test/InterfaceStubs/template-template-parm-decl.cpp

// RUN: %clang_cc1 -o - -emit-interface-stubs %s | FileCheck %s

// CHECK:      --- !experimental-ifs-v2
// CHECK-NEXT: IfsVersion: 2.0
// CHECK-NEXT: Triple:
// CHECK-NEXT: ObjectFileFormat: ELF
// CHECK-NEXT: Symbols:
// CHECK-NEXT: ...

template<template<typename...> class a> struct S6 { };