It simplifies the code a bit and avoid the clang warning:

  ./config.h:12:2: error: #include_next in file found relative to primary
  source file or found by absolute path; will search from start of include
  path [-Werror,-Winclude-next-absolute-path]
  #include_next <config.h>
   ^

Reviewed-by: Sam James <sam@gentoo.org>

Fix variables in Makefiles:

1. There is a tab, not a space, between "variable" and =, +=, :=.
2. The last entry doesn't have a trailing \.

and sort them.

Signed-off-by: H.J. Lu <hjl.tools@gmail.com>

Replace 0 by NULL and {0} by {}.

Omit a few cases that aren't so trivial to fix.

Link: <https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117059>
Link: <https://software.codidact.com/posts/292718/292759#answer-292759>
Signed-off-by: Alejandro Colomar <alx@kernel.org>

The conditionals for several mtrace-based tests in catgets, elf, libio,
malloc, misc, nptl, posix, and stdio-common were incorrect leading to
test failures when bootstrapping glibc without perl.

The correct conditional for mtrace-based tests requires three checks:
first checking for run-built-tests, then build-shared, and lastly that
PERL is not equal to "no" (missing perl).
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

I've updated copyright dates in glibc for 2024.  This is the patch for
the changes not generated by scripts/update-copyrights and subsequent
build / regeneration of generated files.

Convert to scratch_buffers to avoid potential stack overflow.

Checked on x86_64-linux-gnu and aarch64-linux-gnu.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

Since these functions are used in both catgets/gencat.c and
malloc/memusage{,stat}.c, it make sense to move them into a dedicated
header where they can be inlined.

Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

Fix unused result warnings, detected when _FORTIFY_SOURCE is enabled in
glibc.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>