extend.texi: index __auto_type

gcc/ChangeLog:

	* doc/extend.texi: Add @cindex on __auto_type.

diff --git a/gcc/doc/extend.texi b/gcc/doc/extend.texi
index 093bd97ba4de1d71b0b0a1a7715ab6e66969dd77..ec9ffa3c86e8a4114be3474b36dd2163f163678e 100644 (file)
--- a/gcc/doc/extend.texi
+++ b/gcc/doc/extend.texi
@@ -843,6 +843,7 @@ Thus, @code{array (pointer (char), 4)} is the type of arrays of 4
 pointers to @code{char}.
 @end itemize
 
+@cindex @code{__auto_type} in GNU C
 In GNU C, but not GNU C++, you may also declare the type of a variable
 as @code{__auto_type}.  In that case, the declaration must declare
 only one variable, whose declarator must just be an identifier, the