Sorry about that (--dry-run fail), please ignore.
On Wed, Jun 28, 2017 at 1:53 PM, Snaipe <sna...@arista.com> wrote:
> From: Snaipe <sna...@diacritic.io>
>
> This patch makes the forementioned definitions `contexpr` when
> compiling C++11 and above with GNU extensions.
>
> gcc/cp/ChangeLog:
> 2017-06-27 Franklin “Snaipe” Mathieu <sna...@diacritic.io>
>
> PR c++/66639
> * decl.c (cp_make_fname_decl): Make declaration constexpr.
>
> gcc/testsuite/ChangeLog:
> 2017-06-27 Franklin “Snaipe” Mathieu <sna...@diacritic.io>
>
> PR c++/66639
> * g++.dg/pr66639.c: New test.
> ---
> gcc/cp/decl.c | 5 +++++
> gcc/testsuite/g++.dg/pr66639.C | 19 +++++++++++++++++++
> 2 files changed, 24 insertions(+)
> create mode 100644 gcc/testsuite/g++.dg/pr66639.C
>
> diff --git a/gcc/cp/decl.c b/gcc/cp/decl.c
> index 8e9a466..740ab71 100644
> --- a/gcc/cp/decl.c
> +++ b/gcc/cp/decl.c
> @@ -4384,6 +4384,11 @@ cp_make_fname_decl (location_t loc, tree id, int
> type_dep)
> TREE_READONLY (decl) = 1;
> DECL_ARTIFICIAL (decl) = 1;
>
> + /* extension: declare __func__, __FUNCTION__, and __PRETTY_FUNCTION__ as
> + constexpr. */
> + if (!flag_iso && cxx_dialect >= cxx11)
> + DECL_DECLARED_CONSTEXPR_P (decl) = 1;
> +
> TREE_USED (decl) = 1;
>
> if (current_function_decl)
> diff --git a/gcc/testsuite/g++.dg/pr66639.C b/gcc/testsuite/g++.dg/pr66639.C
> new file mode 100644
> index 0000000..51a92f9
> --- /dev/null
> +++ b/gcc/testsuite/g++.dg/pr66639.C
> @@ -0,0 +1,19 @@
> +// PR c++/66639
> +// { dg-do compile { target c++11 } }
> +// { dg-options "" }
> +
> +constexpr bool
> +streq(char const *lhs, char const *rhs)
> +{
> + return *lhs && *rhs
> + ? *lhs == *rhs && streq(lhs + 1, rhs + 1)
> + : !*lhs && !*rhs;
> +}
> +
> +int
> +main()
> +{
> + static_assert (streq(__func__, "main"), "");
> + static_assert (streq(__FUNCTION__, "main"), "");
> + static_assert (streq(__PRETTY_FUNCTION__, "int main()"), "");
> +}
> --
> Franklin "Snaipe" Mathieu
> Arista Networks, Ltd
>
--
Franklin "Snaipe" Mathieu
