https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116052
Jason Merrill <jason at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Assignee|unassigned at gcc dot gnu.org |jason at gcc dot gnu.org
Ever confirmed|0 |1
CC| |jason at gcc dot gnu.org
Keywords|ice-on-valid-code |ice-on-invalid-code
Status|UNCONFIRMED |ASSIGNED
Last reconfirmed|2024-07-23 00:00:00 |2024-07-26
--- Comment #7 from Jason Merrill <jason at gcc dot gnu.org> ---
The problem is in stdexec/__detail/__type_traits.hpp:
// __decay_t: An efficient implementation for std::decay
#if STDEXEC_HAS_BUILTIN(__decay)
template <class _Ty>
using __decay_t = __decay(_Ty);
and then using __decay_t in function signatures, as the error message complains
about. The testcase works on GCC 14 because it doesn't have the __decay
built-in; adding 0 && to the above #if makes it work on GCC 15 as well.
I don't know why stdexec doesn't just use std::decay_t?
In any case, this is ice-on-invalid, not -valid.
