https://gcc.gnu.org/bugzilla/show_bug.cgi?id=117905
Bug ID: 117905
Summary: PSTL algos in<numeric> require copy-constructible
Product: gcc
Version: 15.0
Status: UNCONFIRMED
Keywords: rejects-valid
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: redi at gcc dot gnu.org
Target Milestone: ---
All of reduce, transform_reduce, exclusive_scan, and inclusive_scan,
transform_exclusive_scan, and transform_inclusive_scan only have a precondition
on the type of init that it meets the Cpp17MoveConstructible requirements, so
when passing it to the next internal function it needs to be moved, not copied.
Also when creating local variables on the stack, and when returning as part of
a pair.