We have fixed this though, GHC 8.4 shouldn’t have this problem specifically. The issue is that hitman pro is injecting itself into every process by throwing a signal, Prior to 8.4 we were pretty aggressive in how we treated first chance exceptions. We’ve now relaxed this. That said I find the behavior of HitmanPro to be quite intrusive and I wouldn’t trust anything injecting code Into my address space. Fyi, this is what it caused: ExceptionAddress: 00007ffcc2b368ce (ntdll!RtlVirtualUnwind+0x000000000000001e) ExceptionCode: c0000005 (Access violation) ExceptionFlags: 00000000 NumberParameters: 2 Parameter[0]: 0000000000000000 Parameter[1]: 00000000046710f6 Attempt to read from address 00000000046710f6 0:000> lmvm hmpalert Browse full module list start end module name 00007ffc`ba4b0000 00007ffc`ba595000 hmpalert (export symbols) hmpalert.dll Loaded symbol image file: hmpalert.dll Image path: C:\Windows\System32\hmpalert.dll Image name: hmpalert.dll Browse all global symbols functions data Timestamp: Mon Jul 17 15:53:17 2017 (596CCF5D) CheckSum: 000F490C ImageSize: 000E5000 File version: 3.6.8.604 Product version: 3.6.8.604 File flags: 0 (Mask 3F) File OS: 40004 NT Win32 File type: 2.0 Dll File date: 00000000.00000000 Translations: 0400.04b0 CompanyName: SurfRight B.V. ProductName: HitmanPro.Alert InternalName: hmpalert.dll OriginalFilename: hmpalert_x64.dll ProductVersion: 3.6.8.604 FileVersion: 3.6.8.604 FileDescription: HitmanPro.Alert 64-bit Support Library LegalCopyright: © 2013-2017 SurfRight, a Sophos company Comments: Incorporates Threatstar Exploit Mitigation Platform (EMP) From: Gershom B Sent: Thursday, December 28, 2017 22:24 To: ghc-devs@haskell.org Devs Subject: RE: Haskell Platform 8.2.2 - virus? Note that HitmanPro has caused plenty of problems with GHC in the past, and should be avoided by Haskell devs: https://www.reddit.com/r/haskell/comments/77from/gettting_segmentation_fault... https://github.com/commercialhaskell/intero/issues/436 _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs