Hi Erik, > How is [treating specific warnings as errors] supposed to be done? Enable just the warnings you want to be treated as errors and use the -Werror switch. I do not believe* there is the ability to promote specific warnings (other than -Werror-implicit-function-declaration) to be treated as errors. That would be a nice enhancement to GCC. HTH, --Eljay * Always the possibility that I may be mistaken.