Accept __has_feature(__feature__) as a synonym for __has_feature(feature) (and
likewise for __has_extension). Patch by Jonathan Sauer!
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@151445 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/docs/LanguageExtensions.html b/docs/LanguageExtensions.html
index 2471c60..cdd1979 100644
--- a/docs/LanguageExtensions.html
+++ b/docs/LanguageExtensions.html
@@ -228,6 +228,11 @@
<p>The feature tag is described along with the language feature below.</p>
+<p>The feature name or extension name can also be specified with a preceding and
+following <code>__</code> (double underscore) to avoid interference from a macro
+with the same name. For instance, <code>__always_inline__</code> can be used
+instead of <code>always_inline</code>.</p>
+
<!-- ======================================================================= -->
<h3><a name="__has_attribute">__has_attribute</a></h3>
<!-- ======================================================================= -->