mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-27 03:33:33 +08:00
[BZ #713]
2005-09-26 Ulrich Drepper <drepper@redhat.com> [BZ #713] * libio/iofgets.c: Treat N==1 correctly. * libio/iofgets_u.c: Likewise. * libio/iofgetws.c: Likewise. * libio/iofgetws_u.c: Likewise. * stdio-common/Makefile (tests): Add tst-fgets. * stdio-common/tst-fgets.c: New file.
This commit is contained in:
Ulrich Drepper
parent
9a5933834b
commit
b5d839c996
10
ChangeLog
10
ChangeLog
@ -1,3 +1,13 @@
|
||||
2005-09-26 Ulrich Drepper <drepper@redhat.com>
|
||||
|
||||
[BZ #713]
|
||||
* libio/iofgets.c: Treat N==1 correctly.
|
||||
* libio/iofgets_u.c: Likewise.
|
||||
* libio/iofgetws.c: Likewise.
|
||||
* libio/iofgetws_u.c: Likewise.
|
||||
* stdio-common/Makefile (tests): Add tst-fgets.
|
||||
* stdio-common/tst-fgets.c: New file.
|
||||
|
||||
2005-01-11 Thorsten Kukuk <kukuk@suse.de>
|
||||
|
||||
[BZ #652]
|
||||
|
||||
@ -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
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (C) 1993,1995,1996,1997,1998,2002 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 1993,1995-1998,2002,2005 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 @@ fgets_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] = '\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. */
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2001
|
||||
/* Copyright (C) 1993, 1995, 1996, 1997, 1998, 1999, 2001, 2005
|
||||
Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
|
||||
@ -41,6 +41,14 @@ fgetws (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;
|
||||
}
|
||||
_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
|
||||
|
||||
@ -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. */
|
||||
|
||||
@ -1,4 +1,5 @@
|
||||
/* Copyright (C) 1993,1997,1998,2000,2001,2002 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 1993,1997,1998,2000,2001,2002,2005
|
||||
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
|
||||
@ -73,7 +74,8 @@ _IO_getline_info (fp, buf, n, delim, extract_delim, eof)
|
||||
int c = __uflow (fp);
|
||||
if (c == EOF)
|
||||
{
|
||||
if (eof) *eof = c;
|
||||
if (eof)
|
||||
*eof = c;
|
||||
break;
|
||||
}
|
||||
if (c == delim)
|
||||
@ -89,31 +91,31 @@ _IO_getline_info (fp, buf, n, delim, extract_delim, eof)
|
||||
*ptr++ = c;
|
||||
n--;
|
||||
}
|
||||
else
|
||||
{
|
||||
char *t;
|
||||
if ((_IO_size_t) len >= n)
|
||||
len = n;
|
||||
t = (char *) memchr ((void *) fp->_IO_read_ptr, delim, len);
|
||||
if (t != NULL)
|
||||
{
|
||||
_IO_size_t old_len = ptr-buf;
|
||||
len = t - fp->_IO_read_ptr;
|
||||
if (extract_delim >= 0)
|
||||
{
|
||||
++t;
|
||||
if (extract_delim > 0)
|
||||
++len;
|
||||
}
|
||||
memcpy ((void *) ptr, (void *) fp->_IO_read_ptr, len);
|
||||
fp->_IO_read_ptr = t;
|
||||
return old_len + len;
|
||||
}
|
||||
memcpy ((void *) ptr, (void *) fp->_IO_read_ptr, len);
|
||||
fp->_IO_read_ptr += len;
|
||||
ptr += len;
|
||||
n -= len;
|
||||
}
|
||||
else
|
||||
{
|
||||
char *t;
|
||||
if ((_IO_size_t) len >= n)
|
||||
len = n;
|
||||
t = (char *) memchr ((void *) fp->_IO_read_ptr, delim, len);
|
||||
if (t != NULL)
|
||||
{
|
||||
_IO_size_t old_len = ptr-buf;
|
||||
len = t - fp->_IO_read_ptr;
|
||||
if (extract_delim >= 0)
|
||||
{
|
||||
++t;
|
||||
if (extract_delim > 0)
|
||||
++len;
|
||||
}
|
||||
memcpy ((void *) ptr, (void *) fp->_IO_read_ptr, len);
|
||||
fp->_IO_read_ptr = t;
|
||||
return old_len + len;
|
||||
}
|
||||
memcpy ((void *) ptr, (void *) fp->_IO_read_ptr, len);
|
||||
fp->_IO_read_ptr += len;
|
||||
ptr += len;
|
||||
n -= len;
|
||||
}
|
||||
}
|
||||
return ptr - buf;
|
||||
}
|
||||
|
||||
@ -53,7 +53,7 @@ tests := tstscanf test_rdwr test-popen tstgetln test-fseek \
|
||||
scanf11 scanf12 tst-tmpnam tst-cookie tst-obprintf tst-sscanf \
|
||||
tst-swprintf tst-fseek tst-fmemopen test-vfprintf tst-gets \
|
||||
tst-perror tst-sprintf tst-rndseek tst-fdopen tst-fphex bug14 bug15 \
|
||||
tst-popen tst-unlockedio tst-fmemopen2 tst-put-error
|
||||
tst-popen tst-unlockedio tst-fmemopen2 tst-put-error tst-fgets
|
||||
|
||||
test-srcs = tst-unbputc tst-printf
|
||||
|
||||
|
||||
20
stdio-common/tst-fgets.c
Normal file
20
stdio-common/tst-fgets.c
Normal file
@ -0,0 +1,20 @@
|
||||
/* Derived from the test case in
|
||||
http://sourceware.org/bugzilla/show_bug.cgi?id=713. */
|
||||
#include <stdio.h>
|
||||
|
||||
static int
|
||||
do_test (void)
|
||||
{
|
||||
FILE *fp = fmemopen ("hello", 5, "r");
|
||||
char buf[2];
|
||||
char *bp = fgets (buf, sizeof (buf), fp);
|
||||
printf ("fgets: %s\n", bp == buf ? "OK" : "ERROR");
|
||||
int res = bp != buf;
|
||||
bp = fgets_unlocked (buf, sizeof (buf), fp);
|
||||
printf ("fgets_unlocked: %s\n", bp == buf ? "OK" : "ERROR");
|
||||
res |= bp != buf;
|
||||
return res;
|
||||
}
|
||||
|
||||
#define TEST_FUNCTION do_test ()
|
||||
#include "../test-skeleton.c"
|
||||
Loading…
Reference in New Issue
Block a user