[Boost-bugs] [Boost C++ Libraries] #4127: warning break strict-aliasing rules

Subject: [Boost-bugs] [Boost C++ Libraries] #4127: warning break strict-aliasing rules
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-04-20 18:07:58

#4127: warning break strict-aliasing rules
 Reporter: anonymous | Owner: pdimov
     Type: Bugs | Status: new
Milestone: Boost 1.43.0 | Component: smart_ptr
  Version: Boost Development Trunk | Severity: Problem
 Keywords: warning strict-aliasing |
 under x86_64, using g++ 4.4.1 with '-W -Wall -O3' , when trying to compile
 the code below
 #include "boost/make_shared.hpp"
 #include <iostream>

 int main(void)
   boost::shared_ptr<std::string> x =
 boost::make_shared<std::string>("hello, world!");
   std::cout << *x;
 [/code] (copied from make_shared doc)

 I get the folowing warnings:
>>> boost/smart_ptr/make_shared.hpp:52: warning: dereferencing type-punned
 pointer will break strict-aliasing rules

Ticket URL: <https://svn.boost.org/trac/boost/ticket/4127>
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