[Bug ada/40462] New: ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[Bug ada/40462] New: ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[ro at gcc dot gnu dot org]

While bootstrapping mainline as of 2009012 (rev 148427) on IRIX 6.5 (with the
O32 multilib excluded to work around PR libfortran/40344), compilation of
mlib-tgt.adb fails:

ro@columba 211 > pwd
/vol/gcc/obj/gcc-4.5.0-20090612/6.5-gcc-no-o32/gcc/ada/tools
ro@columba 212 > ../../xgcc -B../../ -c -g -O2 -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes  -gnatpg -gnata -I- -I../rts -I.
-I/vol/gccsrc/src/gcc-dist/gcc/ada
/vol/gccsrc/src/gcc-dist/gcc/ada/mlib-tgt.adb -o mlib-tgt.o
+===========================GNAT BUG DETECTED==============================+
| 4.5.0 20090612 (experimental) [trunk revision 148427] (mips-sgi-irix6.5) GCC
e
rror:|
| in dwarf2out_begin_epilogue, at dwarf2out.c:2773                         |
| Error detected around /vol/gccsrc/src/gcc-dist/gcc/ada/mlib-tgt.adb:169:8|
| Please submit a bug report; see http://gcc.gnu.org/bugs.html.            |
| Use a subject line meaningful to you and us to track the bug.            |
| Include the entire contents of this bug box in the report.               |
| Include the exact gcc or gnatmake command that you entered.              |
| Also include sources listed below in gnatchop format                     |
| (concatenated together with no headers between files).                   |
+==========================================================================+

Please include these source files with error report
Note that list may not be accurate in some cases,
so please double check that the problem can still
be reproduced with the set of files listed.
Consider also -gnatd.n switch (see debug.adb).

../rts/system.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/mlib-tgt.adb
/vol/gccsrc/src/gcc-dist/gcc/ada/mlib-tgt.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/mlib.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/namet.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/alloc.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/table.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/types.ads
../rts/unchconv.ads
../rts/unchdeal.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/hostparm.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/osint.ads
../rts/s-os_lib.ads
../rts/s-string.ads
../rts/ada.ads
../rts/a-uncdea.ads
../rts/gnat.ads
../rts/g-os_lib.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/prj.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/casing.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/scans.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/uintp.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/urealp.ads
../rts/g-dynhta.ads
../rts/g-dyntab.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/mlib-fil.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/prj-com.ads
/vol/gccsrc/src/gcc-dist/gcc/ada/mlib-tgt-specific.ads
../rts/s-exctab.ads
../rts/s-stalib.ads
../rts/a-unccon.ads
../rts/s-unstyp.ads
../rts/a-filico.ads
../rts/a-finali.ads
../rts/s-finroo.ads
../rts/a-stream.ads
../rts/a-tags.ads../rts/a-except.ads
../rts/s-parame.ads
../rts/s-traent.ads
../rts/s-soflin.ads
../rts/s-stache.ads
../rts/s-secsta.ads
../rts/s-finimp.ads
../rts/s-stratt.ads


Running gnat1 under gdb reveals:

Breakpoint 1, fancy_abort (file=0x10d97048
"/vol/gcc/src/gcc-dist/gcc/dwarf2out.c", line=2773, function=0x10d9a5d8
"dwarf2out_begin_epilogue") at /vol/gcc/src/gcc-dist/gcc/diagnostic.c:730
(gdb) where
#0  fancy_abort (file=0x10d97048 "/vol/gcc/src/gcc-dist/gcc/dwarf2out.c",
line=2773, function=0x10d9a5d8 "dwarf2out_begin_epilogue") at
/vol/gcc/src/gcc-dist/gcc/diagnostic.c:730
#1  0x109fca90 in dwarf2out_begin_epilogue (insn=<value optimized out>) at
/vol/gcc/src/gcc-dist/gcc/dwarf2out.c:2773
#2  0x106edeb0 in final_scan_insn (insn=0x450f540, file=0xfb4f7c0,
optimize=<value optimized out>, nopeepholes=<value optimized out>,
seen=0x7ffb7b50) at /vol/gcc/src/gcc-dist/gcc/final.c:1893
#3  0x106ee92c in final (first=<value optimized out>, file=0xfb4f7c0,
optimize=2) at /vol/gcc/src/gcc-dist/gcc/final.c:1714
#4  0x106eeaac in ?? ()
warning: GDB can't find the start of the function at 0x106eeaab.

