Date: Wed, 19 Dec 2012 12:20:04 +0000 (UTC) From: Dimitry Andric <dim@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r244432 - stable/7/sbin/devd Message-ID: <201212191220.qBJCK49p091601@svn.freebsd.org>
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Author: dim Date: Wed Dec 19 12:20:04 2012 New Revision: 244432 URL: http://svnweb.freebsd.org/changeset/base/244432 Log: MFC r243907: Fix an old bug in devd, where it uses std::sort() to sort the various lists it reads from its configuration files on the priority field. Because some items in the lists have the same priority, and std::sort() is not stable, the exact order in which the items are enumerated does not have to correspond to the order they appear in the configuration files. Apparently this was never noticed with libstdc++, but with libc++ it could cause the "uhid" entry from /etc/devd/usb.conf to be used instead of the "ums" entry (which is earlier in the file). This caused the problem described in the PR: the USB mouse module was never loaded, and the other actions (such as starting moused) were not executed. To fix the problem, make devd use std:stable_sort() instead. Reported by: Jan Beich <jbeich@tormail.org> PR: bin/172958 Modified: stable/7/sbin/devd/devd.cc Directory Properties: stable/7/sbin/devd/ (props changed) Modified: stable/7/sbin/devd/devd.cc ============================================================================== --- stable/7/sbin/devd/devd.cc Wed Dec 19 12:19:56 2012 (r244431) +++ stable/7/sbin/devd/devd.cc Wed Dec 19 12:20:04 2012 (r244432) @@ -351,7 +351,7 @@ public: void config::sort_vector(vector<event_proc *> &v) { - sort(v.begin(), v.end(), epv_greater()); + stable_sort(v.begin(), v.end(), epv_greater()); } void
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