From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 28290 invoked by alias); 27 Jan 2015 12:30:37 -0000 Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Archive: List-Post: List-Help: Sender: gcc-bugs-owner@gcc.gnu.org Received: (qmail 28130 invoked by uid 48); 27 Jan 2015 12:30:27 -0000 From: "jakub at gcc dot gnu.org" To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/64535] Emergency buffer for exception allocation too small Date: Tue, 27 Jan 2015 12:30:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: gcc X-Bugzilla-Component: libstdc++ X-Bugzilla-Version: 5.0 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: jakub at gcc dot gnu.org X-Bugzilla-Status: RESOLVED X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: rguenth at gcc dot gnu.org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit X-Bugzilla-URL: http://gcc.gnu.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2015-01/txt/msg03071.txt.bz2 https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64535 --- Comment #22 from Jakub Jelinek --- Can't you use a .bss object for the initial case, so you don't malloc anything in the ctor unless user requests something larger than that? That way "freeing" that would be handled in most cases. And I assume you really can't dlclose libstdc++ while other threads are handling exceptions, because then those libraries should use libstdc++ entry points and either would need to be dlclosed too, or libstdc++ wouldn't be really unmapped.