_YEAR2038_EARLY],
-[
- AC_REQUIRE([AC_CANONICAL_HOST])
- case "$host_os" in
- mingw*)
- AC_DEFINE([__MINGW_USE_VC2005_COMPAT], [1],
- [For 64-bit time_t on 32-bit mingw.])
- ;;
- esac
-])
-
-# gl_YEAR2038_TEST_INCLUDES
-# -------------------------
-AC_DEFUN([gl_YEAR2038_TEST_INCLUDES],
-[[
- #include
- /* Check that time_t can represent 2**32 - 1 correctly. */
- #define LARGE_TIME_T \\
- ((time_t) (((time_t) 1 << 30) - 1 + 3 * ((time_t) 1 << 30)))
- int verify_time_t_range[(LARGE_TIME_T / 65537 == 65535
- && LARGE_TIME_T % 65537 == 0)
- ? 1 : -1];
-]])
-
-# gl_YEAR2038_BODY(REQUIRE-YEAR2038-SAFE)
------------------------------------------
-AC_DEFUN([gl_YEAR2038_BODY],
-[
- AC_ARG_ENABLE([year2038],
- [ --disable-year2038 omit support for timestamps past the year 2038])
- AS_IF([test "$enable_year2038" != no],
- [
- dnl On many systems, time_t is already a 64-bit type.
- dnl On those systems where time_t is still 32-bit, it requires kernel
- dnl and libc support to make it 64-bit. For glibc 2.34 and later on Linux,
- dnl defining _TIME_BITS=64 and _FILE_OFFSET_BITS=64 is needed on x86 and ARM.
- dnl
- dnl On native Windows, the system include files define types __time32_t
- dnl and __time64_t. By default, time_t is an alias of
- dnl - __time32_t on 32-bit mingw,
- dnl - __time64_t on 64-bit mingw and on MSVC (since MSVC 8).
- dnl But when compiling with -D__MINGW_USE_VC2005_COMPAT, time_t is an
- dnl alias of __time64_t.
- dnl And when compiling with -D_USE_32BIT_TIME_T, time_t is an alias of
- dnl __time32_t.
- AC_CACHE_CHECK([for time_t past the year 2038], [gl_cv_type_time_t_y2038],
- [AC_COMPILE_IFELSE(
- [AC_LANG_SOURCE([gl_YEAR2038_TEST_INCLUDES])],
- [gl_cv_type_time_t_y2038=yes], [gl_cv_type_time_t_y2038=no])
- ])
- if test "$gl_cv_type_time_t_y2038" = no; then
- AC_CACHE_CHECK([for 64-bit time_t with _TIME_BITS=64],
- [gl_cv_type_time_t_bits_macro],
- [AC_COMPILE_IFELSE(
- [AC_LANG_SOURCE([[#define _TIME_BITS 64
- #define _FILE_OFFSET_BITS 64
- ]gl_YEAR2038_TEST_INCLUDES])],
- [gl_cv_type_time_t_bits_macro=yes],
- [gl_cv_type_time_t_bits_macro=no])
- ])
- if test "$gl_cv_type_time_t_bits_macro" = yes; then
- AC_DEFINE([_TIME_BITS], [64],
- [Number of bits in a timestamp, on hosts where this is settable.])
- dnl AC_SYS_LARGFILE also defines this; it's OK if we do too.
- AC_DEFINE([_FILE_OFFSET_BITS], [64],
- [Number of bits in a file offset, on hosts where this is settable.])
- gl_cv_type_time_t_y2038=yes
- fi
- fi
- if test $gl_cv_type_time_t_y2038 = no; then
- AC_COMPILE_IFELSE(
- [AC_LANG_SOURCE(
- [[#ifdef _USE_32BIT_TIME_T
- int ok;
- #else
- error fail
- #endif
- ]])],
- [AC_MSG_FAILURE(
- [The 'time_t' type stops working after January 2038.
- Remove _USE_32BIT_TIME_T from the compiler flags.])],
- [# If not cross-compiling and $1 says we should check,
- # and 'touch' works with a large timestamp, then evidently wider time_t
- # is desired and supported, so fail and ask the builder to fix the
- # problem. Otherwise, just warn the builder.
- m4_ifval([$1],
- [if test $cross_compiling = no \
- && TZ=UTC0 touch -t 210602070628.15 conftest.time 2>/dev/null; then
- case `TZ=UTC0 LC_ALL=C ls -l conftest.time 2>/dev/null` in
- *'Feb 7 2106'* | *'Feb 7 17:10'*)
- AC_MSG_FAILURE(
- [The 'time_t' type stops working after January 2038,
- and your system appears to support a wider 'time_t'.
- Try configuring with 'CC="${CC} -m64"'.
- To build with a 32-bit time_t anyway (not recommended),
- configure with '--disable-year2038'.]);;
- esac
- rm -f conftest.time
- fi])
- if test "$gl_warned_about_y2038" != yes; then
- AC_MSG_WARN(
- [The 'time_t' type stops working after January 2038,
- and this package needs a wider 'time_t' type
- if there is any way to access timestamps after that.
- Configure with 'CC="${CC} -m64"' perhaps?])
- gl_warned_about_y2038=yes
- fi
- ])
- fi])
-])
-
-AC_DEFUN([gl_YEAR2038],
-[
- gl_YEAR2038_BODY([require-year2038-safe])
-])
-
-]) # m4_ifndef AC_SYS_YEAR2038