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    CWG Issue 1481</TITLE>
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<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="1481"></A><H4>1481.
  
Increment/decrement operators with reference parameters
</H4>
<B>Section: </B>12.4.7&#160; [<A href="https://wg21.link/over.inc">over.inc</A>]
 &#160;&#160;&#160;

 <B>Status: </B>CD3
 &#160;&#160;&#160;

 <B>Submitter: </B>Ryou Ezoe
 &#160;&#160;&#160;

 <B>Date: </B>2012-03-20<BR>


<P>[Moved to DR at the April, 2013 meeting.]</P>



<P>The phrase in 12.4.7 [<A href="https://wg21.link/over.inc#1">over.inc</A>] paragraph 1,</P>

<BLOCKQUOTE>

a non-member function with one parameter of class or enumeration type

</BLOCKQUOTE>

<P>inadvertently excludes reference parameters, and in fact, no
mention of the type is necessary in light of 12.4 [<A href="https://wg21.link/over.oper#6">over.oper</A>] paragraph 6:
</P>

<BLOCKQUOTE>

An operator function shall either be a non-static member function or
be a non-member function and have at least one parameter whose type is
a class, a reference to a class, an enumeration, or a reference to an
enumeration.

</BLOCKQUOTE>

<P><B>Proposed resolution (August, 2012):</B></P>

<P>Change 12.4.7 [<A href="https://wg21.link/over.inc#1">over.inc</A>] paragraph 1 as follows:</P>

<BLOCKQUOTE>

The user-defined function called <TT>operator++</TT> implements the
prefix and postfix <TT>++</TT> operator. If this function is a member
function with no parameters, or a non-member function with one
parameter <DEL>of class or enumeration type</DEL>, it defines the prefix
increment operator ++ for objects of that type. If the function...

</BLOCKQUOTE>

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