[Bug libstdc++/47724] New: Regex string anchors cause segfault

["naddiseo at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47724

           Summary: Regex string anchors cause segfault
           Product: gcc
           Version: 4.6.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: naddiseo@gmail.com


Created attachment 23329
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=23329
Test case

Using the regex anchors "^" or "$" cause a segfault.


$ /usr/lib/gcc-snapshot/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/usr/lib/gcc-snapshot/bin/gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc-snapshot/libexec/gcc/x86_64-linux-gnu/4.6.0/lto-wrapper
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu
20101004-0ubuntu1' --with-bugurl=file:///usr/share/doc/gcc-snapshot/README.Bugs
--enable-languages=c,ada,c++,fortran,objc,obj-c++
--prefix=/usr/lib/gcc-snapshot --enable-shared --enable-multiarch
--enable-linker-build-id --with-system-zlib --disable-nls --with-sysroot=/
--enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes
--enable-plugin --enable-gold --with-plugin-ld=ld.gold --enable-objc-gc
--disable-werror --with-arch-32=i686 --with-tune=generic --enable-checking=yes
--build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix
gcc version 4.6.0 20101004 (experimental) [trunk revision 164952] (Ubuntu
20101004-0ubuntu1)