From 511d70738bce11a67219d0132ce725c323d00e4e Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sun, 5 May 2019 22:50:57 -0400 Subject: make fgetwc set error indicator for stream on encoding errors this is a requirement in POSIX that's omitted, and seemed potentially non-conforming, in the C standard. as such it was omitted here. however, as part of Austin Group issue #1170, the discrepancy was raised with WG14 and determined to be unintended; future versions of the C standard will require the error indicator to be set, as POSIX does. --- src/stdio/fgetwc.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'src/stdio') diff --git a/src/stdio/fgetwc.c b/src/stdio/fgetwc.c index 0801e28f..aa10b818 100644 --- a/src/stdio/fgetwc.c +++ b/src/stdio/fgetwc.c @@ -25,12 +25,18 @@ static wint_t __fgetwc_unlocked_internal(FILE *f) do { b = c = getc_unlocked(f); if (c < 0) { - if (!first) errno = EILSEQ; + if (!first) { + f->flags |= F_ERR; + errno = EILSEQ; + } return WEOF; } l = mbrtowc(&wc, (void *)&b, 1, &st); if (l == -1) { - if (!first) ungetc(b, f); + if (!first) { + f->flags |= F_ERR; + ungetc(b, f); + } return WEOF; } first = 0; -- cgit v1.2.3-70-g09d2