When I did some experiments about vtable, and modified the virtual
method address myself,
I found error report : "Segment fault". When I see the /proc/self/maps,
vtable is in the readonly text segment.
I almost forget the fact that vtables have been stored in readonly segment.
So I have a question : how to effectively verify one memory block is
only readable or writable?
I think it's not efficient to check all the parts in /proc/maps.
Does anyone have another efficient way to do this verification?
Thanks in advance.
- mudongliang
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