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// PR c++/28363 // { dg-do compile } template<typename T, template<int> class = T> // { dg-error "invalid use of type" } struct A; typedef int I; template<template<int> class = I> // { dg-error "invalid use of type" } struct B; struct S; template<template<int> class = S> // { dg-error "invalid use of type" } struct C;