diff options
Diffstat (limited to 'libio/ioungetc.c')
| -rw-r--r-- | libio/ioungetc.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/libio/ioungetc.c b/libio/ioungetc.c index 1a6988e..c1237b5 100644 --- a/libio/ioungetc.c +++ b/libio/ioungetc.c @@ -1,5 +1,5 @@ /* -Copyright (C) 1993 Free Software Foundation +Copyright (C) 1993, 1996 Free Software Foundation, Inc. This file is part of the GNU IO Library. This library is free software; you can redistribute it and/or modify it under the @@ -29,10 +29,14 @@ _IO_ungetc (c, fp) int c; _IO_FILE *fp; { + int result; CHECK_FILE (fp, EOF); if (c == EOF) return EOF; - return _IO_sputbackc (fp, (unsigned char) c); + _IO_flockfile (fp); + result = _IO_sputbackc (fp, (unsigned char) c); + _IO_funlockfile (fp); + return result; } weak_alias (_IO_ungetc, ungetc) |