diff --git a/libmysqld/libmysql.c b/libmysqld/libmysql.c

index 13f7f074d80..f1c0f9a0b79 100644

--- a/libmysqld/libmysql.c

+++ b/libmysqld/libmysql.c

@@ -153,7 +153,7 @@ int STDCALL mysql_server_init(int argc __attribute__((unused)),

         line options.

       */

-#if MYSQL_PORT_DEFAULT == 0

+#if 0 /* MYSQL_PORT_DEFAULT == 0 */

       if ((serv_ptr= getservbyname("mysql", "tcp")))

         mysql_port= (uint) ntohs((ushort) serv_ptr->s_port);

 #endif

diff --git a/sql/mysqld.cc b/sql/mysqld.cc

index 33e15b1db07..02d6b3948a3 100644

--- a/sql/mysqld.cc

+++ b/sql/mysqld.cc

@@ -2418,7 +2418,7 @@ static void set_ports()

       line options.

     */

-#if MYSQL_PORT_DEFAULT == 0

+#if 0 // MYSQL_PORT_DEFAULT == 0

     struct  servent *serv_ptr;

     if ((serv_ptr= getservbyname("mysql", "tcp")))

       SYSVAR_AUTOSIZE(mysqld_port, ntohs((u_short) serv_ptr->s_port));

diff --git a/libmariadb/libmariadb/mariadb_lib.c b/libmariadb/libmariadb/mariadb_lib.c

index d43b68c..fb6236f 100644

--- a/libmariadb/libmariadb/mariadb_lib.c

+++ b/libmariadb/libmariadb/mariadb_lib.c

@@ -3539,12 +3539,16 @@ static void mysql_once_init()

   }

   if (!mysql_port)

   {

+#if 0

     struct servent *serv_ptr;

+#endif

     char *env;

     mysql_port = MARIADB_PORT;

+#if 0

     if ((serv_ptr = getservbyname("mysql", "tcp")))

       mysql_port = (uint)ntohs((ushort)serv_ptr->s_port);

+#endif

     if ((env = getenv("MYSQL_TCP_PORT")))

       mysql_port =(uint)atoi(env);

   }

CURRENT_TEST: main.1st

Could not execute 'check-testcase' before testcase 'main.1st' (res: 77):

mysqltest: Logging to '/dev/shm/10.2m/mysql-test/var/tmp/check-mysqld_1.log'.

mysqltest: Results saved in '/dev/shm/10.2m/mysql-test/var/tmp/check-mysqld_1.result'.

mysqltest: Connecting to server localhost:16000 (socket /dev/shm/10.2m/mysql-test/var/tmp/mysqld.1.sock) as 'root', connection 'default', attempt 0 ...

mysqltest: ... Connected.

mysqltest: Start processing test commands from './include/check-testcase.test' ...

mysqltest: At line 87: Regex error: No match

mysqltest got signal 7

read_command_buf (0x731000000008): cat_file

conn->name (0x701000009f78): ==13460==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x635a27 in safe_print_str /mariadb/10.2o/mysys/stacktrace.c:96:3

    #1 0x635a27 in my_safe_print_str /mariadb/10.2o/mysys/stacktrace.c:156

    #2 0x5204dc in dump_backtrace() /mariadb/10.2o/client/mysqltest.cc:9055:5

    #3 0x5201a2 in signal_handler(int) /mariadb/10.2o/client/mysqltest.cc:9079:3

    #4 0x484ca8 in SignalHandler(int) (/dev/shm/10.2m/client/mysqltest+0x484ca8)

    #5 0x7f728dd2172f  (/lib/x86_64-linux-gnu/libpthread.so.0+0x1272f)

    #6 0x7f728d6f273b  (/lib/x86_64-linux-gnu/libc.so.6+0xd473b)

    #7 0x7f728d6fc480 in regfree (/lib/x86_64-linux-gnu/libc.so.6+0xde480)

