https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120453
Iain Sandoe <iains at gcc dot gnu.org> changed:
What |Removed |Added
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URL| |https://gcc.gnu.org/piperma
| |il/gcc-patches/2025-May/685
| |037.html
--- Comment #14 from Iain Sandoe <iains at gcc dot gnu.org> ---
patch posted.
Note that there is some implementation divergence in the handling of the
reduced test-case here. https://godbolt.org/z/3zrexzEas ( -DHAS_MOVE_CTOR to
add that back )
* clang-20 accepts the coroutine code.
* If we add the non-coroutine simulation of the ramp, then clang-20 also
complains - but with a different diagnostic:
"<source>:97:10: error: call to implicitly-deleted copy constructor of
'LazyTask<int>'
97 | return Gro;
| ^~~
<source>:84:41: note: copy constructor of 'LazyTask<int>' is implicitly deleted
because base class 'detail::TaskBase<int, LazyTask, int>' has a deleted copy
constructor
84 | template <typename T> struct LazyTask : detail::TaskBase<int, LazyTask,
int> {
| ^
<source>:51:8: note: copy constructor is implicitly deleted because
'TaskBase<int, QCoro::LazyTask, int>' has a user-declared move assignment
operator
51 | void operator=(TaskBase &&);
"
(rather than complaining about a default that would be ill-formed.)
