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Missing "var is used uninitialized" warning?

From: Georg-Johann Lay <avr at gjlay dot de>
To: gcc-help at gcc dot gnu dot org
Date: Sat, 17 Sep 2011 22:32:51 +0200
Subject: Missing "var is used uninitialized" warning?

Hi, compiled with -Wall -Wextra the wollowing lines don't complain about a being used uninitialized. Tried with 4.5 and 4.6. Am I missing something?

int func (void)
{
    int a = a;

    return a;
}

Follow-Ups:
- Re: Missing "var is used uninitialized" warning?
  - From: Jonathan Wakely

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