From 0179e3e062b9287bc5b9812e4be0cbe7eac49ac0 Mon Sep 17 00:00:00 2001
From: Paul Eggert <eggert@cs.ucla.edu>
Date: Fri, 1 May 2026 17:59:14 -0700
Subject: [PATCH] Work around GCC bug 125116

* configure.ac: When configured with --enable-gcc-warnings,
use the -Wno-analyzer-allocation-size option if available.
This works around a false positive bug in
GCC 16.0.1 20260321 (Red Hat 16.0.1-0) x86-64; see
<https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125116>.
---
 configure.ac | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/configure.ac b/configure.ac
index a3ba5e69a2f..eeaaaa53a3d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1790,7 +1790,9 @@ AS_IF([test $gl_gcc_warnings = no],
        ;;
   esac
   AS_IF([test $gl_gcc_warnings = yes],
-    [WERROR_CFLAGS=-Werror],
+    [WERROR_CFLAGS=-Werror
+     # Work around GCC bug 125116.
+     gl_WARN_ADD([-Wno-analyzer-allocation-size])],
     [# Use -fanalyzer and related options only if --enable-gcc-warnings,
      # as they slow GCC considerably.
      nw="$nw -fanalyzer -Wno-analyzer-double-free -Wno-analyzer-malloc-leak"