How do I tell? Does this mean that if the exception is occurring in a haskell library I can't get to it? I am trying to run down a Prelude.read: No Parse error and I need to see the value that it is failing to parse on.
Thanks. Steve On Tue, Aug 31, 2010 at 11:05 AM, Pepe Iborra <pepeibo...@gmail.com> wrote: > Hi Steve > > The debugger only traces calls in interpreted code. Perhaps the call > to myMethod is being made from object code? > > Admittedly, the ghci debugger can take some effort to learn to use > properly. Make sure that you give a look to the ghc user guide if you > haven't done so yet. > > > Best, > pepe > > On Tuesday, August 31, 2010, Steve <sseve...@gmail.com> wrote: >> I am trying to debug a problem in GHCI. I invoke my method with trace >> but when it breaks on exception i can't get this history. Output is >> below. Thanks. >> >> >> relude Symbols> :set -fbreak-on-exception >> Prelude Symbols> :trace myMethod >> Loading package HUnit-1.2.2.1 ... linking ... done. >> Loading package syb-0.1.0.2 ... linking ... done. >> Loading package base-3.0.3.2 ... linking ... done. >> Loading package old-locale-1.0.0.2 ... linking ... done. >> Loading package time-1.1.4 ... linking ... done. >> Loading package random-1.0.0.2 ... linking ... done. >> Loading package QuickCheck-1.2.0.0 ... linking ... done. >> Loading package Decimal-0.1.0 ... linking ... done. >> Loading package array-0.3.0.0 ... linking ... done. >> Loading package Diff-0.1.2 ... linking ... done. >> Loading package bytestring-0.9.1.5 ... linking ... done. >> Loading package containers-0.3.0.0 ... linking ... done. >> Loading package mtl-1.1.0.2 ... linking ... done. >> Loading package old-time-1.0.0.3 ... linking ... done. >> Loading package convertible-1.0.9 ... linking ... done. >> Loading package utf8-string-0.3.4 ... linking ... done. >> Loading package HDBC-2.2.6 ... linking ... done. >> Loading package HDBC-mysql-0.6.3 ... linking ... done. >> Loading package parsec-2.1.0.1 ... linking ... done. >> Loading package network-2.2.1.7 ... linking ... done. >> Loading package HTTP-4000.0.9 ... linking ... done. >> Loading package binary-0.5.0.2 ... linking ... done. >> Loading package digest-0.0.0.8 ... linking ... done. >> Loading package filepath-1.1.0.3 ... linking ... done. >> Loading package unix-2.4.0.0 ... linking ... done. >> Loading package directory-1.0.1.0 ... linking ... done. >> Loading package pretty-1.0.1.1 ... linking ... done. >> Loading package zlib-0.5.2.0 ... linking ... done. >> Loading package zip-archive-0.1.1.6 ... linking ... done. >> Loading package Core-0.0.1 ... linking ... done. >> Beginning Update >> Stopped at <exception thrown> >> _exception :: >> e = GHC.Exception.SomeException (GHC.Exception.D:Exception _ >> >> (GHC.Show.D:Show ...) ....) >> (GHC.IO.Exception.IOError Nothing >> GHC.IO.Exception.UserError ....) >> [<exception thrown>] Prelude Symbols> :history >> Empty history. Perhaps you forgot to use :trace? >> _______________________________________________ >> Haskell-Cafe mailing list >> Haskell-Cafe@haskell.org >> http://www.haskell.org/mailman/listinfo/haskell-cafe >> > > -- > -- José Iborra http://www.dsic.upv.es/~jiborra > -- UPV Valencia Telf. (+34) 96 387 00 00 (ext) 83529 > -- Camino de Vera s/n. 46022 Valencia (Spain) > -- ------------------------------------ Steve Severance c. 240.472.9645 e. st...@medwizard.net ------------------------------------ _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
