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-rw-r--r--src/stdio/fgetws.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/src/stdio/fgetws.c b/src/stdio/fgetws.c
index 195cb435..b08b3049 100644
--- a/src/stdio/fgetws.c
+++ b/src/stdio/fgetws.c
@@ -1,5 +1,6 @@
#include "stdio_impl.h"
#include <wchar.h>
+#include <errno.h>
wint_t __fgetwc_unlocked(FILE *);
@@ -11,6 +12,10 @@ wchar_t *fgetws(wchar_t *restrict s, int n, FILE *restrict f)
FLOCK(f);
+ /* Setup a dummy errno so we can detect EILSEQ. This is
+ * the only way to catch encoding errors in the form of a
+ * partial character just before EOF. */
+ errno = EAGAIN;
for (; n; n--) {
wint_t c = __fgetwc_unlocked(f);
if (c == WEOF) break;
@@ -18,7 +23,7 @@ wchar_t *fgetws(wchar_t *restrict s, int n, FILE *restrict f)
if (c == '\n') break;
}
*p = 0;
- if (ferror(f)) p = s;
+ if (ferror(f) || errno==EILSEQ) p = s;
FUNLOCK(f);