[Bug bootstrap/42347] [4.5 Regression] sched-deps.c:3840:1: internal compiler error: in fixup_reorder_chain, at cfglayout.c:796

siarhei dot siamashka at gmail dot com gcc-bugzilla@gcc.gnu.org
Tue Apr 6 14:44:00 GMT 2010



------- Comment #10 from siarhei dot siamashka at gmail dot com  2010-04-06 14:44 -------
(In reply to comment #8)
> It would be really helpful if someone can explain how to reproduce this with a
> cross-compiler. I will analyze/fix this problem when this is reproducible with
> a cross.

I'm afraid this is not (easily) reproducible with a cross-compiler.

Now I double checked everything and "--disable-checking" option really does
break bootstrap on ppc and arm. Replacing it with "--enable-checking=assert"
results in a successful build. It's also interesting that this bug does not
affect x86 or x86-64.

I think a simple script can be used for bisecting and may help to find a
problematic "gcc_assert" (if it's really a problem). But this all will probably
take at least a few days to run till completion, neither arm nor ppc hardware
that I have is particularly fast...

Avoiding the use of "--disable-checking" option can be used as a workaround for
now.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42347



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