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Message-ID: <20030317015922.15816.qmail@web21401.mail.yahoo.com>
Date: Mon, 17 Mar 2003 12:59:21 +1100 (EST)
From: =?iso-8859-1?q?Danny=20Smith?= <danny_r_smith_2001 AT yahoo DOT co DOT nz>
Subject: Re: cygwin gcc 3.4 and cygwin
To: Brian Ford <ford AT vss DOT fsi DOT com>, cygwin AT cygwin DOT com
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Brian Ford wrote:

> Vanilla gcc 3.2.x is NOT ABI compatible with Cygwin's pre 3.2 gcc, fact.
> I wanted to know why this was allowed to persist given the simple patch
> required to fix it, question.  I had seen Mr. Faylor make statements
> before to the effect of: doubles in structures are not that common so who
> cares, so I advised caution in his use of that compiler for official
> Cygwin released software.

Regarding the structure alignment problem:

Adding -malign-double to compile switches should provide forward/backward/MSVC
compatibility.

The other fix is to rebuild gcc from  sources so that -malign-double is the
default (as it is now on trunk for cygwin).

Mr. Danny


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