[PATCH] do not segfault if make_cache_entry failed

[Dmitry Potapov <dpotapov@gmail.com>]

Signed-off-by: Dmitry Potapov <dpotapov@gmail.com>
---
 builtin-apply.c    |    2 ++
 builtin-checkout.c |    2 ++
 builtin-reset.c    |    3 +++
 3 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/builtin-apply.c b/builtin-apply.c
index e2c611b..342f2fe 100644
--- a/builtin-apply.c
+++ b/builtin-apply.c
@@ -2586,6 +2586,8 @@ static void build_fake_ancestor(struct patch *list, const char *filename)
 			sha1_ptr = sha1;
 
 		ce = make_cache_entry(patch->old_mode, sha1_ptr, name, 0, 0);
+		if (!ce)
+			die("make_cache_entry failed for path '%s'", name);
 		if (add_index_entry(&result, ce, ADD_CACHE_OK_TO_ADD))
 			die ("Could not add %s to temporary index", name);
 	}
diff --git a/builtin-checkout.c b/builtin-checkout.c
index b572b3b..3762f71 100644
--- a/builtin-checkout.c
+++ b/builtin-checkout.c
@@ -206,6 +206,8 @@ static int checkout_merged(int pos, struct checkout *state)
 	ce = make_cache_entry(create_ce_mode(active_cache[pos+1]->ce_mode),
 			      sha1,
 			      path, 2, 0);
+	if (!ce)
+		die("make_cache_entry failed for path '%s'", path);
 	status = checkout_entry(ce, state, NULL);
 	return status;
 }
diff --git a/builtin-reset.c b/builtin-reset.c
index c24c219..16e6bb2 100644
--- a/builtin-reset.c
+++ b/builtin-reset.c
@@ -121,6 +121,9 @@ static void update_index_from_diff(struct diff_queue_struct *q,
 			struct cache_entry *ce;
 			ce = make_cache_entry(one->mode, one->sha1, one->path,
 				0, 0);
+			if (!ce)
+				die("make_cache_entry failed for path '%s'",
+				    one->path);
 			add_cache_entry(ce, ADD_CACHE_OK_TO_ADD |
 				ADD_CACHE_OK_TO_REPLACE);
 		} else
-- 
1.6.0