1.1 KiB
1.1 KiB
[cpp.error]
15 Preprocessing directives [cpp]
15.9 Diagnostic directives [cpp.error]
A preprocessing directive of the form
error pp-tokensopt new-line
renders the program ill-formed.
A preprocessing directive of the form
warning pp-tokensopt new-line
requires the implementation to produce at least one diagnostic message for the preprocessing translation unit ([intro.compliance.general]).
Recommended practice: Any diagnostic message caused by either of these directives should include the specified sequence of preprocessing tokens.