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Merge branch 'rs/checkout-am-fix-unborn'

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A few codepaths in "checkout" and "am" working on an unborn branch
tried to access an uninitialized piece of memory.

* rs/checkout-am-fix-unborn:
  am: check return value of resolve_refdup before using hash
  checkout: check return value of resolve_refdup before using hash
This commit is contained in:
Junio C Hamano 2017-05-23 13:46:05 +09:00
parent dcad9a4c87 57e0ef0e0e
commit e40c0f4288
2 changed files with 3 additions and 2 deletions
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2
builtin/am.c
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@ -2150,7 +2150,7 @@ static void am_abort(struct am_state *state)
am_rerere_clear();
curr_branch = resolve_refdup("HEAD", 0, curr_head.hash, NULL);
has_curr_head = !is_null_oid(&curr_head);
has_curr_head = curr_branch && !is_null_oid(&curr_head);
if (!has_curr_head)
hashcpy(curr_head.hash, EMPTY_TREE_SHA1_BIN);

3
builtin/checkout.c
View file

@ -833,7 +833,8 @@ static int switch_branches(const struct checkout_opts *opts,
int flag, writeout_error = 0;
memset(&old, 0, sizeof(old));
old.path = path_to_free = resolve_refdup("HEAD", 0, rev.hash, &flag);
old.commit = lookup_commit_reference_gently(rev.hash, 1);
if (old.path)
old.commit = lookup_commit_reference_gently(rev.hash, 1);
if (!(flag & REF_ISSYMREF))
old.path = NULL;