10e5d7b8cSRichard Smith struct DefinedInBImpl { 20e5d7b8cSRichard Smith void f(); 30e5d7b8cSRichard Smith struct Inner {}; 40e5d7b8cSRichard Smith friend void FoundByADL(DefinedInBImpl); 50e5d7b8cSRichard Smith }; 6*3d23c420SRichard Smith 7*3d23c420SRichard Smith @import cxx_templates_common; 8*3d23c420SRichard Smith template struct TemplateInstantiationVisibility<char[1]>; 9*3d23c420SRichard Smith extern template struct TemplateInstantiationVisibility<char[2]>; 10*3d23c420SRichard Smith template<> struct TemplateInstantiationVisibility<char[3]> {}; 11*3d23c420SRichard Smith extern TemplateInstantiationVisibility<char[4]>::type 12*3d23c420SRichard Smith TemplateInstantiationVisibility_ImplicitInstantiation; 13