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Gecko/20041111 Firefox/1.0

Description of problem:
If I compiling the following code with "-O" flag or above the
resulting code
hangs forever. Code compiled with no optimization works as expected.

#include <complex>
#include <iostream>

int main()
{
  std::complex<double> z1(1.0/0.0,-1.0/0.0);
  std::complex<double> z2 = std::sqrt(z1);
  std::complex<double> z3 = std::sqrt(z2);

  std::cout
        << "z1: " << z1 << std::endl
        << "z2: " << z2 << std::endl
        << "z3: " << z3 << std::endl;
  return 0;
}


Version-Release number of selected component (if applicable):
gcc version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)

How reproducible:
Always

Steps to Reproduce:
1. Compile the code with "g++ -O"
2. Run resulting program
3.
    

Actual Results:  It hangs

Expected Results:  z1: (inf,-inf)
z2: (nan,nan)
z3: (nan,nan)


Additional info:

The code works as expected with gcc version 3.2.2 20030222 (Red Hat
Linux 3.2.2-5).