Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sources.redhat.com Delivered-To: mailing list cygwin@sources.redhat.com Message-Id: <200011202245.eAKMjjN27680@plmlir3.mail.eds.com> From: "Kelley Cook" To: "Cygwin mailing list" , "GCC Bugs" Cc: "Zack Weinberg" Date: Mon, 20 Nov 2000 17:45:26 -0500 Reply-To: "Kelley Cook" X-Mailer: PMMail 2000 Standard (2.10.2010) For Windows 2000 (5.0.2195;1) MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Subject: Reason for cygwin GCC 2.97 non-bootstrap found After much binary searching this weekend, I discovered the reason why Cygwin hasn't been able to bootstrap since late August. It currently fails with a multiple segmentation faults in stage1 -- see: http://gcc.gnu.org/ml/gcc-bugs/2000-11/msg00392.html http://gcc.gnu.org/ml/gcc-bugs/2000-09/msg00059.html http://gcc.gnu.org/ml/gcc-bugs/2000-08/msg00662.html http://gcc.gnu.org/ml/gcc-bugs/2000-10/msg00489.html It was a patch by Zack Weinberg committed on August 24th 2000 -- http://gcc.gnu.org/ml/gcc-patches/2000-08/msg01009.html. 2000-08-24 Zack Weinberg * ggc-page.c (alloc_page): If HAVE_MMAP_ANYWHERE and we're asked for one page, allocate GGC_QUIRE_SIZE of them and put the extras on the free list. (release_pages): Clean up. (ggc_set_mark): Don't adjust G.allocated here... (sweep_pages): ... do it here. Reversing this patch does allow current CVS cygwin to return to bootstrap land. Actually all you have to reverse is the first two hunks (the define and the changes to alloc_page); the cleanup hunks corresponding to release_pages, gcc_set_mark, and sweep_pages work fine. I have tried a few simple workarounds, but it appears that I am not currently familiar enough with cygwin to attempt a workaround, so unfortunately I have to leave it up to someone more familiar to fix the problem. -- Kelley Cook -- Want to unsubscribe from this list? Send a message to cygwin-unsubscribe@sourceware.cygnus.com