Open Radar

 
Summary:
Xcode autocompletes Swift frontend crashers, which is pretty convenient if you’re trying to set some kind of record for number of crashes filed against a single compiler version in a single evening.

I’m not, for what it’s worth. But some men are born to crashes, some achieve crashes, and some have crashes thrust upon them.

Steps to Reproduce:
1. This code:
struct S: StringLiteralConvertible {
	init(stringLiteral value: Self.StringLiteralType) {
		<#code#>
	}
}

Expected Results:
shouldn’t crash the swift frontend

Actual Results:
but totally does:
rob@Resonance ~/Desktop> swiftc -v boom.swift
Apple Swift version 2.0 (swiftlang-700.0.45 clang-700.0.57.2)
Target: x86_64-apple-darwin14.4.0
/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/swift -frontend -c -primary-file boom.swift -target x86_64-apple-darwin14.4.0 -enable-objc-interop -color-diagnostics -module-name boom -o /var/folders/9y/f7n4rvx901nctm_5d16c1wm40000gn/T/boom-d6e355.o
boom.swift:3:3: error: editor placeholder in source file
                <#code#>
                ^
boom.swift:2:28: error: 'Self' is only available in a protocol or as the result of a method in a class; did you mean 'S'?
        init(stringLiteral value: Self.StringLiteralType) {
                                  ^~~~
                                  S
<unknown>:0: error: unable to execute command: Segmentation fault: 11
<unknown>:0: error: swift frontend command failed due to signal (use -v to see invocation)


Regression:
It doesn’t crash if the type is not StringLiteralConvertible.

Notes:
This is one of the autocompletions Xcode provides for “init” when in a type declared to be StringLiteralConvertible which does not yet implement the requirements. Xcode autocompletes crash repros! Neat.