Input Filters fail to work when overriden through server configuration

[Robert Carr]

While InputFilters appear to work in tests (tests/integration-tests/android) when overriden through the server configuration as in:

http://code.launchpad.net/~robertcarr/mir/demo-input-filters (see file examples/demo_input_filters.cpp)

they seem to not work. By the the time InputFilter is invoked by the FilterChain (in reponse to key events) somehow the shared_ptr member has become NULL. Investigation with GDB is strange, in mi::create_input_manager event_filters contains a non-NULL EventFilter member...by the time the EventFilterChain constructor is reached it's null triggering the segfault seen in the example.

You should be able to reproduce the segfault:

chmod 777 /dev/input/* // ;)
./buils/bin/mir_demo_input_filters --enable-input=true
<Type some characters>

[Robert Carr (robertcarr)]

Something needs to keep a reference to the initializer_list for seemingly non identifiable reasons (there should be a reference on the stack down through the EventFilterChain constructor as described above)! See r568...does someone understand?

[PS Jenkins bot (ps-jenkins)]

Fix committed into lp:mir at revision 587, scheduled for release in mir, milestone 0.0.3