Remove redundant UT_LIST_INIT() calls

The macro UT_LIST_INIT() zero-initializes the UT_LIST_NODE.
There is no need to call this macro on a buffer that has
already been zero-initialized by mem_zalloc() or mem_heap_zalloc()
or similar.

For some reason, the statement UT_LIST_INIT(srv_sys->tasks) in
srv_init() caused a SIGSEGV on server startup when compiling with
GCC 7.1.0 for AMD64 using -O3. The zero-initialization was attempted
by the instruction movaps %xmm0,0x50(%rax), while the proper offset
of srv_sys->tasks would seem to have been 0x48.

10 files changed, 8 insertions, 24 deletions

diff --git a/storage/innobase/buf/buf0buf.cc b/storage/innobase/buf/buf0buf.cc
index 0b305507271..83102ab1616 100644
--- a/storage/innobase/buf/buf0buf.cc
+++ b/storage/innobase/buf/buf0buf.cc
@@ -2,6 +2,7 @@
 
 Copyright (c) 1995, 2016, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2008, Google Inc.
+Copyright (c) 2017, MariaDB Corporation.
 
 Portions of this file contain modifications contributed and copyrighted by
 Google, Inc. Those modifications are gratefully acknowledged and are described
@@ -1343,8 +1344,6 @@ buf_pool_init_instance(
 		buf_pool->chunks = chunk =
 			(buf_chunk_t*) mem_zalloc(sizeof *chunk);
 
-		UT_LIST_INIT(buf_pool->free);
-
 		if (!buf_chunk_init(buf_pool, chunk, buf_pool_size)) {
 			mem_free(chunk);
 			mem_free(buf_pool);
diff --git a/storage/innobase/fil/fil0fil.cc b/storage/innobase/fil/fil0fil.cc
index 72ee8d74a82..36179960054 100644
--- a/storage/innobase/fil/fil0fil.cc
+++ b/storage/innobase/fil/fil0fil.cc
@@ -1,7 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 1995, 2016, Oracle and/or its affiliates. All Rights Reserved.
-Copyright (c) 2014, 2017, MariaDB Corporation. All Rights Reserved.
+Copyright (c) 2014, 2017, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -1546,8 +1546,6 @@ fil_init(
 	fil_system->spaces = hash_create(hash_size);
 	fil_system->name_hash = hash_create(hash_size);
 
-	UT_LIST_INIT(fil_system->LRU);
-
 	fil_system->max_n_open = max_n_open;
 }
 
diff --git a/storage/innobase/row/row0ftsort.cc b/storage/innobase/row/row0ftsort.cc
index 5b8ed009a2a..db570467414 100644
--- a/storage/innobase/row/row0ftsort.cc
+++ b/storage/innobase/row/row0ftsort.cc
@@ -1,6 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 2010, 2016, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2017, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -225,9 +226,6 @@ row_fts_psort_info_init(
 	each parallel sort thread. Each "sort bucket" holds records for
 	a particular "FTS index partition" */
 	for (j = 0; j < fts_sort_pll_degree; j++) {
-
-		UT_LIST_INIT(psort_info[j].fts_doc_list);
-
 		for (i = 0; i < FTS_NUM_AUX_INDEX; i++) {
 
 			psort_info[j].merge_file[i] =
diff --git a/storage/innobase/srv/srv0srv.cc b/storage/innobase/srv/srv0srv.cc
index 067e32a83aa..7beacc76615 100644
--- a/storage/innobase/srv/srv0srv.cc
+++ b/storage/innobase/srv/srv0srv.cc
@@ -1011,8 +1011,6 @@ srv_init(void)
 		srv_monitor_event = os_event_create();
 
 		srv_buf_dump_event = os_event_create();
-
-		UT_LIST_INIT(srv_sys->tasks);
 	}
 
 	/* page_zip_stat_per_index_mutex is acquired from:
diff --git a/storage/innobase/usr/usr0sess.cc b/storage/innobase/usr/usr0sess.cc
index ab7ba6bea09..e1bd71ff1a0 100644
--- a/storage/innobase/usr/usr0sess.cc
+++ b/storage/innobase/usr/usr0sess.cc
@@ -1,6 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 1996, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2017, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -48,8 +49,6 @@ sess_open(void)
 	sess->trx = trx_allocate_for_background();
 	sess->trx->sess = sess;
 
