notes@hcx1.UUCP (11/20/86)
Although it is true that your program is syntactically correct, according to ARM 4.1.3.18: "If the prefix is the name of an enclosing subprogram or accept statement and if there is more than one visible enclosing subprogram or accept statement of this name, the expanded name is ambiguous, independently of the selector." In the case of an operator symbol, there will ALWAYS be another visible enclosing subprogram with the same name, therefore the chosen selected component is ambiguous.