[PATCH 2/6] builtin/stash: fill in all commit data

["brian m. carlson" <sandals@crustytoothpaste.net>]

get_stash_info doesn't ensure that all entries are filled in in all
cases.  However, we'll want to use this information to write new
commits, and when we do so, we'll need all the information to be
present.  Fill in all the commit information whenever we call this
function.

Note that the behavior of info->has_u doesn't change here.  If we
previously read a tree a refs/stash^3:, then refs/stash^3 must be a
treeish.  We already here assume that the other parents specifically
commits, so it should be safe to do so here as well.

Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
---
 builtin/stash.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/builtin/stash.c b/builtin/stash.c
index 2aa06cc91d..128f0a01ef 100644
--- a/builtin/stash.c
+++ b/builtin/stash.c
@@ -124,6 +124,7 @@ static void free_stash_info(struct stash_info *info)
 static void assert_stash_like(struct stash_info *info, const char *revision)
 {
 	if (get_oidf(&info->b_commit, "%s^1", revision) ||
+	    get_oidf(&info->i_commit, "%s^2", revision) ||
 	    get_oidf(&info->w_tree, "%s:", revision) ||
 	    get_oidf(&info->b_tree, "%s^1:", revision) ||
 	    get_oidf(&info->i_tree, "%s^2:", revision))
@@ -166,7 +167,8 @@ static int get_stash_info_1(struct stash_info *info, const char *commit, int qui
 
 	assert_stash_like(info, revision);
 
-	info->has_u = !get_oidf(&info->u_tree, "%s^3:", revision);
+	info->has_u = !get_oidf(&info->u_commit, "%s^3", revision) &&
+		      !get_oidf(&info->u_tree, "%s^3:", revision);
 
 	end_of_rev = strchrnul(revision, '@');
 	strbuf_add(&symbolic, revision, end_of_rev - revision);