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-rw-r--r--libio/genops.c23
1 files changed, 19 insertions, 4 deletions
diff --git a/libio/genops.c b/libio/genops.c
index 7eb2d43ee1..23a6fdeaea 100644
--- a/libio/genops.c
+++ b/libio/genops.c
@@ -511,26 +511,41 @@ int
DEFUN(_IO_sputbackc, (fp, c),
register _IO_FILE *fp AND int c)
{
+ int result;
+
if (fp->_IO_read_ptr > fp->_IO_read_base
&& (unsigned char)fp->_IO_read_ptr[-1] == (unsigned char)c)
{
fp->_IO_read_ptr--;
- return (unsigned char)c;
+ result = (unsigned char)c;
}
- return _IO_PBACKFAIL (fp, c);
+ else
+ result = _IO_PBACKFAIL (fp, c);
+
+ if (result != EOF)
+ fp->_flags &= ~_IO_EOF_SEEN;
+
+ return result;
}
int
DEFUN(_IO_sungetc, (fp),
register _IO_FILE *fp)
{
+ int result;
+
if (fp->_IO_read_ptr > fp->_IO_read_base)
{
fp->_IO_read_ptr--;
- return (unsigned char)*fp->_IO_read_ptr;
+ result = (unsigned char)*fp->_IO_read_ptr;
}
else
- return _IO_PBACKFAIL (fp, EOF);
+ result = _IO_PBACKFAIL (fp, EOF);
+
+ if (result != EOF)
+ fp->_flags &= ~_IO_EOF_SEEN;
+
+ return result;
}
#if 0 /* Work in progress */