From af33eec793ebde5b3d4411255a6eace64023cb85 Mon Sep 17 00:00:00 2001
From: Meder Kydyraliev <1212257+meder@users.noreply.github.com>
Date: Fri, 17 Oct 2025 10:03:01 +1100
Subject: [PATCH] Fix crash caused by an incorrect node type check in
 `codegen_masgn`

Use the dedicated function `get_node_type(t)` to correctly determine the node type, instead of the incorrect `node_to_int(t->car)` check.

OSS-Fuzz issue details:
https://oss-fuzz.com/testcase-detail/4760884737277952
https://g-issues.oss-fuzz.com/issues/449498801
---
 mrbgems/mruby-compiler/core/codegen.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mrbgems/mruby-compiler/core/codegen.c b/mrbgems/mruby-compiler/core/codegen.c
index 76a9edd54..ed90a8b2f 100644
--- a/mrbgems/mruby-compiler/core/codegen.c
+++ b/mrbgems/mruby-compiler/core/codegen.c
@@ -4386,7 +4386,7 @@ codegen_masgn(codegen_scope *s, node *varnode, node *rhs, int sp, int val)
   node *t = rhs ? rhs : masgn_n->rhs, *p;
   int rhs_reg = sp;
 
-  if (!val && t && node_to_int(t->car) == NODE_ARRAY && t->cdr && nosplat(t->cdr)) {
+  if (!val && t && get_node_type(t) == NODE_ARRAY && t->cdr && nosplat(t->cdr)) {
     /* fixed rhs */
     t = t->cdr;
     while (t) {