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[CS] Set the naming pattern in markInvalid

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This normally gets populated by successful type-checking, we still want
to populate it if we fail though to avoid attempting to type-check the
parent statement again.
This commit is contained in:
Hamish Knight
2025-09-09 13:48:40 +01:00
parent 84847bcd06
commit 10ed17549c
3 changed files with 8 additions and 2 deletions
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test/Parse/matching_patterns.swift
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@@ -406,7 +406,7 @@ func testNonBinding5(_ x: Int, y: [Int]) {
func testNonBinding6(y: [Int], z: Int) -> Int {
switch 0 {
// We treat 'z' here as a binding, which is invalid.
case let y[z]: // expected-error 2{{pattern variable binding cannot appear in an expression}}
case let y[z]: // expected-error {{pattern variable binding cannot appear in an expression}}
z
case y[z]: // This is fine
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