https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107532
--- Comment #18 from Marek Polacek <mpolacek at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #16) > Span is a view, so it is like reference-wrapper. The lifetime of the > underlying data is not tied to the lifetime of the Span. Aha, I could add a check for std::span but that wouldn't help, because here it's a custom-made Span. And I don't think there's a pattern I could look for that would tell us "this is a std::span-like class". :/ (In reply to Barnabás Pőcze from comment #17) > The simple test case with std::span still triggers the warning: > https://gcc.godbolt.org/z/43cKxdqr3. I feel that without deeper code > analysis such a warning will generate too many false positives and people > will simply turn it off. There really haven't been that many, except this and one with range-based for loops.
