[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



--- Comment #9 from bearophile_hugs at eml.cc 2011-06-13 14:31:09 PDT ---
(In reply to comment #8)
> https://github.com/D-Programming-Language/dmd/pull/121
> 
> This adds the error message:
> testx.d(4): Error: expression with no side effects used with void return
> 
> Good enough?

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'.

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