diff options
Diffstat (limited to 'refs.c')
| -rw-r--r-- | refs.c | 16 |
1 files changed, 13 insertions, 3 deletions
@@ -681,9 +681,19 @@ static int write_pseudoref(const char *pseudoref, const struct object_id *oid, if (old_oid) { struct object_id actual_old_oid; - if (read_ref(pseudoref, &actual_old_oid)) - die("could not read ref '%s'", pseudoref); - if (oidcmp(&actual_old_oid, old_oid)) { + if (read_ref(pseudoref, &actual_old_oid)) { + if (!is_null_oid(old_oid)) { + strbuf_addf(err, "could not read ref '%s'", + pseudoref); + rollback_lock_file(&lock); + goto done; + } + } else if (is_null_oid(old_oid)) { + strbuf_addf(err, "ref '%s' already exists", + pseudoref); + rollback_lock_file(&lock); + goto done; + } else if (oidcmp(&actual_old_oid, old_oid)) { strbuf_addf(err, "unexpected object ID when writing '%s'", pseudoref); rollback_lock_file(&lock); |