Re: Can't "catch exception" in gdb on OS X

[Jerry <lanceboyle@qwest.net>]

On Saturday, March 5, 2016 at 1:30:44 AM UTC-7, Simon Wright wrote:
> Jerry writes:
> 
> > I'm on OS X 10.9.5 trying to debug a GNAT program. When I type
> >
> >    catch exception
> >
> > when the program is in the debugger but paused at the automatically
> > inserted breakpoint at the first line, I get this:
> >
> >     Cannot insert Ada exception catchpoints in this configuration.
> 
> I wrote about this at [1]; there's a GDB Bugzilla entry about it[2].
> 
> The simplest solution I've found is to invoke gdb with -readnow.
> 
> [1] http://forward-in-code.blogspot.co.uk/2012/01/catching-exceptions-in-gdb.html
> [2] https://sourceware.org/bugzilla/show_bug.cgi?id=11385

Thanks, Simon. Google didn't point me to your blog because I entered the current gdb error text and it looks like the text has changed since you wrote.

Your suggestions including using -readnow in the gdb call and first telling gdb to "break __gnat_debug_raise_exception" work on GNAT GPL 2015 but not GPL 2014 on my machine running OS X 10.9.5. I also have FSF gcc-4.9.1 installed but it isn't codesigned and I didn't bother with trying it. If this would be useful feedback I will do that (codesign, reboot).

For GPL 2015, behavior was the same whether or not I used -readnow. In both cases, I had to first "start" before having "catch exception" recognized.

Jerry