#4893: panic! the 'impossible' happened: initC: srt_lbl
---------------------------------------+------------------------------------
Reporter: plc | Owner:
Type: bug | Status: infoneeded
Priority: normal | Milestone: 7.0.2
Component: Compiler | Version: 7.0.1
Keywords: impossible, dcore-lint | Testcase:
Blockedby: | Difficulty:
Os: Linux | Blocking:
Architecture: x86 | Failure: GHC rejects valid
program
---------------------------------------+------------------------------------
Changes (by igloo):
* status: new => infoneeded
* milestone: => 7.0.2
Comment:
Thanks for the report.
Removing dependencies is generally more important than shortening,
although both are useful, and shortening can make it easier to remove
dependencies.
One way is to make sure you have an explicit export list, and then
iterate:
* Pick a function (or subexpression), and replace its body with
"undefined"
* Delete any functions that are now warned as being used
* Delete any imports that are now warned as being used
If you still have any imports left, you can often replace the imported
function `foo` with just
{{{
foo :: <type of foo>
foo = undefined
}}}
For this sort of bug, we certainly need some sort of testcase to work on
the bug, though.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4893#comment:2>
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
