K 10
svn:author
V 4
ache
K 8
svn:date
V 27
2016-09-05T01:57:32.353331Z
K 7
svn:log
V 225
MFC r305241

fgetwc(3) may set both __SEOF and __SERR at once (in case of incomplete
sequence near EOF), so we can't just check for
(wc == WEOF && !__sfeof(fp)) and must relay on __sferror(fp) with
__SERR clearing/restoring.

END