Need to support multiple `**` splats in argument list; fix
MODIFY
mrbgems/mruby-compiler/core/codegen.c
mrbgems/mruby-compiler/core/codegen.c
@@ -1786,7 +1786,7 @@ codegen(codegen_scope *s, node *tree, int val)
push();
}
codegen(s, tree->car->cdr, VAL);
- if (len > 0) {
+ if (len > 0 || update) {
pop(); pop();
genop_1(s, OP_HASHCAT, cursp());
push();

Need to support multiple `**` splats in argument list; fix #4106