doesn't compile with gcc 11
hi,
it doesn't seem to compile (tried with latest master and 0.2.6) neither with gcc 11 nor with gcc 10. I am using Ubuntu 20.04. this is the error I have:
[ 16%] Building CXX object CMakeFiles/gccdiag.dir/src/main.cpp.o
In file included from /usr/include/c++/11/unordered_map:46,
from /usr/include/c++/11/functional:61,
from /home/ori/gccdiag/include/gccdiag/compilation_database.hpp:4,
from /home/ori/gccdiag/src/main.cpp:1:
/usr/include/c++/11/bits/hashtable.h: In instantiation of ‘std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits>::~_Hashtable()[with _Key = std::filesystem::__cxx11::path; _Value = std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry>; _Alloc = std::allocator<std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<std::filesystem::__cxx11::path>; _Hash = std::hash<std::filesystem::__cxx11::path>; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; _RehashPolicy = std::__detail::_Prime_rehash_policy; _Traits = std::__detail::_Hashtable_traits<true, false, true>]’:
/usr/include/c++/11/bits/unordered_map.h:102:11: required from here
/usr/include/c++/11/bits/hashtable.h:1511:5: error: use of deleted function ‘std::__detail::_Hashtable_base<std::filesystem::__cxx11::path, std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry>, std::__detail::_Select1st, std::equal_to<std::filesystem::__cxx11::path>, std::hash<std::filesystem::__cxx11::path>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >::~_Hashtable_base()’
1511 | }
| ^
In file included from /usr/include/c++/11/bits/hashtable.h:35,
from /usr/include/c++/11/unordered_map:46,
from /usr/include/c++/11/functional:61,
from /home/ori/gccdiag/include/gccdiag/compilation_database.hpp:4,
from /home/ori/gccdiag/src/main.cpp:1:
/usr/include/c++/11/bits/hashtable_policy.h:1559:12: note: ‘std::__detail::_Hashtable_base<std::filesystem::__cxx11::path, std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry>, std::__detail::_Select1st, std::equal_to<std::filesystem::__cxx11::path>, std::hash<std::filesystem::__cxx11::path>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Hashtable_traits<true, false, true> >::~_Hashtable_base()’ is implicitly deleted because the default definition would be ill-formed:
1559 | struct _Hashtable_base
| ^~~~~~~~~~~~~~~
/usr/include/c++/11/bits/hashtable_policy.h:1559:12: error: use of deleted function ‘std::__detail::_Hash_code_base<std::filesystem::__cxx11::path, std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry>, std::__detail::_Select1st, std::hash<std::filesystem::__cxx11::path>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, true>::~_Hash_code_base()’
/usr/include/c++/11/bits/hashtable_policy.h:1187:12: note: ‘std::__detail::_Hash_code_base<std::filesystem::__cxx11::path, std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry>, std::__detail::_Select1st, std::hash<std::filesystem::__cxx11::path>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, true>::~_Hash_code_base()’ is implicitly deleted because the default definition would be ill-formed:
1187 | struct _Hash_code_base
| ^~~~~~~~~~~~~~~
/usr/include/c++/11/bits/hashtable_policy.h:1187:12: error: use of deleted function ‘std::__detail::_Hashtable_ebo_helper<1, std::hash<std::filesystem::__cxx11::path>, true>::~_Hashtable_ebo_helper()’
/usr/include/c++/11/bits/hashtable_policy.h:1123:12: note: ‘std::__detail::_Hashtable_ebo_helper<1, std::hash<std::filesystem::__cxx11::path>, true>::~_Hashtable_ebo_helper()’ is implicitly deleted because the default definition would be ill-formed:
1123 | struct _Hashtable_ebo_helper<_Nm, _Tp, true>
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/hashtable_policy.h:1123:12: error: use of deleted function ‘std::hash<std::filesystem::__cxx11::path>::~hash()’
In file included from /usr/include/c++/11/string_view:42,
from /usr/include/c++/11/bits/basic_string.h:48,
from /usr/include/c++/11/string:55,
from /usr/include/c++/11/stdexcept:39,
from /usr/include/c++/11/system_error:41,
from /usr/include/c++/11/bits/fs_fwd.h:35,
from /usr/include/c++/11/filesystem:44,
from /home/ori/gccdiag/include/gccdiag/compilation_database.hpp:3,
from /home/ori/gccdiag/src/main.cpp:1:
/usr/include/c++/11/bits/functional_hash.h:102:12: note: ‘std::hash<std::filesystem::__cxx11::path>::~hash()’ is implicitly deleted because the default definition would be ill-formed:
102 | struct hash : __hash_enum<_Tp>
| ^~~~
/usr/include/c++/11/bits/functional_hash.h:102:12: error: ‘std::__hash_enum<_Tp, <anonymous> >::~__hash_enum() [with _Tp = std::filesystem::__cxx11::path; bool <anonymous> = false]’ isprivate within this context
