https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105223
--- Comment #2 from Patrick Palka <ppalka at gcc dot gnu.org> ---
The implicitly declared ServiceReference<int>::operator= members lack a
TEMPLATE_INFO, but filter_memfn_lookup expects it (along with all other
non-template member functions from the instantiated class) to have one.
Not sure what the best solution here is, but we can at least work around this
by making filter_memfn_lookup tolerate missing TEMPLATE_INFO in this case:
gcc/cp/pt.cc | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/gcc/cp/pt.cc b/gcc/cp/pt.cc
index 78519562953..f359e596846 100644
--- a/gcc/cp/pt.cc
+++ b/gcc/cp/pt.cc
@@ -16404,6 +16404,13 @@ filter_memfn_lookup (tree oldfns, tree newfns, tree
newtype)
look in the old lookup set for the TEMPLATE_DECL from which
it was specialized. */
return visible_set.contains (DECL_TI_TEMPLATE (fn));
+ else if (!DECL_TEMPLATE_INFO (fn))
+ {
+ /* FN is an implicitly declared special member function and thus
+ could not have been in the old lookup set. */
+ gcc_checking_assert (DECL_ARTIFICIAL (fn) && DECL_DEFAULTED_FN (fn));
+ return false;
+ }
else
/* FN is a non-template member function from the current class;
look in the old lookup set for the FUNCTION_DECL from which
