Enforce using nullptr for C++ code

The compiler can help out in making sure we are consistent in our use of
nullptr rather than NULL.

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b9482b1bfc53f4d286766709a5a8375480f881d5..1cb62c117319dd19eacbc8d5dc4474375af75e27 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -76,6 +76,7 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")
 # Tell the compiler to be stringent
 set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -Wformat=2 -Wvla")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -Wformat=2 -Wvla")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wzero-as-null-pointer-constant")
 # Make sure we catch these issues whilst developing
 IF(CMAKE_BUILD_TYPE MATCHES Debug)
   set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Werror")