Delphi tip of the day: {$WARN UNSUPPORTED_CONSTRUCT ERROR}

Delphi tip of the day:

{$WARN UNSUPPORTED_CONSTRUCT ERROR}

It will throw a compiler error when you use an attribute that isn’t defined as the above [WayBack] turns a warning into an error as normally [WayBack] UNSUPPORTED_CONSTRUCT is only a warning.

Which means that this code now fails:

type
  TmyClass = class
    [djhgfskdhgks]
    procedure One;
  end;

Thanks [WayBack] +Agustin Ortu for posting this tip!

–jeroen

via:

• [WayBack] I am so crossed—-I’ve spent already an hour to figure out why my custom attributes don’t work and realised that the compiler doesn’t check whether the… – Jeroen Wiert Pluimers – Google+
• [WayBack] I am so crossed—-I’ve spent already an hour to figure out why my custom attributes don’t work and realised that the compiler doesn’t check whether the… – John Kouraklis – Google+