This compiler warning is generated if it is possible for the value of bRESULT to be undefined at the end of a macro.

 

In the example below, bResult is undefined if the function HolidayOfListOnDate returns false.

var
begin
    if HolidayOfListOnDate('a', n_TokenDate)
        bRESULT = true
    endif
end

Usually this type of warning occurs using branching without specifying what happens in the else case.

 

There are 2 way to address this warning, using the above example:

var
begin
   bRESULT = false
   if HolidayOfListOnDate('a', n_TokenDate)
       bRESULT = true
   endif
end

or alternatively, and more simply:

var
begin
   bRESULT = HolidayOfListOnDate('a', n_TokenDate)
end

Note that you should also include an else statement in switch statements.

 

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Topic 110124, last updated on 18-Apr-2020