Merge with 4.0.21

BitKeeper/etc/logging_ok:
  auto-union
Build-tools/mysql-copyright-2:
  Auto merged
include/violite.h:
  Auto merged
innobase/btr/btr0btr.c:
  Auto merged
innobase/buf/buf0buf.c:
  Auto merged
innobase/buf/buf0flu.c:
  Auto merged
innobase/buf/buf0lru.c:
  Auto merged
innobase/dict/dict0dict.c:
  Auto merged
innobase/dict/dict0mem.c:
  Auto merged
innobase/fsp/fsp0fsp.c:
  Auto merged
innobase/fut/fut0lst.c:
  Auto merged
innobase/ha/hash0hash.c:
  Auto merged
innobase/include/buf0buf.ic:
  Auto merged
innobase/include/buf0lru.h:
  Auto merged
innobase/include/data0data.h:
  Auto merged
innobase/include/dict0dict.h:
  Auto merged
innobase/include/dict0mem.h:
  Auto merged
innobase/include/fsp0fsp.h:
  Auto merged
innobase/include/hash0hash.h:
  Auto merged
innobase/include/lock0lock.h:
  Auto merged
innobase/include/log0log.h:
  Auto merged
innobase/include/log0log.ic:
  Auto merged
innobase/include/mem0dbg.ic:
  Auto merged
innobase/include/mem0pool.h:
  Auto merged
innobase/include/mtr0mtr.h:
  Auto merged
innobase/include/sync0rw.h:
  Auto merged
innobase/include/sync0sync.h:
  Auto merged
innobase/include/trx0roll.h:
  Auto merged
innobase/include/trx0trx.h:
  Auto merged
innobase/include/ut0mem.h:
  Auto merged
innobase/lock/lock0lock.c:
  Auto merged
innobase/log/log0log.c:
  Auto merged
innobase/mem/mem0dbg.c:
  Auto merged
innobase/mem/mem0pool.c:
  Auto merged
innobase/mtr/mtr0mtr.c:
  Auto merged
innobase/pars/lexyy.c:
  Auto merged
innobase/pars/pars0opt.c:
  Auto merged
innobase/que/que0que.c:
  Auto merged
innobase/rem/rem0cmp.c:
  Auto merged
innobase/row/row0ins.c:
  Auto merged
innobase/row/row0mysql.c:
  Auto merged
innobase/row/row0upd.c:
  Auto merged
innobase/srv/srv0srv.c:
  Auto merged
innobase/srv/srv0start.c:
  Auto merged
innobase/sync/sync0rw.c:
  Auto merged
innobase/sync/sync0sync.c:
  Auto merged
innobase/thr/thr0loc.c:
  Auto merged
innobase/trx/trx0purge.c:
  Auto merged
innobase/trx/trx0roll.c:
  Auto merged
innobase/trx/trx0sys.c:
  Auto merged
innobase/trx/trx0trx.c:
  Auto merged
innobase/usr/usr0sess.c:
  Auto merged
innobase/ut/ut0mem.c:
  Auto merged
mysql-test/r/func_if.result:
  Auto merged
mysql-test/r/type_date.result:
  Auto merged
mysql-test/t/type_date.test:
  Auto merged
mysql-test/t/type_decimal.test:
  Auto merged
mysys/mf_tempfile.c:
  Auto merged
netware/BUILD/nwbootstrap:
  Auto merged
netware/Makefile.am:
  Auto merged
scripts/mysqld_safe.sh:
  Auto merged
sql/item_cmpfunc.cc:
  Auto merged
mysql-test/t/func_if.test:
  Auto merged
sql/mysqld.cc:
  Auto merged
sql/opt_range.cc:
  Auto merged
sql/sql_acl.cc:
  Auto merged
sql/sql_parse.cc:
  Auto merged
support-files/my-innodb-heavy-4G.cnf.sh:
  Auto merged
Build-tools/Do-compile:
  Merge with 4.0
Build-tools/mysql-copyright:
  Merge with 4.0
client/mysqltest.c:
  Merge with 4.0
include/my_global.h:
  Merge with 4.0
innobase/buf/buf0rea.c:
  Merge with 4.0
innobase/data/data0type.c:
  Merge with 4.0
innobase/ibuf/ibuf0ibuf.c:
  Merge with 4.0
innobase/include/buf0buf.h:
  Merge with 4.0
innobase/include/data0type.h:
  Merge with 4.0
innobase/include/mem0mem.h:
  Merge with 4.0
innobase/include/mem0mem.ic:
  Merge with 4.0
innobase/log/log0recv.c:
  Merge with 4.0
libmysql/libmysql.c:
  Merge with 4.0
libmysqld/Makefile.am:
  Merge with 4.0
mysql-test/r/range.result:
  Merge with 4.0
mysql-test/r/type_decimal.result:
  Merge with 4.0
mysql-test/t/range.test:
  Merge with 4.0
netware/BUILD/mwenv:
  Merge with 4.0
netware/mysql_test_run.c:
  Merge with 4.0
scripts/mysql_install_db.sh:
  Merge with 4.0
sql/field.cc:
  Merge with 4.0
sql/field.h:
  Merge with 4.0
sql/item_cmpfunc.h:
  Merge with 4.0
support-files/my-huge.cnf.sh:
  Merge with 4.0
support-files/my-large.cnf.sh:
  Merge with 4.0
support-files/my-medium.cnf.sh:
  Merge with 4.0
support-files/my-small.cnf.sh:
  Merge with 4.0
support-files/mysql.spec.sh:
  Merge with 4.0

