Hi Rick, > Is there no way to get both the language features and the non- > standard library features? If you want strict C99, use: -std=c99 If you want C99 plus GNU extensions, use: -std:gnu99 (which is the default for C code, if not specified) What you can't do concurrently is have both "I only want strict C99 language features without extensions (-std:c99)" and "I want GNU extensions to C99 (-std:gnu99)". That'd be like having tea and no tea. You'd be one hoopy frood. HTH, --Eljay