incompatible GCC 4.4.5 and 4.5.1 libstdc++ ?

[Christophe Lyon]

Hi,

I have just faced a problem where a C++ program (which I get in binary
form - I can't recompile) crashes when it uses libstdc++.so.6 from
GCC-4.5.1, while it works when using libstdc++.so.6 from GCC-4.4.5.

I am using an x86 machine.

Are there any known incompatibilities between these two libraries?
As the major revision hasn't changed I didn't expect any behaviour change.

Thanks,

Christophe.