From: Michihiro NAKAJIMA <ggcueroad@gmail.com>
Date: Sun, 2 Dec 2012 10:53:27 +0000 (+0900)
Subject: Fix a null pointer dereference bug in ar writer.
X-Git-Tag: v3.1.0~35
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9208ce6f0225053717236c310556308fdf746558;p=thirdparty%2Flibarchive.git

Fix a null pointer dereference bug in ar writer.
---

diff --git a/libarchive/archive_write_set_format_ar.c b/libarchive/archive_write_set_format_ar.c
index beff49031..9f17564c3 100644
--- a/libarchive/archive_write_set_format_ar.c
+++ b/libarchive/archive_write_set_format_ar.c
@@ -165,7 +165,7 @@ archive_write_ar_header(struct archive_write *a, struct archive_entry *entry)
 	 * Reject files with empty name.
 	 */
 	pathname = archive_entry_pathname(entry);
-	if (*pathname == '\0') {
+	if (pathname == NULL || *pathname == '\0') {
 		archive_set_error(&a->archive, EINVAL,
 		    "Invalid filename");
 		return (ARCHIVE_WARN);