crypto/sm2/sm2_sign.c: ensure UINT16_MAX is properly defined
[openssl.git] / crypto / mem_dbg.c
index 139cfe1..0489e97 100644 (file)
-/* crypto/mem_dbg.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- * 
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to.  The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- * 
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- * 
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *    "This product includes cryptographic software written by
- *     Eric Young (eay@cryptsoft.com)"
- *    The word 'cryptographic' can be left out if the rouines from the library
- *    being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from 
- *    the apps directory (application code) you must include an acknowledgement:
- *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- * 
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * 
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed.  i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-/* ====================================================================
- * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer. 
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- *    software must display the following acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- *    endorse or promote products derived from this software without
- *    prior written permission. For written permission, please contact
- *    openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- *    nor may "OpenSSL" appear in their names without prior written
- *    permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- *    acknowledgment:
- *    "This product includes software developed by the OpenSSL Project
- *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
+/*
+ * Copyright 1995-2018 The OpenSSL Project Authors. All Rights Reserved.
  *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
  */
 
 #include <stdio.h>
 #include <stdlib.h>
-#include <time.h>      
-#include "cryptlib.h"
+#include <time.h>
+#include "internal/cryptlib.h"
+#include "internal/thread_once.h"
 #include <openssl/crypto.h>
 #include <openssl/buffer.h>
-#include <openssl/bio.h>
+#include "internal/bio.h"
 #include <openssl/lhash.h>
 
-static int mh_mode=CRYPTO_MEM_CHECK_OFF;
-/* The state changes to CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE
- * when the application asks for it (usually after library initialisation
- * for which no book-keeping is desired).
- *
- * State CRYPTO_MEM_CHECK_ON exists only temporarily when the library
- * thinks that certain allocations should not be checked (e.g. the data
- * structures used for memory checking).  It is not suitable as an initial
- * state: the library will unexpectedly enable memory checking when it
- * executes one of those sections that want to disable checking
- * temporarily.
- *
- * State CRYPTO_MEM_CHECK_ENABLE without ..._ON makes no sense whatsoever.
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
+# include <execinfo.h>
+#endif
+
+/*
+ * The state changes to CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE when
+ * the application asks for it (usually after library initialisation for
+ * which no book-keeping is desired). State CRYPTO_MEM_CHECK_ON exists only
+ * temporarily when the library thinks that certain allocations should not be
+ * checked (e.g. the data structures used for memory checking).  It is not
+ * suitable as an initial state: the library will unexpectedly enable memory
+ * checking when it executes one of those sections that want to disable
+ * checking temporarily. State CRYPTO_MEM_CHECK_ENABLE without ..._ON makes
+ * no sense whatsoever.
  */
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
+static int mh_mode = CRYPTO_MEM_CHECK_OFF;
+#endif
 
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
 static unsigned long order = 0; /* number of memory requests */
 
-DECLARE_LHASH_OF(MEM);
-static LHASH_OF(MEM) *mh=NULL; /* hash-table of memory requests
-                               * (address as key); access requires
-                               * MALLOC2 lock */
-
-
-typedef struct app_mem_info_st
-/* For application-defined information (static C-string `info')
+/*-
+ * For application-defined information (static C-string `info')
  * to be displayed in memory leak list.
  * Each thread has its own stack.  For applications, there is
- *   CRYPTO_push_info("...")     to push an entry,
- *   CRYPTO_pop_info()           to pop an entry,
- *   CRYPTO_remove_all_info()    to pop all entries.
+ *   OPENSSL_mem_debug_push("...")     to push an entry,
+ *   OPENSSL_mem_debug_pop()     to pop an entry,
  */
-       {
-       CRYPTO_THREADID threadid;
-       const char *file;
-       int line;
-       const char *info;
-       struct app_mem_info_st *next; /* tail of thread's stack */
-       int references;
-       } APP_INFO;
-
-static void app_info_free(APP_INFO *);
-
-DECLARE_LHASH_OF(APP_INFO);
-static LHASH_OF(APP_INFO) *amih=NULL; /* hash-table with those
-                                      * app_mem_info_st's that are at
-                                      * the top of their thread's
-                                      * stack (with `thread' as key);
-                                      * access requires MALLOC2
-                                      * lock */
-
-typedef struct mem_st
+struct app_mem_info_st {
+    CRYPTO_THREAD_ID threadid;
+    const char *file;
+    int line;
+    const char *info;
+    struct app_mem_info_st *next; /* tail of thread's stack */
+    int references;
+};
+
+static CRYPTO_ONCE memdbg_init = CRYPTO_ONCE_STATIC_INIT;
+CRYPTO_RWLOCK *memdbg_lock;
+static CRYPTO_RWLOCK *long_memdbg_lock;
+static CRYPTO_THREAD_LOCAL appinfokey;
+
 /* memory-block description */
-       {
-       void *addr;
-       int num;
-       const char *file;
-       int line;
-       CRYPTO_THREADID threadid;
-       unsigned long order;
-       time_t time;
-       APP_INFO *app_info;
-       } MEM;
-
-static long options =             /* extra information to be recorded */
-#if defined(CRYPTO_MDEBUG_TIME) || defined(CRYPTO_MDEBUG_ALL)
-       V_CRYPTO_MDEBUG_TIME |
-#endif
-#if defined(CRYPTO_MDEBUG_THREAD) || defined(CRYPTO_MDEBUG_ALL)
-       V_CRYPTO_MDEBUG_THREAD |
+struct mem_st {
+    void *addr;
+    int num;
+    const char *file;
+    int line;
+    CRYPTO_THREAD_ID threadid;
+    unsigned long order;
+    time_t time;
+    APP_INFO *app_info;
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
+    void *array[30];
+    size_t array_siz;
 #endif
-       0;
+};
 
+/*
+ * hash-table of memory requests (address as * key); access requires
+ * long_memdbg_lock lock
+ */
+static LHASH_OF(MEM) *mh = NULL;
 
-static unsigned int num_disable = 0; /* num_disable > 0
-                                      *     iff
-                                      * mh_mode == CRYPTO_MEM_CHECK_ON (w/o ..._ENABLE)
-                                      */
+/* num_disable > 0 iff mh_mode == CRYPTO_MEM_CHECK_ON (w/o ..._ENABLE) */
+static unsigned int num_disable = 0;
 
-/* Valid iff num_disable > 0.  CRYPTO_LOCK_MALLOC2 is locked exactly in this
+/*
+ * Valid iff num_disable > 0.  long_memdbg_lock is locked exactly in this
  * case (by the thread named in disabling_thread).
