Add regression test from rdar://problem/20891471.
Add regression test from rdar://problem/20891471.

Swift SVN r29214

danielmartin/swift,karwa/swift,xwu/swift,tardieu/swift,austinzheng/swift,jopamer/swift,jmgc/swift,cbrentharris/swift,brentdax/swift,xwu/swift,lorentey/swift,OscarSwanros/swift,deyton/swift,benlangmuir/swift,djwbrown/swift,ken0nek/swift,Jnosh/swift,ken0nek/swift,atrick/swift,sschiau/swift,therealbnut/swift,ahoppen/swift,devincoughlin/swift,karwa/swift,hughbe/swift,uasys/swift,calebd/swift,mightydeveloper/swift,kperryua/swift,cbrentharris/swift,adrfer/swift,parkera/swift,tardieu/swift,frootloops/swift,manavgabhawala/swift,lorentey/swift,Jnosh/swift,shahmishal/swift,milseman/swift,lorentey/swift,modocache/swift,devincoughlin/swift,slavapestov/swift,gribozavr/swift,gregomni/swift,airspeedswift/swift,Ivacker/swift,return/swift,huonw/swift,gribozavr/swift,jtbandes/swift,ken0nek/swift,djwbrown/swift,MukeshKumarS/Swift,khizkhiz/swift,rudkx/swift,emilstahl/swift,rudkx/swift,manavgabhawala/swift,johnno1962d/swift,alblue/swift,ahoppen/swift,modocache/swift,ben-ng/swift,rudkx/swift,slavapestov/swift,brentdax/swift,felix91gr/swift,jmgc/swift,tkremenek/swift,gottesmm/swift,shajrawi/swift,practicalswift/swift,Jnosh/swift,KrishMunot/swift,LeoShimonaka/swift,gmilos/swift,gmilos/swift,cbrentharris/swift,tardieu/swift,frootloops/swift,IngmarStein/swift,Jnosh/swift,cbrentharris/swift,karwa/swift,apple/swift,CodaFi/swift,allevato/swift,practicalswift/swift,natecook1000/swift,emilstahl/swift,johnno1962d/swift,mightydeveloper/swift,JGiola/swift,alblue/swift,Jnosh/swift,tardieu/swift,devincoughlin/swift,tinysun212/swift-windows,felix91gr/swift,codestergit/swift,gregomni/swift,felix91gr/swift,tinysun212/swift-windows,slavapestov/swift,shajrawi/swift,jmgc/swift,codestergit/swift,glessard/swift,tardieu/swift,cbrentharris/swift,deyton/swift,kstaring/swift,dduan/swift,manavgabhawala/swift,gottesmm/swift,manavgabhawala/swift,rudkx/swift,arvedviehweger/swift,xwu/swift,ben-ng/swift,ken0nek/swift,parkera/swift,djwbrown/swift,uasys/swift,brentdax/swift,gmilos/swift,tinysun212/swift-windows,swiftix/swift,shajrawi/swift,shajrawi/swift,harlanhaskins/swift,amraboelela/swift,IngmarStein/swift,hooman/swift,JGiola/swift,emilstahl/swift,austinzheng/swift,therealbnut/swift,aschwaighofer/swift,arvedviehweger/swift,jckarter/swift,jopamer/swift,benlangmuir/swift,kentya6/swift,kusl/swift,milseman/swift,LeoShimonaka/swift,parkera/swift,apple/swift,emilstahl/swift,jopamer/swift,gribozavr/swift,roambotics/swift,felix91gr/swift,dduan/swift,huonw/swift,roambotics/swift,johnno1962d/swift,tjw/swift,shahmishal/swift,nathawes/swift,ben-ng/swift,tardieu/swift,calebd/swift,SwiftAndroid/swift,sschiau/swift,amraboelela/swift,kentya6/swift,swiftix/swift,kperryua/swift,xedin/swift,roambotics/swift,apple/swift,tjw/swift,jckarter/swift,JaSpa/swift,codestergit/swift,modocache/swift,gmilos/swift,apple/swift,sdulal/swift,MukeshKumarS/Swift,kentya6/swift,jmgc/swift,swiftix/swift,OscarSwanros/swift,CodaFi/swift,deyton/swift,tinysun212/swift-windows,gribozavr/swift,codestergit/swift,arvedviehweger/swift,huonw/swift,danielmartin/swift,nathawes/swift,hughbe/swift,CodaFi/swift,johnno1962d/swift,huonw/swift,ken0nek/swift,xwu/swift,kusl/swift,return/swift,atrick/swift,codestergit/swift,return/swift