diff options
Diffstat (limited to 'libio/genops.c')
| -rw-r--r-- | libio/genops.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/libio/genops.c b/libio/genops.c index bffc355fa5..89a3dfc152 100644 --- a/libio/genops.c +++ b/libio/genops.c @@ -194,6 +194,9 @@ __overflow (f, ch) _IO_FILE *f; int ch; { + /* This is a single-byte stream. */ + if (f->_mode == 0) + _IO_fwide (f, -1); return _IO_OVERFLOW (f, ch); } @@ -285,6 +288,8 @@ __underflow (fp) if (fp->_vtable_offset == 0 && _IO_fwide (fp, -1) != -1) return EOF; + if (fp->_mode == 0) + _IO_fwide (fp, -1); if (_IO_in_put_mode (fp)) if (_IO_switch_to_get_mode (fp) == EOF) return EOF; @@ -313,6 +318,8 @@ __uflow (fp) if (fp->_vtable_offset == 0 && _IO_fwide (fp, -1) != -1) return EOF; + if (fp->_mode == 0) + _IO_fwide (fp, -11); if (_IO_in_put_mode (fp)) if (_IO_switch_to_get_mode (fp) == EOF) return EOF; |