diff --git a/gcc/cp/name-lookup.cc b/gcc/cp/name-lookup.cc index a8b9229b29ec9d9678101f691a41a57d8d24fde6..50aeb776ae271b68803a980b6771902ebc78d07f 100644 --- a/gcc/cp/name-lookup.cc +++ b/gcc/cp/name-lookup.cc @@ -4846,12 +4846,16 @@ do_nonmember_using_decl (name_lookup &lookup, bool fn_scope_p, bool exporting = revealing_p && module_exporting_p (); if (exporting) { + /* Module flags for templates are on the template_result. */ + tree decl = STRIP_TEMPLATE (new_fn); + /* If the using decl is exported, the things it refers - to must also be exported (or not habve module attachment). */ - if (!DECL_MODULE_EXPORT_P (new_fn) - && (DECL_LANG_SPECIFIC (new_fn) - && DECL_MODULE_ATTACH_P (new_fn))) + to must also be exported (or not have module attachment). */ + if (!DECL_MODULE_EXPORT_P (decl) + && (DECL_LANG_SPECIFIC (decl) + && DECL_MODULE_ATTACH_P (decl))) { + auto_diagnostic_group d; error ("%q#D does not have external linkage", new_fn); inform (DECL_SOURCE_LOCATION (new_fn), "%q#D declared here", new_fn); diff --git a/gcc/testsuite/g++.dg/modules/using-9.C b/gcc/testsuite/g++.dg/modules/using-9.C new file mode 100644 index 0000000000000000000000000000000000000000..4290280d89756d57d3f383187fd4ab9b6e9225a7 --- /dev/null +++ b/gcc/testsuite/g++.dg/modules/using-9.C @@ -0,0 +1,13 @@ +// PR c++/106849 +// { dg-additional-options "-fmodules-ts" } +// { dg-module-cmi !lib } + +export module lib; + +namespace outer { + template<typename T> void any_of(T) { } // { dg-note "declared here" } +} + +export using outer::any_of; // { dg-error "does not have external linkage" } + +// { dg-prune-output "not writing module" }