PATCH to doc/c-tree.texi

[Gabriel Dos Reis]

The old extension of named-return-variable was gone a long time ago.
This patch removes its remainings from the doc.
Applied to mainline.

-- Gaby
2005-12-05  Gabriel Dos Reis  <gdr@integrable-solutions.net>

	* doc/c-tree.texi (Function Bodies): Remove description of
	RETURN_INIT.

*** doc/c-tree.texi	(revision 108078)
--- doc/c-tree.texi	(local)
*************** This predicate holds if the function an 
*** 1477,1483 ****
  @findex IF_COND
  @findex THEN_CLAUSE
  @findex ELSE_CLAUSE
- @tindex RETURN_INIT
  @tindex RETURN_STMT
  @findex RETURN_EXPR
  @tindex SUBOBJECT
--- 1477,1482 ----
*************** statement can be obtained with the @code
*** 1720,1741 ****
  @code{IDENTIFIER_NODE} giving the name of the label can be obtained from
  the @code{LABEL_DECL} with @code{DECL_NAME}.
  
- @item RETURN_INIT
- 
- If the function uses the G++ ``named return value'' extension, meaning
- that the function has been defined like:
- @smallexample
- S f(int) return s @{@dots{}@}
- @end smallexample
- then there will be a @code{RETURN_INIT}.  There is never a named
- returned value for a constructor.  The first argument to the
- @code{RETURN_INIT} is the name of the object returned; the second
- argument is the initializer for the object.  The object is initialized
- when the @code{RETURN_INIT} is encountered.  The object referred to is
- the actual object returned; this extension is a manual way of doing the
- ``return-value optimization''.  Therefore, the object must actually be
- constructed in the place where the object will be returned.
- 
  @item RETURN_STMT
  
  Used to represent a @code{return} statement.  The @code{RETURN_EXPR} is
--- 1719,1724 ----