/usr/include/c++/11/bits/functional_hash.h:84:7: note: declared private here
84 | ~__hash_enum();
| ^
In file included from /usr/include/c++/11/bits/hashtable.h:35,
from /usr/include/c++/11/unordered_map:46,
from /usr/include/c++/11/functional:61,
from /home/ori/gccdiag/include/gccdiag/compilation_database.hpp:4,
from /home/ori/gccdiag/src/main.cpp:1:
/usr/include/c++/11/bits/hashtable_policy.h: In instantiation of ‘std::__detail::_Hash_code_base<_Key, _Value, _ExtractKey, _Hash, _RangeHash, _Unused, __cache_hash_code>::__hash_code std::__detail::_Hash_code_base<_Key, _Value, _ExtractKey, _Hash, _RangeHash, _Unused, __cache_hash_code>::_M_hash_code(const _Key&) const [with _Key = std::filesystem::__cxx11::path; _Value = std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry>; _ExtractKey = std::__detail::_Select1st; _Hash = std::hash<std::filesystem::__cxx11::path>; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; bool __cache_hash_code = true; std::__detail::_Hash_code_base<_Key, _Value, _ExtractKey, _Hash, _RangeHash, _Unused, __cache_hash_code>::__hash_code = long unsigned int]’:
/usr/include/c++/11/bits/hashtable.h:1570:46: required from ‘std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits>::iterator std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits>::find(const key_type&) [with _Key = std::filesystem::__cxx11::path; _Value= std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry>; _Alloc = std::allocator<std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry> >; _ExtractKey = std::__detail::_Select1st; _Equal = std::equal_to<std::filesystem::__cxx11::path>; _Hash = std::hash<std::filesystem::__cxx11::path>; _RangeHash = std::__detail::_Mod_range_hashing; _Unused = std::__detail::_Default_ranged_hash; _RehashPolicy = std::__detail::_Prime_rehash_policy; _Traits = std::__detail::_Hashtable_traits<true, false, true>;std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits>::iterator = std::__detail::_Insert_base<std::filesystem::__cxx11::path, std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry>, std::allocator<std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry> >, std::__detail::_Select1st, std::equal_to<std::filesystem::__cxx11::path>, std::hash<std::filesystem::__cxx11::path>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, false, true> >::iterator; std::_Hashtable<_Key, _Value, _Alloc, _ExtractKey, _Equal, _Hash, _RangeHash, _Unused, _RehashPolicy, _Traits>::key_type = std::filesystem::__cxx11::path]’
/usr/include/c++/11/bits/unordered_map.h:869:25: required from ‘std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::iterator std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::find(const key_type&) [with _Key = std::filesystem::__cxx11::path; _Tp = gccdiag::CompilationDatabaseEntry; _Hash = std::hash<std::filesystem::__cxx11::path>; _Pred = std::equal_to<std::filesystem::__cxx11::path>; _Alloc = std::allocator<std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry> >; std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::iterator = std::__detail::_Insert_base<std::filesystem::__cxx11::path, std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry>, std::allocator<std::pair<const std::filesystem::__cxx11::path, gccdiag::CompilationDatabaseEntry> >, std::__detail::_Select1st, std::equal_to<std::filesystem::__cxx11::path>, std::hash<std::filesystem::__cxx11::path>, std::__detail::_Mod_range_hashing, std::__detail::_Default_ranged_hash, std::__detail::_Prime_rehash_policy, std::__detail::_Hashtable_traits<true, false, true> >::iterator; std::unordered_map<_Key, _Tp, _Hash, _Pred, _Alloc>::key_type = std::filesystem::__cxx11::path]’
/home/ori/gccdiag/src/main.cpp:144:31: required from here
/usr/include/c++/11/bits/hashtable_policy.h:1215:23: error: static assertion failed: hash function must be invocable with an argument of key type
1215 | static_assert(__is_invocable<const _Hash&, const _Key&>{},
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/c++/11/bits/hashtable_policy.h:1215:23: note: ‘std::__is_invocable<const std::hash<std::filesystem::__cxx11::path>&, const std::filesystem::__cxx11::path&>{}’ evaluates tofalse
/usr/include/c++/11/bits/hashtable_policy.h:1217:25: error: no match for call to ‘(const std::hash<std::filesystem::__cxx11::path>) (const std::filesystem::__cxx11::path&)’
1217 | return _M_hash()(__k);
| ~~~~~~~~~^~~~~
make[2]: *** [CMakeFiles/gccdiag.dir/build.make:76: CMakeFiles/gccdiag.dir/src/main.cpp.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:108: CMakeFiles/gccdiag.dir/all] Error 2
make: *** [Makefile:156: all] Error 2
Edited by Benjamin Papin