gdb user defined function

Tom Tromey tromey@redhat.com
Mon Jan 16 20:46:00 GMT 2012


>>>>> "Sinbad" == Sinbad  <sinbad.sinbad@gmail.com> writes:

Sinbad> i am trying to write a user-defined function in gdb.
Sinbad> while analyzing the core is it possible to see if a
Sinbad> pointer variable is accessible or not inside a gdb
Sinbad> user-defined function. for example.
Sinbad> (gdb) p *ptr
Sinbad> cannot access memory at address 0x35336
Sinbad> is there any way to find this inside a gdb function.
Sinbad> i need something as follows
Sinbad> define sub
Sinbad>    is_accessible(ptr)
Sinbad> end

I can't think of an easy way to do this from the gdb CLI, but you can do
it from Python by catching the exception.

You could straightforwardly write a $is_valid function that examines a
pointer for validity.

Tom



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