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Diffstat (limited to 'patch-ids.c')
-rw-r--r--patch-ids.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/patch-ids.c b/patch-ids.c
index 082412aca6..ce285c2e0c 100644
--- a/patch-ids.c
+++ b/patch-ids.c
@@ -4,9 +4,18 @@
#include "sha1-lookup.h"
#include "patch-ids.h"
+static int patch_id_defined(struct commit *commit)
+{
+ /* must be 0 or 1 parents */
+ return !commit->parents || !commit->parents->next;
+}
+
int commit_patch_id(struct commit *commit, struct diff_options *options,
unsigned char *sha1, int diff_header_only)
{
+ if (!patch_id_defined(commit))
+ return -1;
+
if (commit->parents)
diff_tree_sha1(commit->parents->item->object.oid.hash,
commit->object.oid.hash, "", options);
@@ -45,6 +54,7 @@ int init_patch_ids(struct patch_ids *ids)
{
memset(ids, 0, sizeof(*ids));
diff_setup(&ids->diffopts);
+ ids->diffopts.detect_rename = 0;
DIFF_OPT_SET(&ids->diffopts, RECURSIVE);
diff_setup_done(&ids->diffopts);
hashmap_init(&ids->patches, (hashmap_cmp_fn)patch_id_cmp, 256);
@@ -76,6 +86,9 @@ struct patch_id *has_commit_patch_id(struct commit *commit,
{
struct patch_id patch;
+ if (!patch_id_defined(commit))
+ return NULL;
+
memset(&patch, 0, sizeof(patch));
if (init_patch_id_entry(&patch, commit, ids))
return NULL;
@@ -88,6 +101,9 @@ struct patch_id *add_commit_patch_id(struct commit *commit,
{
struct patch_id *key = xcalloc(1, sizeof(*key));
+ if (!patch_id_defined(commit))
+ return NULL;
+
if (init_patch_id_entry(key, commit, ids)) {
free(key);
return NULL;