From 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Thu, 12 Jul 2007 18:26:36 +0000 Subject: 2.5-18.1 --- libio/iofgetws_u.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) (limited to 'libio/iofgetws_u.c') diff --git a/libio/iofgetws_u.c b/libio/iofgetws_u.c index 1253564566..9fb8a5cac1 100644 --- a/libio/iofgetws_u.c +++ b/libio/iofgetws_u.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1993, 95, 96, 97, 98, 99 Free Software Foundation, Inc. +/* Copyright (C) 1993, 95, 96, 97, 98, 99, 2005 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -40,6 +40,14 @@ fgetws_unlocked (buf, n, fp) CHECK_FILE (fp, NULL); if (n <= 0) return NULL; + if (__builtin_expect (n == 1, 0)) + { + /* Another irregular case: since we have to store a NUL byte and + there is only room for exactly one byte, we don't have to + read anything. */ + buf[0] = L'\0'; + return buf; + } /* This is very tricky since a file descriptor may be in the non-blocking mode. The error flag doesn't mean much in this case. We return an error only when there is a new error. */ -- cgit v1.2.3