struct ref_update: store refname as a FLEX_ARRAY

Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Michael Haggerty committed Apr 7, 2014 at 15:48 UTC 88615910db7f700ae437318308a8631888bd28cd
1 file changed +6 -9
refs.c
+6 -9
@@ -3274,11 +3274,11 @@ static int update_ref_write(const char *action, const char *refname,
3274 * value or to zero to ensure the ref does not exist before update.
3275 */
3276 struct ref_update {
3277 - const char *refname;
3277 unsigned char new_sha1[20];
3278 unsigned char old_sha1[20];
3279 int flags; /* REF_NODEREF? */
3280 int have_old; /* 1 if old_sha1 is valid, 0 otherwise */
3281 + const char refname[FLEX_ARRAY];
3282 };
3283
3284 /*
@@ -3301,12 +3301,8 @@ static void ref_transaction_free(struct ref_transaction *transaction)
3301 {
3302 int i;
3303
3304 - for (i = 0; i < transaction->nr; i++) {
3305 - struct ref_update *update = transaction->updates[i];
3306 -
3307 - free((char *)update->refname);
3308 - free(update);
3309 - }
3304 + for (i = 0; i < transaction->nr; i++)
3305 + free(transaction->updates[i]);
3306
3307 free(transaction->updates);
3308 free(transaction);
@@ -3320,9 +3316,10 @@ void ref_transaction_rollback(struct ref_transaction *transaction)
3316 static struct ref_update *add_update(struct ref_transaction *transaction,
3317 const char *refname)
3318 {
3323 - struct ref_update *update = xcalloc(1, sizeof(*update));
3319 + size_t len = strlen(refname);
3320 + struct ref_update *update = xcalloc(1, sizeof(*update) + len + 1);
3321
3325 - update->refname = xstrdup(refname);
3322 + strcpy((char *)update->refname, refname);
3323 ALLOC_GROW(transaction->updates, transaction->nr + 1, transaction->alloc);
3324 transaction->updates[transaction->nr++] = update;
3325 return update;