#956: improving error messages #1
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Reporter: Bulat Ziganshin | Owner: simonpj
Type: feature request | Status: new
Priority: normal | Milestone: _|_
Component: Compiler | Version: 6.6
Keywords: | Os: Unknown/Multiple
Architecture: Unknown/Multiple | Failure: None/Unknown
Difficulty: Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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Comment(by morabbin):
Given that GHC 7's error messages are generally more informative, and in
these cases produce very friendly messages:
{{{
Couldn't match expected type `IO b0'
with actual type `Char -> IO ()'
In a stmt of a 'do' block: putChar
In the expression:
do { putChar 'a';
putChar }
In an equation for `main':
main
= do { putChar 'a';
putChar }
}}}
perhaps this ought to be closed as fixed. The message doesn't suggest a
probable cause or fix, but I think that's fine here.
--
Ticket URL: http://hackage.haskell.org/trac/ghc/ticket/956#comment:7
GHC http://www.haskell.org/ghc/
The Glasgow Haskell Compiler
