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Mail Archives: cygwin-developers/2001/10/22/20:46:40

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Date: Mon, 22 Oct 2001 20:47:40 -0400
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin-developers AT cygwin DOT com
Subject: Re: 1.3.4 status?
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On Tue, Oct 23, 2001 at 10:41:36AM +1000, Robert Collins wrote:
>My 2c on this is that this could be a lot worse than a malloc issue...
>even though it is occuring at process exit.

It's not a malloc issue.  gcc's -O3 optimization is screwing up regparm
parameter passing, specifically in fhandler_console::read which seems to
need to call alloca for some reason, although I can't say exactly why.
It's actually clobbering the EAX register almost immediately on entry into
the function.  AFAICT, EAX is the register that should hold the first
argument.

I knew that regparm was buggy with some gcc's.  Apparently 2.95.3 is one
of them.

cgf

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