#3430: ghci crashes
-----------------------------+----------------------------------------------
Reporter: NeilMitchell | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 6.10.4 | Severity: normal
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
-----------------------------+----------------------------------------------
Given the two attached files, HLint.hs and System.Console.CmdArgs.hs, if I
do:
{{{
$ ghc --version
The Glorious Glasgow Haskell Compilation System, version 6.10.3.20090530
$ runhaskell HLint.hs helm
}}}
Then GHC segfaults. This is on Windows Vista.
I looked in to reducing this bug, and totally failed. If I modify a single
line, even totally unconnected, then it works. If I reduce any single
output string in the program by even 1 character, it then starts working.
I suspect there is a off-by-one error at some boundary condition, so while
the error is 100% repeatable, it doesn't look like an easy one to debug.
I suspect that something trivial like a change in the desugaring of any
construct will stop this bug happening with this particular file. However,
I suspect that just means the bug moves to a different magic constant and
will still be there underneath.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3430>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler_______________________________________________
Glasgow-haskell-bugs mailing list
[email protected]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
