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Diffstat (limited to 'winsup/testsuite/winsup.api/mmaptest01.c')
-rw-r--r--winsup/testsuite/winsup.api/mmaptest01.c109
1 files changed, 0 insertions, 109 deletions
diff --git a/winsup/testsuite/winsup.api/mmaptest01.c b/winsup/testsuite/winsup.api/mmaptest01.c
deleted file mode 100644
index 5a14461e6..000000000
--- a/winsup/testsuite/winsup.api/mmaptest01.c
+++ /dev/null
@@ -1,109 +0,0 @@
-/*
- Copyright 2001 Free Software Foundation, Inc.
- Written by Michael Chastain, <chastain@redhat.com>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
-
- This program demonstrates a bug in cygwin's mmap.
- I open one file, mmap it, and close it.
- I open a different file, mmap it, and close it.
-
- The second file re-uses the file handle (which is OK),
- but then it re-uses the buffer as well! Ouch!
-
- This bug occurs on cygwin1.dll dated 2001-01-31.
- It causes gnu cpp to screw up its include file buffers.
-
- Compile with "gcc -o y1 y1.c".
-
- Output from a bad cygwin1.dll:
-
- y1.txt: 3 0x4660000 y1 y1 y1 y1 y1 y1 y1
- y2.txt: 3 0x4660000 y1 y1 y1 y1 y1 y1 y1
-
- Output from a good cygwin1.dll:
-
- y1.txt: 3 0x14060000 y1 y1 y1 y1 y1 y1 y1
- y2.txt: 3 0x14070000 y2 y2 y2 y2 y2 y2 y2
-
- Output from Red Hat Linux 7:
-
- y1.txt: 3 0x40017000 y1 y1 y1 y1 y1 y1 y1
- y2.txt: 3 0x40018000 y2 y2 y2 y2 y2 y2 y2
- */
-
-#include <sys/mman.h>
-#include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-/* some systems have O_BINARY and some do not */
-#ifndef O_BINARY
-#define O_BINARY 0
-#endif
-
-/* filler for file 1 */
-char const line1 [] = "y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1 y1\n";
-#define size1 (sizeof(line1) - 1)
-#define count1 ((4096 / size1) + 1)
-
-/* filler for file 2 */
-char const line2 [] = "y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2 y2\n";
-#define size2 (sizeof(line2) - 1)
-#define count2 ((4096 / size2) + 1)
-
-int main ()
-{
- int fd1;
- char * buf1;
-
- int fd2;
- char * buf2;
-
- int i;
-
- /* create file 1 */
- fd1 = open ("y1.txt", O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644);
- for (i = 0; i < count1; i++)
- write (fd1, line1, size1);
- close (fd1);
-
- /* create file 2 */
- fd2 = open ("y2.txt", O_WRONLY|O_CREAT|O_TRUNC|O_BINARY, 0644);
- for (i = 0; i < count2; i++)
- write (fd2, line2, size2);
- close (fd2);
-
- /* mmap file 1 */
- fd1 = open ("y1.txt", O_RDONLY | O_BINARY, 0644);
- buf1 = mmap (0, 4096, PROT_READ, MAP_PRIVATE, fd1, 0);
- close (fd1);
-
- /* mmap file 2 */
- fd2 = open ("y2.txt", O_RDONLY | O_BINARY, 0644);
- buf2 = mmap (0, 4096, PROT_READ, MAP_PRIVATE, fd2, 0);
- close (fd2);
-
- /* the buffers have to be different */
- if (buf1 == buf2 || !memcmp (buf1, buf2, 20))
- {
- printf ("buffers are not different!\n");
- return 1;
- }
-
- return 0;
-}
-