doc: Add @cindex to symver attribute

When looking at the symver attr documentation in html, I found there is no
name to refer to for it.

2020-08-04  Jakub Jelinek  <jakub@redhat.com>

	* doc/extend.texi (symver): Add @cindex for symver function attribute.

diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 0fb7e27..57a52ad 100644 (file)
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -3723,6 +3723,7 @@ Function Attributes}, @ref{PowerPC Function Attributes},
 for details.
 
 @item symver ("@var{name2}@@@var{nodename}")
+@cindex @code{symver} function attribute
 On ELF targets this attribute creates a symbol version.  The @var{name2} part
 of the parameter is the actual name of the symbol by which it will be
 externally referenced.  The @code{nodename} portion should be the name of a