[Bug libstdc++/61329] New: #include <regex> and _GLIBCXX_DEBUG causes multiple symbol definition.

[pluto at agmk dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61329

            Bug ID: 61329
           Summary: #include <regex> and _GLIBCXX_DEBUG causes multiple
                    symbol definition.
           Product: gcc
           Version: 4.9.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: pluto at agmk dot net

Created attachment 32860
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32860&action=edit
testcase

% g++ t.cpp -Og -g0 -c -std=c++11 -D_GLIBCXX_DEBUG
% g++ u.cpp -Og -g0 -c -std=c++11 -D_GLIBCXX_DEBUG
% g++ t.o u.o -s -o /dev/null                     

u.o: In function
`std::__detail::__7::_State_base::_M_print(std::__7::basic_ostream<char,
std::__7::char_traits<char> >&) const':
u.cpp:(.text+0x0): multiple definition of
`std::__detail::__7::_State_base::_M_print(std::__7::basic_ostream<char,
std::__7::char_traits<char> >&) const'
t.o:t.cpp:(.text+0x0): first defined here
u.o: In function
`std::__detail::__7::_State_base::_M_dot(std::__7::basic_ostream<char,
std::__7::char_traits<char> >&, long) const':
u.cpp:(.text+0x1ae): multiple definition of
`std::__detail::__7::_State_base::_M_dot(std::__7::basic_ostream<char,
std::__7::char_traits<char> >&, long) const'
t.o:t.cpp:(.text+0x1ae): first defined here
collect2: error: ld returned 1 exit status


% g++ -v                     
Using built-in specs.
COLLECT_GCC=/ahome/pawels/dvm/master/toolchain/gcc/sysroot/x86_64-gnu-linux/bin/x86_64-gnu-linux-g++
COLLECT_LTO_WRAPPER=/home/pawels/dvm/master/toolchain/gcc/sysroot/x86_64-gnu-linux/bin/../lib64/gcc/x86_64-gnu-linux/4.9.1/lto-wrapper
Target: x86_64-gnu-linux
Configured with: ../configure --target=x86_64-gnu-linux --with-arch=x86-64
--prefix=/home/pawels/toolchain.git/gcc/sysroot/x86_64-gnu-linux
--with-sysroot=/home/pawels/toolchain.git/gcc/sysroot/x86_64-gnu-linux
--libdir=/home/pawels/toolchain.git/gcc/sysroot/x86_64-gnu-linux/lib64
--libexecdir=/home/pawels/toolchain.git/gcc/sysroot/x86_64-gnu-linux/lib64
--with-slibdir=/home/pawels/toolchain.git/gcc/sysroot/x86_64-gnu-linux/lib64
--with-gmp-include=/home/pawels/toolchain.git/gcc/x86_64-gnu-linux/gcc-math-runtime/include
--with-gmp-lib=/home/pawels/toolchain.git/gcc/x86_64-gnu-linux/gcc-math-runtime/lib
--with-mpfr-include=/home/pawels/toolchain.git/gcc/x86_64-gnu-linux/gcc-math-runtime/include
--with-mpfr-lib=/home/pawels/toolchain.git/gcc/x86_64-gnu-linux/gcc-math-runtime/lib
--with-mpc-include=/home/pawels/toolchain.git/gcc/x86_64-gnu-linux/gcc-math-runtime/include
--with-mpc-lib=/home/pawels/toolchain.git/gcc/x86_64-gnu-linux/gcc-math-runtime/lib
--with-linker-hash-style=both --disable-multilib --enable-nls --disable-libssp
--disable-libquadmath --disable-libitm --enable-tls
--enable-libstdcxx-allocator=new --enable-extern-template
--enable-libstdcxx-time=rt --enable-libstdcxx-threads
--enable-symvers=gnu-versioned-namespace --disable-libstdcxx-pch --enable-lto
--enable-plugin --enable-c99 --enable-long-long --enable-linux-futex
--enable-threads=posix --enable-shared --with-pic --enable-gold
--enable-libgomp --enable-__cxa_atexit --disable-initfini-array
--disable-gnu-unique-object --enable-languages=c,c++ --enable-checking=release
--with-long-double-128 --disable-cld --disable-bootstrap
Thread model: posix
gcc version 4.9.1 20140505 (prerelease) (GCC)