From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | Thomas Lockhart <thomas(at)fourpalms(dot)org> |
Cc: | Peter Eisentraut <peter_e(at)gmx(dot)net>, PostgreSQL Hackers List <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: Patches applied; initdb time! |
Date: | 2002-04-21 22:11:05 |
Message-ID: | 27608.1019427065@sss.pgh.pa.us |
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Lists: | pgsql-bugs pgsql-hackers |
Thomas Lockhart <thomas(at)fourpalms(dot)org> writes:
> But I do override some parameters in my Makefile.custom:
> CFLAGS+= -g -O0 -DUSE_ASSERT_CHECKING
>> If you use -O0 then you miss most of the interesting warnings.
> ?? Not in this case. afaik -O0 suppresses most optimizations
In particular, you don't get "unused variable" and "variable may not
have been set before being used" warnings at -O0, because the
control-flow analysis needed to emit those warnings is not done at -O0.
I generally use -O1 for development; it's sometimes a little hairy
stepping through the generated code, but usually gcc works well enough
at -O1, and I get the important warnings.
regards, tom lane
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