[Issue 3746] Misleading error message "OP has no effect in expression XXX), in void function

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=3746


Don <clugdbug at yahoo.com.au> changed:

           What    |Removed                     |Added
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                 CC|                            |clugdbug at yahoo.com.au


--- Comment #12 from Don <clugdbug at yahoo.com.au> 2011-06-14 05:19:10 PDT ---
(In reply to comment #10)
> (In reply to comment #9)
> >
> > I don't understand. Elsewhere I have a bug report that asks for a new error
> > message if you don't use the result of a pure function.
> > But this bug report just asks for a better error message in the situation of
> > using "return x;" in a void function. So I expected an error message like:
> > 
> > foo.d(20): Error: a void function can't return 'int'.
> 
> Returning an int expression from a void function is perfectly legal, so long as
> the expression has side effects.  This is explicitly allowed by the spec.
> http://www.digitalmars.com/d/2.0/statement.html#ReturnStatement

Yes, but it was agreed on the newsgroup that this is a misfeature. (Andrei was
horrified about it). It should be disallowed.

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