https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98452
Bug ID: 98452
Summary: error: unknown Compiled Module Interface: no such
module
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: patrick.kox at commandoregel dot be
Target Milestone: ---
When following an article by Mr. Sidwell (link:
https://accu.org/journals/overload/28/159/sidwell/#FN02) I did a copy & paste
of his example 2 sourcecode (a simple hello world progam).
When I just try to compile the hello.cc sourcefile there is an error message
(as expected):
hello.cc:5:8: error: unknown Compiled Module Interface: no such module
5 | export import <string_view>;
| ^~~~~~
In module imported at hello.cc:5:8:
/opt/gcc-11/include/c++/11.0.0/string_view: error: failed to read compiled
module: Unknown CMI mapping
/opt/gcc-11/include/c++/11.0.0/string_view: note: imports must be built before
being imported
/opt/gcc-11/include/c++/11.0.0/string_view: fatal error: returning to the gate
for a mechanical issue
compilation terminated.
To solve this he provides a compiler command to process string_view so it can
be used in this example:
The command for that is: g++ -fmodules-ts -std=c++20 -c -x c++-system-header
string_view
This works and creates a file string_view.gcm in a subdirectory of the
gcm.cache directory.
But when I try to compile hello.cc with the command that should follow this
processing of string_view the compiler prints out a lot of error messages:
hello.cc:5:8: error: unknown Compiled Module Interface: no such module
5 | export import <string_view>;
| ^~~~~~
In module imported at hello.cc:5:8:
/opt/gcc-11/include/c++/11.0.0/string_view: error: failed to read compiled
module: Unknown CMI mapping
/opt/gcc-11/include/c++/11.0.0/string_view: note: imports must be built before
being imported
/opt/gcc-11/include/c++/11.0.0/string_view: fatal error: returning to the gate
for a mechanical issue
compilation terminated.
patrick @ XPS8940 ➜ Example_02 $ g++ -fmodules-ts -std=c++20 -c -x
c++-system-header string_view
patrick @ XPS8940 ➜ Example_02 $ g++ -fmodules-ts -Wall -std=c++20 hello.cc -x
-c
In file included from /opt/gcc-11/include/c++/11.0.0/bits/move.h:57,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_pair.h:59,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:64,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/type_traits:634:31: error: conflicting global
module declaration ‘template<class ...> using __void_t = void’
634 | template<typename...> using __void_t = void;
| ^~~~~~~~
In file included from /opt/gcc-11/include/c++/11.0.0/bits/move.h:57,
from
/opt/gcc-11/include/c++/11.0.0/bits/nested_exception.h:40,
from /opt/gcc-11/include/c++/11.0.0/exception:148,
from /opt/gcc-11/include/c++/11.0.0/ios:39,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/type_traits:634:31: note: existing declaration
‘template<class ...> using __void_t = void’
634 | template<typename...> using __void_t = void;
| ^~~~~~~~
In file included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:94:26: note: during load of
binding ‘__gnu_cxx::__normal_iterator’
94 | typedef __gnu_cxx::__normal_iterator<pointer, basic_string>
iterator;
| ^~~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:76:11: error:
conflicting global module declaration ‘template<class _Tp> using
iter_reference_t = decltype (* declval<_Tp&>())’
76 | using iter_reference_t = decltype(*std::declval<_Tp&>());
| ^~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:76:11: note: existing
declaration ‘template<class _Tp> requires __dereferenceable<_Tp> using
iter_reference_t = decltype (* declval<_Tp&>())’
76 | using iter_reference_t = decltype(*std::declval<_Tp&>());
| ^~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:76:11: error:
conflicting global module declaration ‘using iter_reference_t = decltype (*
declval<_Tp&>())’
76 | using iter_reference_t = decltype(*std::declval<_Tp&>());
| ^~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:76:11: note: existing
declaration ‘using iter_reference_t = decltype (* declval<_Tp&>())’
76 | using iter_reference_t = decltype(*std::declval<_Tp&>());
| ^~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:120:17: error:
conflicting global module declaration ‘template<class _Tp> using __type =
typename std::ranges::__cust_imove::_IMove::__result::type’
120 | using __type = typename __result<_Tp>::type;
| ^~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:120:17: note: existing
declaration ‘template<class _Tp> requires __dereferenceable<_Tp> using __type
= typename std::ranges::__cust_imove::_IMove::__result::type’
120 | using __type = typename __result<_Tp>::type;
| ^~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:120:17: error:
conflicting global module declaration ‘using __type = typename
std::ranges::__cust_imove::_IMove::__result<_Tp>::type’
120 | using __type = typename __result<_Tp>::type;
| ^~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:120:17: note: existing
declaration ‘using __type = typename
std::ranges::__cust_imove::_IMove::__result<_Tp>::type’
120 | using __type = typename __result<_Tp>::type;
| ^~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:120:17: error:
conflicting global module declaration ‘using __type = typename
std::ranges::__cust_imove::_IMove::__result<_Tp&>::type’
