#12210: allocateExec: can't handle large objects -------------------------------------+------------------------------------- Reporter: thomie | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: Runtime | Version: 8.0.1 System (Linker) | Keywords: | Operating System: Windows Architecture: | Type of failure: None/Unknown Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- `ghci T11535.hs` fails on Windows with: {{{ GHCi, version 8.0.0.20160421: http://www.haskell.org/ghc/ :? for help [1 of 1] Compiling Main ( T11535.hs, interpreted ) ghc.exe: internal error: allocateExec: can't handle large objects (GHC version 8.0.0.20160421 for x86_64_unknown_mingw32) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information. }}} See also this comment in `rts/sm/Storage.c`: {{{ /* ---------------------------------------------------------------------------- Executable memory Executable memory must be managed separately from non-executable memory. Most OSs these days require you to jump through hoops to dynamically allocate executable memory, due to various security measures. Here we provide a small memory allocator for executable memory. Memory is managed with a page granularity; we allocate linearly in the page, and when the page is emptied (all objects on the page are free) we free the page again, not forgetting to make it non-executable. TODO: The inability to handle objects bigger than BLOCK_SIZE_W means that the linker cannot use allocateExec for loading object code files on Windows. Once allocateExec can handle larger objects, the linker should be modified to use allocateExec instead of VirtualAlloc. ------------------------------------------------------------------------- */ }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12210 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler