[PATCHes] Misc aliasing fixes for building DLL with gcc-4.5.0

Dave Korn dave.korn.cygwin@googlemail.com
Mon Aug 10 16:23:00 GMT 2009

Christopher Faylor wrote:
> On Mon, Aug 10, 2009 at 05:28:16AM +0100, Dave Korn wrote:

>>  My turn to say "ugh"!  The wrapper function would translate down to a single
>> 'jmp' if -fno-omit-frame-pointer was in effect, but as things stand it's a bit
>> ugly.  So maybe we should let both of these rest for a while and see how things
>> pan out upstream.
> Yes, sometimes we do ugly things in Cygwin to avoid slowdowns, even if
> it is to avoid a simple "jmp".

  Sure.  So, let's leave this one out and wait for the bug to get fixed in GCC.

>>> Also, referring to a bug without explaining what the problem either in
>>> the source code or the ChangeLog is a guaranteed way to cause confusion
>>> tomorrow after a memory cache refresh.
>>  You mean the PR notation?  Hopefully GCC's bugzilla will still be there
>> tomorrow!  Anyway, with a bit of luck we won't end up needing this one at all.
> Whether it is there tomorrow or not, we don't want to expect someone who
> reads source code to know where to go to look for a gcc bugzilla entry.

  Righto, will make a mental note for future patches.


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