PROPERFMT is defined as the format string "%zu%s", which expects a size_t as input argument. When used in combination with PROPERFMTARGS, which uses the templated byte_size_in_proper_units, the byte size may not be size_t if the input is some other type.

To minimize confusion, PROPERFMTARGS should always use the size_t template specilization of byte_size_in_proper_units, to match PROPERFMT. Places that use byte_size_in_proper_units with other types can still use it, but should use their own format strings instead of PROPERFMT.