Re: [PATCH 0/4] drop some "int x = x" hacks to silence gcc warnings

From: Joachim Schmitz <jojo@schmitz-digital.de>
Date: Mar 21, 2013, 13:44 UTC
Message-ID: <kif2so$2ug$1@ger.gmane.org>
In-Reply-To: <514AF2E1.7020409@viscovery.net>

Johannes Sixt wrote:

Show 8 quoted lines

> Am 3/21/2013 12:03, schrieb Jeff King:
>> I was fooling around with clang and noticed that it complains about
>> the "int x = x" construct under -Wall. That is IMHO a deficiency in
>> clang, since the idiom has a well-defined use in silencing
>> -Wuninitialized warnings.
>
> IMO, that's a myth. The construct invokes undefined behavior at least
> since C99, and the compilers are right to complain about it.

And I complained about this a couple months ago, as the compiler on HP-NonStop stumbles across this too (by emitting a warning)

Bye, Jojo

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