Am 26.08.2015 um 11:14 schrieb Bostjan Mihoric:
> On Tue, Aug 25, 2015 at 7:14 PM, Christoph Lipka
> <christ...@lipka-koeln.de> wrote:
>> Am 25.08.2015 um 18:36 schrieb Bostjan Mihoric:
>> [...]
>>
>> /// @file
>>
>> /// My typedef.
>> typedef void VOID;
>>
>> /// My simple function. Details.
>> extern VOID Function(VOID);
>> [...]
[...]
> Agreed, at least when JAVADOC_AUTOBRIEF is specifically enabled it
> should work like that. But what I still don't understand, why does
> Doxygen then not emit warnings? Surely, having just a brief
> description does not also mean "and ignore parameters and return
> type"?

That might depend on whether you have "|WARN_IF_DOC_ERROR" and/or
"|||WARN_NO_PARAMDOC" |enabled. (Also, make sure you don't have
"EXTRACT_ALL" enabled.)|

> And why does the VOID redefine not work?

It appears that Doxygen's strategy for warning about undocumented
parameters or return types just doesn't expect anyone to ever typedef
any other type as "void", and thus doesn't bother to test whether the
return type and/or sole parameter's type is _equivalent_ with "void",
but rather just tests whether it _is_ "void".

This can be considered a bug, or it can be considered a feature: If you
do indeed want to indicate that your function does not return anything
at all, then why by all means do you not simply use the keyword "void"
(or leave the parameter list empty in case of C++)? On the other hand,
there might be cases where you may want some function to take or return
a parameter of a type that may or may not be configured to hold an
actual value (like, say, a type representing an error code, which may be
configured to be equivalent to "void" in an environment where other
means of error signalling, like throwing an exception, is used).  In
that case, you'd probably want Doxygen to warn you if you forget to
document that return value or parameter, even if it _may_ be configured
to be equivalent to "void" by default.


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