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  • Glasgow Haskell CompilerGlasgow Haskell Compiler
  • GHCGHC
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  • #2191
Closed
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Issue created Apr 02, 2008 by Samuel Bronson@SamB

A way to programmatically cause GHC to report the cost center stack associated with a value

I find that I often wish I could ask GHC to tell me "where did *that* value come from?" as I debug JHC. Since GHC obviously can track this information, it seems like it would be fairly simple to implement a way for it to report this information as instructed by a running program. Perhaps:

reportCssFor :: a -> b -> b

I wouldn't really have any desire to use this on thunks, since when I want to do this it is usually because I don't like the value (i.e. it isn't in the right normal form), and to know this I must already have evaluated it.

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Version 6.8.2
Type FeatureRequest
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Profiling
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