  */
-static CRYPTO_THREADID disabling_threadid;
+static CRYPTO_THREAD_ID disabling_threadid;
+
+DEFINE_RUN_ONCE_STATIC(do_memdbg_init)
+{
+    memdbg_lock = CRYPTO_THREAD_lock_new();
+    long_memdbg_lock = CRYPTO_THREAD_lock_new();
+    if (memdbg_lock == NULL || long_memdbg_lock == NULL
+        || !CRYPTO_THREAD_init_local(&appinfokey, NULL)) {
+        CRYPTO_THREAD_lock_free(memdbg_lock);
+        memdbg_lock = NULL;
+        CRYPTO_THREAD_lock_free(long_memdbg_lock);
+        long_memdbg_lock = NULL;
+        return 0;
+    }
+    return 1;
+}
 
 static void app_info_free(APP_INFO *inf)
-       {
-       if (--(inf->references) <= 0)
-               {
-               if (inf->next != NULL)
-                       {
-                       app_info_free(inf->next);
-                       }
-               OPENSSL_free(inf);
-               }
-       }
+{
+    if (inf == NULL)
+        return;
+    if (--(inf->references) <= 0) {
+        app_info_free(inf->next);
+        OPENSSL_free(inf);
+    }
+}
+#endif
 
 int CRYPTO_mem_ctrl(int mode)
-       {
-       int ret=mh_mode;
-
-       CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
-       switch (mode)
-               {
-       /* for applications (not to be called while multiple threads
-        * use the library): */
-       case CRYPTO_MEM_CHECK_ON: /* aka MemCheck_start() */
-               mh_mode = CRYPTO_MEM_CHECK_ON|CRYPTO_MEM_CHECK_ENABLE;
-               num_disable = 0;
-               break;
-       case CRYPTO_MEM_CHECK_OFF: /* aka MemCheck_stop() */
-               mh_mode = 0;
-               num_disable = 0; /* should be true *before* MemCheck_stop is used,
-                                   or there'll be a lot of confusion */
-               break;
-
-       /* switch off temporarily (for library-internal use): */
-       case CRYPTO_MEM_CHECK_DISABLE: /* aka MemCheck_off() */
-               if (mh_mode & CRYPTO_MEM_CHECK_ON)
-                       {
-                       CRYPTO_THREADID cur;
-                       CRYPTO_THREADID_current(&cur);
-                       if (!num_disable || CRYPTO_THREADID_cmp(&disabling_threadid, &cur)) /* otherwise we already have the MALLOC2 lock */
-                               {
-                               /* Long-time lock CRYPTO_LOCK_MALLOC2 must not be claimed while
-                                * we're holding CRYPTO_LOCK_MALLOC, or we'll deadlock if
-                                * somebody else holds CRYPTO_LOCK_MALLOC2 (and cannot release
-                                * it because we block entry to this function).
-                                * Give them a chance, first, and then claim the locks in
-                                * appropriate order (long-time lock first).
-                                */
-                               CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
-                               /* Note that after we have waited for CRYPTO_LOCK_MALLOC2
-                                * and CRYPTO_LOCK_MALLOC, we'll still be in the right
-                                * "case" and "if" branch because MemCheck_start and
-                                * MemCheck_stop may never be used while there are multiple
-                                * OpenSSL threads. */
-                               CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);
-                               CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
-                               mh_mode &= ~CRYPTO_MEM_CHECK_ENABLE;
-                               CRYPTO_THREADID_cpy(&disabling_threadid, &cur);
-                               }
-                       num_disable++;
-                       }
-               break;
-       case CRYPTO_MEM_CHECK_ENABLE: /* aka MemCheck_on() */
-               if (mh_mode & CRYPTO_MEM_CHECK_ON)
-                       {
-                       if (num_disable) /* always true, or something is going wrong */
-                               {
-                               num_disable--;
-                               if (num_disable == 0)
-                                       {
-                                       mh_mode|=CRYPTO_MEM_CHECK_ENABLE;
-                                       CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);
-                                       }
-                               }
-                       }
-               break;
-
-       default:
-               break;
-               }
-       CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
-       return(ret);
-       }
-
-int CRYPTO_is_mem_check_on(void)
-       {
-       int ret = 0;
-
-       if (mh_mode & CRYPTO_MEM_CHECK_ON)
-               {
-               CRYPTO_THREADID cur;
-               CRYPTO_THREADID_current(&cur);
-               CRYPTO_r_lock(CRYPTO_LOCK_MALLOC);
-
-               ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
-                       || CRYPTO_THREADID_cmp(&disabling_threadid, &cur);
-
-               CRYPTO_r_unlock(CRYPTO_LOCK_MALLOC);
-               }
-       return(ret);
-       }       
-
-
-void CRYPTO_dbg_set_options(long bits)
-       {
-       options = bits;
-       }
-
-long CRYPTO_dbg_get_options(void)
-       {
-       return options;
-       }
+{
+#ifdef OPENSSL_NO_CRYPTO_MDEBUG
+    return mode - mode;
+#else
+    int ret = mh_mode;
+
+    if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
+        return -1;
+
+    CRYPTO_THREAD_write_lock(memdbg_lock);
+    switch (mode) {
+    default:
+        break;
+
+    case CRYPTO_MEM_CHECK_ON:
+        mh_mode = CRYPTO_MEM_CHECK_ON | CRYPTO_MEM_CHECK_ENABLE;
+        num_disable = 0;
+        break;
+
+    case CRYPTO_MEM_CHECK_OFF:
+        mh_mode = 0;
+        num_disable = 0;
+        break;
+
+    /* switch off temporarily (for library-internal use): */
+    case CRYPTO_MEM_CHECK_DISABLE:
+        if (mh_mode & CRYPTO_MEM_CHECK_ON) {
+            CRYPTO_THREAD_ID cur = CRYPTO_THREAD_get_current_id();
+            /* see if we don't have long_memdbg_lock already */
+            if (!num_disable
+                || !CRYPTO_THREAD_compare_id(disabling_threadid, cur)) {
+                /*
+                 * Long-time lock long_memdbg_lock must not be claimed
+                 * while we're holding memdbg_lock, or we'll deadlock
+                 * if somebody else holds long_memdbg_lock (and cannot
+                 * release it because we block entry to this function). Give
+                 * them a chance, first, and then claim the locks in
+                 * appropriate order (long-time lock first).
