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From Branko ─îibej <br...@apache.org>
Subject Re: GCC (only?) and strict aliasing rules
Date Fri, 19 Jun 2015 15:07:14 GMT
On 19.06.2015 16:47, Yann Ylavic wrote:
> It seems that some versions of gcc still play bad with APR_RINGs when
> optimizations are on (O2).
> At least I can see warning when rings are created on the stack (eg.
> httpd's mpm_event, htcacheclean), and PR 57800 is possibly related
> (infinite loop with gcc-4.8 which I think is related to the assemby
> generated for APR_BRIGADE_PREPEND).
> How about adding/forcing -fno-strict-aliasing to APR flags (and
> include it apr1-config and related so that it is also exported to the
> user)?
> And what would be the way to do that if that's acceptable?

This would only "fix" compiling with gcc/clang but not with other
compilers that implement C aliasing rules correctly. Such problems
should really be fixed in the source.

-- Brane

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