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From: Tom Lane <tgl@sss.pgh.pa.us>
To: Joe Conway <mail@joeconway.com>
cc: pgsql-committers@postgresql.org
Subject: Re: pgsql: Suppress "variable may be used uninitialized" warning.
In-reply-to: <55B81A67.1010104@joeconway.com>
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 <55B81A67.1010104@joeconway.com>
Comments: In-reply-to Joe Conway <mail@joeconway.com>
 message dated "Tue, 28 Jul 2015 17:12:23 -0700"
Date: Tue, 28 Jul 2015 20:54:18 -0400
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Joe Conway <mail@joeconway.com> writes:
>> Suppress "variable may be used uninitialized" warning.

> That's odd -- I compiled both with and without debug options looking
> for warnings and saw none.

That warning is very compiler-dependent; smarter compilers can prove
that an uninitialized usage is unreachable while dumber ones can't.
I saw it on RHEL6's gcc 4.4.7.  I figure that suppressing warnings
on any reasonably popular/modern compiler is fair game.

			regards, tom lane


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