https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116731
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Last reconfirmed| |2024-09-16
Keywords| |diagnostic
Status|UNCONFIRMED |NEW
Ever confirmed|0 |1
--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is the condition, so it is indeed using trivially copyable:
/* Since small trivially copyable types are cheap to copy, we suppress the
warning for them. 64B is a common size of a cache line. */
if (TREE_CODE (TYPE_SIZE_UNIT (type)) != INTEGER_CST
|| (tree_to_uhwi (TYPE_SIZE_UNIT (type)) <= 64
&& trivially_copyable_p (type)))
return;
I agree that the warning seems unhelpful in this case. The fact that
std::pair's copy assignment operator is not trivial is irrelevant here, we're
not doing any assignment.