+                 */
+                CRYPTO_THREAD_unlock(memdbg_lock);
+                /*
+                 * Note that after we have waited for long_memdbg_lock and
+                 * memdbg_lock, we'll still be in the right "case" and
+                 * "if" branch because MemCheck_start and MemCheck_stop may
+                 * never be used while there are multiple OpenSSL threads.
+                 */
+                CRYPTO_THREAD_write_lock(long_memdbg_lock);
+                CRYPTO_THREAD_write_lock(memdbg_lock);
+                mh_mode &= ~CRYPTO_MEM_CHECK_ENABLE;
+                disabling_threadid = cur;
+            }
+            num_disable++;
+        }
+        break;
+
+    case CRYPTO_MEM_CHECK_ENABLE:
+        if (mh_mode & CRYPTO_MEM_CHECK_ON) {
+            if (num_disable) {  /* always true, or something is going wrong */
+                num_disable--;
+                if (num_disable == 0) {
+                    mh_mode |= CRYPTO_MEM_CHECK_ENABLE;
+                    CRYPTO_THREAD_unlock(long_memdbg_lock);
+                }
+            }
+        }
+        break;
+    }
+    CRYPTO_THREAD_unlock(memdbg_lock);
+    return ret;
+#endif
+}
+
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG
+
+static int mem_check_on(void)
+{
+    int ret = 0;
+    CRYPTO_THREAD_ID cur;
+
+    if (mh_mode & CRYPTO_MEM_CHECK_ON) {
+        if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
+            return 0;
+
+        cur = CRYPTO_THREAD_get_current_id();
+        CRYPTO_THREAD_read_lock(memdbg_lock);
+
+        ret = (mh_mode & CRYPTO_MEM_CHECK_ENABLE)
+            || !CRYPTO_THREAD_compare_id(disabling_threadid, cur);
+
+        CRYPTO_THREAD_unlock(memdbg_lock);
+    }
+    return ret;
+}
 
 static int mem_cmp(const MEM *a, const MEM *b)
-       {
+{
 #ifdef _WIN64
-       const char *ap=(const char *)a->addr,
-                  *bp=(const char *)b->addr;
-       if (ap==bp)     return 0;
-       else if (ap>bp) return 1;
-       else            return -1;
+    const char *ap = (const char *)a->addr, *bp = (const char *)b->addr;
+    if (ap == bp)
+        return 0;
+    else if (ap > bp)
+        return 1;
+    else
+        return -1;
 #else
-       return (const char *)a->addr - (const char *)b->addr;
+    return (const char *)a->addr - (const char *)b->addr;
 #endif
-       }
-static IMPLEMENT_LHASH_COMP_FN(mem, MEM)
+}
 
 static unsigned long mem_hash(const MEM *a)
-       {
-       unsigned long ret;
-
-       ret=(unsigned long)a->addr;
-
-       ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
-       return(ret);
-       }
-static IMPLEMENT_LHASH_HASH_FN(mem, MEM)
-
-/* static int app_info_cmp(APP_INFO *a, APP_INFO *b) */
-static int app_info_cmp(const void *a_void, const void *b_void)
-       {
-       return CRYPTO_THREADID_cmp(&((const APP_INFO *)a_void)->threadid,
-                               &((const APP_INFO *)b_void)->threadid);
-       }
-static IMPLEMENT_LHASH_COMP_FN(app_info, APP_INFO)
-
-static unsigned long app_info_hash(const APP_INFO *a)
-       {
-       unsigned long ret;
-
-       ret = CRYPTO_THREADID_hash(&a->threadid);
-       /* This is left in as a "who am I to question legacy?" measure */
-       ret=ret*17851+(ret>>14)*7+(ret>>4)*251;
-       return(ret);
-       }
-static IMPLEMENT_LHASH_HASH_FN(app_info, APP_INFO)
-
-static APP_INFO *pop_info(void)
-       {
-       APP_INFO tmp;
-       APP_INFO *ret = NULL;
-
-       if (amih != NULL)
-               {
-               CRYPTO_THREADID_current(&tmp.threadid);
-               if ((ret=lh_APP_INFO_delete(amih,&tmp)) != NULL)
-                       {
-                       APP_INFO *next=ret->next;
-
-                       if (next != NULL)
-                               {
-                               next->references++;
-                               (void)lh_APP_INFO_insert(amih,next);
-                               }
-#ifdef LEVITTE_DEBUG_MEM
-                       if (CRYPTO_THREADID_cmp(&ret->threadid, &tmp.threadid))
-                               {
-                               fprintf(stderr, "pop_info(): deleted info has other thread ID (%lu) than the current thread (%lu)!!!!\n",
-                                       CRYPTO_THREADID_hash(&ret->threadid),
-                                       CRYPTO_THREADID_hash(&tmp.threadid));
-                               abort();
-                               }
-#endif
-                       if (--(ret->references) <= 0)
-                               {
-                               ret->next = NULL;
-                               if (next != NULL)
-                                       next->references--;
-                               OPENSSL_free(ret);
-                               }
-                       }
-               }
-       return(ret);
-       }
-
-int CRYPTO_push_info_(const char *info, const char *file, int line)
-       {
-       APP_INFO *ami, *amim;
-       int ret=0;
-
-       if (is_MemCheck_on())
-               {
-               MemCheck_off(); /* obtain MALLOC2 lock */
-
-               if ((ami = (APP_INFO *)OPENSSL_malloc(sizeof(APP_INFO))) == NULL)
-                       {
-                       ret=0;
-                       goto err;
-                       }
-               if (amih == NULL)
-                       {
-                       if ((amih=lh_APP_INFO_new()) == NULL)
-                               {
-                               OPENSSL_free(ami);
-                               ret=0;
-                               goto err;
-                               }
-                       }
-
-               CRYPTO_THREADID_current(&ami->threadid);
