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    copied!<p>It looks like a compiler/linker bug: no C++ code should ever cause segfaults in the compiler/linker.</p> <p>By the way, how do you get this code to compile? How is <code>pointer</code> declared?</p> <pre><code>Class1Tuple tup("str", pointer); ClassTupleItem(tup); // works fine since I used Class1Tuple Class6Tuple tup2("str", pointer); ClassTupleItem(tup2); // causes a segfault. </code></pre> <p>If the classes are declared like this, for <code>Class1Tuple</code>, <code>pointer</code> should be a <code>shared_ptr&lt;Class1&gt;</code>, and for <code>Class6Tuple</code> it should be of a different type, <code>shared_ptr&lt;Class6&gt;</code>.</p> <pre><code>struct Class1 { typedef boost::shared_ptr&lt;Class1&gt; Ptr; /* ... */ }; /* ... */ struct Class6 { typedef boost::shared_ptr&lt;Class6&gt; Ptr; /* ... */ }; </code></pre> <p><strong>Edit:</strong> The following code compiles correctly with g++ 3.3.6. I am not able to test it on gcc 3.3.3 and SUSE Linux at the moment. Please try to compile this and see if the linker still gives a segfault.</p> <pre><code>#include &lt;boost/shared_ptr.hpp&gt; #include &lt;boost/tuple/tuple.hpp&gt; #include &lt;boost/variant.hpp&gt; #include &lt;string&gt; struct Class1 { typedef boost::shared_ptr&lt;Class1&gt; Ptr; /* .... */ }; struct Class2 { typedef boost::shared_ptr&lt;Class2&gt; Ptr; /* .... */ }; struct Class3 { typedef boost::shared_ptr&lt;Class3&gt; Ptr; /* .... */ }; struct Class4 { typedef boost::shared_ptr&lt;Class4&gt; Ptr; /* .... */ }; struct Class5 { typedef boost::shared_ptr&lt;Class5&gt; Ptr; /* .... */ }; struct Class6 { typedef boost::shared_ptr&lt;Class6&gt; Ptr; /* .... */ }; struct Class7 { typedef boost::shared_ptr&lt;Class7&gt; Ptr; /* .... */ }; typedef boost::tuple&lt;std::string, Class1::Ptr&gt; Class1Tuple; typedef boost::tuple&lt;std::string, Class2::Ptr&gt; Class2Tuple; typedef boost::tuple&lt;std::string, Class3::Ptr&gt; Class3Tuple; typedef boost::tuple&lt;std::string, Class4::Ptr&gt; Class4Tuple; typedef boost::tuple&lt;std::string, Class5::Ptr&gt; Class5Tuple; typedef boost::tuple&lt;std::string, Class6::Ptr&gt; Class6Tuple; typedef boost::tuple&lt;std::string, Class7::Ptr&gt; Class7Tuple; typedef boost::variant&lt; Class1Tuple, Class2Tuple, Class3Tuple, Class4Tuple, Class5Tuple, Class6Tuple, Class7Tuple &gt; ClassTupleItem; int main() { Class1::Ptr pointer; Class1Tuple tup("str", pointer); (ClassTupleItem(tup)); // Temporary object ClassTupleItem item(tup); Class6::Ptr pointer2; Class6Tuple tup2("str", pointer2); (ClassTupleItem(tup2)); // Temporary object ClassTupleItem item2(tup2); } </code></pre>
 

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