First thing to do is to use -dcore-lint in case that nails it.
If that doesn't report anything, use
-dverbose-core2core -ddump-occur-anal -dppr-debug
-ddump-inlinings
and send me all the (voluminous) output.
Simon
| -----Original Message-----
| From: [EMAIL PROTECTED]
[mailto:glasgow-haskell-bugs-
| [EMAIL PROTECTED] On Behalf Of Abraham Egnor
| Sent: 27 January 2004 23:09
| To: [EMAIL PROTECTED]
| Subject: ghc 6.2 panic or program segfault, depending on flags
|
| If I compile my program with -O or -O2, I get the following:
|
| [EMAIL PROTECTED]:~/local/tla/genome/src/test] $ ghc -O -package genome -o
test
| test.hs
| ghc-6.2: panic! (the `impossible' happened, GHC version 6.2):
| simplCore/Simplify.lhs:1538: Non-exhaustive patterns in
function
| bind_args
|
| However, if I add -dcore-lint or remove the -O, the program compiles
but
| segfaults mid-run. This bug showed up when I added an "Eq a" context
to a
| typeclass definition in some code in the genome package (which itself
| compiles fine with or without optimizations).
|
| In addition, if instead of compiling the genome code as a package, I
build
| it into the test program using ghc --make, the resulting test program
| compiles *and* runs without problems, even with -O.
|
| Unfortunately, as with Isaac Jones, I working with Aetion internal
code
| and can't post it, but I'll happily do any follow-up investigation
people
| suggest.
|
| Abe
|
| _______________________________________________
| Glasgow-haskell-bugs mailing list
| [EMAIL PROTECTED]
| http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
_______________________________________________
Glasgow-haskell-bugs mailing list
[EMAIL PROTECTED]
http://www.haskell.org/mailman/listinfo/glasgow-haskell-bugs
