test_vfprintf_leak.c revision e16cb84e2324f05334d18dcf5956f20f44262b62
1e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project/* 2e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * Copyright (C) 2008 The Android Open Source Project 3e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * All rights reserved. 4e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * 5e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * Redistribution and use in source and binary forms, with or without 6e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * modification, are permitted provided that the following conditions 7e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * are met: 8e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * * Redistributions of source code must retain the above copyright 9e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * notice, this list of conditions and the following disclaimer. 10e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * * Redistributions in binary form must reproduce the above copyright 11e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * notice, this list of conditions and the following disclaimer in 12e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * the documentation and/or other materials provided with the 13e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * distribution. 14e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * 15e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * SUCH DAMAGE. 27e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project */ 28e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project/* this test is used to check that a memory-leak in vfprintf was fixed. 29e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project * the initial code leaked heap memory each time a formatted double was printed 30e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project */ 31e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project#include <stdio.h> 32e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project 33e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Projectextern size_t dlmalloc_footprint(); 34e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project 35e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Projectint main(void) 36e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project{ 37e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project size_t initial = dlmalloc_footprint(); 38e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project size_t final; 39e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project char temp[64]; 40e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project int n; 41e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project 42e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project for (n = 0; n < 10000; n++) 43e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project snprintf( temp, sizeof(temp), "%g", n*0.647287623 ); 44e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project 45e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project final = dlmalloc_footprint(); 46e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project /* vfprintf uses temporary heap blocks to do the formatting, so */ 47e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project /* it's OK to have one page in there */ 48e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project if (final <= 4096) { 49e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project printf( "OK: initial = %ld, final == %ld\n", (long)initial, (long)final ); 50e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project return 0; 51e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project } else { 52e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project fprintf(stderr, "KO: initial == %ld, final == %ld\n", (long)initial, (long)final ); 53e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project return 1; 54e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project } 55e16cb84e2324f05334d18dcf5956f20f44262b62The Android Open Source Project} 56