Template instantiation results in a link failure

[Sam Varshavchik <mrsam at courier-mta dot com>]

After updating to gcc 4.6.0, the following code fails to link:

#include <algorithm>
#include <iterator>
#include <iostream>

int main()
{
	std::find(std::istreambuf_iterator<char>(std::cin),
		  std::istreambuf_iterator<char>(), '\n');
	return 0;
}

The link failure is:
t.C:
(largish mangle): undefined reference to `std::basic_streambuf<char,  
std::char_traits<char> >::__safe_gbump(long)'

I see the innards that are responsible for this error, what I can't see is  
what I'm doing wrong here.

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