P3923R0: Re NB US 126-189 (C++26 CD).

Fixes NB US 126-189 (C++26 CD).

Author: eisenwave

source/meta.tex

@@ -6699,6 +6699,12 @@
 \pnum
 \returns
 \tcode{class_type}.
+
+\pnum
+\remarks
+If $C$ is a specialization of a templated class and
+it has not been instantiated,
+$C$ is treated as an explicit specialization.
 \end{itemdescr}
 
 \rSec2[meta.reflection.traits]{Reflection type traits}