Please immediately close this issue if I am mistaken.
I did a Google site search for:
extern System site:www.digitalmars.com
and
extern System site:www.digitalmars.com
Neither of these had hits in the formal documentation, only mailinglists. I suggest it be documented on the "Interfacing to C" page (http://www.d-programming-language.org/interfaceToC.html)
I'd be glad to make this enhancement if you like.
Comment #1 by cruxic — 2010-09-01T21:25:50Z
Correction: My second site search was against www.d-programming-language.org
Comment #2 by yao.gomez — 2012-02-06T19:44:09Z
The extern(System) attribute is briefly defined in: http://dlang.org/attribute.html#linkage
The relevant part of the paragraph is: "System is the same as Windows on Windows platforms, and C on other platforms."
Although brief, it correctly specifies the meaning of that attribute. I'm closing this bug report, but if you disagree, please reopen.