[Bug middle-end/23195] [4.0/4.1 Regression] Using frexp with fabs produces negative result

[rguenth at gcc dot gnu dot org]

------- Additional Comments From rguenth at gcc dot gnu dot org  2005-08-02 12:13 -------
A safe fix would be to make tree_expr_nonnegative_p say don't-know for frexp.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23195