[Bug c++/47478] New: internal compiler error

[Bug c++/47478] New: internal compiler error

[aleaverfay at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

           Summary: internal compiler error
           Product: gcc
           Version: 4.4.5
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: aleaverfay@gmail.com


This file compiles just fine with earlier versions of G++.  The compiler error
appears at the end of a function which is the last function in the file.

$ g++ -v
Using built-in specs.
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu/Linaro
4.4.4-14ubuntu5' --with-bugurl=file:///usr/share/doc/gcc-4.4/README.Bugs
--enable-languages=c,c++,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.4 --enable-shared --enable-multiarch
--enable-linker-build-id --with-system-zlib --libexecdir=/usr/lib
--without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.4 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug --enable-objc-gc
--disable-werror --with-arch-32=i686 --with-tune=generic
--enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu
--target=x86_64-linux-gnu
Thread model: posix
gcc version 4.4.5 (Ubuntu/Linaro 4.4.4-14ubuntu5) 

...

Command line:

$ g++ -save-temps -o
build/src/release/linux/2.6/64/x86/gcc/protocols/loophash/LoopHashMap.os -c
-std=c++98 -pipe -ffor-scope -W -Wall -pedantic -Wno-long-long -O3 -ffast-math
-funroll-loops -finline-functions -finline-limit=20000 -s -Wno-unused-variable
-fPIC -DNDEBUG -Isrc -Iexternal/include -Isrc/platform/linux/64/gcc
-Isrc/platform/linux/64 -Isrc/platform/linux -Iexternal/boost_1_38_0
-I/usr/local/include -I/usr/include src/protocols/loophash/LoopHashMap.cc 
g++: warning: -pipe ignored because -save-temps specified
In file included from src/protocols/loophash/LoopHashMap.cc:18:
src/protocols/loophash/LoopHashMap.hh:120: warning: type qualifiers ignored on
function return type
src/protocols/loophash/LoopHashMap.cc:360: warning: type qualifiers ignored on
function return type
In file included from external/boost_1_38_0/boost/unordered_map.hpp:17,
                 from src/protocols/loophash/LoopHashMap.hh:22,
                 from src/protocols/loophash/LoopHashMap.cc:18:
external/boost_1_38_0/boost/unordered/detail/hash_table_impl.hpp: In member
function ‘typename
boost::unordered_detail::hash_types_equivalent_keys<std::pair<const Key, T>,
Key, Hash, Pred, Alloc>::iterator boost::unordered_multimap<Key, T, Hash, Pred,
Alloc>::insert(const std::pair<const Key, T>&) [with Key = long unsigned int, T
= long unsigned int, Hash = protocols::match::bin_index_hasher, Pred =
std::equal_to<long unsigned int>, Alloc = std::allocator<std::pair<const long
unsigned int, long unsigned int> >]’:
external/boost_1_38_0/boost/unordered/detail/hash_table_impl.hpp:101: warning:
‘<anonymous>’ may be used uninitialized in this function
external/boost_1_38_0/boost/unordered/detail/hash_table_impl.hpp:210: note:
‘<anonymous>’ was declared here
src/protocols/loophash/LoopHashMap.cc: In member function ‘void
protocols::loophash::LoopHashMap::read_db(std::string, std::pair<long unsigned
int, long unsigned int>, std::map<long unsigned int, bool, std::less<long
unsigned int>, std::allocator<std::pair<const long unsigned int, bool> > >&)’:
src/protocols/loophash/LoopHashMap.cc:436: internal compiler error:
Segmentation fault
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-4.4/README.Bugs> for instructions.

[Bug c++/47478] internal compiler error

[aleaverfay at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

--- Comment #1 from Andrew Leaver-Fay <aleaverfay at gmail dot com> 2011-01-26 17:30:58 UTC ---
Created attachment 23135
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23135
-save-temps file (.ii) that produces this crash (too big to upload without
bzipping it -- sorry!)

[Bug c++/47478] internal compiler error

[aleaverfay at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

--- Comment #2 from Andrew Leaver-Fay <aleaverfay at gmail dot com> 2011-01-26 18:21:36 UTC ---
I'd love a suggestion on how the code could be changed so that I no longer get
this segfault.

[Bug c++/47478] internal compiler error

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2011.01.26 19:13:11
     Ever Confirmed|0                           |1

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2011-01-26 19:13:11 UTC ---
confirmed

for 4.4.3 I get an ICE with
g++ LoopHashMap.ii   -O2  -funroll-loops -finline-functions -finline-limit=488
but not with
g++ LoopHashMap.ii   -O2  -funroll-loops -finline-functions -finline-limit=487

(the only difference is the inline-limit)

(In reply to comment #2)
> I'd love a suggestion on how the code could be changed so that I no longer get
> this segfault.

use a lower value for -finline-limit

[Bug c++/47478] [4.4/4.5 Regression] internal compiler error

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[4.4/4.5/4.6 Regression]    |[4.4/4.5 Regression]
                   |internal compiler error     |internal compiler error

--- Comment #4 from H.J. Lu <hjl.tools at gmail dot com> 2011-01-26 21:20:06 UTC ---
Works on 4.6.

[Bug c++/47478] [4.4 Regression] internal compiler error

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
      Known to work|                            |4.5.2, 4.6.0
            Summary|[4.4/4.5 Regression]        |[4.4 Regression] internal
                   |internal compiler error     |compiler error
      Known to fail|                            |4.4.5

--- Comment #5 from H.J. Lu <hjl.tools at gmail dot com> 2011-01-26 21:23:25 UTC ---
Works in 4.5.2.

[Bug c++/47478] [4.4 Regression] internal compiler error

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jason at redhat dot com

--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> 2011-01-27 01:15:17 UTC ---
It is caused by revision 142056:

http://gcc.gnu.org/ml/gcc-cvs/2008-11/msg00765.html

and is fixed/hidden by revision 145204:

http://gcc.gnu.org/ml/gcc-cvs/2009-03/msg00711.html

[Bug c++/47478] [4.4 Regression] internal compiler error

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |4.4.6

--- Comment #7 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-01-27 11:18:17 UTC ---
Looks somewhat familiar:

Program received signal SIGSEGV, Segmentation fault.
0x00000000007648d5 in cancel_loop_tree (loop=0xa5a5a5a5a5a5a5a5)
    at /space/rguenther/src/svn/gcc-4_4-branch/gcc/cfgloop.c:1305
1305      while (loop->inner)

#0  0x00000000007648d5 in cancel_loop_tree (loop=0xa5a5a5a5a5a5a5a5)
    at /space/rguenther/src/svn/gcc-4_4-branch/gcc/cfgloop.c:1305
#1  0x00000000007648d1 in cancel_loop_tree (loop=0x7fffeeaee7e0)
    at /space/rguenther/src/svn/gcc-4_4-branch/gcc/cfgloop.c:1306
#2  0x00000000007677da in remove_path (e=0x7fffee3f2040)
    at /space/rguenther/src/svn/gcc-4_4-branch/gcc/cfgloopmanip.c:353
#3  0x00000000009b7afe in peel_loop_completely (loop=0x7fffeeaee480)
    at /space/rguenther/src/svn/gcc-4_4-branch/gcc/loop-unroll.c:506
#4  0x00000000009b73bd in peel_loops_completely (flags=2)
    at /space/rguenther/src/svn/gcc-4_4-branch/gcc/loop-unroll.c:248
#5  0x00000000009b6aaf in unroll_and_peel_loops (flags=2)
    at /space/rguenther/src/svn/gcc-4_4-branch/gcc/loop-unroll.c:157
#6  0x00000000009ac87e in rtl_unroll_and_peel_loops ()

Likely a dup of PR42229, fixed with

2009-12-02  Richard Guenther  <rguenther@suse.de>

        PR middle-end/42229
        * cfgloopmanip.c (remove_path): Avoid cancelling loops twice.

[Bug rtl-optimization/47478] [4.4 Regression] internal compiler error

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

Mikael Pettersson <mikpe at it dot uu.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mikpe at it dot uu.se

--- Comment #8 from Mikael Pettersson <mikpe at it dot uu.se> 2011-01-29 16:15:57 UTC ---
(In reply to comment #7)
> Likely a dup of PR42229

Backporting the PR42229 fix to gcc-4.4.5 eliminates the ICE for both this test
case and the PR42229 one.

[Bug rtl-optimization/47478] [4.4 Regression] internal compiler error

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|4.4.6                       |4.4.7

[Bug rtl-optimization/47478] [4.4 Regression] internal compiler error

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

Jakub Jelinek <jakub at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |jakub at gcc dot gnu.org
         Resolution|                            |FIXED
   Target Milestone|4.4.7                       |4.5.2

--- Comment #9 from Jakub Jelinek <jakub at gcc dot gnu.org> 2012-03-13 13:26:07 UTC ---
Fixed in 4.5+, 4.4 is no longer supported.

[Bug rtl-optimization/47478] [4.4 Regression] internal compiler error

[jackie.rosen at hushmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47478

Jackie Rosen <jackie.rosen at hushmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jackie.rosen at hushmail dot com

--- Comment #10 from Jackie Rosen <jackie.rosen at hushmail dot com> ---
*** Bug 260998 has been marked as a duplicate of this bug. ***
Seen from the domain http://volichat.com
Page where seen: http://volichat.com/adult-chat-rooms
Marked for reference. Resolved as fixed @bugzilla.