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2.5-18.1

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This commit is contained in:
Jakub Jelinek
2007-07-12 18:26:36 +00:00
parent 7d58530341
commit 0ecb606cb6
6215 changed files with 494638 additions and 305010 deletions
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10
libio/iofgets.c
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@ -1,4 +1,4 @@
/* Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2002, 2003
/* Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2002, 2003, 2005
Free Software Foundation, Inc.
This file is part of the GNU C Library.
@ -41,6 +41,14 @@ _IO_fgets (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] = '\0';
return buf;
}
_IO_acquire_lock (fp);
/* This is very tricky since a file descriptor may be in the
non-blocking mode. The error flag doesn't mean much in this