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[Bug middle-end/34130] [4.1/4.2/4.3 Regression] the builtin abs() gives wrong result when used in some expression
- From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 17 Nov 2007 12:46:12 -0000
- Subject: [Bug middle-end/34130] [4.1/4.2/4.3 Regression] the builtin abs() gives wrong result when used in some expression
- References: <bug-34130-15375@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #1 from rguenth at gcc dot gnu dot org 2007-11-17 12:46 -------
Confirmed.
int foo(int i)
{
return -2*__builtin_abs(i-2);
}
get's folded to
return ABS_EXPR <(2 - i) * 2>;
doh.
--
rguenth at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Component|c |middle-end
Ever Confirmed|0 |1
Keywords| |wrong-code
Known to fail| |3.3.6 3.4.6 4.1.3 4.2.2
| |4.3.0
Known to work| |2.95.4
Last reconfirmed|0000-00-00 00:00:00 |2007-11-17 12:46:11
date| |
Summary|the builtin abs() gives |[4.1/4.2/4.3 Regression] the
|wrong result when used in |builtin abs() gives wrong
|some expression |result when used in some
| |expression
Target Milestone|--- |4.2.3
Version|unknown |4.2.1
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34130