#14170: 8.2.1 regression: GHC fails to simplify `natVal` -------------------------------------+------------------------------------- Reporter: vagarenko | Owner: (none) Type: bug | Status: new Priority: high | Milestone: 8.2.3 Component: Compiler | Version: 8.2.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: | Unknown/Multiple Type of failure: None/Unknown | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by Bodigrim): I am interested in this issue due to #14465. I tried to prepare a patch Phab:D4212, but stumbled upon a build issue. Can someone please explain what went wrong? Sorry, I am new to GHC build system. {{{ "inplace/bin/ghc-stage1" -hisuf hi -osuf o -hcsuf hc -static -O0 -H64m -Wall -this-unit-id base-4.11.0.0 -hide-all-packages -i -ilibraries/base/. -ilibraries/base/dist-install/build -Ilibraries/base /dist-install/build -ilibraries/base/dist-install/build/./autogen -Ilibraries/base/dist-install/build/./autogen -Ilibraries/base/include -optP-DOPTIMISE_INTEGER_GCD_LCM -optP-include -optPlibraries/base/dist- install/build/./autogen/cabal_macros.h -package-id rts -package-id ghc- prim-0.5.2.0 -package-id integer-gmp-1.0.1.0 -this-unit-id base -XHaskell2010 -O -no-user-package-db -rtsopts -Wno-trustworthy-safe -Wno-deprecated-flags -Wnoncanonical-monad-instances -odir libraries/base/dist-install/build -hidir libraries/base/dist-install/build -stubdir libraries/base/dist-install/build -dynamic-too -c libraries/base/./GHC/Natural.hs -o libraries/base/dist- install/build/GHC/Natural.o -dyno libraries/base/dist- install/build/GHC/Natural.dyn_o <interactive>:1:1: error: Bad interface file: libraries/base/dist-install/build/GHC/Natural.hi libraries/base/dist-install/build/GHC/Natural.hi: openBinaryFile: does not exist (No such file or directory) }}} -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14170#comment:6 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler