[SR-10069] Local functions cannot be overloaded

[swift-ci]

Previous ID	SR-10069
Radar	rdar://problem/29312676
Original Reporter	Jessy (JIRA User)
Type	Bug
Status	Resolved
Resolution	Done

Attachment: Download

Environment

Xcode 10.2 beta 2

Additional Detail from JIRA

Votes	0
Component/s	Compiler
Labels	Bug
Assignee	None
Priority	Medium

md5: a3e401e1593c9e4c9bddb38188f91607

is duplicated by:

• SR-13306 Incorrect shadowing behavior for local functions and outer function parameters

Issue Description:

These don't compile:

1. Nested overloads with different parameter types.

2. Calling a nested function before an overload is defined later in the function.

[belkadan]

func ƒ() {
func nested(_: Bool) { }
func nested(_: Int) { }
}

func ƒ2() {
func nested(bool _: Bool) { }

nested(bool: false)

func nested(int _: Int) { }
}

[belkadan]

I'm not sure if there was an explicit discussion against allowing nested overloads by type. The second example certainly seems like a bug to me, though.

cc @DougGregor, @xedin, davidungar (JIRA User)

[swift-ci]

Comment by David Ungar (JIRA)

Thanks, @belkadan for the heads-up. Thanks Jessy (JIRA User).

[slavapestov]

#34246