Hello,
I am trying to get KDE's crash reported ("DrKonqi") to work with lldb. This is
part of KDE's runtime, and is designed to catch runtime exceptions (crashes).
When they occur, a debugger is launched, instructed to connect to the failing
process, and then to provide a backtrace.
Much like Apple's crash reporter, but more elaborate.
On systems with the GNU toolchain, the debugger used is gdb launced as
gdb -nw -n -batch -x %tempfile -p %pid %execpath
Where %pid is the crashed process ID, %execpath the full path to the binary,
and %tempfile a batch file containing the commands
set width 200
thread
thread apply all bt
I currently have the following for using lldb:
lldb -s %tempfile -p %pid < /dev/null
%tempfile:
set set term-width 200
thread info
bt all
quit
The redirection from /dev/null is necessary because otherwise lldb will not
respect the quit command (when read from a batch file; that must be a bug?)
In itself this works, except that I do not always get useful information. A
full discussion can be found at https://git.reviewboard.kde.org/r/121286/ , and
it shows an example where one can only "see back to when" the crash handler was
invoked.
Sadly I cannot compare because I haven't (yet) been able to get gdb (from
MacPorts) to be permitted to function on my 10.9 system, but the same system
booted into 10.6.8 will work just fine with Apple's gdb.
Any useful suggestions on how best to do post-mortem debugging with lldb will
be greatly appreciated!
René
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