https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96942
--- Comment #16 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Alexander Monakov from comment #14) > > It adds 11 bytes to the size given to the constructor (for its internal > > bookkeeping) and then rounds up to a power of two. > > What is the purpose of this rounding up? To request a power of two size from the upstream resource, so that we don't e.g. ask for 4090 bytes and waste the end of a page. It might make more sense to round up to a page boundary, or some other size instead.
