Problem with g++ v3 initialization for multiple members of Class name:: <anonymous union>

[Edwin Chan/Toronto/IBM]

Hi,

This is the error message I got when compiling

 In constructor `SymbolExtension::SymbolExtension()':
symexti.h:57: initializations for multiple members of
`SymbolExtension::<anonymous union>'

What does that mean, and how can I fix it?
Thanks