    #8 0x46ed60 in regfree (/dev/shm/10.2m/client/mysqltest+0x46ed60)

    #9 0x4be28c in free_re() /mariadb/10.2o/client/mysqltest.cc:8928:3

    #10 0x4be28c in free_used_memory() /mariadb/10.2o/client/mysqltest.cc:1534

    #11 0x4c0179 in cleanup_and_exit(int) /mariadb/10.2o/client/mysqltest.cc:1546:3

    #12 0x4bf7d1 in really_die(char const*) /mariadb/10.2o/client/mysqltest.cc

    #13 0x4bb82e in die(char const*, ...) /mariadb/10.2o/client/mysqltest.cc:1629:3

    #14 0x51d946 in reg_replace(char**, int*, char*, char*, char*, int) /mariadb/10.2o/client/mysqltest.cc

    #15 0x4cc143 in multi_reg_replace(st_replace_regex*, char*) /mariadb/10.2o/client/mysqltest.cc:10303:10

    #16 0x4c20a9 in replace_dynstr_append_mem(st_dynamic_string*, char const*, unsigned long) /mariadb/10.2o/client/mysqltest.cc:11188:10

    #17 0x4c1c74 in cat_file(st_dynamic_string*, char const*) /mariadb/10.2o/client/mysqltest.cc:1815:5

    #18 0x4db174 in do_cat_file(st_command*) /mariadb/10.2o/client/mysqltest.cc:4399:10

    #19 0x50dd82 in main /mariadb/10.2o/client/mysqltest.cc:9505:24

    #20 0x7f728d64209a in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x2409a)

    #21 0x438ae9 in _start (/dev/shm/10.2m/client/mysqltest+0x438ae9)

  Uninitialized value was created by a heap deallocation

    #0 0x43ee19 in free (/dev/shm/10.2m/client/mysqltest+0x43ee19)

    #1 0x6266c4 in my_free /mariadb/10.2o/mysys/my_malloc.c:218:5

diff --git a/client/mysqltest.cc b/client/mysqltest.cc

index 60a203ccedd..13b20407685 100644

--- a/client/mysqltest.cc

+++ b/client/mysqltest.cc

@@ -10189,6 +10189,7 @@ struct st_replace_regex* init_replace_regex(char* expr)

 }

+__attribute__((no_sanitize("memory"))) // for var_get()

 void append_replace_regex(char* expr, char *expr_end, struct st_replace_regex* res,

                           char **buf_p)

 {

@@ -10382,6 +10383,7 @@ void free_replace_regex()

   string - the string to perform substitutions in

   icase - flag, if set to 1 the match is case insensitive

 */

+__attribute__((no_sanitize("memory")))

 int reg_replace(char** buf_p, int* buf_len_p, char *pattern,

                 char *replace, char *string, int icase)

 {

CURRENT_TEST: encryption.innodb-force-corrupt

mysqltest: At line 11: query 'call mtr.add_suppression("InnoDB: Encrypted page \\[page id: space=\\d+, page number=[36]\\] in file .*test.t[123]\\.ibd looks corrupted; key_version=3221342974")' failed: 2013: Lost connection to MySQL server during query

CURRENT_TEST: sys_vars.innodb_max_dirty_pages_pct_basic

mysqltest: At line 95: query 'SET @@global.innodb_max_dirty_pages_pct = @global_start_value - 2' failed: 2013: Lost connection to MySQL server during query

…

==28406==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x3494d3f in dtoa /mariadb/10.2o/strings/dtoa.c:2227:7

    #1 0x348b16e in my_fcvt /mariadb/10.2o/strings/dtoa.c:96:8

    #2 0x34a9e04 in process_dbl_arg /mariadb/10.2o/strings/my_vsnprintf.c:246:10

    #3 0x34a9e04 in my_vsnprintf_ex /mariadb/10.2o/strings/my_vsnprintf.c:638

    #4 0x919029 in push_warning_printf(THD*, Sql_condition::enum_warning_level, unsigned int, char const*, ...) /mariadb/10.2o/sql/sql_error.cc:797:3

    #5 0x1cd10fb in innodb_max_dirty_pages_pct_update(THD*, st_mysql_sys_var*, void*, void const*) /mariadb/10.2o/storage/innobase/handler/ha_innodb.cc:17478:3

CURRENT_TEST: main.plugin_innodb

…

==30165==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x3494d3f in dtoa /mariadb/10.2o/strings/dtoa.c:2227:7

    #1 0x348b16e in my_fcvt /mariadb/10.2o/strings/dtoa.c:96:8

    #2 0x34a9e04 in process_dbl_arg /mariadb/10.2o/strings/my_vsnprintf.c:246:10

    #3 0x34a9e04 in my_vsnprintf_ex /mariadb/10.2o/strings/my_vsnprintf.c:638

    #4 0x34afc93 in my_vsnprintf /mariadb/10.2o/strings/my_vsnprintf.c:704:10

    #5 0x34afc93 in my_snprintf /mariadb/10.2o/strings/my_vsnprintf.c:713

    #6 0x7ff4b7586409 in show_func_example(THD*, st_mysql_show_var*, char*) /mariadb/10.2o/storage/example/ha_example.cc:1074:3

    #7 0xc5ed55 in show_status_array(THD*, char const*, st_mysql_show_var*, enum_var_type, system_status_var*, char const*, TABLE*, bool, Item*) /mariadb/10.2o/sql/sql_show.cc:3554:7

    #8 0xc5ee7e in show_status_array(THD*, char const*, st_mysql_show_var*, enum_var_type, system_status_var*, char const*, TABLE*, bool, Item*) /mariadb/10.2o/sql/sql_show.cc:3560:7

    #9 0xc6091b in fill_status(THD*, TABLE_LIST*, Item*) /mariadb/10.2o/sql/sql_show.cc:7557:8

    #10 0xc698c5 in get_schema_tables_result(JOIN*, enum_schema_table_state) /mariadb/10.2o/sql/sql_show.cc:8431:11

    #11 0xb437ea in JOIN::exec_inner() /mariadb/10.2o/sql/sql_select.cc:3591:7

    #12 0xb413b3 in JOIN::exec() /mariadb/10.2o/sql/sql_select.cc:3422:3

    #13 0xab6d0b in mysql_select(THD*, TABLE_LIST*, unsigned int, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /mariadb/10.2o/sql/sql_select.cc:3822:9

    #14 0xab5d58 in handle_select(THD*, LEX*, select_result*, unsigned long) /mariadb/10.2o/sql/sql_select.cc:365:10

    #15 0x9fb160 in execute_sqlcom_select(THD*, TABLE_LIST*) /mariadb/10.2o/sql/sql_parse.cc:6226:12

    #16 0x9d3a1d in execute_show_status(THD*, TABLE_LIST*) /mariadb/10.2o/sql/sql_parse.cc:6259:10

    #17 0x9d3a1d in mysql_execute_command(THD*) /mariadb/10.2o/sql/sql_parse.cc:3456

    #18 0x9c51b0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.2o/sql/sql_parse.cc:7760:18

    #19 0x9b41a5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.2o/sql/sql_parse.cc:1831:7

    #20 0x9be26d in do_command(THD*) /mariadb/10.2o/sql/sql_parse.cc:1385:17

    #21 0xee57b4 in do_handle_one_connection(CONNECT*) /mariadb/10.2o/sql/sql_connect.cc:1336:11

    #22 0xee4bf9 in handle_one_connection /mariadb/10.2o/sql/sql_connect.cc:1241:3

    #23 0x2fa6408 in pfs_spawn_thread /mariadb/10.2o/storage/perfschema/pfs.cc:1862:3

