summary refs log tree commit diff
path: root/gnu/packages/patches/less-hurd-path-max.patch
blob: 4d23a0878849797001c9bb9968920028a736fd7a (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
Avoid usage of PATH_MAX.

Submitted to bug-less@gnu.org.

From ef652341ed8b2c14ac40312ccd4ed329cb69fd0c Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <janneke@gnu.org>
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