vm.c: precedence of duplicated keys

* vm.c (kwmerge_i): override existing keys by new keys.
  [ruby-core:65368] [Bug #10315]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@47878 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 11 deletions

diff --git a/vm.c b/vm.c
index 0c45f96c38..3a4b26195e 100644
--- a/vm.c
+++ b/vm.c
@@ -2343,20 +2343,10 @@ m_core_hash_merge_ptr(int argc, VALUE *argv, VALUE recv)
 }
 
 static int
-kwmerge_ii(st_data_t *key, st_data_t *value, st_data_t arg, int existing)
-{
-    if (existing) return ST_STOP;
-    *value = arg;
-    return ST_CONTINUE;
-}
-
-static int
 kwmerge_i(VALUE key, VALUE value, VALUE hash)
 {
     if (!SYMBOL_P(key)) Check_Type(key, T_SYMBOL);
-    if (st_update(RHASH_TBL_RAW(hash), key, kwmerge_ii, (st_data_t)value) == 0) { /* !existing */
-	RB_OBJ_WRITTEN(hash, Qundef, value);
-    }
+    rb_hash_aset(hash, key, value);
     return ST_CONTINUE;
 }