From f735e794a6ddaabe4289834783f562a13b2c9560 Mon Sep 17 00:00:00 2001
From: A1029384756 <hayden.gray104@gmail.com>
Date: Thu, 4 Jun 2026 16:03:45 -0400
Subject: [PATCH] [checker] disallow `*` and `/` for bit sets

---
 src/check_expr.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/check_expr.cpp b/src/check_expr.cpp
index 8681d22ba..c373c2738 100644
--- a/src/check_expr.cpp
+++ b/src/check_expr.cpp
@@ -2131,6 +2131,10 @@ gb_internal bool check_binary_op(CheckerContext *c, Operand *o, Token op) {
 		/*fallthrough*/
 	case Token_Mul:
 	case Token_MulEq:
+		if (is_type_bit_set(type)) {
+			error(op, "Operator '%.*s' is not allowed with bit sets", LIT(op.string));
+			return false;
+		}
 	case Token_AddEq:
 		if (is_type_bit_set(type)) {
 			return true;