[arch-dev-public] [toolchain] gcc 4.5 breakage

[Thomas Bächler]

Am 05.05.2010 02:46, schrieb Allan McRae:
>> Now I noticed the exact same issue with busybox:
>> - Building with -Os throws lots of aliasing warnings, busybox's sed
>> breaks
>> - Building with -Os -fno-strict-aliasing builds without warnings, but it
>> still breaks.
>> - Building with -O0 works, but it isn't optimal.
> 
> Interesting...  Does fixing the aliasing fix this one too? I see no
> upstream bug reports that seem related so you should follow it up there.
>  I will pull in a new gcc-4.5 snapshot next week when I do the
> glibc-2.12 toolchain rebuild so hopefully that may contain a fix that I
> am missing...

I can only guess. You can remove -fno-strict-aliasing from the
mkinitcpio-busybox PKGBUILD and build, then count the number of warnings
- there's hundreds.

I opened an upstream bug report, but I was so far unable to produce a
test case they can use.

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