Comeau online compiler and std::sqrt

I would like an opinion concerning this program:

Code:

#include <cmath>

int main()
{
    double x = 0.0;
    x = std::sqrt(x);
}

The MinGW port of g++ 3.4.5 finds no fault with the above program. The Comeau online compiler, on the other hand, fails to compile it, citing this error:

Code:

MODE:strict errors C++ C++0x_extensions

"ComeauTest.c", line 6: error: more than one instance of overloaded function
          "std::sqrt" matches the argument list, the choices that match are:
            function "std::sqrt(float)"
            function "std::sqrt(long double)"
            The argument types that you used are: (double)
      x = std::sqrt(x);
          ^

1 error detected in the compilation of "ComeauTest.c".

Checking the C++ Standard, I see:

Originally Posted by C++03 Section 26.5 Paragraph 5

In addition to the double versions of the math functions in <cmath>, C++ adds float and long double overloaded versions of these functions, with the same semantics.

I conclude then that the error is due to a missing double sqrt(double) version of std::sqrt, and thus is a bug in the standard library implementation used by the Comeau online compiler. Am I correct?

You are correct.