120 | using __type = typename __result<_Tp>::type;
| ^~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:120:17: note: existing
declaration ‘using __type = typename
std::ranges::__cust_imove::_IMove::__result<_Tp&>::type’
120 | using __type = typename __result<_Tp>::type;
| ^~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:146:11: error:
conflicting global module declaration ‘template<class _Tp> using
iter_rvalue_reference_t = std::ranges::__cust_imove::_IMove::__type<_Tp&>’
146 | using iter_rvalue_reference_t
| ^~~~~~~~~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:146:11: note: existing
declaration ‘template<class _Tp> requires (__dereferenceable<_Tp>) &&
(__can_reference<typename
std::ranges::__cust_imove::_IMove::__result<_Tp&>::type>) using
iter_rvalue_reference_t = std::ranges::__cust_imove::_IMove::__type<_Tp&>’
146 | using iter_rvalue_reference_t
| ^~~~~~~~~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:146:11: error:
conflicting global module declaration ‘using iter_rvalue_reference_t =
std::ranges::__cust_imove::_IMove::__type<_Tp&>’
146 | using iter_rvalue_reference_t
| ^~~~~~~~~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:146:11: note: existing
declaration ‘using iter_rvalue_reference_t =
std::ranges::__cust_imove::_IMove::__type<_Tp&>’
146 | using iter_rvalue_reference_t
| ^~~~~~~~~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:76:11: error:
conflicting global module declaration ‘using iter_reference_t = decltype (*
declval<const _In&>())’
76 | using iter_reference_t = decltype(*std::declval<_Tp&>());
| ^~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:76:11: note: existing
declaration ‘using iter_reference_t = decltype (* declval<const _In&>())’
76 | using iter_reference_t = decltype(*std::declval<_Tp&>());
| ^~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:120:17: error:
conflicting global module declaration ‘using __type = typename
std::ranges::__cust_imove::_IMove::__result<const _In&>::type’
120 | using __type = typename __result<_Tp>::type;
| ^~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:120:17: note: existing
declaration ‘using __type = typename
std::ranges::__cust_imove::_IMove::__result<const _In&>::type’
120 | using __type = typename __result<_Tp>::type;
| ^~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:146:11: error:
conflicting global module declaration ‘using iter_rvalue_reference_t =
std::ranges::__cust_imove::_IMove::__type<const _In&>’
146 | using iter_rvalue_reference_t
| ^~~~~~~~~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:146:11: note: existing
declaration ‘using iter_rvalue_reference_t =
std::ranges::__cust_imove::_IMove::__type<const _In&>’
146 | using iter_rvalue_reference_t
| ^~~~~~~~~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:76:11: error:
conflicting global module declaration ‘using iter_reference_t = decltype (*
declval<_Iter&>())’
76 | using iter_reference_t = decltype(*std::declval<_Tp&>());
| ^~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:76:11: note: existing
declaration ‘using iter_reference_t = decltype (* declval<_Iter&>())’
76 | using iter_reference_t = decltype(*std::declval<_Tp&>());
| ^~~~~~~~~~~~~~~~
In file included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:97:20: note: during load of
binding ‘std::reverse_iterator’
97 | typedef std::reverse_iterator<const_iterator>
const_reverse_iterator;
| ^~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/string_view:41,
of module /opt/gcc-11/include/c++/11.0.0/string_view, imported at
/opt/gcc-11/include/c++/11.0.0/bits/basic_string.h:48,
included from /opt/gcc-11/include/c++/11.0.0/string:55,
from /opt/gcc-11/include/c++/11.0.0/bits/locale_classes.h:40,
from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:41,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h: In member function
‘constexpr auto std::compare_three_way::operator()(_Tp&&, _Up&&) const’:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:76:11: error:
conflicting global module declaration ‘using iter_reference_t = decltype (*
declval<_I2&>())’
76 | using iter_reference_t = decltype(*std::declval<_Tp&>());
| ^~~~~~~~~~~~~~~~
In file included from
/opt/gcc-11/include/c++/11.0.0/bits/stl_iterator_base_types.h:71,
from /opt/gcc-11/include/c++/11.0.0/bits/stl_algobase.h:65,
from /opt/gcc-11/include/c++/11.0.0/bits/char_traits.h:39,
from /opt/gcc-11/include/c++/11.0.0/ios:40,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/bits/iterator_concepts.h:76:11: note: existing
declaration ‘using iter_reference_t = decltype (* declval<_I2&>())’
76 | using iter_reference_t = decltype(*std::declval<_Tp&>());
| ^~~~~~~~~~~~~~~~
In file included from /opt/gcc-11/include/c++/11.0.0/bits/ios_base.h:46,
from /opt/gcc-11/include/c++/11.0.0/ios:42,
from /opt/gcc-11/include/c++/11.0.0/ostream:38,
from /opt/gcc-11/include/c++/11.0.0/iostream:39,
from hello.cc:3:
/opt/gcc-11/include/c++/11.0.0/system_error:142:51: note: during load of
specializations keyed to ‘template<class ... _Tp> struct std::common_reference’
142 | { return std::compare_three_way()(this, &__rhs); }
| ^
hello.cc: At global scope:
hello.cc:4:8: warning: not writing module ‘Hello’ due to errors
4 | export module Hello;
| ^~~~~~
