[Bug c++/53893] New: segfault with invalid c++ code

[Bug c++/53893] New: segfault with invalid c++ code

[pipping at exherbo dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53893

             Bug #: 53893
           Summary: segfault with invalid c++ code
    Classification: Unclassified
           Product: gcc
           Version: 4.7.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: pipping@exherbo.org


The following piece of invalid C++0x code yields

nannormtest.ii: In member function ‘double std::DenseVector::infinity_norm()
const’:
nannormtest.ii:8:80: internal compiler error: Segmentation fault

[Bug c++/53893] segfault with invalid c++ code

[pipping at exherbo dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53893

--- Comment #1 from Elias Pipping <pipping at exherbo dot org> 2012-07-08 11:21:57 UTC ---
Created attachment 27762
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27762
test case

[Bug c++/53893] segfault with invalid c++ code

[pipping at exherbo dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53893

--- Comment #2 from Elias Pipping <pipping at exherbo dot org> 2012-07-08 11:43:11 UTC ---
% g++-4.7 -v
Using built-in specs.
COLLECT_GCC=g++-4.7
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.7.1/lto-wrapper
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/paludis/build/sys-devel-gcc-4.7.1/work/gcc-4.7.1/configure
--prefix=/usr --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu
--mandir=/usr/share/man --infodir=/usr/share/info --datadir=/usr/share
--sysconfdir=/etc --localstatedir=/var/lib --disable-dependency-tracking
--disable-silent-rules --enable-fast-install --libdir=/usr/lib64
--disable-multilib --libdir=/usr/lib64 --enable-clocale=gnu
--enable-languages=c++,fortran --enable-libstdcxx-pch=yes --enable-nls
--program-suffix=-4.7 --with-libelf --with-pkgversion='Exherbo gcc-4.7.1'
--with-system-zlib --disable-graphite --disable-cloog-backend --without-cloog
--without-ppl --disable-libgomp --disable-libssp
Thread model: posix
gcc version 4.7.1 (Exherbo gcc-4.7.1) 
% 

% g++-4.7 -std=c++0x nannormtest.ii
nannormtest.ii: In member function ‘double std::DenseVector::infinity_norm()
const’:
nannormtest.ii:8:80: 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.
%

[Bug c++/53893] segfault with invalid c++ code

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53893

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-invalid-code
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2012-07-08
     Ever Confirmed|0                           |1

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-07-08 12:01:08 UTC ---
Confirmed, trunk gives this instead of a segfault:

inv.cc: In member function ‘double std::DenseVector::infinity_norm() const’:
inv.cc:8:80: internal compiler error: tree check: expected tree that contains
‘decl minimal’ structure, have ‘nop_expr’ in decl_linkage, at cp/tree.c:3198
       return infinity_norm_TEMPLATE<( double (*)( double)) std::abs< double>
>();
                                                                               
^
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.

[Bug c++/53893] segfault with invalid c++ code

[pipping at exherbo dot org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53893

Elias Pipping <pipping at exherbo dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #27762|0                           |1
        is obsolete|                            |

--- Comment #4 from Elias Pipping <pipping at exherbo dot org> 2012-07-08 14:04:11 UTC ---
Created attachment 27764
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=27764
test case

I've reduced it a bit and tried to get it closer to valid code.

[Bug c++/53893] segfault with invalid c++ code

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53893

--- Comment #5 from Paolo Carlini <paolo.carlini at oracle dot com> 2012-10-14 17:44:37 UTC ---
Note: the code per-se isn't C++11, besides the trivial >>, the crash is ;) That
is, only happens with -std=c++11.

[Bug c++/53893] segfault with invalid c++ code

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53893

Paolo Carlini <paolo.carlini at oracle dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE

--- Comment #6 from Paolo Carlini <paolo.carlini at oracle dot com> 2013-01-26 10:59:01 UTC ---
Dup.

*** This bug has been marked as a duplicate of bug 52819 ***