https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67632
Markus Trippelsdorf <trippels at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |redi at gcc dot gnu.org
Component|c++ |libstdc++
--- Comment #4 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
Might be a libstdc++ issue. Adding CC.
markus@x4 /tmp % g++ -c -O0 -std=c++11 t.cpp
markus@x4 /tmp % nm t.o | grep
_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEC1ERKS8_
0000000000000000 W
_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEC1ERKS8_RKS7_
markus@x4 /tmp % g++ -Wl,--no-demangle -O0 -std=c++11 t.cpp x.cpp
/tmp/ccMHoCTz.o:x.cpp:function
_Z4copyRKSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEE: error:
undefined reference to
'_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEC1ERKS8_'
collect2: error: ld returned 1 exit status
markus@x4 /tmp % c++filt
_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEC1ERKS8_
std::unordered_map<int, int, std::hash<int>, std::equal_to<int>,
std::allocator<std::pair<int const, int> >
>::unordered_map(std::unordered_map<int, int, std::hash<int>,
std::equal_to<int>, std::allocator<std::pair<int const, int> > > const&)
markus@x4 /tmp % c++filt
_ZNSt13unordered_mapIiiSt4hashIiESt8equal_toIiESaISt4pairIKiiEEEC1ERKS8_RKS7_
std::unordered_map<int, int, std::hash<int>, std::equal_to<int>,
std::allocator<std::pair<int const, int> >
>::unordered_map(std::unordered_map<int, int, std::hash<int>,
std::equal_to<int>, std::allocator<std::pair<int const, int> > > const&,
std::allocator<std::pair<int const, int> > const&)
