Expanding comment for MSVC 2015 workaround.

23cbc2b7 · Ralf W. Grosse-Kunstleve · c51dec40 · 23cbc2b7
Commit 23cbc2b7 authored Feb 14, 2021 by Ralf W. Grosse-Kunstleve
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include/pybind11/cast.h
+2 -1

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--- a/include/pybind11/cast.h
+++ b/include/pybind11/cast.h
@@ -1393,7 +1393,8 @@ struct smart_holder_type_caster : smart_holder_type_caster_load<T>,
    // clang-format off

 #if defined(_MSC_VER) && _MSC_VER < 1910
-    // Working around MSVC 2015 bug.
+    // Working around MSVC 2015 bug. `const` sensitivity is lost.
+    // SMART_HOLDER_WIP: IMPROVABLE: make common code work with MSVC 2015.
    template <typename T_> using cast_op_type = detail::cast_op_type<T_>;
 #else
    template <typename T_>