Re: gdb aborts after setting "throw" catchpoint
On 30/05/2013 2:37 AM, Noel Grandin wrote: On 2013-05-29 23:23, Ryan Johnson wrote: GNU gdb (GDB) 7.6.50.20130408-cvs (cygwin-special) ... snip... Reading symbols from /home/Ryan/experiments/a.exe...done. (gdb) catch throw Catchpoint 1 (throw) That was a mistake in the documentation, they didn't actually get around to implementing it. They have since rectified that mistake, but it's only going to be in version 7.7 See bug: http://sourceware.org/bugzilla/show_bug.cgi?id=13588 That bug seems to be about adding filtering based on exception type, not about supporting catchpoints in general; the latter have worked for years in gdb-linux (at a minimum, my server at work can do it with gdb-7.4). The problem here is that gdb-cygwin crashes when running with a catchpoint enabled. I don't see any bugs on Sourceware about that, though I suspect the search interface is terrible so I could be missing something obvious. Ryan -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
Re: gdb aborts after setting "throw" catchpoint
On 2013-05-29 23:23, Ryan Johnson wrote: GNU gdb (GDB) 7.6.50.20130408-cvs (cygwin-special) ... snip... Reading symbols from /home/Ryan/experiments/a.exe...done. (gdb) catch throw Catchpoint 1 (throw) That was a mistake in the documentation, they didn't actually get around to implementing it. They have since rectified that mistake, but it's only going to be in version 7.7 See bug: http://sourceware.org/bugzilla/show_bug.cgi?id=13588 -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
gdb aborts after setting "throw" catchpoint
Hi all,
Compiling the following with the cygwin g++-4.5.3:
int global;
int main() {
if (global)
throw global;
return 0;
}
Crashes gdb if a catchpoint is set:
GNU gdb (GDB) 7.6.50.20130408-cvs (cygwin-special)
... snip...
Reading symbols from /home/Ryan/experiments/a.exe...done.
(gdb) catch throw
Catchpoint 1 (throw)
(gdb) r
Starting program: /home/Ryan/experiments/a.exe
[New Thread 10024.0x1480]
[New Thread 10024.0x1758]
warning: SuspendThread failed. (winerr 6)
[Inferior 1 (process 10024) exited normally]
(gdb)
Debugger aborted (core dumped)
Has anybody seen this problem before? Meanwhile, setting a breakpoint on
__cxa_throw works just fine, so at least there's a workaround.
Thoughts?
Ryan
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