[maemo-developers] [maemo-developers] Problem with GDB and threads...

[From: Eero Tamminen]

Hi,

> This finally did the trick. I configured and compiled glibc using 
> ./configure [...] CFLAGS="-g -O2 -fno-omit-frame-pointer"
>
> Now the backtrace doesn't repeat forever, although I still get
> "Previous frame identical to this frame (corrupt stack?)".

To debug functions which do not return (have attribute((noreturn))),
you need to compile those functions with -fno-omit-frame-pointer
(or remove the noreturn attribute). Both omitting a frame-pointer
and noreturn attribute are just optimizations.

To debug a static function (by debugging I mean having a backtrace
going through that function), you need debug symbols for the library
in which the function resides.  libc6 debug package is quite large,
but you can remove the .so files directly in /usr/lib/debug/ as Gdb
works just fine also with the (smaller/newer) debug symbol files
in the subdirectories of /usr/lib/debug/.


	- Eero