Internal breakpoints

ankit thukral
2003-10-01T06:18:18Z

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.

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