Do not copy stack after stack overflow, fixes #8435
Do not copy stack after stack overflow, fixes #8435

Signed-off-by: Edward Z. Yang <dbd597f5635f432486c5d365e9bb585b3eaa1853@mit.edu>

snoyberg/ghc,ezyang/ghc,urbanslug/ghc,fmthoma/ghc,gcampax/ghc,da-x/ghc,ghc-android/ghc,mcschroeder/ghc,urbanslug/ghc,frantisekfarka/ghc-dsi,elieux/ghc,ghc-android/ghc,lukexi/ghc-7.8-arm64,fmthoma/ghc,oldmanmike/ghc,frantisekfarka/ghc-dsi,ryantm/ghc,ezyang/ghc,fmthoma/ghc,AlexanderPankiv/ghc,elieux/ghc,TomMD/ghc,oldmanmike/ghc,TomMD/ghc,GaloisInc/halvm-ghc,AlexanderPankiv/ghc,tjakway/ghcjvm,vTurbine/ghc,acowley/ghc,sdiehl/ghc,siddhanathan/ghc,mcschroeder/ghc,tjakway/ghcjvm,mcschroeder/ghc,shlevy/ghc,GaloisInc/halvm-ghc,nathyong/microghc-ghc,gridaphobe/ghc,holzensp/ghc,nkaretnikov/ghc,mfine/ghc,frantisekfarka/ghc-dsi,ezyang/ghc,ezyang/ghc,vikraman/ghc,mettekou/ghc,mettekou/ghc,hferreiro/replay,TomMD/ghc,snoyberg/ghc,fmthoma/ghc,acowley/ghc,ezyang/ghc,mfine/ghc,nushio3/ghc,ml9951/ghc,wxwxwwxxx/ghc,gridaphobe/ghc,snoyberg/ghc,vikraman/ghc,gridaphobe/ghc,forked-upstream-packages-for-ghcjs/ghc,urbanslug/ghc,hferreiro/replay,nkaretnikov/ghc,gcampax/ghc,siddhanathan/ghc,anton-dessiatov/ghc,nkaretnikov/ghc,GaloisInc/halvm-ghc,green-haskell/ghc,nathyong/microghc-ghc,TomMD/ghc,olsner/ghc,sdiehl/ghc,nkaretnikov/ghc,acowley/ghc,acowley/ghc,vikraman/ghc,ryantm/ghc,GaloisInc/halvm-ghc,gridaphobe/ghc,sgillespie/ghc,ml9951/ghc,TomMD/ghc,holzensp/ghc,jstolarek/ghc,vikraman/ghc,anton-dessiatov/ghc,nushio3/ghc,da-x/ghc,tibbe/ghc,spacekitteh/smcghc,hferreiro/replay,sdiehl/ghc,gridaphobe/ghc,olsner/ghc,elieux/ghc,lukexi/ghc-7.8-arm64,urbanslug/ghc,nushio3/ghc,sgillespie/ghc,ezyang/ghc,olsner/ghc,fmthoma/ghc,GaloisInc/halvm-ghc,elieux/ghc,tjakway/ghcjvm,shlevy/ghc,sdiehl/ghc,lukexi/ghc-7.8-arm64,gridaphobe/ghc,lukexi/ghc,jstolarek/ghc,nkaretnikov/ghc,oldmanmike/ghc,olsner/ghc,holzensp/ghc,mettekou/ghc,gcampax/ghc,mfine/ghc,hferreiro/replay,bitemyapp/ghc,vTurbine/ghc,AlexanderPankiv/ghc,lukexi/ghc,spacekitteh/smcghc,elieux/ghc,forked-upstream-packages-for-ghcjs/ghc,tjakway/ghcjvm,nathyong/microghc-ghc,vTurbine/ghc,hferreiro/replay,mfine/ghc,anton-dessiatov/ghc,bitemyapp/ghc,hferreiro/replay,ml9951/ghc,sdiehl/ghc,nathyong/microghc-ghc,mcschroeder/ghc,TomMD/ghc,mfine/ghc,ghc-android/ghc,mcschroeder/ghc,lukexi/ghc,green-haskell/ghc,anton-dessiatov/ghc,GaloisInc/halvm-ghc,vTurbine/ghc,frantisekfarka/ghc-dsi,mfine/ghc,spacekitteh/smcghc,snoyberg/ghc,shlevy/ghc,olsner/ghc,mettekou/ghc,tibbe/ghc,wxwxwwxxx/ghc,lukexi/ghc-7.8-arm64,AlexanderPankiv/ghc,ghc-android/ghc,christiaanb/ghc,sgillespie/ghc,oldmanmike/ghc,gcampax/ghc,siddhanathan/ghc,oldmanmike/ghc,shlevy/ghc,nushio3/ghc,forked-upstream-packages-for-ghcjs/ghc,christiaanb/ghc,da-x/ghc,snoyberg/ghc,ghc-android/ghc,ml9951/ghc,forked-upstream-packages-for-ghcjs/ghc,nushio3/ghc,sgillespie/ghc,christiaanb/ghc,shlevy/ghc,ryantm/ghc,gcampax/ghc,nkaretnikov/ghc,spacekitteh/smcghc,green-haskell/ghc,oldmanmike/ghc,tjakway/ghcjvm,acowley/ghc,tjakway/ghcjvm,forked-upstream-packages-for-ghcjs/ghc,vikraman/ghc,jstolarek/ghc,da-x/ghc,nathyong/microghc-ghc,wxwxwwxxx/ghc,mettekou/ghc,ryantm/ghc,tibbe/ghc,christiaanb/ghc,vikraman/ghc,bitemyapp/ghc,AlexanderPankiv/ghc,bitemyapp/ghc,tjakway/ghcjvm,mcschroeder/ghc,jstolarek/ghc,vTurbine/ghc,nathyong/microghc-ghc,green-haskell/ghc,wxwxwwxxx/ghc,elieux/ghc,wxwxwwxxx/ghc,lukexi/ghc,AlexanderPankiv/ghc,acowley/ghc,ml9951/ghc,da-x/ghc,olsner/ghc,urbanslug/ghc,bitemyapp/ghc,ezyang/ghc,ghc-android/ghc,forked-upstream-packages-for-ghcjs/ghc,spacekitteh/smcghc,forked-upstream-packages-for-ghcjs/ghc,sdiehl/ghc,urbanslug/ghc,urbanslug/ghc,mettekou/ghc,fmthoma/ghc,mfine/ghc,da-x/ghc,siddhanathan/ghc,TomMD/ghc,da-x/ghc,siddhanathan/ghc,vikraman/ghc,AlexanderPankiv/ghc,mcschroeder/ghc,acowley/ghc,snoyberg/ghc,sgillespie/ghc,lukexi/ghc-7.8-arm64,gcampax/ghc,sdiehl/ghc,ghc-android/ghc,sgillespie/ghc,elieux/ghc,green-haskell/ghc,christiaanb/ghc,christiaanb/ghc,shlevy/ghc,gcampax/ghc,siddhanathan/ghc,wxwxwwxxx/ghc,christiaanb/ghc,tibbe/ghc,ryantm/ghc,shlevy/ghc,nathyong/microghc-ghc,siddhanathan/ghc,jstolarek/ghc,ml9951/ghc,nushio3/ghc,fmthoma/ghc,ml9951/ghc,nkaretnikov/ghc,anton-dessiatov/ghc,olsner/ghc,vTurbine/ghc,sgillespie/ghc,hferreiro/replay,mettekou/ghc,anton-dessiatov/ghc,vTurbine/ghc,snoyberg/ghc,anton-dessiatov/ghc,wxwxwwxxx/ghc,lukexi/ghc,gridaphobe/ghc,GaloisInc/halvm-ghc,ml9951/ghc,holzensp/ghc,frantisekfarka/ghc-dsi,oldmanmike/ghc,tibbe/ghc,nushio3/ghc,holzensp/ghc