From 2c004dbcc92684c484078727897e04b74f01b28c Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Tue, 16 Aug 2022 12:02:14 +0100
Subject: [PATCH] Improve `matrix` conversion rules

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

diff --git a/src/check_expr.cpp b/src/check_expr.cpp
index 310874139..9c2d20781 100644
--- a/src/check_expr.cpp
+++ b/src/check_expr.cpp
@@ -818,6 +818,10 @@ i64 check_distance_between_types(CheckerContext *c, Operand *operand, Type *type
 	}
 	
 	if (is_type_matrix(dst)) {
+		if (are_types_identical(src, dst)) {
+			return 5;
+		}
+
 		Type *dst_elem = base_array_type(dst);
 		i64 distance = check_distance_between_types(c, operand, dst_elem);
 		if (distance >= 0) {