core/com.nokia.carbide.cpp.compiler.doc.user/html/pragmas/p_defer_defarg_parsing.htm
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<title>defer_defarg_parsing</title>
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<h3>defer_defarg_parsing</h3>
<p> Defers the parsing of default arguments in member functions.</p>
<h5>Syntax</h5>
<p class="code">#pragma defer_defarg_parsing on | off
</p>
<h5>Targets</h5>
All platforms.<br />
<h5>Remarks</h5>
<p>To be accepted as valid, some default expressions with template arguments will require additional parentheses. For example, the following source code generates an error:</p>
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<p>template<typename T,typename U> struct X { T t; U u; };</p>
<p>struct Y {<br />
// the following line is not accepted, and generates <br />
// an error with defer_defarg_parsing on<br />
void f(X<int,int> = X<int,int>());<br />
};</p>
</div>
<p>While this version will not:</p>
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<p>template<typename T,typename U> struct X { T t; U u; }; </p>
<p>struct Y {<br />
// following line is OK, <br />
// if default argument is parenthesized<br />
void f(X<int,int> = (X<int,int>()) );<br />
};</p>
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<p>This pragma does not correspond to any panel setting. To check this setting, use <span class="code">__option (defer_defarg_parsing)</span>. The default setting is on.<br />
</p>
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