[Bug c++/29131] [DR 225] Bad name lookup for templates due to fundamental types namespace for ADL.

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29131

--- Comment #21 from Jason Merrill <jason at gcc dot gnu.org> 2012-04-26 14:09:14 UTC ---
(In reply to comment #20)
> glm::vec3 does not seem like a fundamental type.

It isn't, but its associated namespace is glm, and your f isn't in glm.