[Bug c++/31526] New: [4.3 regression] ICE in alloc_aux_for_block()

[Bug c++/31526] New: [4.3 regression] ICE in alloc_aux_for_block()

[martin at mpa-garching dot mpg dot de]

Current trunk's g++ ICE's on the attached testcase when compiling with -O:

/scratch/martin/cleanls>g++ -v -O -c bug.ii
Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: /scratch/martin/gcc/configure
--prefix=/afs/mpa/data/martin/ugcc --enable-languages=c++,fortran
--enable-checking=release
Thread model: posix
gcc version 4.3.0 20070410 (experimental)
 /afs/mpa/data/martin/ugcc/libexec/gcc/i686-pc-linux-gnu/4.3.0/cc1plus
-fpreprocessed bug.ii -quiet -dumpbase bug.ii -mtune=generic -auxbase bug -O
-version -o /tmp/ccx57rja.s
GNU C++ version 4.3.0 20070410 (experimental) (i686-pc-linux-gnu)
        compiled by GNU C version 4.3.0 20070410 (experimental).
GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072
Compiler executable checksum: 107a3cf2e8248586e6673669df88f7f9
sat_info.cc: In function 'void readEntirePointing(iohandle&, const
std::string&, const std::string&, arr<pointing>&)':
sat_info.cc:18: internal compiler error: in alloc_aux_for_block, at cfg.c:665
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

I'm sorry that I currently don't have the time to reduce the testcase further.


-- 
           Summary: [4.3 regression] ICE in alloc_aux_for_block()
           Product: gcc
           Version: 4.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: martin at mpa-garching dot mpg dot de
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526

[Bug c++/31526] [4.3 regression] ICE in alloc_aux_for_block()

[martin at mpa-garching dot mpg dot de]

------- Comment #1 from martin at mpa-garching dot mpg dot de  2007-04-10 12:54 -------
Created an attachment (id=13343)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13343&action=view)
unreduced testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526

[Bug c++/31526] [4.3 regression] ICE in alloc_aux_for_block()

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2007-04-10 13:07 -------
Zdenek, this is likely caused by your patch (same bug as for tramp3d). 
Reducing.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |rguenth at gcc dot gnu dot
                   |                            |org, rakdver at gcc dot gnu
                   |                            |dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526

[Bug c++/31526] [4.3 regression] ICE in alloc_aux_for_block()

[rakdver at gcc dot gnu dot org]

------- Comment #3 from rakdver at gcc dot gnu dot org  2007-04-10 13:10 -------
Most likely (although probably it just exposes an existing bug, some pass
forgets to clean up aux after using it).


-- 

rakdver at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |rakdver at gcc dot gnu dot
                   |dot org                     |org
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2007-04-10 13:10:59
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526

[Bug c++/31526] [4.3 regression] ICE in alloc_aux_for_block()

[rakdver at gcc dot gnu dot org]

------- Comment #4 from rakdver at gcc dot gnu dot org  2007-04-10 13:59 -------
This patch fixes the problem:

Index: tree-inline.c
===================================================================
*** tree-inline.c       (revision 123693)
--- tree-inline.c       (working copy)
*************** copy_cfg_body (copy_body_data * id, gcov
*** 1205,1211 ****
        new->aux = bb;
      }

!   last = n_basic_blocks;
    /* Now that we've duplicated the blocks, duplicate their edges.  */
    FOR_ALL_BB_FN (bb, cfun_to_copy)
      copy_edges_for_bb (bb, count_scale);
--- 1205,1211 ----
        new->aux = bb;
      }

!   last = last_basic_block;
    /* Now that we've duplicated the blocks, duplicate their edges.  */
    FOR_ALL_BB_FN (bb, cfun_to_copy)
      copy_edges_for_bb (bb, count_scale);
*************** copy_cfg_body (copy_body_data * id, gcov
*** 1219,1225 ****
      }
    /* Zero out AUX fields of newly created block during EH edge
       insertion. */
!   for (; last < n_basic_blocks; last++)
      BASIC_BLOCK (last)->aux = NULL;
    entry_block_map->aux = NULL;
    exit_block_map->aux = NULL;
--- 1219,1225 ----
      }
    /* Zero out AUX fields of newly created block during EH edge
       insertion. */
!   for (; last < last_basic_block; last++)
      BASIC_BLOCK (last)->aux = NULL;
    entry_block_map->aux = NULL;
    exit_block_map->aux = NULL;


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526

[Bug c++/31526] [4.3 regression] ICE in alloc_aux_for_block()

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2007-04-10 14:08 -------
Created an attachment (id=13344)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=13344&action=view)
reduced testcase


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526

[Bug tree-optimization/31526] [4.3 regression] ICE in alloc_aux_for_block()

[rakdver at gcc dot gnu dot org]

------- Comment #6 from rakdver at gcc dot gnu dot org  2007-04-10 22:03 -------
Patch:

http://gcc.gnu.org/ml/gcc-patches/2007-04/msg00486.html


-- 

rakdver at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                URL|                            |http://gcc.gnu.org/ml/gcc-
                   |                            |patches/2007-
                   |                            |04/msg00486.html
          Component|c++                         |tree-optimization
           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526

[Bug tree-optimization/31526] [4.3 regression] ICE in alloc_aux_for_block()

[rakdver at gcc dot gnu dot org]

------- Comment #7 from rakdver at gcc dot gnu dot org  2007-04-10 22:10 -------
Subject: Bug 31526

Author: rakdver
Date: Tue Apr 10 22:10:26 2007
New Revision: 123699

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=123699
Log:
        PR tree-optimization/31526
        * tree-inline.c (copy_cfg_body): Use last_basic_block instead of
        n_basic_blocks to find newly added blocks.


Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/tree-inline.c


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526

[Bug tree-optimization/31526] [4.3 regression] ICE in alloc_aux_for_block()

[martin at mpa-garching dot mpg dot de]

------- Comment #8 from martin at mpa-garching dot mpg dot de  2007-04-13 09:46 -------
works for me again, thanks!


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526

[Bug tree-optimization/31526] [4.3 regression] ICE in alloc_aux_for_block()

[rguenth at gcc dot gnu dot org]

------- Comment #9 from rguenth at gcc dot gnu dot org  2007-04-13 09:47 -------
Fixed.


-- 

rguenth at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526

[Bug tree-optimization/31526] [4.3 regression] ICE in alloc_aux_for_block()

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31526