+static int allow_customize = 1; /* we provide flexible functions for */
+static int allow_customize_debug = 1;/* exchanging memory-related functions at
+ * run-time, but this must be done
+ * before any blocks are actually
+ * allocated; or we'll run into huge
+ * problems when malloc/free pairs
+ * don't match etc. */
+
+/* may be changed as long as `allow_customize' is set */
+static void *(*malloc_locked_func)(size_t) = malloc;
+static void (*free_locked_func)(void *) = free;
+static void *(*malloc_func)(size_t) = malloc;
+static void *(*realloc_func)(void *, size_t)= realloc;
+static void (*free_func)(void *) = free;
+
+/* may be changed as long as `allow_customize_debug' is set */
+/* XXX use correct function pointer types */
+#ifdef CRYPTO_MDEBUG
+ /* use default functions from mem_dbg.c */
+ static void (*malloc_debug_func)()= (void (*)())CRYPTO_dbg_malloc;
+ static void (*realloc_debug_func)()= (void (*)())CRYPTO_dbg_realloc;
+ static void (*free_debug_func)()= (void (*)())CRYPTO_dbg_free;
+ static void (*set_debug_options_func)()= (void (*)())CRYPTO_dbg_set_options;
+ static long (*get_debug_options_func)()= (long (*)())CRYPTO_dbg_get_options;
+#else
+ /* applications can use CRYPTO_malloc_debug_init() to select above case
+ * at run-time */
+ static void (*malloc_debug_func)()= NULL;
+ static void (*realloc_debug_func)()= NULL;
+ static void (*free_debug_func)()= NULL;
+ static void (*set_debug_options_func)()= NULL;
+ static long (*get_debug_options_func)()= NULL;