gcc/testsuite/g++.dg/modules/indirect-3_b.C

// { dg-additional-options "-fmodules-ts -fdump-lang-module-blocks-uid-alias" }
export module bar;
// { dg-module-cmi bar }

import foo;

namespace bar
{
  export int quux (int i = foo::X().frob<0> ())
  {
    return i;
  }

  export int toto (int i = foo::TPL<0>().frob ())
  {
    return i;
  }
}

// { dg-final { scan-lang-dump {Lazily binding '::foo@foo:.::X'@'foo' section} module } }
// { dg-final { scan-lang-dump {Wrote import:-[0-9]* template_decl:'::foo@foo:.::X@foo:.::template frob@foo:.'@foo} module } }

// { dg-final { scan-lang-dump {Lazily binding '::foo@foo:.::TPL'@'foo' section} module } }
// { dg-final { scan-lang-dump {Wrote import:-[0-9]* template_decl:'::foo@foo:.::template TPL@foo:.'@foo} module } }

// { dg-final { scan-lang-dump {Cluster members:\n  \[0\]=specialization definition '::foo@foo:.::TPL<0x0>'\n  \[1\]=specialization declaration '::foo@foo:.::TPL<0x0>::TPL<0x0>'\n(  \[.\]=[^\n]* '\n)*  \[.\]=decl definition '::foo@foo:.::TPL<0x0>::frob<0x0>'\n} module } }

// { dg-final { scan-lang-dump {Cluster members:\n  \[0\]=specialization definition '::foo@foo:.::X@foo:.::frob<0x0>'} module } }
// { dg-final { scan-lang-dump {Writing:-[0-9]*'s type spec merge key \(specialization\) type_decl:'::foo@foo:.::TPL<0x0>'} module } }
// { dg-final { scan-lang-dump {Writing:-[0-9]*'s decl spec merge key \(specialization\) function_decl:'::foo@foo:.::X@foo:.::frob<0x0>'} module } }