    #24 0x7ff4bf110fa2 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x7fa2)

    #25 0x7ff4be8ee4ce in clone (/lib/x86_64-linux-gnu/libc.so.6+0xf94ce)

  Uninitialized value was created by an allocation of 'buf' in the stack frame of function '_db_return_'

    #0 0x335dd10 in _db_return_ /mariadb/10.2o/dbug/dbug.c:1174

CURRENT_TEST: main.subselect_no_semijoin

/dev/shm/10.2m/client/mysqltest: Error on delete of '/dev/shm/10.2m/mysql-test/var/6/tmp/subselect.out.file.1' (Errcode: 2 "No such file or directory")

mysqltest: At line 27: query 'explain format=json

SELECT ( SELECT b FROM t2 WHERE b = a OR EXISTS ( SELECT c FROM t3 WHERE c = b ) ) FROM t1' failed: 2013: Lost connection to MySQL server during query

…

# End of 10.2 tests

#

# MDEV-19714: JOIN::pseudo_bits_cond is not visible in EXPLAIN FORMAT=JSON

#

CREATE TABLE t1 ( a INT );

INSERT INTO t1 VALUES (1),(5);

CREATE TABLE t2 ( b INT ) ENGINE=MyISAM;

INSERT INTO t2 VALUES (1);

CREATE TABLE t3 ( c INT );

INSERT INTO t3 VALUES (4),(5);

SET @tmp19714=@@optimizer_switch;

SET optimizer_switch='subquery_cache=off';

explain format=json

SELECT ( SELECT b FROM t2 WHERE b = a OR EXISTS ( SELECT c FROM t3 WHERE c = b ) ) FROM t1;

…

==29984==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x3494d3f in dtoa /mariadb/10.2o/strings/dtoa.c:2227:7

    #1 0x34967dd in my_gcvt /mariadb/10.2o/strings/dtoa.c:225:8

    #2 0x34a9efe in process_dbl_arg /mariadb/10.2o/strings/my_vsnprintf.c:248:10

    #3 0x34a9efe in my_vsnprintf_ex /mariadb/10.2o/strings/my_vsnprintf.c:638

    #4 0x34afc93 in my_vsnprintf /mariadb/10.2o/strings/my_vsnprintf.c:704:10

    #5 0x34afc93 in my_snprintf /mariadb/10.2o/strings/my_vsnprintf.c:713

    #6 0x1051873 in Json_writer::add_double(double) /mariadb/10.2o/sql/my_json_writer.cc:164:3

    #7 0xf95548 in Explain_table_access::print_explain_json(Explain_query*, Json_writer*, bool) /mariadb/10.2o/sql/sql_explain.cc:1639:36

    #8 0xf92ce3 in Explain_basic_join::print_explain_json_interns(Explain_query*, Json_writer*, bool) /mariadb/10.2o/sql/sql_explain.cc:1014:19

    #9 0xf91278 in Explain_select::print_explain_json(Explain_query*, Json_writer*, bool) /mariadb/10.2o/sql/sql_explain.cc:913:25

    #10 0xf7ed07 in Explain_query::print_explain_json(select_result_sink*, bool) /mariadb/10.2o/sql/sql_explain.cc:224:11

    #11 0x9fa931 in execute_sqlcom_select(THD*, TABLE_LIST*) /mariadb/10.2o/sql/sql_parse.cc:6177:25

    #12 0x9d175b in mysql_execute_command(THD*) /mariadb/10.2o/sql/sql_parse.cc:3533:12

    #13 0x9c51b0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.2o/sql/sql_parse.cc:7760:18

    #14 0x9b41a5 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.2o/sql/sql_parse.cc:1831:7

    #15 0x9be26d in do_command(THD*) /mariadb/10.2o/sql/sql_parse.cc:1385:17

    #16 0xee57b4 in do_handle_one_connection(CONNECT*) /mariadb/10.2o/sql/sql_connect.cc:1336:11

