[Cocci] Problem when using a macro for mangling function names

[Julia Lawall]

> Indeed, I don't want the metavariable to be bound to 'foo' nor to METH(foo). I
> want it to be bound  to the expanded value of METH(foo).
> For instance, say
> #define METH(x) prefix_##x
> I want the metavariable to be bound to prefix_foo when a METH(foo) is
> encountered. I want that because, it is legal that somewhere else in the code,
> there is direct reference to prefix_foo, and this should be detected by spatch
> to patch the  code correctly. I have the feeling (as a lambda user) that what
> I want could be not so easy to implement if spatch doesn't really expand the
> macros. What do you think about that?

In the current version of Coccinelle, it won't work.  Perhaps Yoann's 
solution will make it possible though.

julia