[Bug middle-end/21781] real.c incorrectly values zero with a large exponent

[jsm28 at gcc dot gnu dot org]

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           What    |Removed                     |Added
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OtherBugsDependingO|                            |16620, 16989
              nThis|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21781