From e91fb2bbee30c9e4423747a25c875dbcd2473e34 Mon Sep 17 00:00:00 2001
From: Vadim Zeitlin <vadim@wxwidgets.org>
Date: Fri, 5 Dec 2014 22:18:13 +0000
Subject: [PATCH] Fix crash when using wxMessageBox before creating wxTheApp.

CheckIfCanBeUsedAsParent() used by wxMessageBox ctor shouldn't dereference
wxTheApp unconditionally, otherwise it's impossible to show a message box
before creating the application object or after destroying it without crashing.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@78233 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
---
 src/common/dlgcmn.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/common/dlgcmn.cpp b/src/common/dlgcmn.cpp
index 6eecb6d0ce..f08e19d175 100644
--- a/src/common/dlgcmn.cpp
+++ b/src/common/dlgcmn.cpp
@@ -189,7 +189,7 @@ wxDialogBase::GetParentForModalDialog(wxWindow *parent, long style) const
                     wxGetTopLevelParent(wxGetActiveWindow()));
 
     // and finally the application main window
-    if ( !parent )
+    if ( !parent && wxTheApp )
         parent = CheckIfCanBeUsedAsParent(wxTheApp->GetTopWindow());
 
     return parent;