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Date: Wed, 27 Jun 2001 22:21:05 -0400
From: Christopher Faylor <cgf AT redhat DOT com>
To: cygwin AT cygwin DOT com, cygwin-patches AT cygwin DOT com
Subject: Re: pthreads works, sorta - got it
Message-ID: <20010627222105.A29564@redhat.com>
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In-Reply-To: <00e501c0ff14$6ad8dd40$806410ac@local>; from robert.collins@itdomain.com.au on Thu, Jun 28, 2001 at 12:21:11AM +1000

On Thu, Jun 28, 2001 at 12:21:11AM +1000, Robert Collins wrote:
>Got the bug... attached is a correct patch that doesn't break anything
>AFAICT.
>
>GCC was optimising the variable access when the macro
>check_null_empty-path_errno was used, and accessing the memory area _before_
>the readcheck! The overhead of a proper function should be lower than that
>of VirtualQueryHowever, so I've made it a function. It could have the guts
>of check_null_empty_path copied into it for speed, but that's optional IMO.
>
>Wed Jun 27 23:30:00 2001  Robert Collins <rbtcollins AT hotmail DOT com>
>
>	* path.h (check_null_empty_path_errno): Convert to a function
>	prototype.
>	* path.cc (check_null_empty_path_errno): New function.
>	(check_null_empty_path): Change from VirtualQuery to IsBadWritePtr.
>	* resource.cc (getrlimit): Ditto.
>	(setrlimit): Ditto.
>	* thread.cc (check_valid_pointer): Ditto.

Thanks for the patch.  I took it a step further.  I renamed the _path
stuff to _str for consistency, and created some
check_null_invalid_struct* functions.

It has been checked in.

cgf

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