From 86b89e3b861dd67d5f998ae6d299f1ef553135e5 Mon Sep 17 00:00:00 2001
From: Abhinav Agarwal <abhinavagarwal1996@gmail.com>
Date: Tue, 16 Jun 2026 21:14:34 -0700
Subject: [PATCH] [func.wrap.ref.ctor] Restore class T in constant_wrapper
 constructor head

The out-of-line declaration of the function_ref constructor taking a
constant_wrapper<c, F> and a cv T* object pointer is headed with only
template<auto c, class F>, but its function parameter (cv T* obj) and
Constraints element (is-invocable-using<const F&, cv T*>) both name T,
which is then undeclared. The class synopsis in [func.wrap.ref.class]
already declares it as template<auto c, class F, class T>. Restore
class T to the out-of-line head so it matches the synopsis.
---
 source/utilities.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/source/utilities.tex b/source/utilities.tex
index f3e66eb429..02e3e7b7a6 100644
--- a/source/utilities.tex
+++ b/source/utilities.tex
@@ -15804,7 +15804,7 @@
 
 \indexlibraryctor{function_ref}%
 \begin{itemdecl}
-template<auto c, class F>
+template<auto c, class F, class T>
   constexpr function_ref(constant_wrapper<c, F> f, @\cv{}@ T* obj) noexcept;
 \end{itemdecl}