#7240: Stack trace truncated too much with indirect recursion
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Reporter: nomeata | Owner: nomeata
Type: bug | Status: new
Priority: normal | Component: Profiling
Version: 7.4.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by nomeata):
Hmm, I’d prefer to update the bug description, but it seems that I do not
have the rights for that. Anyways, here is a simpler and cleaner
description of the problem. Consider this code:
{{{
module Main where
import GHC.Stack
f () = currentCallStack >>= putStrLn . renderStack
main = boringCombinator (interestingFunction f) ()
interestingFunction f x = boringCombinator f x
boringCombinator f x = f x
}}}
Currently, it prints:
{{{
Stack trace:
Main.f (callstack005.hs:4:8-50)
Main.boringCombinator (callstack005.hs:7:24-26)
Main.main (callstack005.hs:5:8-50)
Main.CAF (<entire-module>)
}}}
when I, as a developer, would expect this output:
{{{
Stack trace:
Main.f (callstack005.hs:4:8-50)
Main.boringCombinator (callstack005.hs:7:24-26)
Main.interestingFunction (callstack005.hs:6:27-46)
Main.main (callstack005.hs:5:26-46)
Main.boringCombinator (callstack005.hs:7:24-26)
Main.main (callstack005.hs:5:8-50)
Main.CAF (<entire-module>)
}}}
This output is obtained by either not truncating at all, or only
truncating repeating segments of the callstack.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/7240#comment:3>
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