Help on C++ and dynamic linker breakpoint

[James Duan]

Hi,

1. How can I set a breakpoint with condition related to a variable
in a C++ class, for example, support a is a class variable of class
C1, and func is a class function of it. I try to set a breakpoint
when a > 10.

I did:

break C1::func if C1::a>10

but it failed, and actually I tried other methods, but none works.
Currently I have to set:

break C1::func

and run the program to there and then add in the condition for the
breakpoint, is there any other better way?

2. How can I check which class function is in use for subclass?

For example, if parent class pc has a virtual funciton vf and the
child class cc has also defined a virtual function vf. It is clear
cc should call its own vf, but I have some trouble to see which one
it calls. Actually it goes completely to somewhere I even do not
know how it reach there. I want to know where I can find the patch
to handle the following message:

warning: Unable to find dynamic linker breakpoint function.
warning: GDB will be unable to debug shared library initializers
warning: and track explicitly loaded dynamic code.

Thanks.
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