From ce026ff2c4ef1b29d3876f1ab5c866eda7995679 Mon Sep 17 00:00:00 2001
From: gingerBill <bill@gingerbill.org>
Date: Mon, 24 Mar 2025 13:13:25 +0000
Subject: Fix #4949

---
 src/check_builtin.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'src/check_builtin.cpp')

diff --git a/src/check_builtin.cpp b/src/check_builtin.cpp
index a49302a69..fa3218759 100644
--- a/src/check_builtin.cpp
+++ b/src/check_builtin.cpp
@@ -645,6 +645,13 @@ gb_internal bool check_builtin_simd_operation(CheckerContext *c, Operand *operan
 				break;
 			}
 
+			if (!are_types_identical(x.type, y.type)) {
+				gbString tx = type_to_string(x.type);
+				gbString ty = type_to_string(y.type);
+				error(call, "Mismatched types to '%.*s', '%s' vs '%s'", LIT(builtin_name), tx, ty);
+				gb_string_free(ty);
+				gb_string_free(tx);
+			}
 
 			Type *vt = base_type(x.type);
 			GB_ASSERT(vt->kind == Type_SimdVector);
-- 
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