From cc0489f6b5a396ac0d26e5e73bdeced82805c1a2 Mon Sep 17 00:00:00 2001
From: Simon Richter <Simon.Richter@hogyros.de>
Date: Thu, 18 Oct 2018 20:24:01 +0200
Subject: [PATCH] Disallow variable length arrays

This is a gcc/clang extension, not standard C++
---
 CMakeLists.txt | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 057125e634..b6161167cf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -209,6 +209,13 @@ if( CMAKE_COMPILER_IS_GNUCXX OR CMAKE_CXX_COMPILER_ID MATCHES "Clang" )
     if(COMPILER_SUPPORTS_WSUGGEST_OVERRIDE)
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wsuggest-override")
     endif()
+
+    CHECK_CXX_COMPILER_FLAG("-Wvla" COMPILER_SUPPORTS_WVLA)
+
+    if(COMPILER_SUPPORTS_WVLA)
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=vla")
+    endif()
+
 endif()