https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119755
Bug ID: 119755
Summary: type_traits:828:11: fatal error: failed to load
pendings for 'std::__is_one_of'
Product: gcc
Version: unknown
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
Given a file with the single line:
#include <stdbit.h>
Using a recent trunk:
g++ -fsearch-include-path ../include/c++/15.0.1/bits/std.compat.cc
-std=gnu++26 -x c++ - -fmodules
It fails with:
In module imported at
/home/jwakely/gcc/15/include/c++/15.0.1/bits/std.compat.cc:30:8:
/home/jwakely/gcc/15/include/c++/15.0.1/type_traits: In substitution of
‘template<class _Tp, class ... _Types> using std::__is_one_of =
std::__or_<std::is_same<_Tp, _Types>...> [with _Tp = unsigned char; _Types =
{unsigned char, short unsigned int, unsigned int, long unsigned int, long long
unsigned int, __int128 unsigned}]’:
/home/jwakely/gcc/15/include/c++/15.0.1/type_traits:828:11: required by
substitution of ‘template<class _Tp> using std::__is_unsigned_integer =
std::__is_one_of<typename std::remove_cv< <template-parameter-1-1> >::type,
unsigned char, short unsigned int, unsigned int, long unsigned int, long long
unsigned int, __int128 unsigned> [with _Tp = unsigned char]’
828 | using __is_unsigned_integer = __is_one_of<__remove_cv_t<_Tp>,
| ^~~~~~~~~~~~~~~~~~~~~
/home/jwakely/gcc/15/include/c++/15.0.1/bit:397:62: required from ‘unsigned
int __gnu_cxx::stdc_leading_zeros(_Tp) [with _Tp = unsigned char]’
397 | concept __unsigned_integer = __is_unsigned_integer<_Tp>::value;
| ^~~~~
/home/jwakely/gcc/15/include/c++/15.0.1/stdbit.h:63:28: required from here
63 | { return stdc_leading_zeros(__value); }
| ~~~~~~~~~~~~~~~~~~^~~~~~~~~
std: error: failed to read compiled module cluster 4625: Bad file data
std: note: compiled module file is ‘gcm.cache/std.gcm’
In file included from /home/jwakely/gcc/15/include/c++/15.0.1/concepts:48,
from /home/jwakely/gcc/15/include/c++/15.0.1/bit:38,
from /home/jwakely/gcc/15/include/c++/15.0.1/stdbit.h:33,
from
/home/jwakely/gcc/15/include/c++/15.0.1/bits/std.compat.cc:26:
/home/jwakely/gcc/15/include/c++/15.0.1/type_traits:828:11: fatal error: failed
to load pendings for ‘std::__is_one_of’
828 | using __is_unsigned_integer = __is_one_of<__remove_cv_t<_Tp>,
| ^~~~~~~~~~~~~~~~~~~~~
compilation terminated.
