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Re: .bss section and uninitialised variables

From: Eric Botcazou <ebotcazou at libertysurf dot fr>
To: Kevin Puetz <puetzk at puetzk dot org>
Cc: gcc at gcc dot gnu dot org
Date: Wed, 22 Dec 2004 15:36:50 +0100
Subject: Re: .bss section and uninitialised variables
References: <Pine.GSO.4.60.0412221343280.16660@selje.idi.ntnu.no> <cqbvno$pr8$1@sea.gmane.org>

> In C/C++/most languages, you should not make any assumption about the
> initial value of variables - it is undefined by the language, and usually
> undefined on the platform as well.

It turns out that this is not true for Gisle's testcase: C99 explicitly says 
that 'myvar' must be initialized to 0 at run-time (C99 6.7.8 §10).

Gisle simply missed the -fcommon/-fno-common subtlety.

-- 
Eric Botcazou

References:
- .bss section and uninitialised variables
  - From: Gisle Grimen
- Re: .bss section and uninitialised variables
  - From: Kevin Puetz

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