-               ami->file=file;
-               ami->line=line;
-               ami->info=info;
-               ami->references=1;
-               ami->next=NULL;
-
-               if ((amim=lh_APP_INFO_insert(amih,ami)) != NULL)
-                       {
-#ifdef LEVITTE_DEBUG_MEM
-                       if (CRYPTO_THREADID_cmp(&ami->threadid, &amim->threadid))
-                               {
-                               fprintf(stderr, "CRYPTO_push_info(): previous info has other thread ID (%lu) than the current thread (%lu)!!!!\n",
-                                       CRYPTO_THREADID_hash(&amim->threadid),
-                                       CRYPTO_THREADID_hash(&ami->threadid));
-                               abort();
-                               }
-#endif
-                       ami->next=amim;
-                       }
+{
+    size_t ret;
+
+    ret = (size_t)a->addr;
+
+    ret = ret * 17851 + (ret >> 14) * 7 + (ret >> 4) * 251;
+    return ret;
+}
+
+/* returns 1 if there was an info to pop, 0 if the stack was empty. */
+static int pop_info(void)
+{
+    APP_INFO *current = NULL;
+
+    if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
+        return 0;
+
+    current = (APP_INFO *)CRYPTO_THREAD_get_local(&appinfokey);
+    if (current != NULL) {
+        APP_INFO *next = current->next;
+
+        if (next != NULL) {
+            next->references++;
+            CRYPTO_THREAD_set_local(&appinfokey, next);
+        } else {
+            CRYPTO_THREAD_set_local(&appinfokey, NULL);
+        }
+        if (--(current->references) <= 0) {
+            current->next = NULL;
+            if (next != NULL)
+                next->references--;
+            OPENSSL_free(current);
+        }
+        return 1;
+    }
+    return 0;
+}
+
+int CRYPTO_mem_debug_push(const char *info, const char *file, int line)
+{
+    APP_INFO *ami, *amim;
+    int ret = 0;
+
+    if (mem_check_on()) {
+        CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
+
+        if (!RUN_ONCE(&memdbg_init, do_memdbg_init)
+            || (ami = OPENSSL_malloc(sizeof(*ami))) == NULL)
+            goto err;
+
+        ami->threadid = CRYPTO_THREAD_get_current_id();
+        ami->file = file;
+        ami->line = line;
+        ami->info = info;
+        ami->references = 1;
+        ami->next = NULL;
+
+        amim = (APP_INFO *)CRYPTO_THREAD_get_local(&appinfokey);
+        CRYPTO_THREAD_set_local(&appinfokey, ami);
+
+        if (amim != NULL)
+            ami->next = amim;
+        ret = 1;
  err:
-               MemCheck_on(); /* release MALLOC2 lock */
-               }
-
-       return(ret);
-       }
-
-int CRYPTO_pop_info(void)
-       {
-       int ret=0;
-
-       if (is_MemCheck_on()) /* _must_ be true, or something went severely wrong */
-               {
-               MemCheck_off(); /* obtain MALLOC2 lock */
-
-               ret=(pop_info() != NULL);
-
-               MemCheck_on(); /* release MALLOC2 lock */
-               }
-       return(ret);
-       }
-
-int CRYPTO_remove_all_info(void)
-       {
-       int ret=0;
-
-       if (is_MemCheck_on()) /* _must_ be true */
-               {
-               MemCheck_off(); /* obtain MALLOC2 lock */
-
-               while(pop_info() != NULL)
-                       ret++;
-
-               MemCheck_on(); /* release MALLOC2 lock */
-               }
-       return(ret);
-       }
-
-
-static unsigned long break_order_num=0;
-void CRYPTO_dbg_malloc(void *addr, int num, const char *file, int line,
-       int before_p)
-       {
-       MEM *m,*mm;
-       APP_INFO tmp,*amim;
-
-       switch(before_p & 127)
-               {
-       case 0:
-               break;
-       case 1:
-               if (addr == NULL)
-                       break;
-
-               if (is_MemCheck_on())
-                       {
-                       MemCheck_off(); /* make sure we hold MALLOC2 lock */
-                       if ((m=(MEM *)OPENSSL_malloc(sizeof(MEM))) == NULL)
-                               {
-                               OPENSSL_free(addr);
-                               MemCheck_on(); /* release MALLOC2 lock
-                                               * if num_disabled drops to 0 */
-                               return;
-                               }
-                       if (mh == NULL)
-                               {
-                               if ((mh=lh_MEM_new()) == NULL)
-                                       {
-                                       OPENSSL_free(addr);
-                                       OPENSSL_free(m);
-                                       addr=NULL;
-                                       goto err;
-                                       }
-                               }
-
-                       m->addr=addr;
-                       m->file=file;
-                       m->line=line;
-                       m->num=num;
-                       if (options & V_CRYPTO_MDEBUG_THREAD)
-                               CRYPTO_THREADID_current(&m->threadid);
-                       else
-                               memset(&m->threadid, 0, sizeof(m->threadid));
-
-                       if (order == break_order_num)
-                               {
-                               /* BREAK HERE */
-                               m->order=order;
-                               }
-                       m->order=order++;
-#ifdef LEVITTE_DEBUG_MEM
-                       fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] %c 0x%p (%d)\n",
-                               m->order,
-                               (before_p & 128) ? '*' : '+',
