provoke compile error:

"dereferencing type-punned pointer will break strict-aliasing rules [-Werror=strict-aliasing]"

Author: Matthias Loy

src/lib_json/CMakeLists.txt

@@ -7,6 +7,10 @@ ELSE(JSONCPP_LIB_BUILD_SHARED)
 ENDIF(JSONCPP_LIB_BUILD_SHARED)
 
 
+if( CMAKE_COMPILER_IS_GNUCXX )
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=strict-aliasing")
+endif( CMAKE_COMPILER_IS_GNUCXX )
+
 SET( JSONCPP_INCLUDE_DIR ../../include )
 
 SET( PUBLIC_HEADERS