#4425: the "impossible happened" while building regex-posix-0.94.4 with GHC 7
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Reporter: dleuschner | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 7.0.1 RC1 | Keywords:
Testcase: | Blockedby:
Os: Linux | Blocking:
Architecture: x86_64 (amd64) | Failure: Compile-time crash
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Here's the output...
Configuring regex-posix-0.94.4...
Preprocessing library regex-posix-0.94.4...
Building regex-posix-0.94.4...
[1 of 6] Compiling Text.Regex.Posix.Wrap (
dist/build/Text/Regex/Posix/Wrap.hs, dist/build/Text/Regex/Posix/Wrap.o )
SpecConstr
Function `lvl_s2xM{v} [lid]'
has three call patterns, but the limit is 0
Use -fspec-constr-count=n to set the bound
Use -dppr-debug to see specialisations
ghc: panic! (the 'impossible' happened)
(GHC version 7.0.0.20100924 for x86_64-unknown-linux):
initC: srt_lbl
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
By the way: I got lots of the "SpecConstr" warnings while building other
packages.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4425>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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