[Bug tree-optimization/51903] New: [4.7 Regression] ICE: in gimple_purge_all_dead_eh_edges, at tree-cfg.c:7196 with -fnon-call-exceptions

[Bug tree-optimization/51903] New: [4.7 Regression] ICE: in gimple_purge_all_dead_eh_edges, at tree-cfg.c:7196 with -fnon-call-exceptions

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51903

             Bug #: 51903
           Summary: [4.7 Regression] ICE: in
                    gimple_purge_all_dead_eh_edges, at tree-cfg.c:7196
                    with -fnon-call-exceptions
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: zsojka@seznam.cz
              Host: x86_64-pc-linux-gnu
            Target: x86_64-pc-linux-gnu


Created attachment 26381
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26381
autoreduced testcase

Compiler output:
$ g++ -O2 -fno-guess-branch-probability -fnon-call-exceptions testcase.C
testcase.C: In function 'void foo()':
testcase.C:194:6: internal compiler error: in gimple_purge_all_dead_eh_edges,
at tree-cfg.c:7196
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

(gdb) bt
#0  fancy_abort (file=0x1457590 "/mnt/svn/gcc-trunk/gcc/tree-cfg.c", line=7196,
function=0x145b1d0 "gimple_purge_all_dead_eh_edges")
    at /mnt/svn/gcc-trunk/gcc/diagnostic.c:898
#1  0x0000000000ba2da5 in gimple_purge_all_dead_eh_edges (blocks=<optimized
out>) at /mnt/svn/gcc-trunk/gcc/tree-cfg.c:7196
#2  0x0000000000ca0dca in fini_pre (do_fre=true) at
/mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:4837
#3  execute_pre (do_fre=true) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:4931
#4  execute_pre (do_fre=true) at /mnt/svn/gcc-trunk/gcc/tree-ssa-pre.c:4859
#5  0x0000000000a8b505 in execute_one_pass (pass=0x1b21a20) at
/mnt/svn/gcc-trunk/gcc/passes.c:2081
#6  0x0000000000a8b8c5 in execute_pass_list (pass=0x1b21a20) at
/mnt/svn/gcc-trunk/gcc/passes.c:2136
#7  0x0000000000a8b8d7 in execute_pass_list (pass=0x1995d40) at
/mnt/svn/gcc-trunk/gcc/passes.c:2137
#8  0x0000000000bed99e in tree_rest_of_compilation (fndecl=0x7ffff5c2a000) at
/mnt/svn/gcc-trunk/gcc/tree-optimize.c:420
#9  0x0000000000840bba in cgraph_expand_function (node=0x7ffff5a96b40) at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1818
#10 0x0000000000842a8c in cgraph_expand_all_functions () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1885
#11 cgraph_optimize () at /mnt/svn/gcc-trunk/gcc/cgraphunit.c:2199
#12 0x00000000008430ea in cgraph_finalize_compilation_unit () at
/mnt/svn/gcc-trunk/gcc/cgraphunit.c:1327
#13 0x0000000000661823 in cp_write_global_declarations () at
/mnt/svn/gcc-trunk/gcc/cp/decl2.c:4051
#14 0x0000000000b8049c in compile_file () at
/mnt/svn/gcc-trunk/gcc/toplev.c:573
#15 do_compile () at /mnt/svn/gcc-trunk/gcc/toplev.c:1938
#16 toplev_main (argc=16, argv=0x7fffffffd818) at
/mnt/svn/gcc-trunk/gcc/toplev.c:2014
#17 0x00007ffff61cc09d in __libc_start_main () from /lib64/libc.so.6
#18 0x0000000000585bc1 in _start ()


Nonreduced testcase:
#include <vector>
void foo ()
{
  std::vector < std::vector< int > >(20000);
}

Tested revisions:
r183298 - crash
r183120 - crash
r182547 - OK

[Bug tree-optimization/51903] [4.7 Regression] ICE: in gimple_purge_all_dead_eh_edges, at tree-cfg.c:7196 with -fnon-call-exceptions

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51903

Richard Guenther <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-01-19
   Target Milestone|---                         |4.7.0
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-19 15:20:04 UTC ---
Confirmed.

[Bug tree-optimization/51903] [4.7 Regression] ICE: in gimple_purge_all_dead_eh_edges, at tree-cfg.c:7196 with -fnon-call-exceptions

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51903

Richard Guenther <rguenth at gcc dot gnu.org> changed:

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

--- Comment #2 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-19 15:25:36 UTC ---
I have a patch.

[Bug tree-optimization/51903] [4.7 Regression] ICE: in gimple_purge_all_dead_eh_edges, at tree-cfg.c:7196 with -fnon-call-exceptions

[rguenther at suse dot de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51903

--- Comment #4 from rguenther at suse dot de <rguenther at suse dot de> 2012-01-19 15:40:08 UTC ---
On Thu, 19 Jan 2012, jakub at gcc dot gnu.org wrote:

> http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51903
> 
> --- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-01-19 15:32:28 UTC ---
> Created attachment 26382
>   --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26382
> pr51903.C
> 
> Slightly more reduced testcase.

I'm using the testcase with the #include.

Richard.

[Bug tree-optimization/51903] [4.7 Regression] ICE: in gimple_purge_all_dead_eh_edges, at tree-cfg.c:7196 with -fnon-call-exceptions

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51903

--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-01-19 15:32:28 UTC ---
Created attachment 26382
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26382
pr51903.C

Slightly more reduced testcase.

[Bug tree-optimization/51903] [4.7 Regression] ICE: in gimple_purge_all_dead_eh_edges, at tree-cfg.c:7196 with -fnon-call-exceptions

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51903

--- Comment #5 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-20 10:10:54 UTC ---
Author: rguenth
Date: Fri Jan 20 10:10:46 2012
New Revision: 183329

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=183329
Log:
2012-01-20  Richard Guenther  <rguenther@suse.de>

    PR tree-optimization/51903
    * tree-ssa-pre.c (eliminate): Properly purging of EH edges
    when removing stmts.

    * g++.dg/torture/pr51903.C: New testcase.

Added:
    trunk/gcc/testsuite/g++.dg/torture/pr51903.C
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/testsuite/ChangeLog
    trunk/gcc/tree-ssa-pre.c

[Bug tree-optimization/51903] [4.7 Regression] ICE: in gimple_purge_all_dead_eh_edges, at tree-cfg.c:7196 with -fnon-call-exceptions

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51903

Richard Guenther <rguenth at gcc dot gnu.org> changed:

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

--- Comment #6 from Richard Guenther <rguenth at gcc dot gnu.org> 2012-01-20 10:11:49 UTC ---
Fixed.