Re: GUI integration

[Mike Miller]

On Sat, Aug 11, 2012 at 6:37 PM, John W. Eaton wrote:
> On 11-Aug-2012, Mike Miller wrote:
>
> | On Sat, Aug 11, 2012 at 5:59 PM, John W. Eaton <address@hidden> wrote:
> |
> | > I checked in the following change:
> | >
> | >   http://hg.savannah.gnu.org/hgweb/octave/rev/098546e95a5e
> |
> | With this revision I get a segfault when running after make install
> | and no ~/.config/octave directory. If I ./run-octave first and let it
> | create ~/.config/octave, then the installed copy of octave runs fine.
> | Maybe install_defaults() hasn't been called yet?
> |
> | Here's a gdb backtrace:
> | #0  0x00007ffff47e8f4b in std::basic_string<char,
> | std::char_traits<char>, std::allocator<char>
> | >::basic_string(std::string const&) ()
> |    from /usr/lib/x86_64-linux-gnu/libstdc++.so.6
> | #1  0x00007ffff4ca0805 in operator+<char, std::char_traits<char>,
> | std::allocator<char> > (__rhs=..., __lhs=...) at
> | /usr/include/c++/4.7/bits/basic_string.h:2365
> | #2  default_qt_settings_file () at 
> ../../../gui/gui/src/resource-manager.cc:67
>
> It works for me.
>
> The call to install_defaults happens in octave_initialize_interpreter,
> which is the first thing called in main, before calling
> octave_start_gui.
>
> Please set a breakpoint in default_qt_settings_file and step through
> it and examine the values of Voct_etc_dir and file_ops::dir_sep_str()
> before the crash.

Got it, resource_manager is initializing its instance before main is
called, a static singleton rather than created on-demand.

-- 
mike