[Boost-users] Including Xutil.h on Fedora breaks BOOST_FOREACH

Subject: [Boost-users] Including Xutil.h on Fedora breaks BOOST_FOREACH
From: Tron Thomas (tron.thomas_at_[hidden])
Date: 2009-05-22 16:02:26

Compiling this:

#include <X11/Xutil.h>
#include <boost/shared_ptr.hpp>
#include <vector>
#include <cstdlib>
#include <boost/foreach.hpp>
#include <iostream>
using std::ostream;

class Value
{
public:
explicit Value(int amount) : m_amount(amount) {}
void WriteTo(ostream& stream) const { stream << m_amount; }
private:
int m_amount;
};

ostream& operator <<(ostream& stream, const Value& value)
{
value.WriteTo(stream);
return stream;
}

int main()
{
typedef boost::shared_ptr<Value> ValuePtr;

std::vector<ValuePtr> valueBuffer;

for(int count = 0; 10 > count; ++count){
valueBuffer.push_back(ValuePtr(new Value(::rand())));
}

BOOST_FOREACH(ValuePtr value, valueBuffer){
std::cout << *value << std::endl;
}

return 0;
}

on Fedora 10 (Intel) produces error output like:

/usr/include/boost/foreach.hpp:223: error: expected 
nested-name-specifier before ‘int’
/usr/include/boost/foreach.hpp:223: error: two or more data types in 
declaration of ‘parameter’
/usr/include/boost/foreach.hpp:224: error: default template arguments 
may not be used in function templates
Value.cpp: In function ‘int main()’:
Value.cpp:34: error: no matching function for call to 
‘not_(boost::is_array<std::vector<boost::shared_ptr<Value>, 
std::allocator<boost::shared_ptr<Value> > > >*)’
Value.cpp:34: error: no matching function for call to 
‘not_(boost::foreach::is_noncopyable<std::vector<boost::shared_ptr<Value>, 
std::allocator<boost::shared_ptr<Value> > > >*)’
Value.cpp:34: error: no matching function for call to 
‘not_(boost::is_array<std::vector<boost::shared_ptr<Value>, 
std::allocator<boost::shared_ptr<Value> > > >*)’
Value.cpp:34: error: no matching function for call to 
‘not_(boost::foreach::is_noncopyable<std::vector<boost::shared_ptr<Value>, 
std::allocator<boost::shared_ptr<Value> > > >*)’
Value.cpp:34: error: no matching function for call to 
‘not_(boost::is_array<std::vector<boost::shared_ptr<Value>, 
std::allocator<boost::shared_ptr<Value> > > >*)’
Value.cpp:34: error: no matching function for call to 
‘not_(boost::foreach::is_noncopyable<std::vector<boost::shared_ptr<Value>, 
std::allocator<boost::shared_ptr<Value> > > >*)’

If the first included header file is removed from the code, it builds 
successfully.
Even though the code in this example doesn't technically need that first 
header file included, it is representative of code that does.
What is needed so this code can build successfully while including all 
the header files?