The debugger only instruments interpreted code, so evaluations
occurring inside library code do not show up in :trace. This is not a
terrible problem in practice, since usually seeing the evaluations
occurring in your code is what you need to debug the problem.
But since :trace is not showing you
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
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
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
