[Bug tree-optimization/23603] VRP does not say range for a in a = b == c; is [0,1]

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-28 17:22 -------
The fix would be instead of setting the range to varrying in extract_range_from_comparison, set it to 
[0,1].

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23603