diff options
Diffstat (limited to 'vm.c')
-rw-r--r-- | vm.c | 4 |
1 files changed, 3 insertions, 1 deletions
@@ -2174,7 +2174,9 @@ static int kwmerge_i(VALUE key, VALUE value, VALUE hash) { if (!SYMBOL_P(key)) Check_Type(key, T_SYMBOL); - st_update(RHASH_TBL(hash), key, kwmerge_ii, (st_data_t)value); + if (st_update(RHASH_TBL(hash), key, kwmerge_ii, (st_data_t)value) == 0) { /* !existing */ + OBJ_WRITTEN(hash, Qundef, value); + } return ST_CONTINUE; } |