Files
swift-mirror/validation-test/compiler_crashers_fixed/28790-conformance-getwitness-requirement-nullptr-getdecl-already-have-a-non-optional-w.swift
Doug Gregor 8b58b0dbb4 [Type checker] Make redeclaration checking validate fewer declarations.
Redeclaration checking was validating all declarations with the same
base name as the given declaration (and in the same general nominal
type), even when it was trivial to determine that the declarations
could not be conflicting. Separate out the easy structural checks
(based on kind, full name, instance vs. non-instance member, etc.) and
perform those first, before validation.

Fixes SR-6558, a case where redeclaration checking caused some
unnecessary recursion in the type checker.
2017-12-30 23:27:04 -08:00

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Swift

// This source file is part of the Swift.org open source project
// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
// Licensed under Apache License v2.0 with Runtime Library Exception
//
// See https://swift.org/LICENSE.txt for license information
// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
// RUN: not %target-swift-frontend %s -emit-ir
class a:P{class a{}{}func a:a{}func a{}}@objc protocol P{{}func a