#8974: 64 bit windows executable built with ghc-7.9.20140405+LLVM segfaults ------------------------------------+-------------------------------------- Reporter: awson | Owner: Type: bug | Status: new Priority: high | Milestone: 8.0.1 Component: Compiler (LLVM) | Version: 7.9 Resolution: | Keywords: Operating System: Windows | Architecture: x86_64 (amd64) Type of failure: Runtime crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | ------------------------------------+-------------------------------------- Comment (by awson): Since I have now quite a bit of spare time, I've decided to look into this. Indeed, binutils `ld` is wrong here. I've created [https://sourceware.org/bugzilla/show_bug.cgi?id=17955#c1 the patch to binutils] which fixes things for me. OTOH, mention should be made that R_X86_64_PC64 reloc is '''not supported''' by MS in PE-COFF and neither MS `link` nor LLVM `lld` can handle it (the former simply ignores it and the latter complains about unsupported relocation type). Thus the proper way to fix it is to use a workaround similar to that used in NCG (see my comment above) to make LLVM generate R_X86_64_PC32 relocs instead. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8974#comment:40 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler