id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc
4089,Memory leak in Boost.Signals2 when the signal is not invoked,dan.berindei@…,Frank Mori Hess,"The attached program leaks memory by attaching and detaching slots from a signal in a loop:
{{{
boost::signals2::signal<void(void)> sig;
boost::signals2::connection conn1, conn2, conn3, conn4;

while (true) {
    conn1.disconnect();
    conn2.disconnect();

    conn1 = sig.connect(slot);
    conn2 = sig.connect(slot);

    conn3.disconnect();
    conn4.disconnect();

    conn3 = sig.connect(slot);
    conn4 = sig.connect(slot);

    //sig();
}
}}}
Invoking the signal (i.e. uncommenting the 'sig()' line) plugs the memory leak, however in my original setting it entails lots of unnecessary work so it's not a very good solution.

My guess is that _garbage_collector_it is set to _shared_state->connection_bodies().end() on invocation, but not on a new connection, so it never goes back to the beginning of the list.",Bugs,closed,To Be Determined,signals2,Boost 1.55.0,Problem,invalid,,