#12425: With -O1 and above causes ghc to use all available memory before being killed by OOM killer -------------------------------------+------------------------------------- Reporter: erikd | Owner: Type: bug | Status: new Priority: normal | Milestone: 8.0.2 Component: Compiler | Version: 8.0.1 Keywords: | Operating System: Unknown/Multiple Architecture: | Type of failure: Other Unknown/Multiple | Test Case: | Blocked By: Blocking: | Related Tickets: Differential Rev(s): | Wiki Page: -------------------------------------+------------------------------------- I've just taken over an existing haskell package and in the process of getting it to work with ghc 8.0 discovered that when compiling one file ghc tires to use all my ram. It basically ends up using 40% of 16 Gig before being killed by the OOM (out-of-memory) killer. The project is at: https://github.com/erikd/conduit-find.git The problem can be reproduced by: {{{ git clone https://github.com/erikd/conduit-find.git cd conduit-find git checkout test/ghc-8.0 cabal sandbox init cabal install --dependencies-only cabal build }}} which on two of my machines fails building the `Data.Cond` module. This is regression, because this code compiles fine with ghc-7.10.3 and ghc-7.8.4. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/12425 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler