From 00379f785fe102b41c75761d4c1f2a1dbb8d1fde Mon Sep 17 00:00:00 2001
From: solar <unknown>
Date: Mon, 19 Jul 2010 05:19:04 +0000
Subject: [PATCH] scanf() returns -1 on early input error.

---
 functions/stdio/vfscanf.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/functions/stdio/vfscanf.c b/functions/stdio/vfscanf.c
index 8f121e9..e1c8b4b 100644
--- a/functions/stdio/vfscanf.c
+++ b/functions/stdio/vfscanf.c
@@ -53,10 +53,14 @@ int vfscanf( FILE * _PDCLIB_restrict stream, const char * _PDCLIB_restrict forma
                 if ( ( ( c = getc( stream ) ) != *format ) || feof( stream ) ) /* TODO: Check EOF status directly */
                 {
                     /* Matching error */
-                    if ( ! feof( stream ) ) /* TODO: Check EOF status directly */
+                    if ( ! feof( stream ) && ! ferror( stream ) ) /* TODO: Check EOF status directly */
                     {
                         ungetc( c, stream );
                     }
+                    else if ( status.n == 0 )
+                    {
+                        return EOF;
+                    }
                     return status.n;
                 }
                 else
-- 
2.40.0