1 files changed, 75 insertions, 0 deletions

diff --git a/innobase/ut/ut0mem.c b/innobase/ut/ut0mem.c
index 47b612d757e..9a591df9f77 100644
--- a/innobase/ut/ut0mem.c
+++ b/innobase/ut/ut0mem.c
@@ -203,6 +203,81 @@ ut_free(
 }
 
 /**************************************************************************
+Implements realloc. This is needed by /pars/lexyy.c. Otherwise, you should not
+use this function because the allocation functions in mem0mem.h are the
+recommended ones in InnoDB.
+
+man realloc in Linux, 2004:
+
+       realloc()  changes the size of the memory block pointed to
+       by ptr to size bytes.  The contents will be  unchanged  to
+       the minimum of the old and new sizes; newly allocated mem­
+       ory will be uninitialized.  If ptr is NULL,  the  call  is
+       equivalent  to malloc(size); if size is equal to zero, the
+       call is equivalent to free(ptr).  Unless ptr is  NULL,  it
+       must  have  been  returned by an earlier call to malloc(),
+       calloc() or realloc().
+
+RETURN VALUE
+       realloc() returns a pointer to the newly allocated memory,
+       which is suitably aligned for any kind of variable and may
+       be different from ptr, or NULL if the  request  fails.  If
+       size  was equal to 0, either NULL or a pointer suitable to
+       be passed to free() is returned.  If realloc()  fails  the
+       original  block  is  left  untouched  - it is not freed or
+       moved. */
+
+void*
+ut_realloc(
+/*=======*/
+			/* out, own: pointer to new mem block or NULL */
+	void*	ptr,	/* in: pointer to old block or NULL */
+	ulint	size)	/* in: desired size */
+{
+        ut_mem_block_t* block;
+	ulint		old_size;
+	ulint		min_size;
+	void*		new_ptr;
+
+	if (ptr == NULL) {
+
+		return(ut_malloc(size));
+	}
+
+	if (size == 0) {
+		ut_free(ptr);
+
+		return(NULL);
+	}
+
+	block = (ut_mem_block_t*)((byte*)ptr - sizeof(ut_mem_block_t));
+
+	ut_a(block->magic_n == UT_MEM_MAGIC_N);
+
+	old_size = block->size - sizeof(ut_mem_block_t);
+
+	if (size < old_size) {
+		min_size = size;
+	} else {
+		min_size = old_size;
+	}
+		
+	new_ptr = ut_malloc(size);
+
+	if (new_ptr == NULL) {
+
+		return(NULL);
+	}				
+
+	/* Copy the old data from ptr */
+	ut_memcpy(new_ptr, ptr, min_size);
+
+	ut_free(ptr);
+
+	return(new_ptr);		
+}
+
+/**************************************************************************
 Frees in shutdown all allocated memory not freed yet. */
 
 void