#1501: Panic in RegisterAlloc
-----------------------------+----------------------------------------------
Reporter: guest | Owner:
Type: bug | Status: new
Priority: normal | Milestone:
Component: Compiler (NCG) | Version: 6.7
Severity: normal | Keywords:
Difficulty: Unknown | Os: Multiple
Testcase: cmm002 | Architecture: x86
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The following code causes a panic when compiling with the NCG (i.e. with
{{{-fasm}}}).
{{{
stg_ap_0_fast {
bits32 y, x;
c7: y = bits32[x];
goto c7;
}
}}}
The panic is
{{{
ghc-6.7.20070620: panic! (the 'impossible' happened)
(GHC version 6.7.20070620 for i386-unknown-linux):
RegisterAlloc.joinToTargets
}}}
I do not know of any code that depends on this yet. I just tripped over it
when writting tests for the CPS pass.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/1501>
GHC <http://www.haskell.org/ghc/>
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