From b0c4444687f8450f0ce28ec8caec02f4c71d4bfc Mon Sep 17 00:00:00 2001
From: Wenzel Jakob <wenzel.jakob@epfl.ch>
Date: Tue, 27 Sep 2016 11:23:52 +0200
Subject: [PATCH] format_descr constexpr tweak for MSVC by @jagerman (fixes
 #416)

---
 include/pybind11/common.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/include/pybind11/common.h b/include/pybind11/common.h
index 86af6993a..f1b023c91 100644
--- a/include/pybind11/common.h
+++ b/include/pybind11/common.h
@@ -443,9 +443,9 @@ PYBIND11_RUNTIME_EXCEPTION(reference_cast_error, PyExc_RuntimeError) /// Used in
 template <typename T, typename SFINAE = void> struct format_descriptor { };
 
 template <typename T> struct format_descriptor<T, detail::enable_if_t<std::is_integral<T>::value>> {
-    static constexpr const char value[2] =
-        { "bBhHiIqQ"[detail::log2(sizeof(T))*2 + (std::is_unsigned<T>::value ? 1 : 0)], '\0' };
-    static std::string format() { return value; }
+    static constexpr const char c = "bBhHiIqQ"[detail::log2(sizeof(T))*2 + std::is_unsigned<T>::value];
+    static constexpr const char value[2] = { c, '\0' };
+    static std::string format() { return std::string(1, c); }
 };
 
 template <typename T> constexpr const char format_descriptor<