-                               m->addr, m->num);
-#endif
-                       if (options & V_CRYPTO_MDEBUG_TIME)
-                               m->time=time(NULL);
-                       else
-                               m->time=0;
-
-                       CRYPTO_THREADID_current(&tmp.threadid);
-                       m->app_info=NULL;
-                       if (amih != NULL
-                           && (amim=lh_APP_INFO_retrieve(amih,&tmp)) != NULL)
-                               {
-                               m->app_info = amim;
-                               amim->references++;
-                               }
-
-                       if ((mm=lh_MEM_insert(mh, m)) != NULL)
-                               {
-                               /* Not good, but don't sweat it */
-                               if (mm->app_info != NULL)
-                                       {
-                                       mm->app_info->references--;
-                                       }
-                               OPENSSL_free(mm);
-                               }
-               err:
-                       MemCheck_on(); /* release MALLOC2 lock
-                                       * if num_disabled drops to 0 */
-                       }
-               break;
-               }
-       return;
-       }
-
-void CRYPTO_dbg_free(void *addr, int before_p)
-       {
-       MEM m,*mp;
-
-       switch(before_p)
-               {
-       case 0:
-               if (addr == NULL)
-                       break;
-
-               if (is_MemCheck_on() && (mh != NULL))
-                       {
-                       MemCheck_off(); /* make sure we hold MALLOC2 lock */
-
-                       m.addr=addr;
-                       mp=lh_MEM_delete(mh,&m);
-                       if (mp != NULL)
-                               {
-#ifdef LEVITTE_DEBUG_MEM
-                       fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] - 0x%p (%d)\n",
-                               mp->order, mp->addr, mp->num);
+        CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
+    }
+
+    return ret;
+}
+
+int CRYPTO_mem_debug_pop(void)
+{
+    int ret = 0;
+
+    if (mem_check_on()) {
+        CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
+        ret = pop_info();
+        CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
+    }
+    return ret;
+}
+
+static unsigned long break_order_num = 0;
+
+void CRYPTO_mem_debug_malloc(void *addr, size_t num, int before_p,
+                             const char *file, int line)
+{
+    MEM *m, *mm;
+    APP_INFO *amim;
+
+    switch (before_p & 127) {
+    case 0:
+        break;
+    case 1:
+        if (addr == NULL)
+            break;
+
+        if (mem_check_on()) {
+            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
+
+            if (!RUN_ONCE(&memdbg_init, do_memdbg_init)
+                || (m = OPENSSL_malloc(sizeof(*m))) == NULL) {
+                OPENSSL_free(addr);
+                CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
+                return;
+            }
+            if (mh == NULL) {
+                if ((mh = lh_MEM_new(mem_hash, mem_cmp)) == NULL) {
+                    OPENSSL_free(addr);
+                    OPENSSL_free(m);
+                    addr = NULL;
+                    goto err;
+                }
+            }
+
+            m->addr = addr;
+            m->file = file;
+            m->line = line;
+            m->num = num;
+            m->threadid = CRYPTO_THREAD_get_current_id();
+
+            if (order == break_order_num) {
+                /* BREAK HERE */
+                m->order = order;
+            }
+            m->order = order++;
+# ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
+            m->array_siz = backtrace(m->array, OSSL_NELEM(m->array));
+# endif
+            m->time = time(NULL);
+
+            amim = (APP_INFO *)CRYPTO_THREAD_get_local(&appinfokey);
+            m->app_info = amim;
+            if (amim != NULL)
+                amim->references++;
+
+            if ((mm = lh_MEM_insert(mh, m)) != NULL) {
+                /* Not good, but don't sweat it */
+                if (mm->app_info != NULL) {
+                    mm->app_info->references--;
+                }
+                OPENSSL_free(mm);
+            }
+ err:
+            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
+        }
+        break;
+    }
+    return;
+}
+
+void CRYPTO_mem_debug_free(void *addr, int before_p,
+        const char *file, int line)
+{
+    MEM m, *mp;
+
+    switch (before_p) {
+    case 0:
+        if (addr == NULL)
+            break;
+
+        if (mem_check_on() && (mh != NULL)) {
+            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
+
+            m.addr = addr;
+            mp = lh_MEM_delete(mh, &m);
+            if (mp != NULL) {
+                app_info_free(mp->app_info);
+                OPENSSL_free(mp);
+            }
+
+            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
+        }
+        break;
+    case 1:
+        break;
+    }
+}
+
+void CRYPTO_mem_debug_realloc(void *addr1, void *addr2, size_t num,
+                              int before_p, const char *file, int line)
+{
+    MEM m, *mp;
+
+    switch (before_p) {
+    case 0:
+        break;
+    case 1:
+        if (addr2 == NULL)
+            break;
+
+        if (addr1 == NULL) {
+            CRYPTO_mem_debug_malloc(addr2, num, 128 | before_p, file, line);
+            break;
+        }
+
+        if (mem_check_on()) {
+            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
+
+            m.addr = addr1;