,xwu/swift,danielmartin/swift,sdulal/swift,jmgc/swift,jckarter/swift,devincoughlin/swift,gribozavr/swift,CodaFi/swift,gottesmm/swift,sdulal/swift,JaSpa/swift,allevato/swift,KrishMunot/swift,bitjammer/swift,jckarter/swift,kstaring/swift,MukeshKumarS/Swift,karwa/swift,uasys/swift,amraboelela/swift,xedin/swift,xwu/swift,mightydeveloper/swift,swiftix/swift.old,return/swift,therealbnut/swift,Ivacker/swift,jopamer/swift,hooman/swift,KrishMunot/swift,harlanhaskins/swift,emilstahl/swift,tkremenek/swift,bitjammer/swift,tjw/swift,IngmarStein/swift,mightydeveloper/swift,felix91gr/swift,gregomni/swift,kperryua/swift,return/swift,manavgabhawala/swift,mightydeveloper/swift,IngmarStein/swift,practicalswift/swift,natecook1000/swift,amraboelela/swift,alblue/swift,return/swift,danielmartin/swift,brentdax/swift,tinysun212/swift-windows,swiftix/swift.old,apple/swift,JaSpa/swift,tkremenek/swift,frootloops/swift,kusl/swift,hooman/swift,atrick/swift,lorentey/swift,Ivacker/swift,swiftix/swift.old,alblue/swift,jtbandes/swift,stephentyrone/swift,KrishMunot/swift,dduan/swift,sdulal/swift,devincoughlin/swift,frootloops/swift,sdulal/swift,rudkx/swift,jopamer/swift,swiftix/swift.old,kperryua/swift,dreamsxin/swift,djwbrown/swift,nathawes/swift,apple/swift,ahoppen/swift,OscarSwanros/swift,IngmarStein/swift,djwbrown/swift,kstaring/swift,gregomni/swift,adrfer/swift,harlanhaskins/swift,tinysun212/swift-windows,slavapestov/swift,mightydeveloper/swift,swiftix/swift,kusl/swift,kentya6/swift,hughbe/swift,frootloops/swift,amraboelela/swift,gottesmm/swift,gribozavr/swift,danielmartin/swift,ken0nek/swift,lorentey/swift,KrishMunot/swift,natecook1000/swift,Ivacker/swift,modocache/swift,shajrawi/swift,airspeedswift/swift,airspeedswift/swift,milseman/swift,adrfer/swift,shajrawi/swift,KrishMunot/swift,russbishop/swift,calebd/swift,austinzheng/swift,dduan/swift,stephentyrone/swift,parkera/swift,MukeshKumarS/Swift,practicalswift/swift,felix91gr/swift,OscarSwanros/swift,SwiftAndroid/swift,jckarter/swift,frootloops/swift,JGiola/swift,Ivacker/swift,practicalswift/swift,hughbe/swift,modocache/swift,shahmishal/swift,austinzheng/swift,gribozavr/swift,sschiau/swift,zisko/swift,tkremenek/swift,dduan/swift,russbishop/swift,gregomni/swift,OscarSwanros/swift,calebd/swift,nathawes/swift,uasys/swift,harlanhaskins/swift,stephentyrone/swift,mightydeveloper/swift,stephentyrone/swift,gregomni/swift,airspeedswift/swift,uasys/swift,ben-ng/swift,devincoughlin/swift,johnno1962d/swift,uasys/swift,alblue/swift,devincoughlin/swift,airspeedswift/swift,karwa/swift,slavapestov/swift,Ivacker/swift,harlanhaskins/swift,emilstahl/swift,MukeshKumarS/Swift,cbrentharris/swift,khizkhiz/swift,slavapestov/swift,tkremenek/swift,mightydeveloper/swift,bitjammer/swift,jckarter/swift,kentya6/swift,xwu/swift,austinzheng/swift,LeoShimonaka/swift,swiftix/swift.old,LeoShimonaka/swift,SwiftAndroid/swift,jmgc/swift,gmilos/swift,karwa/swift,kperryua/swift,kusl/swift,shajrawi/swift,hughbe/swift,zisko/swift,calebd/swift,austinzheng/swift,sschiau/swift,codestergit/swift,karwa/swift,adrfer/swift,jtbandes/swift,milseman/swift,aschwaighofer/swift,arvedviehweger/swift,allevato/swift,MukeshKumarS/Swift,karwa/swift,shahmishal/swift,Jnosh/swift,LeoShimonaka/swift,tinysun212/swift-windows,deyton/swift,cbrentharris/swift,ben-ng/swift,djwbrown/swift