From 6c5948e0d0d84102b05eafc53bfa1ed67096d09e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Fri, 19 Jul 2019 18:06:10 +0200
Subject: [PATCH] Restrict the Image::Image(T) constructor a bit.

Otherwise it makes some compiler errors *insane*.
---
 src/Magnum/Image.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Magnum/Image.h b/src/Magnum/Image.h
index 4073f0262..7426b0a28 100644
--- a/src/Magnum/Image.h
+++ b/src/Magnum/Image.h
@@ -291,7 +291,12 @@ template<UnsignedInt dimensions> class Image {
          * Equivalent to calling @ref Image(PixelStorage, T) with
          * default-constructed @ref PixelStorage.
          */
-        template<class T> /*implicit*/ Image(T format) noexcept: Image{{}, format} {}
+        template<class T
+            #ifndef DOXYGEN_GENERATING_OUTPUT
+            /* Otherwise this catches too much, resulting in weird errors */
+            , class = typename std::enable_if<std::is_enum<T>::value || std::is_integral<T>::value>::type
+            #endif
+            > /*implicit*/ Image(T format) noexcept: Image{{}, format} {}
 
         /** @brief Copying is not allowed */
         Image(const Image<dimensions>&) = delete;