From a52d7861edfb5956de38ba80015c4dd0b596259b Mon Sep 17 00:00:00 2001
From: Allan Sandfeld Jensen <allan.jensen@qt.io>
Date: Tue, 13 Nov 2018 16:00:23 +0100
Subject: [PATCH] Fix compile issue with gcc 9

It appears messenne_twisters in the latest libstdc++ has one more
requirement before it is willing to construct with our
SystemGenerator struct as an sseq provider.

Change-Id: If38151d1fa6f40a80274acc26d9ed6b4ac6049fe
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
---

diff --git a/src/corelib/global/qrandom.cpp b/src/corelib/global/qrandom.cpp
index 23e5e49..03534cf 100644
--- a/src/corelib/global/qrandom.cpp
+++ b/src/corelib/global/qrandom.cpp
@@ -218,6 +218,7 @@
 #endif // Q_OS_WINRT
 
     static SystemGenerator &self();
+    typedef quint32 result_type;
     void generate(quint32 *begin, quint32 *end) Q_DECL_NOEXCEPT_EXPR(FillBufferNoexcept);
 
     // For std::mersenne_twister_engine implementations that use something
