[cfe-dev] Check assignment attributes compatibility

[Marc-André Lureau via cfe-dev]

Hi,

I am new to clang development, and I would like to have some warnings if an
assignment of function pointer doesn't match the LHS attributes: void
__attribute__((Attrs)) (*func)() = foo should warn if foo doesn't have
Attrs.

I have started adding some code around
Sema::CheckSingleAssignmentConstraints. I can get the attrs from the LHS,
LHSType.getTypePtr() / ->getAs<TypedefType>() if necessary / ->getDecl()
and use attribute getters. However, I have more trouble with the RHS for
some reason, RHS.get()->getType() is a FunctionProtoType. How can I get the
associated attributes from there?

thanks a lot
-- 
Marc-André Lureau
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