Don't try to bind incompatible type variables together.
Don't try to bind incompatible type variables together.

Doing so causes the solver to loop infinitely. Fixes <rdar://problem/15536725>.


Swift SVN r11198

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