[Gdb] Internal breakpoints

[ankit thukral]

hi all,
     i was debugging a program using GDB (in linux)
and realized that GDB puts some breakpoints of it's
own known as internal breakpoints.they are visible on
issuing the following command :

(gdb) maintainence info breakpoints

-2  shlib events   keep y   0x4000c9c0
<_dl_debug_state_internal>
        breakpoint already hit 3 times
-7  longjmp        keep n   0x4000f870 <longjmp>
-8  longjmp        keep n   0x42027240 <siglongjmp>
-9  longjmp        keep n   0x42027240 <siglongjmp>
-10 longjmp resume keep n   0x00000000

       can anyone explain to me in detail what are
these for?

thanks in advance,
ankit.

__________________________________
Do you Yahoo!?
The New Yahoo! Shopping - with improved product search
http://shopping.yahoo.com