[Issue 3882] Unused result of pure functions

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=3882



--- Comment #12 from bearophile_hugs at eml.cc 2014-03-01 15:20:21 PST ---
(In reply to comment #11)

> This pull request adds warnings for unused non-void returns of calls to
> strictly pure function calls.

Is adding a cast(void) before the function call able to disable this warning?
If this is false then perhaps it's worth adding this sub-feature and then I
suggest a shorter and more useful warning message like:

Warning: Function call to pure function foo() discards return value, prepend a
cast(void) if intentional.


> For this to work Phobos had to altered in handful
> of places were non-void returns were not captured.

Some user code will need similar changes...

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