From: Jim Meyering <jim@meyering.net>
Date: Mon, 3 Sep 2001 18:25:58 +0000 (+0000)
Subject: (xreadlink): Preserve errno around `free' during failure.
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0bd7218d197c02dcc5706bc1a7f5c92189dc20ca;p=pspp

(xreadlink): Preserve errno around `free' during failure.
---

diff --git a/lib/xreadlink.c b/lib/xreadlink.c
index 881b794f18..a01833381a 100644
--- a/lib/xreadlink.c
+++ b/lib/xreadlink.c
@@ -58,7 +58,9 @@ xreadlink (char const *filename, size_t *link_length_arg)
       link_length = readlink (filename, buffer, buf_size);
       if (link_length < 0)
 	{
+	  int saved_errno = errno;
 	  free (buffer);
+	  errno = saved_errno;
 	  return NULL;
 	}
       if (link_length < buf_size)