#15168: GHC HEAD crashes on Windows 64 after the SRT overhaul (May 16, 2018 and newer) -------------------------------------+------------------------------------- Reporter: awson | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.6.1 Component: Compiler | Version: 8.5 Keywords: | Operating System: Windows Architecture: x86_64 | Type of failure: Compile-time (amd64) | crash or panic Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- After the series of SRT overhaul patches GHC doesn't work on Windows 64-bit. GHC executable crashes (AV) on any attempt to compile anything or even to start in interactive mode. When crashed it report crash address which may look not as a real address at all (e.g. 0x800 or 0xffffffffffffffff) and may report either reading from or executing such an address. OTOH, when started with, e.g. `+RTS -A256m -RTS` it is able to compile some programs (`haddock` at least). Reverting all related commits down to eb8e692cab7970c495681e14721d05ecadd21581 make things work again. I have no proof that things went bad exactly at eb8e692cab7970c495681e14721d05ecadd21581. Perhaps, this happened later on, but I have a proof that things were good immediately before. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/15168 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler