[Bug c++/49569] New: -std=gnu++0x causes segmentation fault

[Bug c++/49569] New: -std=gnu++0x causes segmentation fault

[dcb314 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49569

           Summary: -std=gnu++0x causes segmentation fault
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: dcb314@hotmail.com


Created attachment 24623
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24623
gzipped C++ source code

I just tried to compile the pokerth-0.8.3-6.fc16  package with the latest
trunk snapshot 20110625 on an AMD x86_64 box.

The compiler said

./include/c++/4.7.0/bits/stl_pair.h:137:45: internal compiler error:
Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

gdb says

Program received signal SIGSEGV, Segmentation fault.
iterative_hash (k_in=<optimized out>, length=<optimized out>,
    initval=<optimized out>)
    at ../../src/gcc-4.7-20110625/libiberty/hashtab.c:981
981     case 4 : a+=((hashval_t)k[3]<<24);
Missing separate debuginfos, use: debuginfo-install glibc-2.13.90-13.x86_64
gmp-4.3.2-3.fc15.x86_64 mpfr-3.0.0-4.fc15.x86_64
(gdb) p k
$1 = (const unsigned char *) 0x8 <Address 0x8 out of bounds>

Preprocessed source code attached. Flag -std=gnu++0x required.

[Bug c++/49569] -std=gnu++0x causes segmentation fault

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49569

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.06.29 09:45:13
     Ever Confirmed|0                           |1

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-06-29 09:45:13 UTC ---
Confirmed.

Program received signal SIGSEGV, Segmentation fault.
0x000000000153f74f in iterative_hash (k_in=0x8, length=4, initval=1903883354)
    at /space/rguenther/src/svn/trunk/libiberty/hashtab.c:981
981         case 4 : a+=((hashval_t)k[3]<<24);
(gdb) up
#1  0x000000000054d5aa in iterative_hash_template_arg (arg=0x2aaab3323bb0, 
    val=1903883354) at /space/rguenther/src/svn/trunk/gcc/cp/pt.c:1539
1539              val = iterative_hash_object (DECL_PARM_INDEX (arg), val);
(gdb) call debug_tree (arg)
 <parm_decl 0x2aaab3323bb0 D.143765
    type <reference_type 0x2aaab3324690
        type <record_type 0x2aaab32bb738 MD5Buf readonly addressable tree_2
needs-constructing type_1 type_4 type_5 type_6 BLK
            size <integer_cst 0x2aaaaab08780 constant 192>
            unit size <integer_cst 0x2aaaaab08740 constant 24>
            align 64 symtab 0 alias set -1 canonical type 0x2aaab32bb738 fields
<field_decl 0x2aaab32b4688 D.142718> context <translation_unit_decl
0x2aaaaaafb958 D.1>
            full-name "const class MD5Buf"
            needs-constructor needs-destructor X() X(constX&) this=(X&)
n_parents=1 use_template=0 interface-unknown
            pointer_to_this <pointer_type 0x2aaab32bb888> reference_to_this
<reference_type 0x2aaab3324690>>
        unsigned type_6 DI
        size <integer_cst 0x2aaaaaaeff40 constant 64>
        unit size <integer_cst 0x2aaaaaaeff60 constant 8>
        align 64 symtab 0 alias set -1 canonical type 0x2aaab3324690>
    readonly unsigned DI file src/playerdata.h line 66 col 112 size
<integer_cst 0x2aaaaaaeff40 64> unit size <integer_cst 0x2aaaaaaeff60 8>
    align 64 context <function_decl 0x2aaab3322e00 MD5Buf> arg-type
<reference_type 0x2aaab3324690>>

[Bug c++/49569] -std=gnu++0x causes segmentation fault

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49569

Jason Merrill <jason at gcc dot gnu.org> changed:

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

[Bug c++/49569] [4.7 regression] -std=gnu++0x causes segmentation fault

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49569

--- Comment #2 from Jason Merrill <jason at gcc dot gnu.org> 2011-07-01 00:04:02 UTC ---
Author: jason
Date: Fri Jul  1 00:03:58 2011
New Revision: 175738

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175738
Log:
    PR c++/49569
    * method.c (implicitly_declare_fn): Set DECL_PARM_LEVEL and
    DECL_PARM_INDEX on rhs parm.

Added:
    trunk/gcc/testsuite/g++.dg/cpp0x/regress/ctor1.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/method.c
    trunk/gcc/testsuite/ChangeLog

[Bug c++/49569] [4.7 regression] -std=gnu++0x causes segmentation fault

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49569

Jason Merrill <jason at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.7.0

--- Comment #3 from Jason Merrill <jason at gcc dot gnu.org> 2011-07-01 00:06:10 UTC ---
Fixed.

[Bug c++/49569] [4.7 regression] -std=gnu++0x causes segmentation fault

[dcb314 at hotmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49569

dcb <dcb314 at hotmail dot com> changed:

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

--- Comment #4 from dcb <dcb314 at hotmail dot com> 2012-07-04 19:42:51 UTC ---

I just checked trunk-20120704 and this bug seems to have reappeared.

Strange, it seemed still fixed as recently as trunk-20120701.

Suggest try original source code I supplied.

[Bug c++/49569] [4.7 regression] -std=gnu++0x causes segmentation fault

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49569

Jason Merrill <jason at gcc dot gnu.org> changed:

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

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> 2012-07-04 19:59:28 UTC ---
The new failure with the original testcase is the same as PR 53848, a different
bug than it was hitting before.