What does 'inline' mean?

[Manu]

On Sat, Jun 13, 2020 at 2:05 PM Walter Bright via Digitalmars-d <
digitalmars-d at puremagic.com> wrote:

> On 6/12/2020 8:25 PM, Andrei Alexandrescu wrote:
> > On 6/12/20 8:54 PM, Walter Bright wrote:
> >> On 6/12/2020 5:17 PM, Andrei Alexandrescu wrote:
> >>> Not sure about that part - if linkage was static by means of using the
> >>> "static" keyword, multiple definitions may not be merged. (I may be
> wrong,
> >>> please correct me.) Consider:
> >>>
> >>> static inline int fun() {
> >>>      static int x;
> >>>      return ++x;
> >>> }
> >>>
> >>> In C++, each translation unit containing a definition of fun() will
> have a
> >>> distinct address for x. I don't see how the bodies of those functions
> can be
> >>> merged.
> >>
> >> They are not merged in D, for the simple reason that ModuleA.fun() and
> >> ModuleB.fun() will have different (mangled) names presented to the
> linker.
> >
> > For D the question is if they are merged if the function is defined in a
> .di
> > file and imported in two other modules.
>
> If the di file is mentioned on the command line to the compiler


It's not, that's literally the point of a .di file.


> , yes (1)
> instance of it appears in the executable. Otherwise, (0) instances of it
> appear
> in the executable. There are never 2 or more instances in the executable.
>

Exactly. And this is not a useful design.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.puremagic.com/pipermail/digitalmars-d/attachments/20200613/1fa2680e/attachment.htm>