+            mp = lh_MEM_delete(mh, &m);
+            if (mp != NULL) {
+                mp->addr = addr2;
+                mp->num = num;
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
+                mp->array_siz = backtrace(mp->array, OSSL_NELEM(mp->array));
 #endif
-                               if (mp->app_info != NULL)
-                                       app_info_free(mp->app_info);
-                               OPENSSL_free(mp);
-                               }
-
-                       MemCheck_on(); /* release MALLOC2 lock
-                                       * if num_disabled drops to 0 */
-                       }
-               break;
-       case 1:
-               break;
-               }
-       }
-
-void CRYPTO_dbg_realloc(void *addr1, void *addr2, int num,
-       const char *file, int line, int before_p)
-       {
-       MEM m,*mp;
-
-#ifdef LEVITTE_DEBUG_MEM
-       fprintf(stderr, "LEVITTE_DEBUG_MEM: --> CRYPTO_dbg_malloc(addr1 = %p, addr2 = %p, num = %d, file = \"%s\", line = %d, before_p = %d)\n",
-               addr1, addr2, num, file, line, before_p);
+                (void)lh_MEM_insert(mh, mp);
+            }
+
+            CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
+        }
+        break;
+    }
+    return;
+}
+
+typedef struct mem_leak_st {
+    int (*print_cb) (const char *str, size_t len, void *u);
+    void *print_cb_arg;
+    int chunks;
+    long bytes;
+} MEM_LEAK;
+
+static void print_leak(const MEM *m, MEM_LEAK *l)
+{
+    char buf[1024];
+    char *bufp = buf;
+    size_t len = sizeof(buf), ami_cnt;
+    APP_INFO *amip;
+    int n;
+    struct tm *lcl = NULL;
+    /*
+     * Convert between CRYPTO_THREAD_ID (which could be anything at all) and
+     * a long. This may not be meaningful depending on what CRYPTO_THREAD_ID is
+     * but hopefully should give something sensible on most platforms
+     */
+    union {
+        CRYPTO_THREAD_ID tid;
+        unsigned long ltid;
+    } tid;
+    CRYPTO_THREAD_ID ti;
+
+    lcl = localtime(&m->time);
+    n = BIO_snprintf(bufp, len, "[%02d:%02d:%02d] ",
+                     lcl->tm_hour, lcl->tm_min, lcl->tm_sec);
+    if (n <= 0) {
+        bufp[0] = '\0';
+        return;
+    }
+    bufp += n;
+    len -= n;
+
+    n = BIO_snprintf(bufp, len, "%5lu file=%s, line=%d, ",
+                     m->order, m->file, m->line);
+    if (n <= 0)
+        return;
+    bufp += n;
+    len -= n;
+
+    tid.ltid = 0;
+    tid.tid = m->threadid;
+    n = BIO_snprintf(bufp, len, "thread=%lu, ", tid.ltid);
+    if (n <= 0)
+        return;
+    bufp += n;
+    len -= n;
+
+    n = BIO_snprintf(bufp, len, "number=%d, address=%p\n", m->num, m->addr);
+    if (n <= 0)
+        return;
+    bufp += n;
+    len -= n;
+
+    l->print_cb(buf, (size_t)(bufp - buf), l->print_cb_arg);
+
+    l->chunks++;
+    l->bytes += m->num;
+
+    amip = m->app_info;
+    ami_cnt = 0;
+
+    if (amip) {
+        ti = amip->threadid;
+
+        do {
+            int buf_len;
+            int info_len;
+
+            ami_cnt++;
+            if (ami_cnt >= sizeof(buf) - 1)
+                break;
+            memset(buf, '>', ami_cnt);
+            buf[ami_cnt] = '\0';
+            tid.ltid = 0;
+            tid.tid = amip->threadid;
+            n = BIO_snprintf(buf + ami_cnt, sizeof(buf) - ami_cnt,
+                             " thread=%lu, file=%s, line=%d, info=\"",
+                             tid.ltid, amip->file, amip->line);
+            if (n <= 0)
+                break;
+            buf_len = ami_cnt + n;
+            info_len = strlen(amip->info);
+            if (128 - buf_len - 3 < info_len) {
+                memcpy(buf + buf_len, amip->info, 128 - buf_len - 3);
+                buf_len = 128 - 3;
+            } else {
+                n = BIO_snprintf(buf + buf_len, sizeof(buf) - buf_len, "%s",
+                                 amip->info);
+                if (n < 0)
+                    break;
+                buf_len += n;
+            }
+            n = BIO_snprintf(buf + buf_len, sizeof(buf) - buf_len, "\"\n");
+            if (n <= 0)
+                break;
+
+            l->print_cb(buf, buf_len + n, l->print_cb_arg);
+
+            amip = amip->next;
+        }
+        while (amip && CRYPTO_THREAD_compare_id(amip->threadid, ti));
+    }
+
+#ifndef OPENSSL_NO_CRYPTO_MDEBUG_BACKTRACE
+    {
+        size_t i;
+        char **strings = backtrace_symbols(m->array, m->array_siz);
+
+        for (i = 0; i < m->array_siz; i++)
+            fprintf(stderr, "##> %s\n", strings[i]);
+        free(strings);
+    }
 #endif
+}
+
+IMPLEMENT_LHASH_DOALL_ARG_CONST(MEM, MEM_LEAK);
+
+int CRYPTO_mem_leaks_cb(int (*cb) (const char *str, size_t len, void *u),
+                        void *u)
+{
+    MEM_LEAK ml;
+
+    /* Ensure all resources are released */
+    OPENSSL_cleanup();
+
+    if (!RUN_ONCE(&memdbg_init, do_memdbg_init))
+        return -1;
+
+    CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
+
+    ml.print_cb = cb;
+    ml.print_cb_arg = u;
+    ml.bytes = 0;
+    ml.chunks = 0;
+    if (mh != NULL)
+        lh_MEM_doall_MEM_LEAK(mh, print_leak, &ml);
+
+    if (ml.chunks != 0) {
+        char buf[256];
+
+        BIO_snprintf(buf, sizeof(buf), "%ld bytes leaked in %d chunks\n",
+                     ml.bytes, ml.chunks);
+        cb(buf, strlen(buf), u);
+    } else {
+        /*
+         * Make sure that, if we found no leaks, memory-leak debugging itself
+         * does not introduce memory leaks (which might irritate external
+         * debugging tools). (When someone enables leak checking, but does not
+         * call this function, we declare it to be their fault.)
