#2561: Using "ITstring !FastString" in Lexer.x goes wrong (internal error:
stg_ap_v_ret)
-------------------------+--------------------------------------------------
Reporter: igloo | Owner:
Type: bug | Status: new
Priority: normal | Milestone: 6.10 branch
Component: Compiler | Version: 6.8.3
Severity: normal | Keywords:
Difficulty: Unknown | Testcase:
Architecture: Unknown | Os: Unknown
-------------------------+--------------------------------------------------
With this patch:
{{{
hunk ./compiler/parser/Lexer.x 535
+#if __GLASGOW_HASKELL__ >= 609
+ | ITstring !FastString
+#else
hunk ./compiler/parser/Lexer.x 539
+#endif
}}}
something goes wrong. The first sign, when validating, is that `timeout`
is broken:
{{{
timeout: internal error: stg_ap_v_ret
(GHC version 6.9.20080902 for x86_64_unknown_linux)
Please report this as a GHC bug:
http://www.haskell.org/ghc/reportabug
}}}
If you use the python timeout program instead then you find a few tests
fail, e.g.:
{{{
testsuite/tests/ghc-regress/codeGen/should_run$
'/home/ian/ghc/darcs/st2/ghc/stage2-inplace/ghc' -fforce-recomp -dcore-
lint -dcmm-lint -Dx86_64_unknown_linux -dno-debug-output -o cg052
cg052.hs -O -fasm -funbox-strict-fields
testsuite/tests/ghc-regress/codeGen/should_run$ ./cg052
ok
cg052: internal error: stg_ap_v_ret
(GHC version 6.9.20080902 for x86_64_unknown_linux)
Please report this as a GHC bug:
http://www.haskell.org/ghc/reportabug
zsh: abort ./cg052
}}}
I'm not sure what's going on, but it seems to be repeatable.
--
Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/2561>
GHC <http://www.haskell.org/ghc/>
The Glasgow Haskell Compiler
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