[Bug c/13475] New: ICE on SIMD variables with partial value initialization

[Bug c/13475] New: ICE on SIMD variables with partial value initialization

[gandalf at winds dot org]

The following code crashes the GCC 3.3.2 compiler when variable 'a' is
initialized with an incomplete list of values. Normally, the rest of the values
in a structure are assumed to be zeroed if left unspecified. The compiler does
not crash if the {1} below is edited to a {0}. The crash appears to happen
regardless of the -march or -mcpu setting.


typedef int v8qi __attribute__((mode(V8QI)));

int main()
{
  v8qi a={1};
}


Compiling displays the following:

simd.c: In function `main':
simd.c:5: warning: unused variable `a'
simd.c:5: internal compiler error: Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

-- 
           Summary: ICE on SIMD variables with partial value initialization
           Product: gcc
           Version: 3.3.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: gandalf at winds dot org
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-linux-gnu
  GCC host triplet: i686-linux-gnu
GCC target triplet: i686-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13475

[Bug c/13475] [3.3 Regression] ICE on SIMD variables with partial value initialization

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2003-12-23 05:06 -------
Confirmed, A regression from 3.3.
>From Phil's regression hunter: Search converges between 2003-07-24-3.3 (#174) and 2003-07
-25-3.3 (#175).
Patch which caused this: <http://gcc.gnu.org/ml/gcc-patches/2003-07/msg02401.html>.

Fixed on the mainline: Search converges between 2003-06-19-trunk (#318) and 2003-06-20-
trunk (#319).

Patch which fixed it on the mainline: <http://gcc.gnu.org/ml/gcc-patches/2003-06/
msg02231.html>.
I will take care of back porting this patch (it is a small one).

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pinskia at gcc dot gnu dot
                   |dot org                     |org
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|                            |1
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2003-12-23 05:06:39
               date|                            |
            Summary|ICE on SIMD variables with  |[3.3 Regression] ICE on SIMD
                   |partial value initialization|variables with partial value
                   |                            |initialization
   Target Milestone|---                         |3.3.3


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13475

[Bug middle-end/13475] [3.3 Regression] ICE on SIMD variables with partial value initialization

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2003-12-23 18:41 -------
Subject: Bug 13475

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	gcc-3_3-branch
Changes by:	pinskia@gcc.gnu.org	2003-12-23 18:41:00

Modified files:
	gcc            : expr.c ChangeLog 

Log message:
	2003-12-23  Andrew Pinski  <pinskia@physics.uc.edu>
	
	PR middle-end/13475
	Backport from mainline:
	2003-06-19  Aldy Hernandez  <aldyh@redhat.com>
	
	* expr.c (const_vector_from_tree): Initialize remaining elements
	to 0.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/expr.c.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.498.2.23&r2=1.498.2.24
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-3_3-branch&r1=1.16114.2.859&r2=1.16114.2.860



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13475

[Bug middle-end/13475] [3.3 Regression] ICE on SIMD variables with partial value initialization

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2003-12-23 18:41 -------
Fixed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13475