vm.c (OP_ENTER): protect kdict from GC; ref
@@ -2019,6 +2019,7 @@ RETRY_TRY_BLOCK:
argv = ARY_PTR(ary);
argc = (int)ARY_LEN(ary);
mrb_gc_protect(mrb, regs[1]);
+ if (!mrb_nil_p(kdict)) mrb_gc_protect(mrb, kdict);
}
/* strict argument check */
