Double output after Ctrl+C on Windows

C:\Temp>type Test.hs
import Control.Exception
import System.Cmd
main = system "sleep 1m" `finally` putStrLn "goodbye"

C:\Temp>ghc --version
The Glorious Glasgow Haskell Compilation System, version 6.10.1

C:\Temp>ghc --make Test.hs
[1 of 1] Compiling Main             ( Test.hs, Test.o )
Linking Test.exe ...

C:\Temp>test.exe
^Cgoodbye
goodbye
C:\Temp>

The ^C is the consoles way of saying that Ctrl+C was pressed - i.e. I ran the program and hit Ctrl+C while the sleep was still ongoing. I can replicate this issue from the DOS prompt and from the Cygwin prompt. It does not occur from GHCi.

Trac metadata

Trac field	Value
Version	6.10.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Runtime System
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