[Bug c++/98486] Variable template specialization doesn't account for primary's constraints
cvs-commit at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Wed Oct 6 14:15:30 GMT 2021
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98486
--- Comment #2 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Patrick Palka
<ppalka@gcc.gnu.org>:
https://gcc.gnu.org/g:729cf2ea979f396e706625b1669087d5920b8c2a
commit r11-9081-g729cf2ea979f396e706625b1669087d5920b8c2a
Author: Patrick Palka <ppalka@redhat.com>
Date: Thu Sep 16 15:03:55 2021 -0400
c++: constrained variable template issues [PR98486]
This fixes some issues with constrained variable templates:
- Constraints aren't checked when explicitly specializing a variable
template.
- Constraints aren't attached to a static data member template at
parse time.
- Constraints don't get propagated when (partially) instantiating a
static data member template, so we need to make sure to look up
constraints using the most general template during satisfaction.
PR c++/98486
gcc/cp/ChangeLog:
* constraint.cc (get_normalized_constraints_from_decl): Always
look up constraints using the most general template.
* decl.c (grokdeclarator): Set constraints on a static data
member template.
* pt.c (determine_specialization): Check constraints on a
variable template.
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/concepts-var-templ1.C: New test.
* g++.dg/cpp2a/concepts-var-templ1a.C: New test.
* g++.dg/cpp2a/concepts-var-templ1b.C: New test.
(cherry picked from commit 2e2e65a46d2674bed53afd211493876ee2b79453)
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