[PATCH 1/6] builtin-checkout.c: check error return from read_cache()

[Junio C Hamano <gitster@pobox.com>]

Signed-off-by: Junio C Hamano <gitster@pobox.com>
---
 builtin-checkout.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/builtin-checkout.c b/builtin-checkout.c
index 7f3bd7b..c2c0561 100644
--- a/builtin-checkout.c
+++ b/builtin-checkout.c
@@ -228,7 +228,8 @@ static int checkout_paths(struct tree *source_tree, const char **pathspec,
 	struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
 
 	newfd = hold_locked_index(lock_file, 1);
-	read_cache();
+	if (read_cache() < 0)
+		return error("corrupt index file");
 
 	if (source_tree)
 		read_tree_some(source_tree, pathspec);
@@ -371,7 +372,9 @@ static int merge_working_tree(struct checkout_opts *opts,
 	int ret;
 	struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file));
 	int newfd = hold_locked_index(lock_file, 1);
-	read_cache();
+
+	if (read_cache() < 0)
+		return error("corrupt index file");
 
 	if (opts->force) {
 		ret = reset_tree(new->commit->tree, opts, 1);
-- 
1.6.1.rc1.72.ga5ce6