Re: [PATCH] malloc: port to current -m32 AddressSanitizer

Paul Eggert [2026-07-27 15:09 -0700] wrote:

> Also, port better to non-glibc, and in documentation update the
> list of platforms needing a fix.  This includes 32-bit platforms
> using AddressSanitizer, unfortunately.
> * m4/malloc.m4 (gl_CHECK_MALLOC_PTRDIFF): Invoke gl_MUSL_LIBC.
> musl is safe, as is FreeBSD 11+, NetBSD 8+, OpenBSD 5.6+, AIX,
> Microsoft Windows.  However, the AddressSanitizer is unsafe.

Following this change I see the following error during bootstrap:

  autoreconf: running: /usr/bin/autoconf --force
  configure:18862: error: undefined or overquoted macro: gl_MUSL_LIBC
        If this token and others are legitimate, please use m4_pattern_allow.
        See the Autoconf documentation.
  autoreconf: error: /usr/bin/autoconf failed with exit status: 1
  ./bootstrap: autoreconf failed

That is in a project of mine that builds a dynamic module for Emacs, but
I was able to reproduce the same error in a dummy reproducer project
with only the following change:


Here's the full recipe:

0. cd "$(mktemp -d)"
1. git clone 'https://git.sr.ht/~blc/foo'
2. cd foo && ./bootstrap

Hopefully the cause is more obvious to you, as I won't be able to look
into this for another week or two, sorry.

Thanks,
-- 
Basil

diff --git a/bootstrap.conf b/bootstrap.conf
index 52f4fdf..4ac6e8a 100644
--- a/bootstrap.conf
+++ b/bootstrap.conf
@@ -10,13 +10,13 @@ checkout_only_file=.gitignore
 
 gnulib_modules='
   bool
+  calloc-gnu
   config-h
   git-version-gen
   maintainer-makefile
   std-gnu23
   stddef-h
   stdint-h
-  stdio-h
   stdlib-h
   string-h
 '