+         */
+        int old_mh_mode;
+
+        CRYPTO_THREAD_write_lock(memdbg_lock);
+
+        /*
+         * avoid deadlock when lh_free() uses CRYPTO_mem_debug_free(), which uses
+         * mem_check_on
+         */
+        old_mh_mode = mh_mode;
+        mh_mode = CRYPTO_MEM_CHECK_OFF;
+
+        lh_MEM_free(mh);
+        mh = NULL;
+
+        mh_mode = old_mh_mode;
+        CRYPTO_THREAD_unlock(memdbg_lock);
+    }
+    CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_OFF);
+
+    /* Clean up locks etc */
+    CRYPTO_THREAD_cleanup_local(&appinfokey);
+    CRYPTO_THREAD_lock_free(memdbg_lock);
+    CRYPTO_THREAD_lock_free(long_memdbg_lock);
+    memdbg_lock = NULL;
+    long_memdbg_lock = NULL;
+
+    return ml.chunks == 0 ? 1 : 0;
+}
+
+static int print_bio(const char *str, size_t len, void *b)
+{
+    return BIO_write((BIO *)b, str, len);
+}
+
+int CRYPTO_mem_leaks(BIO *b)
+{
+    /*
+     * OPENSSL_cleanup() will free the ex_data locks so we can't have any
+     * ex_data hanging around
+     */
+    bio_free_ex_data(b);
+
+    return CRYPTO_mem_leaks_cb(print_bio, b);
+}
+
+# ifndef OPENSSL_NO_STDIO
+int CRYPTO_mem_leaks_fp(FILE *fp)
+{
+    BIO *b;
+    int ret;
+
+    /*
+     * Need to turn off memory checking when allocated BIOs ... especially as
+     * we're creating them at a time when we're trying to check we've not
+     * left anything un-free()'d!!
+     */
+    CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_DISABLE);
+    b = BIO_new(BIO_s_file());
+    CRYPTO_mem_ctrl(CRYPTO_MEM_CHECK_ENABLE);
+    if (b == NULL)
+        return -1;
+    BIO_set_fp(b, fp, BIO_NOCLOSE);
+    ret = CRYPTO_mem_leaks_cb(print_bio, b);
+    BIO_free(b);
+    return ret;
+}
+# endif
 
-       switch(before_p)
-               {
-       case 0:
-               break;
-       case 1:
-               if (addr2 == NULL)
-                       break;
-
-               if (addr1 == NULL)
-                       {
-                       CRYPTO_dbg_malloc(addr2, num, file, line, 128 | before_p);
-                       break;
-                       }
-
-               if (is_MemCheck_on())
-                       {
-                       MemCheck_off(); /* make sure we hold MALLOC2 lock */
-
-                       m.addr=addr1;
-                       mp=lh_MEM_delete(mh,&m);
-                       if (mp != NULL)
-                               {
-#ifdef LEVITTE_DEBUG_MEM
-                               fprintf(stderr, "LEVITTE_DEBUG_MEM: [%5ld] * 0x%p (%d) -> 0x%p (%d)\n",
-                                       mp->order,
-                                       mp->addr, mp->num,
-                                       addr2, num);
-#endif
-                               mp->addr=addr2;
-                               mp->num=num;
-                               (void)lh_MEM_insert(mh,mp);
-                               }
-
-                       MemCheck_on(); /* release MALLOC2 lock
-                                       * if num_disabled drops to 0 */
-                       }
-               break;
-               }
-       return;
-       }
-
-
-typedef struct mem_leak_st
-       {
-       BIO *bio;
-       int chunks;
-       long bytes;
-       } MEM_LEAK;
-
-static void print_leak_doall_arg(const MEM *m, MEM_LEAK *l)
-       {
-       char buf[1024];
-       char *bufp = buf;
-       APP_INFO *amip;
-       int ami_cnt;
-       struct tm *lcl = NULL;
-       CRYPTO_THREADID ti;
-
-#define BUF_REMAIN (sizeof buf - (size_t)(bufp - buf))
-
-       if(m->addr == (char *)l->bio)
-           return;
-
-       if (options & V_CRYPTO_MDEBUG_TIME)
-               {
-               lcl = localtime(&m->time);
-       
-               BIO_snprintf(bufp, BUF_REMAIN, "[%02d:%02d:%02d] ",
-                       lcl->tm_hour,lcl->tm_min,lcl->tm_sec);
-               bufp += strlen(bufp);
-               }
-
-       BIO_snprintf(bufp, BUF_REMAIN, "%5lu file=%s, line=%d, ",
-               m->order,m->file,m->line);
-       bufp += strlen(bufp);
-
-       if (options & V_CRYPTO_MDEBUG_THREAD)
-               {
-               BIO_snprintf(bufp, BUF_REMAIN, "thread=%lu, ",
-                       CRYPTO_THREADID_hash(&m->threadid));
-               bufp += strlen(bufp);
-               }
-
-       BIO_snprintf(bufp, BUF_REMAIN, "number=%d, address=%08lX\n",
-               m->num,(unsigned long)m->addr);
-       bufp += strlen(bufp);
-
-       BIO_puts(l->bio,buf);
-       
-       l->chunks++;
-       l->bytes+=m->num;
-
-       amip=m->app_info;
-       ami_cnt=0;
-       if (!amip)
-               return;
-       CRYPTO_THREADID_cpy(&ti, &amip->threadid);
-
-       do
-               {
-               int buf_len;
-               int info_len;
-
-               ami_cnt++;
-               memset(buf,'>',ami_cnt);
-               BIO_snprintf(buf + ami_cnt, sizeof buf - ami_cnt,
-                       " thread=%lu, file=%s, line=%d, info=\"",
-                       CRYPTO_THREADID_hash(&amip->threadid), amip->file,
-                       amip->line);
-               buf_len=strlen(buf);
-               info_len=strlen(amip->info);
-               if (128 - buf_len - 3 < info_len)
