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From: "chris at bubblescope dot net" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug libstdc++/23633] map::insert() invalidates reverse_iterators Date: Tue, 30 Aug 2005 20:21:00 -0000 [thread overview] Message-ID: <20050830201603.8980.qmail@sourceware.org> (raw) In-Reply-To: <20050830125045.23633.relf@os2.ru> ------- Additional Comments From chris at bubblescope dot net 2005-08-30 20:16 ------- Just so we are 100% clear on what is occuring (I realise it might not be obvious from my message) M.rbegin() returns an iterator i = std::reverse_iterator(M.end()); *i therefore returns *--(M.end()), which at first is the same as M.begin(). After we stick some more stuff into the container, then *i (which is still equal *--(M.end())) becomes something different, as more stuff has been pushed into the container. This is exactly what the standard requires we do, it's just unfortunatly that reverse_iterator is a little fragile in the presence of changing containers. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23633
next prev parent reply other threads:[~2005-08-30 20:16 UTC|newest] Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top 2005-08-30 13:01 [Bug c++/23633] New: " relf at os2 dot ru 2005-08-30 14:15 ` [Bug libstdc++/23633] " pinskia at gcc dot gnu dot org 2005-08-30 15:49 ` chris at bubblescope dot net 2005-08-30 20:21 ` chris at bubblescope dot net [this message] 2005-08-31 10:13 ` pcarlini at suse dot de
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