From 3658d2dfd48a764503f1bb43edabef0c8af4d8d9 Mon Sep 17 00:00:00 2001
From: Diego Biurrun <diego@biurrun.de>
Date: Mon, 11 Feb 2013 18:53:33 +0100
Subject: [PATCH] doc: developer: Add a note about reserved system name space
---
doc/developer.texi | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/doc/developer.texi b/doc/developer.texi
index b3e151347ec..a30cc9dfaa1 100644
--- a/doc/developer.texi
+++ b/doc/developer.texi
@@ -200,6 +200,14 @@ For externally visible symbols, each library has its own prefix. Check
the existing code and choose names accordingly.
@end itemize
+Furthermore, name space reserved for the system should not be invaded.
+Identifiers ending in @code{_t} are reserved by
+@url{http://pubs.opengroup.org/onlinepubs/007904975/functions/xsh_chap02_02.html#tag_02_02_02, POSIX}.
+Also avoid names starting with @code{__} or @code{_} followed by an uppercase
+letter as they are reserved by the C standard. Names starting with @code{_}
+are reserved at the file level and may not be used for externally visible
+symbols. If in doubt, just avoid names starting with @code{_} altogether.
+
@subsection Miscellaneous conventions
@itemize @bullet
@item
--
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