[Rosegarden-devel] Problems getting set up with gdb

[Larry T. <lt...@we...>]

Greetings, development people,

I'm trying to debug the problem I'm having where rosegarden crashes on loading 
my autoload.rg.

I decided it was time to finally learn how to use gdb and its front-ends. 

Well, I've been having problems, and for now, to simplify things, I cut out 
the GUI front-ends and have been just trying to get debugging working with 
gdb.

I seem to be getting different results running rosegarden directly (it 
segfaults after setting up all the graphics and loading the autoload.rg), 
then when running it under gdb, where it exits -1 much earlier, sometime 
during the call to RosegardenApplication::start() in main().

So, classically, this is a symptom of some kind of memory corruption; however, 
I'm so new at trying to use gdb that I think it is possible that instead, I'm 
doing something wrong.

Thanks in advance for any hints about how my gdb setup could be wrong.

Regards

Larry Troxler

gdb session:

root@dhcp-37-8 ~/rosegarden]$ gdb /usr/bin/rosegarden
GNU gdb Red Hat Linux (5.2.1-4)
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GDB is free software, covered by the GNU General Public License, and
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This GDB was configured as "i386-redhat-linux"...
(gdb) bre main
Breakpoint 1 at 0x8136e34: file main.cpp, line 433.
(gdb) run
Starting program: /usr/bin/rosegarden
[New Thread 8192 (LWP 2791)]
[Switching to Thread 8192 (LWP 2791)]

Breakpoint 1, main (argc=1, argv=0xbffffa54) at main.cpp:433
433                               "ros...@sf...");
(gdb) next
434         aboutData.addAuthor("Guillaume Laurent, Chris Cannam, Richard 
Bown",0,
(gdb) next
436         KCmdLineArgs::init( argc, argv, &aboutData );
(gdb) next
437         KCmdLineArgs::addCmdLineOptions( options ); // Add our own 
options.
(gdb) next
438         KUniqueApplication::addCmdLineOptions(); // Add KUniqueApplication 
options.
(gdb) next
440             std::cout << "starting rosegarden app" << std::endl;
(gdb) next
starting rosegarden app
442         if (!RosegardenApplication::start()) return 0;
(gdb) step

Program exited with code 0377.
(gdb)