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1 /*
2  * Copyright (C) 2008 The Android Open Source Project
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  *  * Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  *  * Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in
12  *    the documentation and/or other materials provided with the
13  *    distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
18  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
19  * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
21  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
22  * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
23  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
25  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 /* this test is used to check that a memory-leak in vfprintf was fixed.
29  * the initial code leaked heap memory each time a formatted double was printed
30  */
31 #include <stdio.h>
32 
33 extern size_t  dlmalloc_footprint();
34 
main(void)35 int  main(void)
36 {
37     size_t   initial = dlmalloc_footprint();
38     size_t   final;
39     char     temp[64];
40     int      n;
41 
42     for (n = 0; n < 10000; n++)
43         snprintf( temp, sizeof(temp), "%g", n*0.647287623 );
44 
45     final   = dlmalloc_footprint();
46     /* vfprintf uses temporary heap blocks to do the formatting, so */
47     /* it's OK to have one page in there                            */
48     if (final <= 4096) {
49         printf( "OK: initial = %ld, final == %ld\n", (long)initial, (long)final );
50         return 0;
51     } else {
52         fprintf(stderr, "KO: initial == %ld, final == %ld\n", (long)initial, (long)final );
53         return 1;
54     }
55 }
56