    GDB is unable to find the start of the function at 0x106eeaab
and thus can't determine the size of that function's stack frame.
This means that GDB may be unable to access that stack frame, or
the frames below it.
    This problem is most likely caused by an invalid program counter or
stack pointer.
    However, if you think GDB should simply search farther back
from 0x106eeaab for code which looks like the beginning of a
function, you can increase the range of the search using the `set
heuristic-fence-post' command.
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

Unfortunately, gdb 6.8 cannot display i in the gcc_assert(i != NULL) in
dwarf2out_begin_epilogue:2773:

(gdb) up
#1  0x109fca90 in dwarf2out_begin_epilogue (insn=<value optimized out>) at
/vol/gcc/src/gcc-dist/gcc/dwarf2out.c:2773
(gdb) p i
No symbol "i" in current context.
../rts/s-stoele.ads
../rts/s-stoele.adb


-- 
           Summary: ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773
                    while compiling mlib-tgt.adb
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: ada
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: ro at gcc dot gnu dot org
 GCC build triplet: mips-sgi-irix6.5
  GCC host triplet: mips-sgi-irix6.5
GCC target triplet: mips-sgi-irix6.5


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[pinskia at gcc dot gnu dot org]

-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pinskia at gcc dot gnu dot
                   |                            |org
          Component|ada                         |debug
           Keywords|                            |build, ice-on-valid-code
            Summary|ICE in                      |[4.5 Regression] ICE in
                   |dwarf2out_begin_epilogue, at|dwarf2out_begin_epilogue, at
                   |dwarf2out.c:2773 while      |dwarf2out.c:2773 while
                   |compiling mlib-tgt.adb      |compiling mlib-tgt.adb
   Target Milestone|---                         |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[jakub at gcc dot gnu dot org]

------- Comment #1 from jakub at gcc dot gnu dot org  2009-06-16 16:27 -------
Does the http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01125.html
patch help?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[ro at techfak dot uni-bielefeld dot de]

------- Comment #2 from ro at techfak dot uni-bielefeld dot de  2009-06-16 17:51 -------
Subject: Re:  [4.5 Regression] ICE in dwarf2out_begin_epilogue, at
dwarf2out.c:2773 while compiling mlib-tgt.adb

jakub at gcc dot gnu dot org writes:

> Does the http://gcc.gnu.org/ml/gcc-patches/2009-06/msg01125.html
> patch help?

It does indeed: building gcc/ada/tools finished now and the bootstrap
continues.

Thanks for the hint.

        Rainer


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[debian-gcc at lists dot debian dot org]

------- Comment #3 from debian-gcc at lists dot debian dot org  2009-06-22 08:23 -------
seen on hppa-linux-gnu as well, the proposed fix allows bootstrapping on
hppa-linux-gnu as well.

  Matthias


-- 

debian-gcc at lists dot debian dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |debian-gcc at lists dot
                   |                            |debian dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[jakub at gcc dot gnu dot org]

------- Comment #4 from jakub at gcc dot gnu dot org  2009-07-01 19:26 -------
Subject: Bug 40462

Author: jakub
Date: Wed Jul  1 19:25:52 2009
New Revision: 149150

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=149150
Log:
        PR debug/40462
        * jump.c (returnjump_p): Revert last patch.
        * dwarf2out.c (dwarf2out_begin_epilogue): Handle SEQUENCEs.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/dwarf2out.c
    trunk/gcc/jump.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[joel at gcc dot gnu dot org]

------- Comment #5 from joel at gcc dot gnu dot org  2009-07-02 16:44 -------
/home/joel/test-gcc/b-gcc1-sparc/./gcc/xgcc
-B/home/joel/test-gcc/b-gcc1-sparc/./gcc/ -nostdinc
-B/home/joel/test-gcc/b-gcc1-sparc/sparc-rtems4.10/newlib/ -isystem
/home/joel/test-gcc/b-gcc1-sparc/sparc-rtems4.10/newlib/targ-include -isystem
/home/joel/test-gcc/gcc-svn/newlib/libc/include
-B/home/joel/test-gcc/install/sparc-rtems4.10/bin/
-B/home/joel/test-gcc/install/sparc-rtems4.10/lib/ -isystem
/home/joel/test-gcc/install/sparc-rtems4.10/include -isystem
/home/joel/test-gcc/install/sparc-rtems4.10/sys-include    -g -O2 -msoft-float
-O2 -I/home/joel/test-gcc/gcc-svn/gcc/../newlib/libc/sys/rtems/include -g -O2
-DIN_GCC -DCROSS_DIRECTORY_STRUCTURE  -W -Wall -Wwrite-strings
-Wstrict-prototypes -Wmissing-prototypes -Wcast-qual -Wold-style-definition 
-isystem ./include   -g -DHAVE_GTHR_DEFAULT -DIN_LIBGCC2
-D__GCC_FLOAT_NOT_NEEDED -Dinhibit_libc  -I. -I. -I../../.././gcc
-I/home/joel/test-gcc/gcc-svn/libgcc -I/home/joel/test-gcc/gcc-svn/libgcc/.
-I/home/joel/test-gcc/gcc-svn/libgcc/../gcc
-I/home/joel/test-gcc/gcc-svn/libgcc/../include  -DHAVE_CC_TLS -o
_gcov_average_profiler.o -MT _gcov_average_profiler.o -MD -MP -MF
_gcov_average_profiler.dep -DL_gcov_average_profiler -c
/home/joel/test-gcc/gcc-svn/libgcc/../gcc/libgcov.c
/home/joel/test-gcc/gcc-svn/libgcc/../gcc/unwind-dw2-fde.c: In function
'__register_frame_info_table_bases':
/home/joel/test-gcc/gcc-svn/libgcc/../gcc/unwind-dw2-fde.c:141:1: internal
compiler error: in dwarf2out_begin_epilogue, at dwarf2out.c:2773