    #17 0xee4bf9 in handle_one_connection /mariadb/10.2o/sql/sql_connect.cc:1241:3

    #18 0x2fa6408 in pfs_spawn_thread /mariadb/10.2o/storage/perfschema/pfs.cc:1862:3

    #19 0x7fae617edfa2 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x7fa2)

    #20 0x7fae60fcb4ce in clone (/lib/x86_64-linux-gnu/libc.so.6+0xf94ce)

  Uninitialized value was created by an allocation of 'print_arr.i' in the stack frame of function 'my_vsnprintf_ex'

    #0 0x34a8ad0 in my_vsnprintf_ex /mariadb/10.2o/strings/my_vsnprintf.c:559

Failing test(s): wsrep_info.plugin perfschema.hostcache_ipv6_ssl main.ctype_utf8mb4_innodb main.ctype_utf8 main.ctype_utf8mb4 encryption.corrupted_during_recovery main.mysql_client_test main.mysql_client_test_nonblock encryption.innodb-force-corrupt innodb.corrupted_during_recovery innodb.innodb-page_compression_lz4 innodb.innodb-page_compression_lzma innodb.innodb-page_compression_lzo innodb.innodb-page_compression_bzip2 innodb.innodb-page_compression_snappy innodb.leaf_page_corrupted_during_recovery sys_vars.innodb_max_dirty_pages_pct_basic sys_vars.innodb_max_dirty_pages_pct_lwm_basic main.range main.userstat maria.maria-recovery2 main.ssl_7937 main.mysql_client_test_comp main.statistics main.range_mrr_icp main.cte_recursive main.ssl_8k_key main.ssl_timeout-9836 main-test_sql_discovery.plugin innodb.ibuf_not_empty main.analyze_format_json main.ctype_utf8mb4_heap main.ctype_utf8mb4_myisam main.not_embedded_server main.openssl_1 main.plugin main.ssl main.explain_json main.ssl_ca main.func_regexp main.ssl_cipher main.subselect_cache main.func_regexp_pcre main.ssl_compress main.ssl_connect main.ssl_timeout main.analyze_stmt_orderby main.func_test parts.partition_debug main.derived_cond_pushdown main.win perfschema.hostcache_ipv4_ssl main.derived_view innodb.innodb_force_recovery main.explain_json_innodb plugins.auth_ed25519 main.win_empty_over main.innodb_ext_key main.subselect_no_semijoin innodb_gis.rtree_concurrent_srch main.ssl-big rpl.rpl_stop_slave main.mysql_upgrade_ssl main.explain_json_format_partitions main.plugin_innodb

main.sum_distinct-big 'innodb'           [ pass ]  864232

cd /mariadb

sudo apt install libc++-9-dev libc++abi-9-dev

apt source libc++-9-dev

cd llvm-toolchain-9-9.0.1

mkdir libc++msan; cd libc++msan

cmake ../libcxx -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_SANITIZER=Memory -DCMAKE_C_COMPILER=clang-9 -DCMAKE_CXX_COMPILER=clang++-9

make -j$(nproc)

cd /mariadb/10.5

git checkout 7e10e80b8faab51139588a985a684df960ab81b9

mkdir build

cd build

cmake -DCMAKE_{C_COMPILER=clang,CXX_COMPILER=clang++}-9 \

-DCMAKE_C_FLAGS='-O2 -march=native -mtune=native -Wno-unused-command-line-argument -fdebug-macro' \

-DCMAKE_CXX_FLAGS='-O2 -march=native -mtune=native -Wno-unused-command-line-argument -fdebug-macro -stdlib=libc++' \

-DCMAKE_EXPORT_COMPILE_COMMANDS=ON -DCONC_WITH_{UNITTEST,SSL}=OFF \

-DWITH_EMBEDDED_SERVER=OFF -DWITH_UNIT_TESTS=OFF -DCMAKE_BUILD_TYPE=Debug -DPLUGIN_{ARCHIVE,TOKUDB,MROONGA,OQGRAPH,ROCKSDB,CONNECT,SPIDER}=NO -DWITH_SAFEMALLOC=OFF \