-	UT_LIST_INIT(sess->graphs);
-
 	return(sess);
 }
 
diff --git a/storage/xtradb/buf/buf0buf.cc b/storage/xtradb/buf/buf0buf.cc
index 07b84c60c76..2785a2a33df 100644
--- a/storage/xtradb/buf/buf0buf.cc
+++ b/storage/xtradb/buf/buf0buf.cc
@@ -2,6 +2,7 @@
 
 Copyright (c) 1995, 2016, Oracle and/or its affiliates. All Rights Reserved.
 Copyright (c) 2008, Google Inc.
+Copyright (c) 2017, MariaDB Corporation.
 
 Portions of this file contain modifications contributed and copyrighted by
 Google, Inc. Those modifications are gratefully acknowledged and are described
@@ -1432,8 +1433,6 @@ buf_pool_init_instance(
 		buf_pool->chunks = chunk =
 			(buf_chunk_t*) mem_zalloc(sizeof *chunk);
 
-		UT_LIST_INIT(buf_pool->free);
-
 		if (!buf_chunk_init(buf_pool, chunk, buf_pool_size)) {
 			mem_free(chunk);
 			mem_free(buf_pool);
diff --git a/storage/xtradb/fil/fil0fil.cc b/storage/xtradb/fil/fil0fil.cc
index 1a866a693ca..d528164c6f4 100644
--- a/storage/xtradb/fil/fil0fil.cc
+++ b/storage/xtradb/fil/fil0fil.cc
@@ -1,7 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 1995, 2016, Oracle and/or its affiliates. All Rights Reserved.
-Copyright (c) 2014, 2017, MariaDB Corporation. All Rights Reserved.
+Copyright (c) 2014, 2017, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -1598,8 +1598,6 @@ fil_init(
 	fil_system->spaces = hash_create(hash_size);
 	fil_system->name_hash = hash_create(hash_size);
 
-	UT_LIST_INIT(fil_system->LRU);
-
 	fil_system->max_n_open = max_n_open;
 }
 
diff --git a/storage/xtradb/row/row0ftsort.cc b/storage/xtradb/row/row0ftsort.cc
index 13877b8fe08..734b4f8b2f7 100644
--- a/storage/xtradb/row/row0ftsort.cc
+++ b/storage/xtradb/row/row0ftsort.cc
@@ -1,6 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 2010, 2016, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2017, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -228,9 +229,6 @@ row_fts_psort_info_init(
 	each parallel sort thread. Each "sort bucket" holds records for
 	a particular "FTS index partition" */
 	for (j = 0; j < fts_sort_pll_degree; j++) {
-
-		UT_LIST_INIT(psort_info[j].fts_doc_list);
-
 		for (i = 0; i < FTS_NUM_AUX_INDEX; i++) {
 
 			psort_info[j].merge_file[i] =
diff --git a/storage/xtradb/srv/srv0srv.cc b/storage/xtradb/srv/srv0srv.cc
index 5b3f86d8641..22a96b7446a 100644
--- a/storage/xtradb/srv/srv0srv.cc
+++ b/storage/xtradb/srv/srv0srv.cc
@@ -1164,8 +1164,6 @@ srv_init(void)
 		if (srv_track_changed_pages) {
 			os_event_set(srv_redo_log_tracked_event);
 		}
-
-		UT_LIST_INIT(srv_sys->tasks);
 	}
 
 	/* page_zip_stat_per_index_mutex is acquired from:
diff --git a/storage/xtradb/usr/usr0sess.cc b/storage/xtradb/usr/usr0sess.cc
index ab7ba6bea09..e1bd71ff1a0 100644
--- a/storage/xtradb/usr/usr0sess.cc
+++ b/storage/xtradb/usr/usr0sess.cc
@@ -1,6 +1,7 @@
 /*****************************************************************************
 
 Copyright (c) 1996, 2011, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2017, MariaDB Corporation.
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -48,8 +49,6 @@ sess_open(void)
 	sess->trx = trx_allocate_for_background();
 	sess->trx->sess = sess;
 
-	UT_LIST_INIT(sess->graphs);
-
 	return(sess);
 }