[Bug treelang/28980] New: internal compiler error: in tree_low_cst, at tree.c:4423

[Bug treelang/28980] New: internal compiler error: in tree_low_cst, at tree.c:4423

[mkgnu at mkgnu dot net]

internal compiler error: in tree_low_cst, at tree.c:4423

First, If I run this with -E, I get the preprocessed source that I will attach.

vmfreebsd# gcc42 -E -g -I/usr/local/include
-I/root/devel/dynamos/src/shared/include
-I/root/devel/dynamos/src/framework/include
-I/root/devel/dynamos/src/disassembler/slicer/include
-I/root/devel/dynamos/src/os/include -I/root/devel/dynamos/config
-I/root/devel/dynamos/src/libslicer/include -I/root/devel/dynamos/devel/include
-c dynreplace.c > preprocessed_source.c


And now, the bug:

vmfreebsd# gcc42 -g -I/usr/local/include
-I/root/devel/dynamos/src/shared/include
-I/root/devel/dynamos/src/framework/include
-I/root/devel/dynamos/src/disassembler/slicer/include
-I/root/devel/dynamos/src/os/include -I/root/devel/dynamos/config
-I/root/devel/dynamos/src/libslicer/include -I/root/devel/dynamos/devel/include
-c dynreplace.c
dynreplace.c: In function 'dynreplace_add_trampoline':
dynreplace.c:71: warning: incompatible implicit declaration of built-in
function 'memcpy'
dynreplace.c:48: internal compiler error: in tree_low_cst, at tree.c:4423
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

vmfreebsd# gcc42 --version
gcc42 (GCC) 4.2.0 20060218 (experimental)
Copyright (C) 2006 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

vmfreebsd# uname -a
FreeBSD vmfreebsd.mkgnu.net 6.1-RELEASE FreeBSD 6.1-RELEASE #0: Sun May  7
04:32:43 UTC 2006 root@opus.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386


This is running inside a VMWare virtual machine loaded with FreeBSD 6.1.

No bug occurs when compiling with gcc-2.95 or gcc-3.3.4.


-- 
           Summary: internal compiler error: in tree_low_cst, at tree.c:4423
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: treelang
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mkgnu at mkgnu dot net
 GCC build triplet: i386-unknown-freebsd6.1
  GCC host triplet: i386-unknown-freebsd6.1
GCC target triplet: i386-unknown-freebsd6.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug treelang/28980] internal compiler error: in tree_low_cst, at tree.c:4423

[mkgnu at mkgnu dot net]

------- Comment #1 from mkgnu at mkgnu dot net  2006-09-08 04:11 -------
Created an attachment (id=12210)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12210&action=view)
The preprocessed source that causes this bug.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug treelang/28980] internal compiler error: in tree_low_cst, at tree.c:4423

[mkgnu at mkgnu dot net]

------- Comment #2 from mkgnu at mkgnu dot net  2006-09-08 04:14 -------
gcc42 originated from running a:

# pkg_add -r gcc42

in FreeBSD 6.1. This command installed the package gcc-4.2.0_20060218


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug middle-end/28980] internal compiler error: in tree_low_cst, at tree.c:4423

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-09-08 04:20 -------
Well 20060218 is almost 7 months ago but I get a different error with the
mainline as of yesterday:
dynreplace.c:110: internal compiler error: in loc_descriptor_from_tree_1, at
dwarf2out.c:9407
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug middle-end/28980] [4.0/4.1/4.2 Regression] ICE with loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2006-09-08 04:31 -------
Reduced testcase:
extern void dynreplace_trampoline(void);
extern void dynreplace_trampoline_endlabel(void);
int dynreplace_add_trampoline(void)
{
  unsigned long trampoline_code[(((unsigned long)
(&(dynreplace_trampoline_endlabel))
-(unsigned long) (&dynreplace_trampoline)))
];
}


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
            Summary|internal compiler error: in |[4.0/4.1/4.2 Regression] ICE
                   |tree_low_cst, at tree.c:4423|with
                   |                            |loc_descriptor_from_tree_1
                   |                            |with -g
   Target Milestone|---                         |4.0.4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug middle-end/28980] [4.0/4.1/4.2 Regression] ICE with loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #5 from pinskia at gcc dot gnu dot org  2006-09-08 04:33 -------
Confirmed, note this is semi undefined code.  Really this is a big weird as we
are taking the difference between two function pointers.  I think the ICE with
tree_low_cst has been fixed but the ICE with loc_descriptor_from_tree_1 still
exists.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
  GCC build triplet|i386-unknown-freebsd6.1     |
   GCC host triplet|i386-unknown-freebsd6.1     |
 GCC target triplet|i386-unknown-freebsd6.1     |
   Last reconfirmed|0000-00-00 00:00:00         |2006-09-08 04:33:23
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug middle-end/28980] [4.0/4.1/4.2 Regression] ICE with loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #6 from pinskia at gcc dot gnu dot org  2006-09-08 04:44 -------
This is just like PR 14492 now.

Janis,
  Could you do a regression hunt on when the reduced testcase in comment #4
started to pass without any options?

Thanks,
Andrew


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |janis at gcc dot gnu dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug middle-end/28980] [4.0/4.1/4.2 Regression] ICE with loc_descriptor_from_tree_1 with -g

[janis at gcc dot gnu dot org]

------- Comment #7 from janis at gcc dot gnu dot org  2006-09-08 19:11 -------
A regression hunt on powerpc-linux, using the reduced testcase from comment #4
with no options, identified this patch for which that test starts compiling
cleanly:

    http://gcc.gnu.org/viewcvs?view=rev&rev=116450

    r116450 | jsm28 | 2006-08-25 23:01:16 +0000 (Fri, 25 Aug 2006)


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug middle-end/28980] [4.0/4.1/4.2 Regression] ICE in loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #8 from pinskia at gcc dot gnu dot org  2006-09-08 19:14 -------
So the ICE in tree_low_cst has been fixed in the next releases of GCC 4.1.x and
4.0.x, that is good news but we still have the ICE in
loc_descriptor_from_tree_1 now.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |27893
           Keywords|                            |ice-checking
            Summary|[4.0/4.1/4.2 Regression] ICE|[4.0/4.1/4.2 Regression] ICE
                   |with                        |in
                   |loc_descriptor_from_tree_1  |loc_descriptor_from_tree_1
                   |with -g                     |with -g


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug middle-end/28980] [4.0/4.1/4.2 Regression] ICE in loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #9 from pinskia at gcc dot gnu dot org  2006-09-09 18:23 -------
I have a fix for this which I am testing right now.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pinskia at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug debug/28980] [4.0/4.1/4.2 Regression] ICE in loc_descriptor_from_tree_1 with -g

[patchapp at dberlin dot org]

------- Comment #10 from patchapp at dberlin dot org  2006-09-14 00:15 -------
Subject: Bug number PR 28980

A patch for this bug has been added to the patch tracker.
The mailing list url for the patch is
http://gcc.gnu.org/ml/gcc-patches/2006-09/msg00525.html


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug debug/28980] [4.0/4.1/4.2 Regression] ICE in loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #11 from pinskia at gcc dot gnu dot org  2006-09-14 00:37 -------
Subject: Bug 28980

Author: pinskia
Date: Thu Sep 14 00:37:14 2006
New Revision: 116939

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=116939
Log:

2006-09-13  Andrew Pinski  <pinskia@physics.uc.edu>

        PR debug/28980
        * dwarf2out.c (loc_descriptor_from_tree_1): Handle
        FUNCTION_DECL.

2006-09-13  Andrew Pinski  <pinskia@physics.uc.edu>

        PR debug/28980
        * gcc.c-torture/compile/debugvlafunction-1.c: New test.



Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/debugvlafunction-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dwarf2out.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug debug/28980] [4.0/4.1 Regression] ICE in loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #12 from pinskia at gcc dot gnu dot org  2006-09-14 00:38 -------
Fixed on the mainline at least.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.0/4.1/4.2 Regression] ICE|[4.0/4.1 Regression] ICE in
                   |in                          |loc_descriptor_from_tree_1
                   |loc_descriptor_from_tree_1  |with -g
                   |with -g                     |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug debug/28980] [4.0/4.1 Regression] ICE in loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #13 from pinskia at gcc dot gnu dot org  2006-10-05 14:33 -------
Subject: Bug 28980

Author: pinskia
Date: Thu Oct  5 14:33:46 2006
New Revision: 117456

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=117456
Log:
2006-10-05  Andrew Pinski  <pinskia@physics.uc.edu>

        PR debug/28980
        * dwarf2out.c (loc_descriptor_from_tree_1): Handle
        FUNCTION_DECL.

2006-10-05  Andrew Pinski  <pinskia@physics.uc.edu>

        PR debug/28980
        * gcc.c-torture/compile/debugvlafunction-1.c: New test.




Added:
   
branches/gcc-4_1-branch/gcc/testsuite/gcc.c-torture/compile/debugvlafunction-1.c
      - copied unchanged from r116939,
trunk/gcc/testsuite/gcc.c-torture/compile/debugvlafunction-1.c
Modified:
    branches/gcc-4_1-branch/gcc/ChangeLog
    branches/gcc-4_1-branch/gcc/dwarf2out.c
    branches/gcc-4_1-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug debug/28980] [4.0 Regression] ICE in loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #14 from pinskia at gcc dot gnu dot org  2006-10-05 14:34 -------
Fixed in 4.1 also.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.0/4.1 Regression] ICE in |[4.0 Regression] ICE in
                   |loc_descriptor_from_tree_1  |loc_descriptor_from_tree_1
                   |with -g                     |with -g


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug debug/28980] [4.0 Regression] ICE in loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #15 from pinskia at gcc dot gnu dot org  2006-10-09 04:25 -------
Subject: Bug 28980

Author: pinskia
Date: Mon Oct  9 04:25:44 2006
New Revision: 117568

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=117568
Log:
2006-10-08  Andrew Pinski  <pinskia@physics.uc.edu>

        PR debug/28980
        * dwarf2out.c (loc_descriptor_from_tree_1): Handle
        FUNCTION_DECL.

2006-10-08  Andrew Pinski  <pinskia@physics.uc.edu>

        PR debug/28980
        * gcc.c-torture/compile/debugvlafunction-1.c: New test.




Added:
   
branches/gcc-4_0-branch/gcc/testsuite/gcc.c-torture/compile/debugvlafunction-1.c
      - copied unchanged from r116939,
trunk/gcc/testsuite/gcc.c-torture/compile/debugvlafunction-1.c
Modified:
    branches/gcc-4_0-branch/gcc/ChangeLog
    branches/gcc-4_0-branch/gcc/dwarf2out.c
    branches/gcc-4_0-branch/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980

[Bug debug/28980] [4.0 Regression] ICE in loc_descriptor_from_tree_1 with -g

[pinskia at gcc dot gnu dot org]

------- Comment #16 from pinskia at gcc dot gnu dot org  2006-10-09 04:27 -------
Fixed.


-- 

pinskia at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=28980