Re: more compile warnings

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От Bruce Momjian
Тема Re: more compile warnings
Дата
Msg-id 200212091842.gB9IgNQ15505@candle.pha.pa.us
обсуждение исходный текст
Ответ на Re: more compile warnings  (Tom Lane <tgl@sss.pgh.pa.us>)
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Tom Lane wrote:
> Bruce Momjian <pgman@candle.pha.pa.us> writes:
> > You would think that would catch it.  My problem is that I am compiling
> > with -O0, because I compile all day and I don't care about optimization.
> 
> You should reconsider that.  At -O0 gcc doesn't do any flow analysis,
> and thus you lose many important warnings.  I'd recommend -O1 at least.

Yes, I will re-add -O to my flags.  When I did it I forgot it would
affect warnings.  In fact, I am now seeing a similar warning in python
that I hadn't seen before, and others probably don't see it because they
don't compile python.

FYI, -O2 adds only 2 minutes to my 13 minute test script (but increases
the cpu usage from 4 to 6 minutes).

--  Bruce Momjian                        |  http://candle.pha.pa.us pgman@candle.pha.pa.us               |  (610)
359-1001+  If your life is a hard drive,     |  13 Roberts Road +  Christ can be your backup.        |  Newtown Square,
Pennsylvania19073
 


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