_IOFBF

_IOFBF 0

Description

The following three definitions are for ANSI C, which took them from System V, which stupidly took internal interface macros and made them official arguments to setvbuf(), without renaming them. Hence, these ugly _IOxxx names are *supposed* to appear in user code.

Although these happen to match their counterparts above, the implementation does not rely on that (so these could be renumbered).