From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-bugs-return-196028-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 31120 invoked by alias); 6 Sep 2006 15:37:03 -0000
Received: (qmail 31082 invoked by uid 48); 6 Sep 2006 15:36:55 -0000
Date: Wed, 06 Sep 2006 15:37:00 -0000
Message-ID: <20060906153655.31081.qmail@sourceware.org>
X-Bugzilla-Reason: CC
References: <bug-28915-12387@http.gcc.gnu.org/bugzilla/>
Subject: [Bug middle-end/28915] [4.2 regression] ICE: tree check: expected class 'constant', have 'declaration' (var_decl) in build_vector, at tree.c:973
In-Reply-To: <bug-28915-12387@http.gcc.gnu.org/bugzilla/>
Reply-To: gcc-bugzilla@gcc.gnu.org
To: gcc-bugs@gcc.gnu.org
From: "roger at eyesopen dot com" <gcc-bugzilla@gcc.gnu.org>
Mailing-List: contact gcc-bugs-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Archive: <http://gcc.gnu.org/ml/gcc-bugs/>
List-Post: <mailto:gcc-bugs@gcc.gnu.org>
List-Help: <mailto:gcc-bugs-help@gcc.gnu.org>
Sender: gcc-bugs-owner@gcc.gnu.org
X-SW-Source: 2006-09/txt/msg00441.txt.bz2
List-Id: <gcc-bugs.sourceware.org>



------- Comment #12 from roger at eyesopen dot com  2006-09-06 15:36 -------
Here's the .102t.final_cleanup

;; Function f (f)

f ()
{
  int D.1524;
  int D.1522;
  int D.1520;
  int t.0;

<bb 2>:
  t.0 = (int) &t;
  D.1520 = (int) &t[1];
  D.1522 = (int) &t[2];
  D.1524 = (int) &t[3];
  return {t.0, D.1520, D.1522, D.1524};

}

The CONSTRUCTOR in the return incorrectly has the TREE_CONSTANT flag set.
So the problem is somewhere in tree-ssa.  One workaround/improvement might
be for out-of-ssa to reconstitute the constructor back to a constant.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28915