#4534: ghc7 can't build manatee-core!
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Reporter: guest | Owner:
Type: bug | Status: new
Priority: high | Milestone: 7.0.2
Component: Compiler | Version: 7.0.1
Keywords: | Testcase:
Blockedby: | Difficulty:
Os: Unknown/Multiple | Blocking:
Architecture: Unknown/Multiple | Failure: None/Unknown
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Comment(by simonmar):
These initC: srt_lbl panics aren't very informative. I tracked down the
reason we see a lot of these: it was due to a double-panic, the real
failure is a `cgLookupPanic`, due to invalid Core that `-dcore-lint` would
have picked up. My working GHC now emits:
{{{
$ ghc-testing1 4534.hs -c -O -fforce-recomp
ghc-stage1: panic! (the 'impossible' happened)
(GHC version 7.1.20101125 for x86_64-unknown-linux):
cgPanic (probably invalid Core; try -dcore-lint)
y{v aaA} [lid]
static binds for:
local binds for:
main:List.intersectFront1{v r6} [gid]
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
}}}
Incedentally this bug is a regression from 6.12.3.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/4534#comment:3>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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