#8755: Happy parser file compilation causes panic ---------------------------------------+---------------------------------- Reporter: wting | Owner: Type: bug | Status: closed Priority: normal | Milestone: Component: Compiler | Version: 7.6.3 Resolution: duplicate | Keywords: Operating System: Unknown/Multiple | Architecture: x86_64 (amd64) Type of failure: Compile-time crash | Difficulty: Unknown Test Case: | Blocked By: Blocking: | Related Tickets: ---------------------------------------+---------------------------------- Changes (by goldfire): * status: new => closed * resolution: => duplicate Comment: This seems to be fixed in 7.8: {{{ 23:18:03 ~/temp/bug> ghc --version The Glorious Glasgow Haskell Compilation System, version 7.8.20140130 23:18:06 ~/temp/bug> ghc DeclareParse.hs [1 of 4] Compiling Base ( Base.hs, Base.o ) [2 of 4] Compiling Lexer ( Lexer.hs, Lexer.o ) [3 of 4] Compiling Declare ( Declare.hs, Declare.o ) [4 of 4] Compiling DeclareParse ( DeclareParse.hs, DeclareParse.o ) DeclareParse.hs:177:11: Not in scope: data constructor ‛Subtract’ DeclareParse.hs:193:11: Not in scope: data constructor ‛Multiply’ DeclareParse.hs:202:11: Not in scope: data constructor ‛Divide’ }}} For the record, I was able to produce this with 7.6.3. Thanks for reporting! -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/8755#comment:2 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler