head panic when building dph?

[Ben Lippmeier]

On 14/03/2012, at 2:24 AM, Dimitrios Vytiniotis wrote:

> 
> Hi all, just checked out a fresh copy of HEAD and got the following:
> 
> "inplace/bin/ghc-stage2"   -H64m -O -fasm    -package-name dph-lifted-vseg-0.6.0.1 -hide-all-packages -i -ilibraries/dph/dph-lifted-vseg/./Data/Array/Parallel/Prelude/Int.hs -o libraries/dph/dph-lifted-vseg/dist-install/build/Data/Array/Parallel/Prelude/Int.o
> ghc-stage2: panic! (the 'impossible' happened)
>  (GHC version 7.5 for x86_64-unknown-linux):
>        ASSERT failed! file compiler/vectorise/Vectorise/Exp.hs, line 334
> 
> Please report this as a GHC bug:  http://www.haskell.org/ghc/reportabug
> 
> make[1]: *** [libraries/dph/dph-lifted-vseg/dist-install/build/Data/Array/Parallel/Prelude/Int.o] Error 1
> make: *** [all] Error 2
> dimitris at cam-04-unx:/64playpen/dimitris/GHC-HEAD/ghc$
> 
> I am just building with flavor=devel2 and no other special options on a Linux 64-bit machine.
> Any ideas?

I'm getting the same thing but I don't know what's wrong yet. There haven't been any changes to the DPH library for a couple of weeks -- I pushed a patch on the weekend but this was to dph-examples which is ignored by the build system.

Ben.