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-rw-r--r--src/hash.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/hash.c b/src/hash.c
index 128836fce..fd338d53b 100644
--- a/src/hash.c
+++ b/src/hash.c
@@ -1072,7 +1072,8 @@ mrb_hash_shift(mrb_state *mrb, mrb_value hash)
mrb_hash_modify(mrb, hash);
if (t && t->size > 0) {
- mrb_value del_key, del_val;
+ mrb_value del_key = mrb_nil_value();
+ mrb_value del_val = mrb_nil_value();
ht_shift(mrb, t, &del_key, &del_val);
mrb_gc_protect(mrb, del_key);