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Re: IMA corner case with forward declarations of statics

From: Mark Mitchell <mark at codesourcery dot com>
To: Zack Weinberg <zack at codesourcery dot com>
Cc: gcc at gcc dot gnu dot org, Geoff Keating <geoffk at geoffk dot org>, Andrew Pinski <apinski at apple dot com>
Date: Wed, 23 Jun 2004 19:58:22 -0700
Subject: Re: IMA corner case with forward declarations of statics
Organization: CodeSourcery, LLC
References: <87isdh65hh.fsf@taltos.codesourcery.com>

Zack Weinberg wrote:

Now, GCC 3.4's IMA doesn't do the right thing with this either; no
matter which order the files are given in, you get
Assembler messages:
Error: symbol `foo' is already defined
No one has noticed, which leads me to believe that this will not be a problem in real life. So I propose to detect the case where we would generate incorrect code, and call sorry() instead.

I think that's fine; it's certainly a progression.

If IMA were implemented as in other compilers (i.e., parse entire translation units in isolation, and then have a separate merge step) things would not get confused.

--
Mark Mitchell
CodeSourcery, LLC
(916) 791-8304
mark@codesourcery.com

Follow-Ups:
- Re: IMA corner case with forward declarations of statics
  - From: Geoff Keating

References:
- IMA corner case with forward declarations of statics
  - From: Zack Weinberg

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