http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59712
Bug ID: 59712
Summary: unordered_map : clang fails with "member access into
incomplete type"
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: major
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: oparcollet.triqs at gmail dot com
The code :
#include <unordered_map>
int main() {
std::unordered_map<int,int> M;
}
using :
- libstdc++ of gcc 4.9.0, svn r206386.
- clang3.4, -std=c++11 mode
- Ubuntu 12.04
fails with clang (while it compiles with gcc 4.9.0) due to
a member access into one incomplete type in a template...
If one comments this static_assert in the hashtable.h:267, clang compiles the
code correctly.
Error :
LAB:~/C++ $ ~/CLANG/install/bin/clang++ -std=c++11 bug_hash_clang1y.cpp
In file included from bug_hash_clang1y.cpp:1:
In file included from
/home/..../gcc4.9/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../../include/c++/4.9.0/unordered_map:47:
/home/.../gcc4.9/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../../include/c++/4.9.0/bits/hashtable.h:267:9:
error: member access into
incomplete type 'const std::_Hashtable<int, std::pair<const int, int>,
std::allocator<std::pair<const int, int> >,
std::__detail::_Select1st, std::equal_to<int>, std::hash<int>,
std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash,
std::__detail::_Prime_rehash_policy,
std::__detail::_Hashtable_traits<false, false, true> >'
._M_bucket_index((const __node_type*)nullptr,
^
/home/.../gcc4.9/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../../include/c++/4.9.0/bits/unordered_map.h:101:18:
note: in instantiation
of template class 'std::_Hashtable<int, std::pair<const int, int>,
std::allocator<std::pair<const int, int> >,
std::__detail::_Select1st, std::equal_to<int>, std::hash<int>,
std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash,
std::__detail::_Prime_rehash_policy,
std::__detail::_Hashtable_traits<false, false, true> >' requested here
_Hashtable _M_h;
^
bug_hash_clang1y.cpp:3:30: note: in instantiation of template class
'std::unordered_map<int, int, std::hash<int>, std::equal_to<int>,
std::allocator<std::pair<const int, int> > >' requested here
std::unordered_map<int,int> M;
^
/home/..../gcc4.9/lib/gcc/x86_64-unknown-linux-gnu/4.9.0/../../../../include/c++/4.9.0/bits/hashtable.h:174:11:
note: definition of
'std::_Hashtable<int, std::pair<const int, int>,
std::allocator<std::pair<const int, int> >, std::__detail::_Select1st,
std::equal_to<int>, std::hash<int>, std::__detail::_Mod_range_hashing,
std::__detail::_Default_ranged_hash,
std::__detail::_Prime_rehash_policy,
std::__detail::_Hashtable_traits<false, false, true> >' is not complete until
the closing '}'
class _Hashtable
^
1 error generated.
