<HTML>
<HEAD>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<TITLE>
    CWG Issue 2754</TITLE>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<STYLE TYPE="text/css">
  INS { text-decoration:none; font-weight:bold; background-color:#A0FFA0 }
  .INS { text-decoration:none; background-color:#D0FFD0 }
  DEL { text-decoration:line-through; background-color:#FFA0A0 }
  .DEL { text-decoration:line-through; background-color: #FFD0D0 }
  @media (prefers-color-scheme: dark) {
    HTML { background-color:#202020; color:#f0f0f0; }
    A { color:#5bc0ff; }
    A:visited { color:#c6a8ff; }
    A:hover, a:focus { color:#afd7ff; }
    INS { background-color:#033a16; color:#aff5b4; }
    .INS { background-color: #033a16; }
    DEL { background-color:#67060c; color:#ffdcd7; }
    .DEL { background-color:#67060c; }
  }
  SPAN.cmnt { font-family:Times; font-style:italic }
</STYLE>
</HEAD>
<BODY>
<P><EM>This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21
  Core Issues List revision 118b.
  See http://www.open-std.org/jtc1/sc22/wg21/ for the official
  list.</EM></P>
<P>2025-09-28</P>
<HR>
<A NAME="2754"></A><H4>2754.
  
Using *this in explicit object member functions that are coroutines
</H4>
<B>Section: </B>9.6.4&#160; [<A href="https://wg21.link/dcl.fct.def.coroutine">dcl.fct.def.coroutine</A>]
 &#160;&#160;&#160;

 <B>Status: </B>CD7
 &#160;&#160;&#160;

 <B>Submitter: </B>Christof Meerwald
 &#160;&#160;&#160;

 <B>Date: </B>2023-06-23<BR>


<P>[Accepted as a DR at the November, 2023 meeting.]</P>

<P>Subclause 9.6.4 [<A href="https://wg21.link/dcl.fct.def.coroutine#4">dcl.fct.def.coroutine</A>] paragraph 4 specifies:</P>

<BLOCKQUOTE>

In the following, pi is an lvalue of type Pi , where p1 denotes the
object parameter and pi+1 denotes the ith non-object function
parameter for a non-static member function, and pi denotes the ith
function parameter otherwise. For a non-static member function, q1 is
an lvalue that denotes <TT>*this</TT>; any other qi is an lvalue that denotes
the parameter copy corresponding to pi , as described below.

</BLOCKQUOTE>

<P>An explicit object member function is a non-static member function,
but there is no <TT>this</TT>.</P>

<P><B>Proposed resolution (approved by CWG 2023-07-14):</B></P>

<P>Change in 9.6.4 [<A href="https://wg21.link/dcl.fct.def.coroutine#4">dcl.fct.def.coroutine</A>] paragraph 4 as follows:</P>

<BLOCKQUOTE>

In the following, pi is an lvalue of type Pi , where p1 denotes the
object parameter and pi+1 denotes the ith non-object function
parameter for <DEL>a non-static</DEL> <INS>an implicit object</INS>
member function, and pi denotes the ith function parameter
otherwise. For <DEL>a non-static</DEL> <INS>an implicit object</INS>
member function, q1 is an lvalue that denotes <TT>*this</TT>; any
other qi is an lvalue that denotes the parameter copy corresponding to
pi, as described below.

</BLOCKQUOTE>

<BR><BR>
</BODY>
</HTML>
