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    CWG Issue 1187</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="1187"></A><H4>1187.
  
Problems in initialization example
</H4>
<B>Section: </B>6.10.3.2&#160; [<A href="https://wg21.link/basic.start.static">basic.start.static</A>]
 &#160;&#160;&#160;

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

 <B>Submitter: </B>Jason Merrill
 &#160;&#160;&#160;

 <B>Date: </B>2010-08-31<BR>


<P>[Voted into the WP at the March, 2011 meeting.]</P>



<P>The note in 6.10.3.2 [<A href="https://wg21.link/basic.start.static#3">basic.start.static</A>] paragraph 3 contains the
following example:</P>

<PRE>
  inline double fd() { return 1.0; }
  extern double d1;
  double d2 = d1;     //<SPAN CLASS="cmnt"> unspecified:</SPAN>
                      //<SPAN CLASS="cmnt"> may be statically initialized to </SPAN>0.0<SPAN CLASS="cmnt"> or</SPAN>
                      //<SPAN CLASS="cmnt"> dynamically initialized to </SPAN>1.0
  double d1 = fd();   //<SPAN CLASS="cmnt"> may be initialized statically to </SPAN>1.0
</PRE>

<P>The comment for <TT>d2</TT> overlooks the third possibility: if
both <TT>d1</TT> and <TT>d2</TT> are dynamically initialized, <TT>d2</TT>
will be initialized to <TT>0</TT>.</P>

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

<P>Change the comments in the example in 6.10.3.2 [<A href="https://wg21.link/basic.start.static#3">basic.start.static</A>] paragraph 3
as follows:</P>

<PRE>
  inline double fd() { return 1.0; }
  extern double d1;
  double d2 = d1;     //<SPAN CLASS="cmnt"> unspecified:</SPAN>
                      //<SPAN CLASS="cmnt"> may be statically initialized to </SPAN>0.0<SPAN CLASS="cmnt"> or</SPAN>
                      //<SPAN CLASS="cmnt"> dynamically initialized <DEL>to </DEL></SPAN><DEL>1.0</DEL> <INS><SPAN CLASS="cmnt">to </SPAN>0.0<SPAN CLASS="cmnt"> if </SPAN>d1<SPAN CLASS="cmnt"> is dynamically initialized, or </SPAN>1.0<SPAN CLASS="cmnt"> otherwise</SPAN></INS>
  double d1 = fd();   //<SPAN CLASS="cmnt"> may be initialized statically <INS>or dynamically</INS> to </SPAN>1.0
</PRE>

<P>(The note should also be in running text following the bulleted list
instead of appearing as a bulleted item, as well.)</P>

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