From 8ab53e65a60cc151ff9b5b48c749d40e0bd58756 Mon Sep 17 00:00:00 2001
From: Martin Liska <mliska@suse.cz>
Date: Mon, 16 May 2022 11:07:57 +0200
Subject: [PATCH] opts-global.cc: document last change

gcc/ChangeLog:

	* opts-global.cc (write_langs): Add comment.
---
 gcc/opts-global.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/gcc/opts-global.cc b/gcc/opts-global.cc
index 4f5f8cdcb98..4355e26747a 100644
--- a/gcc/opts-global.cc
+++ b/gcc/opts-global.cc
@@ -61,6 +61,8 @@ write_langs (unsigned int mask)
     if (mask & (1U << n))
       len += strlen (lang_name) + 1;
 
+  /* Allocate at least one character as we'll terminate the string
+     at the very end of this function.  */
   result = XNEWVEC (char, MAX (1, len));
   len = 0;
   for (n = 0; (lang_name = lang_names[n]) != 0; n++)
-- 
2.47.2