,danielmartin/swift,russbishop/swift,glessard/swift,austinzheng/swift,natecook1000/swift,jopamer/swift,practicalswift/swift,zisko/swift,huonw/swift,kusl/swift,johnno1962d/swift,adrfer/swift,amraboelela/swift,sschiau/swift,rudkx/swift,johnno1962d/swift,stephentyrone/swift,kstaring/swift,jopamer/swift,nathawes/swift,brentdax/swift,amraboelela/swift,kstaring/swift,therealbnut/swift,sdulal/swift,ahoppen/swift,JGiola/swift,tardieu/swift,atrick/swift,hooman/swift,russbishop/swift,bitjammer/swift,allevato/swift,emilstahl/swift,gmilos/swift,manavgabhawala/swift,djwbrown/swift,gmilos/swift,xedin/swift,benlangmuir/swift,zisko/swift,shahmishal/swift,bitjammer/swift,jtbandes/swift,SwiftAndroid/swift,shahmishal/swift,khizkhiz/swift,aschwaighofer/swift,adrfer/swift,stephentyrone/swift,calebd/swift,nathawes/swift,Ivacker/swift,emilstahl/swift,swiftix/swift,atrick/swift,kstaring/swift,allevato/swift,xedin/swift,harlanhaskins/swift,natecook1000/swift,glessard/swift,codestergit/swift,kperryua/swift,modocache/swift,ahoppen/swift,JaSpa/swift,zisko/swift,MukeshKumarS/Swift,deyton/swift,aschwaighofer/swift,CodaFi/swift,ken0nek/swift,lorentey/swift,swiftix/swift.old,kentya6/swift,JaSpa/swift,russbishop/swift,JGiola/swift,airspeedswift/swift,kperryua/swift,tjw/swift,modocache/swift,IngmarStein/swift,parkera/swift,xedin/swift,frootloops/swift,calebd/swift,devincoughlin/swift,zisko/swift,lorentey/swift,stephentyrone/swift,allevato/swift,tkremenek/swift,adrfer/swift,swiftix/swift.old,tjw/swift,gottesmm/swift,dduan/swift,cbrentharris/swift,return/swift,bitjammer/swift,danielmartin/swift,jtbandes/swift,harlanhaskins/swift,sdulal/swift,roambotics/swift,deyton/swift,kstaring/swift,bitjammer/swift,milseman/swift,xedin/swift,alblue/swift,hooman/swift,sdulal/swift,alblue/swift,JaSpa/swift,practicalswift/swift,SwiftAndroid/swift,shahmishal/swift,ben-ng/swift,xedin/swift,benlangmuir/swift,hooman/swift,LeoShimonaka/swift,aschwaighofer/swift,CodaFi/swift,parkera/swift,nathawes/swift,russbishop/swift,parkera/swift,felix91gr/swift,parkera/swift,swiftix/swift,tjw/swift,jtbandes/swift,allevato/swift,russbishop/swift,sschiau/swift,therealbnut/swift,huonw/swift,khizkhiz/swift,brentdax/swift,uasys/swift,shajrawi/swift,aschwaighofer/swift,KrishMunot/swift,OscarSwanros/swift,CodaFi/swift,JGiola/swift,kusl/swift,hughbe/swift,milseman/swift,khizkhiz/swift,therealbnut/swift,manavgabhawala/swift,Jnosh/swift,LeoShimonaka/swift,SwiftAndroid/swift,arvedviehweger/swift,roambotics/swift,therealbnut/swift,swiftix/swift.old,atrick/swift,benlangmuir/swift,natecook1000/swift,swiftix/swift,arvedviehweger/swift,khizkhiz/swift,kentya6/swift,gottesmm/swift,kentya6/swift,khizkhiz/swift,huonw/swift,natecook1000/swift,lorentey/swift,airspeedswift/swift,glessard/swift,arvedviehweger/swift,aschwaighofer/swift,deyton/swift,glessard/swift,gottesmm/swift,tjw/swift,dreamsxin/swift,practicalswift/swift,slavapestov/swift,SwiftAndroid/swift,milseman/swift,sschiau/swift,LeoShimonaka/swift,hughbe/swift,IngmarStein/swift,zisko/swift,Ivacker/swift,ahoppen/swift,ben-ng/swift,OscarSwanros/swift,benlangmuir/swift,kusl/swift,sschiau/swift,JaSpa/swift,roambotics/swift,tkremenek/swift,jtbandes/swift,dduan/swift,shahmishal/swift,brentdax/swift,gribozavr/swift,xedin/swift,jckarter/swift,hooman/swift,glessard/swift,jmgc/swift