[PATCH] Avoid usage of PATH_MAX.

[Jan Nieuwenhuizen]

Hi!

Initially I sent this patch to address@hidden, through fencepost, and
got a bounce.  Also, I went to look for the archives, but it seems that
bug-less is not a list?

Greetings,
janneke

>From ef652341ed8b2c14ac40312ccd4ed329cb69fd0c Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <address@hidden>
Date: Sat, 7 Mar 2020 14:57:19 +0100
Subject: [PATCH] Avoid usage of PATH_MAX.

* filename.c (lrealpath): Have realpath allocate the buffer.  Fixes
compilation on the Hurd and avoids possible buffer overflow on other
systems.
---
 filename.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/filename.c b/filename.c
index e420837..faa71b0 100644
--- a/filename.c
+++ b/filename.c
@@ -795,9 +795,9 @@ lrealpath(path)
        char *path;
 {
 #if HAVE_REALPATH
-       char rpath[PATH_MAX];
-       if (realpath(path, rpath) != NULL)
-               return (save(rpath));
+       char *rpath = NULL;
+       if ((rpath = realpath(path, rpath)) != NULL)
+               return (rpath);
 #endif
        return (save(path));
 }
-- 
2.24.0

-- 
Jan Nieuwenhuizen <address@hidden> | GNU LilyPond http://lilypond.org
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