SIL.rst: Call things out as UB instead of being vague.
SIL.rst: Call things out as UB instead of being vague.

Swift SVN r6571

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