-DWITH_{ZLIB,SSL,PCRE}=bundled

-DWITH_MSAN=ON ..

make -j$(nproc)

LD_LIBRARY_PATH=/mariadb/llvm-toolchain-9-9.0.1/libc++msan/lib ./mtr main.1st

diff --git a/sql/mysqld.cc b/sql/mysqld.cc

index b7f7615636b..59bb1081350 100644

--- a/sql/mysqld.cc

+++ b/sql/mysqld.cc

@@ -2158,7 +2158,7 @@ static void set_ports()

       line options.

     */

-#if MYSQL_PORT_DEFAULT == 0

+#if 0 // MYSQL_PORT_DEFAULT == 0

     struct  servent *serv_ptr;

     if ((serv_ptr= getservbyname("mysql", "tcp")))

       SYSVAR_AUTOSIZE(mysqld_port, ntohs((u_short) serv_ptr->s_port));

diff --git a/tpool/aio_linux.cc b/tpool/aio_linux.cc

index 24bc04c75ba..0d657bbe05d 100644

--- a/tpool/aio_linux.cc

+++ b/tpool/aio_linux.cc

@@ -45,6 +45,7 @@ class aio_linux : public aio

   std::thread m_getevent_thread;

   static void getevent_thread_routine(aio_linux* aio)

+  __attribute__((no_sanitize("memory")))

   {

     for (;;)

     {

diff --git a/storage/innobase/ut/ut0crc32.cc b/storage/innobase/ut/ut0crc32.cc

index 4a6447c1dcf..4bb62c61b5c 100644

--- a/storage/innobase/ut/ut0crc32.cc

+++ b/storage/innobase/ut/ut0crc32.cc

@@ -2,7 +2,7 @@

 Copyright (c) 2009, 2010 Facebook, Inc. All Rights Reserved.

 Copyright (c) 2011, 2015, Oracle and/or its affiliates. All Rights Reserved.

-Copyright (c) 2016, 2018, MariaDB Corporation.

+Copyright (c) 2016, 2019, 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

@@ -220,11 +220,7 @@ ut_crc32_8_hw(

 #ifdef _MSC_VER

 	*crc = _mm_crc32_u8(*crc, (*data)[0]);

 #else

-	asm("crc32b %1, %0"

-	    /* output operands */

-	    : "+r" (*crc)

-	    /* input operands */

-	    : "rm" ((*data)[0]));

+	*crc = __builtin_ia32_crc32qi(*crc, (*data)[0]);

 #endif

 	(*data)++;

@@ -241,8 +237,8 @@ ut_crc32_64_low_hw(

 	uint32_t	crc,

 	uint64_t	data)

 {

-	uint64_t	crc_64bit = crc;

 #ifdef _MSC_VER

+	uint64_t	crc_64bit = crc;

 #ifdef _M_X64

 	crc_64bit = _mm_crc32_u64(crc_64bit, data);

 #elif defined(_M_IX86)

@@ -251,15 +247,10 @@ ut_crc32_64_low_hw(

 #else

 #error Not Supported processors type.

 #endif

+	return(static_cast<uint32_t>(crc_64bit));

 #else

-	asm("crc32q %1, %0"

-	    /* output operands */

-	    : "+r" (crc_64bit)

-	    /* input operands */

-	    : "rm" (data));

+	return static_cast<uint32_t>(__builtin_ia32_crc32di(crc, data));

 #endif

-

-	return(static_cast<uint32_t>(crc_64bit));

 }

 /** Calculate CRC32 over 64-bit byte string using a hardware/CPU instruction.

diff --git a/extra/wolfssl/wolfssl/wolfcrypt/src/random.c b/extra/wolfssl/wolfssl/wolfcrypt/src/random.c

