From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31196 invoked by alias); 19 Dec 2014 01:17:29 -0000 Mailing-List: contact glibc-bugs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: glibc-bugs-owner@sourceware.org Received: (qmail 31128 invoked by uid 48); 19 Dec 2014 01:17:20 -0000 From: "bugdal at aerifal dot cx" To: glibc-bugs@sourceware.org Subject: [Bug nptl/17214] Expose a clone variant that shares stacks instead of jumping to a new one Date: Fri, 19 Dec 2014 01:17:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: nptl X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: bugdal at aerifal dot cx X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: security- 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://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2014-12/txt/msg00162.txt.bz2 https://sourceware.org/bugzilla/show_bug.cgi?id=17214 --- Comment #12 from Rich Felker --- Steven, a clone that behaved like vfork (returning twice in the same shared VM) would have all the same problems as vfork, i.e. it would be completely incompatible with modern compilers that do any nontrivial optimizations. vfork was eliminated for very good reasons, and it should not be brought back. -- You are receiving this mail because: You are on the CC list for the bug.