urk! lookup local fingerprint with -O and TemplateHaskell
An interesting feature of this bug is that it goes away when TemplateHaskell is removed (it's cut down from a much larger test case which actually used that)
-O is also necessary.
ghc -c -O Foo.hs
ghc: panic! (the 'impossible' happened)
(GHC version 6.10.0.20081007 for i386-unknown-mingw32):
urk! lookup local fingerprint main:Foo.:CoActionT{tc rj4}
Trac metadata
| Trac field | Value |
|---|---|
| Version | 6.10.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | ganesh.sittampalam@credit-suisse.com |
| Operating system | |
| Architecture |