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  • Glasgow Haskell CompilerGlasgow Haskell Compiler
  • GHCGHC
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  • #9086
Closed
Open
Issue created May 07, 2014 by Niklas Hambüchen@nh2Reporter

main :: IO Int does different things with runghc and when compiled

Consider

main :: IO Int
main = return 1

This does different things when compiled and when run with runghc/runhaskell (it prints an extra 1 with the latter).

For practical purposes, I think it is beneficial if either of the two ways to run a Haskell program have the same output.

Or did somebody intend this to happen?

Trac metadata
Trac field Value
Version 7.8.2
Type Bug
TypeOfFailure OtherFailure
Priority normal
Resolution Unresolved
Component Compiler
Test case
Differential revisions
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CC mail@nh2.me
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