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    CWG Issue 1106</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="1106"></A><H4>1106.
  
Need more detail in <TT>nullptr</TT> keyword description
</H4>
<B>Section: </B>5.13.8&#160; [<A href="https://wg21.link/lex.nullptr">lex.nullptr</A>]
 &#160;&#160;&#160;

 <B>Status: </B>C++11
 &#160;&#160;&#160;

 <B>Submitter: </B>DE
 &#160;&#160;&#160;

 <B>Date: </B>2010-08-02<BR><BR>


<P>[Voted into the WP at the November, 2010 meeting.]</P>

<A href="http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3296.html#DE3">N3092 comment
  DE&#160;3<BR></A>

<P>It is not sufficiently clear that <TT>std::nullptr_t</TT> is a
distinct type and neither a pointer type nor a pointer-to-member type.
Add a note in 5.13.8 [<A href="https://wg21.link/lex.nullptr">lex.nullptr</A>] stating that, preferably
with cross-references to the normative statements in 6.9 [<A href="https://wg21.link/basic.types">basic.types</A>].
</P>

<P><B>Proposed resolution (September, 2010):</B></P>

<P>Change 5.13.8 [<A href="https://wg21.link/lex.nullptr#1">lex.nullptr</A>] paragraph 1 as follows:</P>

<BLOCKQUOTE>

The pointer literal is the keyword <TT>nullptr</TT>. It is a prvalue
of type <TT>std::nullptr_t</TT>. <INS>[<I>Note:</I>
<TT>std::nullptr_t</TT> is a distinct type that is neither a pointer
type nor a pointer to member type; rather, a prvalue of this type is a
null pointer constant and can be converted to a null pointer value or
null member pointer value.  See 7.3.12 [<A href="https://wg21.link/conv.ptr">conv.ptr</A>] and
7.3.13 [<A href="https://wg21.link/conv.mem">conv.mem</A>]. &#8212;<I>end note</I>]</INS>

</BLOCKQUOTE>

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