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From: "baldrick at free dot fr" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug tree-optimization/26797] [4.2 Regression] ACATS c35507m cd2a23e cxh1001 failures
Date: Thu, 23 Mar 2006 13:19:00 -0000 [thread overview]
Message-ID: <20060323131954.25002.qmail@sourceware.org> (raw)
In-Reply-To: <bug-26797-7210@http.gcc.gnu.org/bugzilla/>
------- Comment #3 from baldrick at free dot fr 2006-03-23 13:19 -------
I've had a look at c35507m. I think it's a front-end bug. The problem occurs
in this type support subprogram:
C35507M.CHARRP (A, F)
{
if ((system__unsigned_types__unsigned) A - 4 <= 1)
{
return (integer) ((system__unsigned_types__unsigned) A - 4);
}
else
{
if ((boolean) F)
{
__gnat_rcheck_06 ("c35507m.adb", 39);
}
else
{
}
return -1;
}
The type of A is c35507m__char, which has [TYPE_MIN, TYPE_MAX] = [4,5].
Given this, VRP correctly eliminates the range check. The code seems to
be generated by the front-end in exp_attr.adb, around line 3849.
Ciao,
Duncan.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26797
next prev parent reply other threads:[~2006-03-23 13:19 UTC|newest]
Thread overview: 51+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-22 7:29 [Bug ada/26797] New: [4.2 Regression] ACATS c35507m cd2a23e cxh1001 wrong code laurent at guerby dot net
2006-03-22 10:33 ` [Bug ada/26797] " ebotcazou at gcc dot gnu dot org
2006-03-22 18:48 ` [Bug ada/26797] [4.2 Regression] ACATS c35507m cd2a23e cxh1001 failures ebotcazou at gcc dot gnu dot org
2006-03-22 21:08 ` pinskia at gcc dot gnu dot org
2006-03-23 13:19 ` baldrick at free dot fr [this message]
2006-03-27 17:09 ` [Bug tree-optimization/26797] " law at redhat dot com
2006-03-27 17:23 ` law at redhat dot com
2006-03-27 20:12 ` laurent at guerby dot net
2006-03-27 20:31 ` law at redhat dot com
2006-03-28 3:56 ` kenner at vlsi1 dot ultra dot nyu dot edu
2006-03-28 15:01 ` law at redhat dot com
2006-03-28 15:33 ` law at redhat dot com
2006-03-30 7:58 ` ebotcazou at gcc dot gnu dot org
2006-03-30 8:25 ` ebotcazou at gcc dot gnu dot org
2006-03-30 8:32 ` ebotcazou at gcc dot gnu dot org
2006-03-30 12:13 ` kenner at vlsi1 dot ultra dot nyu dot edu
2006-04-21 23:40 ` [Bug tree-optimization/26797] [4.2 Regression] ACATS c35507m cd2a23e cxh1001 fail pinskia at gcc dot gnu dot org
2006-04-21 23:41 ` pinskia at gcc dot gnu dot org
2006-04-21 23:41 ` pinskia at gcc dot gnu dot org
2006-06-04 8:27 ` christian dot joensson at gmail dot com
2006-06-04 18:19 ` mmitchel at gcc dot gnu dot org
2006-06-26 23:41 ` laurent at guerby dot net
2006-06-27 3:05 ` kenner at vlsi1 dot ultra dot nyu dot edu
2006-10-29 23:17 ` [Bug ada/26797] [4.2/4.3 regression] " ebotcazou at gcc dot gnu dot org
2006-10-30 9:04 ` law at redhat dot com
2006-10-30 9:21 ` ebotcazou at gcc dot gnu dot org
2007-03-04 10:06 ` ebotcazou at gcc dot gnu dot org
2007-03-04 10:08 ` [Bug ada/26797] [4.3 regression] ACATS " ebotcazou at gcc dot gnu dot org
2007-03-08 9:57 ` [Bug ada/26797] [4.3 regression] ACATS cxh1001 fails baldrick at gcc dot gnu dot org
2007-03-08 12:54 ` kenner at vlsi1 dot ultra dot nyu dot edu
2007-03-08 16:06 ` baldrick at free dot fr
2007-03-08 16:52 ` kenner at vlsi1 dot ultra dot nyu dot edu
2007-03-09 10:41 ` baldrick at free dot fr
2007-03-09 11:11 ` rguenth at gcc dot gnu dot org
2007-03-09 11:19 ` ebotcazou at gcc dot gnu dot org
2007-03-09 11:35 ` baldrick at free dot fr
2007-03-09 11:50 ` baldrick at free dot fr
2007-03-09 13:59 ` kenner at vlsi1 dot ultra dot nyu dot edu
2007-03-09 14:19 ` kenner at vlsi1 dot ultra dot nyu dot edu
2007-03-09 14:29 ` kenner at vlsi1 dot ultra dot nyu dot edu
2007-03-09 22:44 ` baldrick at free dot fr
2007-03-09 23:10 ` baldrick at free dot fr
2007-03-09 23:13 ` kenner at vlsi1 dot ultra dot nyu dot edu
2007-03-09 23:41 ` baldrick at free dot fr
2007-03-10 0:17 ` kenner at vlsi1 dot ultra dot nyu dot edu
2007-03-10 16:52 ` ebotcazou at gcc dot gnu dot org
2007-03-13 10:30 ` baldrick at free dot fr
2007-03-13 12:34 ` kenner at vlsi1 dot ultra dot nyu dot edu
2007-09-12 15:53 ` ebotcazou at gcc dot gnu dot org
2007-09-12 15:55 ` ebotcazou at gcc dot gnu dot org
2007-09-15 6:35 ` law at redhat dot com
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