From 6724f8c0523ad4b14ea04dc2977013f6ff8c7589 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Sun, 2 Feb 2020 01:12:28 +0100
Subject: [PATCH] Work around MSVS 2012 bug with handling of nullptr

Avoid error C2180 given by this compiler for if statements with
controlling expression of type nullptr_t.
---
 include/wx/wxcrt.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/wx/wxcrt.h b/include/wx/wxcrt.h
index e8bdc628c2..9f17dc759b 100644
--- a/include/wx/wxcrt.h
+++ b/include/wx/wxcrt.h
@@ -858,7 +858,8 @@ template<> struct wxStrtoxCharType<std::nullptr_t>
 template<typename T>
 inline double wxStrtod(const wxString& nptr, T endptr)
 {
-    if (endptr)
+    // Explicit comparison with 0 required when using T=nullptr with MSVS 2012.
+    if (endptr != 0)
     {
         // note that it is important to use c_str() here and not mb_str() or
         // wc_str(), because we store the pointer into (possibly converted)