[Bug c++/83503] [8 Regression] bogus -Wattributes for const and pure on function template specialization

["msebor at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83503

--- Comment #20 from Martin Sebor <msebor at gcc dot gnu.org> ---
Author: msebor
Date: Tue Feb 27 22:28:21 2018
New Revision: 258045

URL: https://gcc.gnu.org/viewcvs?rev=258045&root=gcc&view=rev
Log:
PR c++/83871 - wrong code for attribute const and pure on distinct template
specializations
PR c++/83503 - [8 Regression] bogus -Wattributes for const and pure on function
template specialization

gcc/ChangeLog:

        PR c++/83871
        * gcc/doc/invoke.texi (-Wmissing-attributes): New option.
        * gcc/print-tree.c (print_node): Handle DECL_UNINLINABLE.

gcc/c-family/ChangeLog:

        PR c++/83871
        * c.opt (-Wmissing-attributes): New option.

gcc/cp/ChangeLog:

        PR c++/83871
        PR c++/83503
        * cp-tree.h (warn_spec_missing_attributes): New function.
        ((check_explicit_specialization): Add an argument.  Call the above
        function.
        * decl.c (duplicate_decls): Avoid applying primary function template's
        attributes to its explicit specializations.
        cp/pt.c (warn_spec_missing_attributes): Define.

gcc/testsuite/ChangeLog:

        PR c++/83871
        PR c++/83503
        * g++.dg/Wmissing-attributes.C: New test.
        * g++.dg/ext/attr-const-pure.C: New test.
        * g++.dg/ext/attr-const.C: New test.
        * g++.dg/ext/attr-deprecated-2.C: New test.
        * g++.dg/ext/attr-malloc-2.C: New test.
        * g++.dg/ext/attr-malloc.C: New test.
        * g++.dg/ext/attr-noinline-2.C: New test.
        * g++.dg/ext/attr-noinline.C: New test.
        * g++.dg/ext/attr-nonnull.C: New test.
        * g++.dg/ext/attr-noreturn-2.C: New test.
        * g++.dg/ext/attr-noreturn.C: New test.
        * g++.dg/ext/attr-nothrow-2.C: New test.
        * g++.dg/ext/attr-nothrow.C: New test.
        * g++.dg/ext/attr-optimize.C: New test.
        * g++.dg/ext/attr-pure.C: New test.
        * g++.dg/ext/attr-returns-nonnull.C: New test.
        * g++.dg/ext/attr-warning.C: New test.


Added:
    trunk/gcc/testsuite/g++.dg/Wmissing-attributes.C
    trunk/gcc/testsuite/g++.dg/ext/attr-const-pure.C
    trunk/gcc/testsuite/g++.dg/ext/attr-const.C
    trunk/gcc/testsuite/g++.dg/ext/attr-deprecated-2.C
    trunk/gcc/testsuite/g++.dg/ext/attr-malloc-2.C
    trunk/gcc/testsuite/g++.dg/ext/attr-malloc.C
    trunk/gcc/testsuite/g++.dg/ext/attr-noinline-2.C
    trunk/gcc/testsuite/g++.dg/ext/attr-noinline.C
    trunk/gcc/testsuite/g++.dg/ext/attr-nonnull.C
    trunk/gcc/testsuite/g++.dg/ext/attr-noreturn-2.C
    trunk/gcc/testsuite/g++.dg/ext/attr-noreturn.C
    trunk/gcc/testsuite/g++.dg/ext/attr-nothrow-2.C
    trunk/gcc/testsuite/g++.dg/ext/attr-nothrow.C
    trunk/gcc/testsuite/g++.dg/ext/attr-optimize.C
    trunk/gcc/testsuite/g++.dg/ext/attr-pure.C
    trunk/gcc/testsuite/g++.dg/ext/attr-returns-nonnull.C
    trunk/gcc/testsuite/g++.dg/ext/attr-warning.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/c-family/ChangeLog
    trunk/gcc/c-family/c.opt
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/cp-tree.h
    trunk/gcc/cp/decl.c
    trunk/gcc/cp/pt.c
    trunk/gcc/doc/invoke.texi
    trunk/gcc/print-tree.c
    trunk/gcc/testsuite/ChangeLog