From 81a8786ca22b8edf8b18c8208bf1bffd868cd8fd Mon Sep 17 00:00:00 2001
From: Alexander Medvednikov <alexander@medvednikov.com>
Date: Tue, 21 Apr 2026 15:24:35 +0300
Subject: [PATCH] tests: add test for or handling from result unexpected
 behavior (fixes #17850)

---
 vlib/v/tests/match_or_expr_test.v | 40 +++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)

diff --git a/vlib/v/tests/match_or_expr_test.v b/vlib/v/tests/match_or_expr_test.v
index e9634bdbe..4ab3847a6 100644
--- a/vlib/v/tests/match_or_expr_test.v
+++ b/vlib/v/tests/match_or_expr_test.v
@@ -14,3 +14,43 @@ fn test_main() {
 
 	assert result == 1
 }
+
+struct Issue17850Error {
+	Error
+}
+
+struct Issue17850Data {
+pub:
+	name string
+}
+
+fn (_ &Issue17850Error) msg() string {
+	return 'issue 17850'
+}
+
+fn issue17850_do_thing(name string, fail bool) !Issue17850Data {
+	if fail {
+		return Issue17850Error{}
+	}
+	return Issue17850Data{
+		name: name
+	}
+}
+
+fn test_result_or_block_match_error_type() {
+	data := issue17850_do_thing('my_db', true) or {
+		match err {
+			Issue17850Error {
+				Issue17850Data{
+					name: 'my_db'
+				}
+			}
+			else {
+				panic(err)
+			}
+		}
+	}
+	assert data == Issue17850Data{
+		name: 'my_db'
+	}
+}
-- 
2.39.5