Hello Eric,<br><br>this code fragment will crash, since &#39;what&#39; uses iterators into the invalid string<br><br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; x::smatch what;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; if(x::regex_match(std::string(&quot;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; (some_type_ptr) xyz,&quot;), what, regex)) //string goes out of scope after this sentance
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; std::cout &lt;&lt; what[0] &lt;&lt; endl; // boom! string iterators are no longer valid<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; std::cout &lt;&lt; what[1] &lt;&lt; endl;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; }<br><br>May be there is a way to probit this kind of behaviour during the compilation or at least this can be stated in the docs...
<br><br><br><br>With Kind Regards,<br>Ovanes<br>