How to use `trace` while debuging GHC

[Richard Eisenberg]

I've recently used the conveniently-typed (pprTrace :: String -> SDoc -> a -> a) for this purpose. You have to compile with -DDEBUG, but it works great.

Richard

On Nov 11, 2012, at 8:36 PM, Ian Lynagh <ian at well-typed.com> wrote:

> On Sun, Nov 11, 2012 at 05:24:06PM -0800, Iavor Diatchki wrote:
>> 
>> There used to be a value called `tracingDynFlags` that I could use to dump
>> values, but it has disappeared...  Did it get moved somewhere, or is there
>> a better way to get the same effect?
> 
> There is now StaticFlags.unsafeGlobalDynFlags.
> 
> 
> Thanks
> Ian
> 
> 
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