This behavior is relied on elsewhere, for setting BDEPENDs correctly.

Signed-off-by: Arsen Arsenović <ar...@gentoo.org>
---
Hi there,

I was trying to merge GDC, and noticed that the non-selfhost BDEPEND is
missing for GCC 13.  Specifically, the following block was never
enterred:

  # TODO: Add a pkg_setup & pkg_pretend check for whether the active compiler
  # supports D.
  if tc_has_feature d && tc_version_is_at_least 12.0 ; then
        # D in 12+ is self-hosting and needs D to bootstrap.
        # TODO: package some binary we can use, like for Ada
        # bug #840182
        BDEPEND+=" d? ( || ( sys-devel/gcc[d(-)] <sys-devel/gcc-12[d(-)] ) )"
  fi

This change enables the correct dependency to be emitted.

 eclass/toolchain.eclass | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/eclass/toolchain.eclass b/eclass/toolchain.eclass
index 6d8901d21812..06c044fd1d38 100644
--- a/eclass/toolchain.eclass
+++ b/eclass/toolchain.eclass
@@ -1,4 +1,4 @@
-# Copyright 1999-2022 Gentoo Authors
+# Copyright 1999-2023 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 # @ECLASS: toolchain.eclass
@@ -271,7 +271,7 @@ if [[ ${PN} != kgcc64 && ${PN} != gcc-* ]] ; then
        tc_version_is_at_least 8.0 &&
                IUSE+=" systemtap" TC_FEATURES+=( systemtap )
 
-       tc_version_is_at_least 9.0 && IUSE+=" d"
+       tc_version_is_at_least 9.0 && IUSE+=" d" TC_FEATURES+=( d )
        tc_version_is_at_least 9.1 && IUSE+=" lto"
        tc_version_is_at_least 10 && IUSE+=" cet"
        tc_version_is_at_least 10 && IUSE+=" zstd" TC_FEATURES+=( zstd )
-- 
2.39.1


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