vm.c: should check type before hash access.
Since the operand of double splat (`**`) may not be a hash, simple
assertion (previous code since d42a64e) was not enough for this case.
MODIFY
src/vm.c
src/vm.c
@@ -2766,7 +2766,7 @@ RETRY_TRY_BLOCK:
int lim = a+b*2+1;
hash = regs[a];
- mrb_assert(mrb_hash_p(hash));
+ mrb_ensure_hash_type(mrb, hash);
for (i=a+1; i<lim; i+=2) {
mrb_hash_set(mrb, hash, regs[i], regs[i+1]);
}

vm.c: should check type before hash access.

Since the operand of double splat (`**`) may not be a hash, simple
assertion (previous code since d42a64e) was not enough for this case.