-- 

joel at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
 GCC target triplet|mips-sgi-irix6.5            |mips-sgi-irix6.5 sparc-
                   |                            |rtems4.10


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[joel at gcc dot gnu dot org]

------- Comment #6 from joel at gcc dot gnu dot org  2009-07-02 16:44 -------
*** Bug 40622 has been marked as a duplicate of this bug. ***


-- 

joel at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[rth at gcc dot gnu dot org]

------- Comment #7 from rth at gcc dot gnu dot org  2009-07-02 18:05 -------
*** Bug 40620 has been marked as a duplicate of this bug. ***


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[jsm28 at gcc dot gnu dot org]

------- Comment #8 from jsm28 at gcc dot gnu dot org  2009-07-29 22:37 -------
Is comment #5 meant to be a claim that the patch does not fully fix the bug?
If so, please state with what revision on what target the problem is still
observed.

In any case, the targets mentioned are not primary or secondary targets;
please restore to P3 if still observed on a primary or secondary target.


-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P4


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[joel at gcc dot gnu dot org]

------- Comment #9 from joel at gcc dot gnu dot org  2009-07-30 01:29 -------
(In reply to comment #8)
> Is comment #5 meant to be a claim that the patch does not fully fix the bug?
> If so, please state with what revision on what target the problem is still
> observed.

No.  I reported this independently on a separate PR which was marked as a dupe
of this and this comment was merged.  It was not a comment on this PR. Since I
apparently didn't include the SVN revision on that PR, I can't say if it was
before or after this patch.  Given how long it takes to build and test
*-rtems*, it was likely before the patch.

> In any case, the targets mentioned are not primary or secondary targets;
> please restore to P3 if still observed on a primary or secondary target.
> 


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[rguenth at gcc dot gnu dot org]

------- Comment #10 from rguenth at gcc dot gnu dot org  2010-04-06 11:20 -------
GCC 4.5.0 is being released.  Deferring to 4.5.1.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.5.0                       |4.5.1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5/4.6 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[ro at gcc dot gnu dot org]

------- Comment #11 from ro at gcc dot gnu dot org  2010-04-22 15:09 -------
Not an IRIX issue any longer.


-- 

ro at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  GCC build triplet|mips-sgi-irix6.5            |
   GCC host triplet|mips-sgi-irix6.5            |
 GCC target triplet|mips-sgi-irix6.5 sparc-     |sparc-rtems4.10
                   |rtems4.10                   |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5/4.6 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[rguenth at gcc dot gnu dot org]

------- Comment #12 from rguenth at gcc dot gnu dot org  2010-07-31 09:29 -------
GCC 4.5.1 is being released, adjusting target milestone.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.5.1                       |4.5.2


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5/4.6 Regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[ebotcazou at gcc dot gnu dot org]

------- Comment #13 from ebotcazou at gcc dot gnu dot org  2010-09-20 21:42 -------
What's the status of this PR on RTEMS?


-- 

ebotcazou at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |ebotcazou at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |WAITING


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

[Bug debug/40462] [4.5 regression] ICE in dwarf2out_begin_epilogue, at dwarf2out.c:2773 while compiling mlib-tgt.adb

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40462

Eric Botcazou <ebotcazou at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Target|sparc-rtems4.10             |mips-sgi-irix6.5
             Status|WAITING                     |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|4.5.2                       |4.5.0
            Summary|[4.5/4.6 Regression] ICE in |[4.5 regression] ICE in
                   |dwarf2out_begin_epilogue,   |dwarf2out_begin_epilogue,
                   |at dwarf2out.c:2773 while   |at dwarf2out.c:2773 while
                   |compiling mlib-tgt.adb      |compiling mlib-tgt.adb

--- Comment #14 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2010-11-02 15:08:50 UTC ---
Please open a separate for the RTEMS issue, if it still exists.