function-pointer

23 Jan 2017

      Hello,

 From ISO spec:

production:

expression                             can be variable-access

variable-access                    can be function-identified-variable

function-identified-variable is pointer-function '^'

pointer-function                    is function-access

function-access                   can be entire-function-access

entire-function-access        is function-designator

function-designator            is function-name

But:

function test : boolean;
begin
  test := false;
end;

procedure test1;
begin
  if  test^;
end;

generates the error "invalid type of argument of '^'"

function-identified-variable only appears on the rhs of the variable 
access production.  The expression test^ seems lexically correct.

I know I am wrong. But where? How is function-identified-variable used?

I really can't understand 6.8.6.4 Function-Identified-Variables of the 
spec. It sounds like a function-identified-variable is the return value 
of a pointer function. Is test^ a pointer function?

Regards,

Paul Isaacs

Paul Isaacs

Paul Isaacs

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