[Bug driver/40144] New: ice in common_handle_option

[Bug driver/40144] New: ice in common_handle_option

[dcb314 at hotmail dot com]

I just tried to compile the Suse Linux package gnuboy-1.0.3-1060.55
with the GNU g++ version 4.5 snapshot 20090507.

The compiler said

gcc -O2 -g -m64 -fmessage-length=0 -D_FORTIFY_SOURCE=2 -fstack-protector
-funwind-tables -fasynchronous-unwind-tables -pedantic -Wall -Wno-implicit
-Wno-long-long -O3 -fstrength-reduce -fthread-jumps  -fcse-follow-jumps
-fcse-skip-blocks -frerun-cse-after-loop  -fexpensive-optimizations
-fforce-addr -fomit-frame-pointer -I. -I/usr/local/include  -I./sys/nix
-DHAVE_CONFIG_H -DIS_LITTLE_ENDIAN  -DIS_LINUX -c lcd.c -o lcd.o
cc1: internal compiler error: in common_handle_option, at opts.c:2079
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

I'd like to be able to show the C code that causes this problem, but the
problem appears to be in the handling of options to the compiler.

valgrind doesn't seem to help.

The code at line 2079 of opts.c is

    default:
      /* If the flag was handled in a standard way, assume the lack of
         processing here is intentional.  */
      gcc_assert (cl_options[scode].flag_var);
      break;

which doesn't help me much. It would be better code if it gave us a clue
about the unexpected value of scode or perhaps a sanity check on
the value of scode before using it as an index into cl_options
might help.


-- 
           Summary: ice in common_handle_option
           Product: gcc
           Version: 4.5.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: driver
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dcb314 at hotmail dot com
  GCC host triplet: x86_64-suse-linux


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40144

[Bug driver/40144] [4.5 Regression] ice in common_handle_option

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|ice in common_handle_option |[4.5 Regression] ice in
                   |                            |common_handle_option
   Target Milestone|---                         |4.5.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40144

[Bug driver/40144] [4.5 Regression] ice in common_handle_option

[reichelt at gcc dot gnu dot org]

------- Comment #1 from reichelt at gcc dot gnu dot org  2009-05-14 11:20 -------
Confirmed. The option -fcse-skip-blocks is the culprit.


-- 

reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |reichelt at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2009-05-14 11:20:31
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40144

[Bug driver/40144] [4.5 Regression] ice in common_handle_option

[reichelt at gcc dot gnu dot org]

------- Comment #2 from reichelt at gcc dot gnu dot org  2009-05-14 11:26 -------
Steven, that is probably fallout from your patch:

2009-04-27  Steven Bosscher  <steven@gcc.gnu.org>

        * dbgcnt.def (cprop1, cprop2, gcse, jump_bypass): Remove
        (cprop, hoist, pre, store_motion): New debug counters.
        * tree-pass.h (pass_tracer): Move to list of gimple passes, it
        is not an RTL pass anymore.
        (pass_profiling): Remove extern decl for pass removed in 2005.
        (pass_gcse, pass_jump_bypass): Remove.
        [...]
        * common.opt: Remove flag_cse_skip_blocks, adjust documentation to
        make it clear that -fcse-skip-blocks is a no-op for backward compat.
        [...]

A crash doesn't look like a no-op to me ;-)


-- 

reichelt at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40144

[Bug driver/40144] [4.5 Regression] ice in common_handle_option

[steven at gcc dot gnu dot org]

-- 

steven at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|steven at gcc dot gnu dot   |
                   |org                         |
         AssignedTo|unassigned at gcc dot gnu   |steven at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2009-05-14 11:20:31         |2009-05-14 20:14:57
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40144

[Bug driver/40144] [4.5 Regression] ice in common_handle_option

[steven at gcc dot gnu dot org]

------- Comment #3 from steven at gcc dot gnu dot org  2009-05-14 20:24 -------
FWIW:
-fstrength-reduce is a no-op
-fcse-follow-jumps is a no-op
-fcse-skip-blocks -is a no-op (the crash will be fixed before the day is over)
-fforce-addr isa  no-op

The gnuboy maintainers should probably look into updating their Makefile, if
they want to hand-tune the optimizations.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40144

[Bug driver/40144] [4.5 Regression] ice in common_handle_option

[steven at gcc dot gnu dot org]

------- Comment #5 from steven at gcc dot gnu dot org  2009-05-14 20:57 -------
http://gcc.gnu.org/viewcvs?view=rev&revision=147543


-- 

steven at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40144

[Bug driver/40144] [4.5 Regression] ice in common_handle_option

[steven at gcc dot gnu dot org]

------- Comment #4 from steven at gcc dot gnu dot org  2009-05-14 20:57 -------
Subject: Bug 40144

Author: steven
Date: Thu May 14 20:56:54 2009
New Revision: 147543

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=147543
Log:
        PR driver/40144
        * opts.c (common_handle_option): Add OPT_fcse_skip_blocks as a no-op.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/opts.c


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40144