diff --git a/gcc/cp/reflect.cc b/gcc/cp/reflect.cc
index bdeec2f0f38c..8acac9f8f0ea 100644
--- a/gcc/cp/reflect.cc
+++ b/gcc/cp/reflect.cc
@@ -3768,6 +3768,7 @@ eval_annotations_of (location_t loc, const constexpr_ctx *ctx, tree r,
       type = remove_const (type);
     }
 
+  r = maybe_get_first_fn (r);
   if (kind == REFLECT_BASE)
     {
       gcc_assert (TREE_CODE (r) == TREE_BINFO);
diff --git a/gcc/testsuite/g++.dg/reflect/annotations10.C b/gcc/testsuite/g++.dg/reflect/annotations10.C
new file mode 100644
index 000000000000..e78a7d46e5e7
--- /dev/null
+++ b/gcc/testsuite/g++.dg/reflect/annotations10.C
@@ -0,0 +1,12 @@
+// PR c++/123866
+// { dg-do compile { target c++26 } }
+// { dg-additional-options "-freflection" }
+
+#include <meta>
+
+struct A
+{
+  [[=1, =2]] void foo () {}
+};
+
+static_assert (annotations_of (^^A::foo).size () == 2);