[ardour-dev] CVS Commit

[Tom Szilagyi]

On Mon, Apr 05, 2004 at 05:53:34PM +0200, Tom Szilagyi wrote:
> 
> When i finally started ardour, it segfaulted with the following
> message, after i tried to create a new session (named 'new').  The
> segfault happenes when i click the 'Create' button.
> Maybe this is because i didn't compile the ksi part?
> 
> 
> # ardour
> Ardour/GTK 0.462.1 running with libardour 0.736.0
> Loading UI configuration file /usr/local/etc/ardour/ardour_ui.rc
> Loading system configuration file /usr/local/etc/ardour/ardour_system.rc
> Loading user configuration file /root/.ardour/ardour.rc
> MIDI: MTC on port hw:0 MMC on port hw:0
> Use of deprecated SAXv1 function internalSubset
> ardour: [ERROR]: KeyboardTarget: unknown action "set-mouse-mode-scrub"
> Loading session /home/ardour/sessions/new using snapshot new
> Segmentation fault
> 

A little follow-up:
i fired up gdb to get some info about the above thing, and i got this.
(sorry, i'm a bit new to gdb, haven't really used it before,
so instructions welcome on how to do this better):

# gdb ardour
[...]
(gdb) run
Starting program: /usr/local/bin/ardour
[New Thread 1024 (LWP 2268)]
[New Thread 2049 (LWP 2269)]
[New Thread 1026 (LWP 2270)]
Ardour/GTK 0.462.1 running with libardour 0.736.0
Loading UI configuration file /usr/local/etc/ardour/ardour_ui.rc
Loading system configuration file /usr/local/etc/ardour/ardour_system.rc
Loading user configuration file /root/.ardour/ardour.rc
MIDI: MTC on port hw:0 MMC on port hw:0
Use of deprecated SAXv1 function internalSubset
ardour: [ERROR]: KeyboardTarget: unknown action "set-mouse-mode-scrub"
[New Thread 2051 (LWP 2271)]
Loading session /home/ardour/sessions/new using snapshot new
[New Thread 3076 (LWP 2272)]
[New Thread 4101 (LWP 2273)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1024 (LWP 2268)]
0x082d560d in Editor::metric_get_bbt ()
Current language:  auto; currently c++


So it looks like it's in the Editor::metric_get_bbt() function.
Trying to trace it down further:


# gdb ardour
[...]
(gdb) break 'Editor::metric_get_bbt(_GtkCustomRulerMark **, unsigned long, unsigned long, int)'
Breakpoint 1 at 0x82d539c
(gdb) run
Starting program: /usr/local/bin/ardour
[New Thread 1024 (LWP 2284)]
[New Thread 2049 (LWP 2285)]
[New Thread 1026 (LWP 2286)]
Ardour/GTK 0.462.1 running with libardour 0.736.0
Loading UI configuration file /usr/local/etc/ardour/ardour_ui.rc
Loading system configuration file /usr/local/etc/ardour/ardour_system.rc
Loading user configuration file /root/.ardour/ardour.rc
MIDI: MTC on port hw:0 MMC on port hw:0
Use of deprecated SAXv1 function internalSubset
ardour: [ERROR]: KeyboardTarget: unknown action "set-mouse-mode-scrub"
[New Thread 2051 (LWP 2287)]
Loading session /home/ardour/sessions/new using snapshot new
[New Thread 3076 (LWP 2288)]
[New Thread 4101 (LWP 2289)]
[Switching to Thread 1024 (LWP 2284)]

Breakpoint 1, 0x082d539c in Editor::metric_get_bbt ()
Current language:  auto; currently c++
(gdb) step
Single stepping until exit from function metric_get_bbt__6EditorPP19_GtkCustomRulerMarkUlUli,
which has no line number information.

Program received signal SIGSEGV, Segmentation fault.
0x082d560d in Editor::metric_get_bbt ()


So it looks like it's right there, at the beginning of the function.
Sorry for this long dump. Hope this helps.


Tom