Swift: Calling nested generic functions from nested sibling functions crashes the compiler

Originator:rix.rob
Number:rdar://19097334 Date Originated:30-Nov-2014 03:06 PM
Status:Open Resolved:
Product:Developer Tools Product Version:Xcode 6.1.1 (6A2006)
Classification:Crash/Hang/Data Loss Reproducible:Always
 
Summary:
A generic function nested within an outer function called from a sibling function crashes.

This seemed really familiar, but it isn’t in the release notes for Xcode 6.2 and I don’t have the ones for 6.1.1 handy. (It crashes with Xcode 6.2’s swift anyway.)


Steps to Reproduce:
1. Compile this code:
func f() {
	func g<T>(h: T -> ()) -> () {
		return ()
	}
	func i() {
		g { (x: Int) in () }
	}
}


Expected Results:
Not crash.


Actual Results:
Crash.


Regression:
Moving g() up out of f() resolves the crash.
Seems to depend on g being generic.


Notes:
Crash log attached.

Comments


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