Re: problem with completion and C++ mangling

[Daniel Berlin <dberlin at redhat dot com>]

Maciej Kalisiak <mac@cs.toronto.edu> writes:

> Hello all,
> 
> I'm new to the list so please forgive me if this was already discussed, but
> I'm extremely frustrated with this persistent problem: when doing function
> completion for a "break" command in a C++ program, the C++ demangling is not
> used, and thus the completion becomes useless.
> 
> Let me give you an example ("<TAB>" indicates where I press the Tab key):
> [khazad-dum !28 L2 ~/src/dmg] % gdb dmg
> GNU gdb 5.0
> Copyright 2000 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you are
> welcome to change it and/or distribute copies of it under certain conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for details.
> This GDB was configured as "i686-pc-linux-gnu"...
> (gdb) break Tree<TAB>
> TreeExplorer
> TreeExplorer type_info function
> TreeExplorer type_info node
> TreeExplorer virtual table
> TreeExplorer::TreeExplorer(DMGraph *, unsigned short, unsigned short)
> TreeExplorer::add_node_to_ann(node)
> TreeExplorer::ann_search(NilXState const &)
> TreeExplorer::build_nodes_on_traj(node, CtrlInp const &, vector<State, allocator<State> > const &)
> TreeExplorer::develop_node(node)
> TreeExplorer::execute(void)
> TreeExplorer::make_ann_tree(void)
> TreeExplorer::pick_node(void)
> TreeExplorer::pick_traj_len(void)
> TreeExplorer::reconnect(node, CtrlInp const &, vector<State, allocator<State> > const &, node)
> TreeExplorer::search_k(void)
> TreeExplorer::spawn(node, CtrlInp const &, vector<State, allocator<State> > const &)
> TreeExplorer::update_ann_tree(void)
> TreeExplorer::~TreeExplorer(void)
> (gdb) break TreeExplorer::bui<TAB>
> build__11TrajBuilderRt6vector2Z5StateZt9allocator1Z5StateUi
> build_nodes_on_traj__12TreeExplorerG4nodeRC7CtrlInpRCt6vector2Z5StateZt9allocator1Z5State
> (gdb) break TreeExplorer::build_nodes_on_traj__12TreeExplorerG4nodeRC7CtrlInpRCt6vector2Z5StateZt9allocator1Z5State
> the class TreeExplorer does not have any method named build_nodes_on_traj__12TreeExplorerG4nodeRC7CtrlInpRCt6vector2Z5StateZt9allocator1Z5State
> Hint: try 'TreeExplorer::build_nodes_on_traj__12TreeExplorerG4nodeRC7CtrlInpRCt6vector2Z5StateZt9allocator1Z5State<TAB> or 'TreeExplorer::build_nodes_on_traj__12TreeExplorerG4nodeRC7CtrlInpRCt6vector2Z5StateZt9allocator1Z5State<ESC-?>
> (Note leading single quote.)
> (gdb)
> 
> Is this a known bug, or is there some option I have to set?  Any help with this
> would be greatly appreciated; it really sucks to have to type
> everything in.
It's a known bug, with a patch to fix it to go into CVS soon.

Until then, just add a single quote before the C++ name, and
completion will work fine.

--Dan