Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/ext/attr-warning.C @ 152:2b5abeee2509
update gcc11
author | anatofuz |
---|---|
date | Mon, 25 May 2020 07:50:57 +0900 |
parents | 84e7813d76e9 |
children |
line wrap: on
line source
// Bug c++/83871 - wrong code due to attributes on distinct template // specializations // Test to verify that an explicit template specifialization does not // "inherit" attribute warning from a primary template declared with // it. // { dg-do compile } // { dg-options "-Wall" } struct Special; // Primary has no attributes here. template <class T> void fwarn_primary (); // Uses of the primary template, including declarations of its // specializations, should not be diagnosed until after it has // been redeclared with attribute warning. template <> void fwarn_primary<Special> (); void use_primary_before_warning () { // Verify that uses of the primary are not diagnosed. fwarn_primary<char>(); fwarn_primary<short>(); } // Redeclare the primary with attribute warning. template <class T> void __attribute__ ((warning ("primary"))) fwarn_primary (); // Attribute warning is special in that it only warns for functions // that are actually used, not those that are only declared. template <> void fwarn_primary<double> (); void use_primary_after_warning () { // Verify that uses of the redeclared primary are diagnosed. fwarn_primary<int>(); // { dg-warning "primary" } fwarn_primary<long>(); // { dg-warning "primary" } } void use_special () { // Verify that the use of the specializatoin is not diagnosed. fwarn_primary<Special>(); }