From c1333d75ef9886fb4f1e89fc5dec6ad1a7bb523e Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Mon, 31 Mar 2025 16:32:55 +0100
Subject: Add `##` and `##=` operators

---
 src/check_expr.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'src/check_expr.cpp')

diff --git a/src/check_expr.cpp b/src/check_expr.cpp
index 91d9e669f..72de88f61 100644
--- a/src/check_expr.cpp
+++ b/src/check_expr.cpp
@@ -1995,6 +1995,12 @@ gb_internal bool check_binary_op(CheckerContext *c, Operand *o, Token op) {
 			return false;
 		}
 		break;
+	case Token_Concat:
+	case Token_ConcatEq:
+		if (!is_type_integer(type)) {
+			error(op, "Operator '%.*s' is only allowed with integer expressions", LIT(op.string));
+		}
+		break;
 
 	case Token_Add:
 		if (is_type_string(type)) {
-- 
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