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[Bug tree-optimization/51446] -fno-trapping-math generates NaN constant with different sign
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 07 Dec 2011 12:51:39 +0000
- Subject: [Bug tree-optimization/51446] -fno-trapping-math generates NaN constant with different sign
- Auto-submitted: auto-generated
- References: <bug-51446-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51446
--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-12-07 12:51:39 UTC ---
I get
-2251799813685248 9221120237041090560
vs.
-2251799813685248 -2251799813685248
the subtraction is carried out with 4.7, also with 4.6.2.