Yes, it works with structs of function pointers. And it works recursively. This works (this is slightly shorthand C, fill in the blanks yourself): struct

Yes, it works with structs of function pointers. And it works recursively. This works (this is slightly shorthand C, fill in the blanks yourself): struct config { void (*foo)(things bar); stuff (*bar)(int baz); }; always_inline stuff doit(config c) { c.foo(whatever); return c.bar(42); } always_inline void my_foo(...) { ... } always_inline stuff my_bar(...) { ... } stuff dostuff(void) { config c; c.foo = my_foo; c.bar = my_bar; return doit(c); } This'll all get inlined and specialized to death.