Core lint panic
Steps to reproduce:
- compile current HEAD
cd libraries/dph/examples/quickhull && make
This eventually fails with:
../../../../inplace/bin/ghc-stage2 -o seq/quickhullSVG --make vectSVG.hs -Odph -threaded -rtsopts -fsimplifier-phases=4 -fstrictness-before=3 -msse2 -fdph-seq -odir seq -hidir seq -package dph-bench -package-conf ../lib/dph-bench.conf -dcore-lint
[1 of 5] Compiling SVG ( SVG.hs, seq/SVG.o )
[5 of 5] Compiling Main ( vectSVG.hs, seq/Main.o )
ghc-stage2: panic! (the 'impossible' happened)
(GHC version 7.1.20101116 for i386-apple-darwin):
Iface Lint failure
In interface for vector-0.7.0.1:Data.Vector.Generic
Unfolding of step{v i3N4}
<no location info>:
[in body of lambda with binder s1{v i3N7} [lid] :: ghc-prim:GHC.Types.Int{(w) tc 3J}]
a29{v i3My} [lid] is out of scope
<no location info>:
In the type `vector-0.7.0.1:Data.Vector.Fusion.Stream.Monadic.Step{tc r2kS}
ghc-prim:GHC.Types.Int{(w) tc 3J} a{tv i3Ms} [tv]'
a{tv i3Ms} [tv] is out of scope
I can't find a smaller example and just make seq/quickhullSVG
works fine. The panic really only happens if some of the files are already built.
Trac metadata
Trac field | Value |
---|---|
Version | 7.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | |
Operating system | |
Architecture |