[Bug libstdc++/57953] New: no C++11 compliant std::ios_base::failure found

[unixway.drive+gcc at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57953

            Bug ID: 57953
           Summary: no C++11 compliant std::ios_base::failure found
           Product: gcc
           Version: 4.8.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: unixway.drive+gcc at gmail dot com

§27.5.3 states that "ios_base defines <...> a class failure derived from
system_error". The only std::ios_base::failure I see in a libstdc++ is a
pre-C++11 ones.

$ g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-unknown-linux-gnu/4.8.1/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: /build/gcc/src/gcc-4.8.1/configure --prefix=/usr
--libdir=/usr/lib --libexecdir=/usr/lib --mandir=/usr/share/man
--infodir=/usr/share/info --with-bugurl=https://bugs.archlinux.org/
--enable-languages=c,c++,ada,fortran,go,lto,objc,obj-c++ --enable-shared
--enable-threads=posix --with-system-zlib --enable-__cxa_atexit
--disable-libunwind-exceptions --enable-clocale=gnu --disable-libstdcxx-pch
--enable-gnu-unique-object --enable-linker-build-id --enable-cloog-backend=isl
--disable-cloog-version-check --enable-lto --enable-gold --enable-ld=default
--enable-plugin --with-plugin-ld=ld.gold --with-linker-hash-style=gnu
--disable-install-libiberty --disable-multilib --disable-libssp
--disable-werror --enable-checking=release
Thread model: posix
gcc version 4.8.1 (GCC) 

$ g++ -std=c++11 test.cpp
test.cpp: In function ‘int main(int, char**)’:
test.cpp:10:18: error: ‘class std::ios_base::failure’ has no member named
‘code’
   std::cout << e.code().value() << std::endl;