-                       {
-                       memcpy(buf + buf_len, amip->info, 128 - buf_len - 3);
-                       buf_len = 128 - 3;
-                       }
-               else
-                       {
-                       BUF_strlcpy(buf + buf_len, amip->info,
-                                   sizeof buf - buf_len);
-                       buf_len = strlen(buf);
-                       }
-               BIO_snprintf(buf + buf_len, sizeof buf - buf_len, "\"\n");
-               
-               BIO_puts(l->bio,buf);
-
-               amip = amip->next;
-               }
-       while(amip && !CRYPTO_THREADID_cmp(&amip->threadid, &ti));
-
-#ifdef LEVITTE_DEBUG_MEM
-       if (amip)
-               {
-               fprintf(stderr, "Thread switch detected in backtrace!!!!\n");
-               abort();
-               }
 #endif
-       }
-
-static IMPLEMENT_LHASH_DOALL_ARG_FN(print_leak, const MEM, MEM_LEAK)
-
-void CRYPTO_mem_leaks(BIO *b)
-       {
-       MEM_LEAK ml;
-
-       if (mh == NULL && amih == NULL)
-               return;
-
-       MemCheck_off(); /* obtain MALLOC2 lock */
-
-       ml.bio=b;
-       ml.bytes=0;
-       ml.chunks=0;
-       if (mh != NULL)
-               lh_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(print_leak), MEM_LEAK,
-                                &ml);
-       if (ml.chunks != 0)
-               {
-               BIO_printf(b,"%ld bytes leaked in %d chunks\n",
-                          ml.bytes,ml.chunks);
-#ifdef CRYPTO_MDEBUG_ABORT
-               abort();
-#endif
-               }
-       else
-               {
-               /* Make sure that, if we found no leaks, memory-leak debugging itself
-                * does not introduce memory leaks (which might irritate
-                * external debugging tools).
-                * (When someone enables leak checking, but does not call
-                * this function, we declare it to be their fault.)
-                *
-                * XXX    This should be in CRYPTO_mem_leaks_cb,
-                * and CRYPTO_mem_leaks should be implemented by
-                * using CRYPTO_mem_leaks_cb.
-                * (Also their should be a variant of lh_doall_arg
-                * that takes a function pointer instead of a void *;
-                * this would obviate the ugly and illegal
-                * void_fn_to_char kludge in CRYPTO_mem_leaks_cb.
-                * Otherwise the code police will come and get us.)
-                */
-               int old_mh_mode;
-
-               CRYPTO_w_lock(CRYPTO_LOCK_MALLOC);
-
-               /* avoid deadlock when lh_free() uses CRYPTO_dbg_free(),
-                * which uses CRYPTO_is_mem_check_on */
-               old_mh_mode = mh_mode;
-               mh_mode = CRYPTO_MEM_CHECK_OFF;
-
-               if (mh != NULL)
-                       {
-                       lh_MEM_free(mh);
-                       mh = NULL;
-                       }
-               if (amih != NULL)
-                       {
-                       if (lh_APP_INFO_num_items(amih) == 0) 
-                               {
-                               lh_APP_INFO_free(amih);
-                               amih = NULL;
-                               }
-                       }
-
-               mh_mode = old_mh_mode;
-               CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC);
-               }
-       MemCheck_on(); /* release MALLOC2 lock */
-       }
-
-#ifndef OPENSSL_NO_FP_API
-void CRYPTO_mem_leaks_fp(FILE *fp)
-       {
-       BIO *b;
-
-       if (mh == NULL) return;
-       /* Need to turn off memory checking when allocated BIOs ... especially
-        * as we're creating them at a time when we're trying to check we've not
-        * left anything un-free()'d!! */
-       MemCheck_off();
-       b = BIO_new(BIO_s_file());
-       MemCheck_on();
-       if(!b) return;
-       BIO_set_fp(b,fp,BIO_NOCLOSE);
-       CRYPTO_mem_leaks(b);
-       BIO_free(b);
-       }
-#endif
-
-
-
-/* FIXME: We really don't allow much to the callback.  For example, it has
-   no chance of reaching the info stack for the item it processes.  Should
-   it really be this way?  -- Richard Levitte */
-/* NB: The prototypes have been typedef'd to CRYPTO_MEM_LEAK_CB inside crypto.h
- * If this code is restructured, remove the callback type if it is no longer
- * needed. -- Geoff Thorpe */
-
-/* Can't pass CRYPTO_MEM_LEAK_CB directly to lh_MEM_doall_arg because it
- * is a function pointer and conversion to void * is prohibited. Instead
- * pass its address
- */
-
-typedef CRYPTO_MEM_LEAK_CB *PCRYPTO_MEM_LEAK_CB;
-
-static void cb_leak_doall_arg(const MEM *m, PCRYPTO_MEM_LEAK_CB *cb)
-       {
-       (*cb)(m->order,m->file,m->line,m->num,m->addr);
-       }
-
-static IMPLEMENT_LHASH_DOALL_ARG_FN(cb_leak, const MEM, PCRYPTO_MEM_LEAK_CB)
-
-void CRYPTO_mem_leaks_cb(CRYPTO_MEM_LEAK_CB *cb)
-       {
-       if (mh == NULL) return;
-       CRYPTO_w_lock(CRYPTO_LOCK_MALLOC2);
-       lh_MEM_doall_arg(mh, LHASH_DOALL_ARG_FN(cb_leak), PCRYPTO_MEM_LEAK_CB,
-                        &cb);
-       CRYPTO_w_unlock(CRYPTO_LOCK_MALLOC2);
-       }