[Bug target/47473] [4.5/4.6 Regression] Incorrect computation with complex numbers when using -std=c99

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47473

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
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                 CC|                            |jakub at gcc dot gnu.org

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-01-26 13:42:50 UTC ---
Unincluded testcase:
int
main (void)
{
 long double _Complex w = 0.2L - 0.3iL;
  w = w * (0.3L - (0.0F + 1.0iF) * 0.9L);
  __builtin_printf("(0.2 - I*0.3)*(0.3 - I*0.9) = (%g, %g)\n", (double)
__real__ w, (double) __imag__ w);
  return 0;
}

On x86_64-linux the results look correct.
Using
w = w * (0.3L - 0.9iL);
instead works too.  And the results I get don't depend on libgcc version used
(4.4 behaves like 4.6).