instance Show (a->b) (was Re: GHC-4.00 assembler crash)
Hello! On Tue, Oct 20, 1998 at 12:36:44AM -0700, Sigbjorn Finne (Intl Vendor) wrote: > [...] > To quote from somewhere deep within the Prelude: > instance Show (a -> b) where > showsPrec _ _ = showString "<>" > [meta-comment: could we just do away with this one? Beyond giving > rise to semi-entertaining bugs, it's of precious little practical use..] I think, it IS of practical use for hugs users, as it prints <> as a response of a function valued expression instead of an error message that it can't find an instance of Show for the type of the entered expression. > Thanks for the report; fixed (one line patch attached.) > --Sigbjorn > begin 600 MachRegs.diff Why not in clear text? :-) > [... uuencode deleted ...] Regards, Felix. PS: The Message-Id in your mail is a bit strange. Usually, it should be <[EMAIL PROTECTED]>.
RE: instance Show (a->b) (was Re: GHC-4.00 assembler crash)
Felix Schroeter <[EMAIL PROTECTED]> writes: > > > > To quote from somewhere deep within the Prelude: > > > instance Show (a -> b) where > > showsPrec _ _ = showString "<>" > > > [meta-comment: could we just do away with this one? Beyond giving > > rise to semi-entertaining bugs, it's of precious little > practical use..] > > I think, it IS of practical use for hugs users, as it prints > <> as a response of a function valued expression instead > of an error message that it can't find an instance of Show for the > type of the entered expression. > That's a Hugs user interface issue, and can be solved without polluting the Haskell Prelude, i.e., no need to burden the rest of us with it ;-) > > > begin 600 MachRegs.diff > > Why not in clear text? :-) > because Outlook scares me no end :-) > > [... uuencode deleted ...] > > Regards, Felix. > > PS: The Message-Id in your mail is a bit strange. Usually, it should > be <[EMAIL PROTECTED]>. > Maybe so, but it's within the bounds of what constitutes a legal addr-spec as per RFC 822. --Sigbjorn
RE: GHC-4.00 assembler crash
> Jan Laitenberger [mailto:[EMAIL PROTECTED]] writes: > > > Hi, > > > Compiling our interpreter module causes the assembler to crash > > ghc -c -H45M Inter.hs > > returns: > > /usr/ccs/bin/as: "/tmp/ghc22153.s", line 572: error: > statement syntax > /usr/ccs/bin/as: "/tmp/ghc22153.s", line 572: error: > statement syntax > /usr/ccs/bin/as: "/tmp/ghc22153.s", line 590: error: > statement syntax > /usr/ccs/bin/as: "/tmp/ghc22153.s", line 590: error: > statement syntax > > > These lines look like: (I used -S to get the assembler file) > > .word 0r<> > > > Is this a valid assembler syntax?? If I delete "r<>" > the assembler accepts the program. But is it still correct then? > To quote from somewhere deep within the Prelude: instance Show (a -> b) where showsPrec _ _ = showString "<>" [meta-comment: could we just do away with this one? Beyond giving rise to semi-entertaining bugs, it's of precious little practical use..] Thanks for the report; fixed (one line patch attached.) --Sigbjorn begin 600 MachRegs.diff M*BHJ(&-O;7!I;&5R+VYA=&EV94=E;B]-86-H4F5GRUP
