[Bug c++/26140] New: ice on valid C++ code

[Bug c++/26140] New: ice on valid C++ code

[dcb314 at hotmail dot com]

I just tried to compile package lilypond-2.6.5-2 from Suse Linux with a recent
GNU C++ compiler version 4.2 snapshot 20060204. 

The compiler snapshot said

rm -f ./out/drum-note-performer.dep;
DEPENDENCIES_OUTPUT="./out/drum-note-performer.dep ./out/drum-note-performer.o"
/home/dcb/gnu/42-20060204/results/bin/g++ -g -O3 -Wall -fmessage-length=0 -c
-O2 -g -fmessage-length=0 -D_FORTIFY_SOURCE=2  -DHAVE_CONFIG_H  -DNDEBUG
-DSTRING_UTILS_INLINED -Iinclude -I./out -I../flower/include -I../flower/./out
-I../flower/include -I/usr/include/python2.4   -DNDEBUG -O2 -g
-fmessage-length=0 -D_FORTIFY_SOURCE=2 -O2 -finline-functions -pipe 
-I/opt/gnome/include/pango-1.0 -I/usr/include/freetype2
-I/opt/gnome/include/glib-2.0 -I/opt/gnome/lib64/glib-2.0/include
-I/usr/include/freetype2       -I/usr/include/python2.4   -DNDEBUG -O2 -g
-fmessage-length=0 -D_FORTIFY_SOURCE=2 -O2 -finline-functions -pipe 
-I/opt/gnome/include/pango-1.0 -I/usr/include/freetype2
-I/opt/gnome/include/glib-2.0 -I/opt/gnome/lib64/glib-2.0/include   
-I/usr/include/freetype2   -W -Wall -Wconversion  -o out/drum-note-performer.o
drum-note-performer.cc
drum-note-performer.cc: In member function "virtual void
Drum_note_performer::create_audio_elements()"
drum-note-performer.cc:48: internal compiler error: in
gimplify_var_or_parm_decl, at gimplify.c:1594Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
make[1]: *** [out/drum-note-performer.o] Error 1


Preprocessed source code attached.  No special flags required.


-- 
           Summary: ice on valid C++ code
           Product: gcc
           Version: 4.2.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dcb314 at hotmail dot com
  GCC host triplet: x86_64-suse-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26140

[Bug c++/26140] ice on valid C++ code

[dcb314 at hotmail dot com]

------- Comment #1 from dcb314 at hotmail dot com  2006-02-06 23:02 -------
Created an attachment (id=10793)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10793&action=view)
C++ source code 


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26140

[Bug c++/26140] ice on valid C++ code

[pinskia at gcc dot gnu dot org]

------- Comment #2 from pinskia at gcc dot gnu dot org  2006-02-06 23:30 -------
Reducing.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26140

[Bug c++/26140] [4.2 Regression] ice on valid C++ code

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-02-06 23:39 -------
It worked with "4.2.0 20051217".


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   GCC host triplet|x86_64-suse-gnu             |
 GCC target triplet|                            |x86_64-suse-gnu
           Keywords|                            |ice-on-valid-code
            Summary|ice on valid C++ code       |[4.2 Regression] ice on
                   |                            |valid C++ code
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26140

[Bug c++/26140] [4.2 Regression] ice on valid C++ code

[pinskia at gcc dot gnu dot org]

------- Comment #4 from pinskia at gcc dot gnu dot org  2006-02-07 00:35 -------
Reduced testcase:
struct Pitch
{
  int notename_;
};
struct Audio_note
{
  Audio_note (Pitch p);
};
void create_audio_elements ()
{
  Pitch *pit;
  new Audio_note (*pit);
}
--------
Looks like this is caused by:
2006-01-30  Richard Guenther  <rguenther@suse.de>

        PR c++/23372
        * gimplify.c (gimplify_target_expr): Handle easy cases
        without creating a temporary.
------
The reason I said this patch is because the IR looks like:
  (void) (TARGET_EXPR <D.2018, *(struct Pitch &) (struct Pitch *)
NON_LVALUE_EXPR <pit>>;, TARGET_EXPR <D.1993, (struct Audio_note *) operator
new (1)>;, try
    {
      __comp_ctor  (NON_LVALUE_EXPR <D.1993>, D.2018);
    }
  catch
    {
      operator delete ((void *) D.1993);
    }, D.1993) >>>
>>;
So we reduce the TARGET_EXPR to *pit but we reference  D.2018 in the other
expression.


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pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-02-07 00:35:43
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26140

[Bug c++/26140] [4.2 Regression] ice on valid C++ code

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2006-02-07 10:07 -------
Ho humm, so I propose to revert the patch (that I didn't like very much
anyway).  Can I do so without approval?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26140

[Bug c++/26140] [4.2 Regression] ice on valid C++ code

[pinskia at gcc dot gnu dot org]

------- Comment #6 from pinskia at gcc dot gnu dot org  2006-02-07 14:46 -------
(In reply to comment #5)
> Ho humm, so I propose to revert the patch (that I didn't like very much
> anyway).  Can I do so without approval?

Yes but what about fixing the C++ front-end so that it does not place the
TARGET_EXPR in the wrong spot?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26140

[Bug c++/26140] [4.2 Regression] ice on valid C++ code

[rguenth at gcc dot gnu dot org]

------- Comment #7 from rguenth at gcc dot gnu dot org  2006-02-07 15:36 -------
Subject: Bug 26140

Author: rguenth
Date: Tue Feb  7 15:36:44 2006
New Revision: 110699

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=110699
Log:
2006-02-07  Richard Guenther  <rguenther@suse.de>

        PR c++/26140
        Revert
        2006-01-30  Richard Guenther  <rguenther@suse.de>
        PR c++/23372
        * gimplify.c (gimplify_target_expr): Handle easy cases
        without creating a temporary.

        Revert
        2006-01-30  Richard Guenther  <rguenther@suse.de>
        PR c++/23372
        * gcc.dg/pr23372-1.C: New testcase.

        * g++.dg/tree-ssa/pr26140.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/tree-ssa/pr26140.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/gimplify.c
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/testsuite/gcc.dg/pr23372-1.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26140

[Bug c++/26140] [4.2 Regression] ice on valid C++ code

[rguenth at gcc dot gnu dot org]

------- Comment #8 from rguenth at gcc dot gnu dot org  2006-02-07 15:39 -------
Fixed.


-- 

rguenth at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26140