[PATCH] git-show: only chdir(prefix) when prefix is not NULL, and check for success

From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Dec 2, 2007, 01:42 UTC
Message-ID: <Pine.LNX.4.64.0712020141530.27959@racer.site>

We blindly called "chdir(prefix);" and did not even check if it succeeded. Found by valgrind.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>
---
 builtin-log.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/builtin-log.c b/builtin-log.c
index 21f3b0f..0f38579 100644
--- a/builtin-log.c
+++ b/builtin-log.c
@@ -285,7 +285,8 @@ int cmd_show(int argc, const char **argv, const char *prefix)
 	struct object_array_entry *objects;
 	int i, count, ret = 0;
 
-	chdir(prefix);
+	if (prefix && chdir(prefix))
+		die ("Could not change directory to '%s'", prefix);
 
 	git_config(git_log_config);
 	init_revisions(&rev, prefix);

-- 
1.5.3.6.2112.ge2263