--- a/extra/wolfssl/wolfssl/wolfcrypt/src/random.c

+++ b/extra/wolfssl/wolfssl/wolfcrypt/src/random.c

@@ -1286,6 +1286,7 @@ int wc_FreeNetRandom(void)

     /* return 0 on success */

     static WC_INLINE int IntelRDseed64(word64* seed)

+    __attribute__((no_sanitize("memory")))

     {

         unsigned char ok;

diff --git a/libmariadb/libmariadb/mariadb_lib.c b/libmariadb/libmariadb/mariadb_lib.c

--- a/libmariadb/libmariadb/mariadb_lib.c

+++ b/libmariadb/libmariadb/mariadb_lib.c

@@ -3572,12 +3572,9 @@ static void mysql_once_init()

   }

   if (!mysql_port)

   {

-    struct servent *serv_ptr;

     char *env;

     mysql_port = MARIADB_PORT;

-    if ((serv_ptr = getservbyname("mysql", "tcp")))

-      mysql_port = (uint)ntohs((ushort)serv_ptr->s_port);

     if ((env = getenv("MYSQL_TCP_PORT")))

       mysql_port =(uint)atoi(env);

   }

diff --git a/include/my_valgrind.h b/include/my_valgrind.h

index 08ad3f46b96..da76d9ced56 100644

--- a/include/my_valgrind.h

+++ b/include/my_valgrind.h

@@ -46,6 +46,13 @@

 # define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0)

 # define MEM_CHECK_DEFINED(a,len) ((void) 0)

 # define REDZONE_SIZE 8

+#elif 0 /* __has_feature(memory_sanitizer) */

+# include <sanitizer/msan_interface.h>

+# define MEM_UNDEFINED(a,len) __msan_poison(a,len)

+# define MEM_NOACCESS(a,len) ((void) 0)

+# define MEM_CHECK_ADDRESSABLE(a,len) ((void) 0)

+# define MEM_CHECK_DEFINED(a,len) __msan_check_mem_is_initialized(a,len)

+# define REDZONE_SIZE 0

 #else

 # define MEM_UNDEFINED(a,len) ((void) (a), (void) (len))

 # define MEM_NOACCESS(a,len) ((void) 0)

diff --git a/strings/dtoa.c b/strings/dtoa.c

index e31b7e92d7c..b8806185894 100644

--- a/strings/dtoa.c

+++ b/strings/dtoa.c

@@ -2168,6 +2168,7 @@ static int quorem(Bigint *b, Bigint *S)

 static char *dtoa(double dd, int mode, int ndigits, int *decpt, int *sign,

                   char **rve, char *buf, size_t buf_size)

+  __attribute__((no_sanitize("memory")))

 {

   /*

     Arguments ndigits, decpt, sign are similar to those

sudo apt install libc++-10-dev libc++abi-10-dev

cd /mariadb

apt source libc++-10-dev

cd llvm-toolchain-10-10.0.0

mkdir libc++msan

cd libc++msan

cmake ../libcxx -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_SANITIZER=Memory -DCMAKE_C_COMPILER=clang-10 -DCMAKE_CXX_COMPILER=clang++-10

make -j$(nproc)

cd /mariadb/10.5

mkdir build

cd build

cmake -DCMAKE_{C_COMPILER=clang,CXX_COMPILER=clang++}-10 \

-DCMAKE_C_FLAGS='-O2 -march=native -mtune=native -Wno-unused-command-line-argument -fdebug-macro' \

-DCMAKE_CXX_FLAGS='-stdlib=libc++ -O2 -march=native -mtune=native -Wno-unused-command-line-argument -fdebug-macro'  \

-DWITH_EMBEDDED_SERVER=OFF -DWITH_UNIT_TESTS=OFF -DCMAKE_BUILD_TYPE=Debug \

-DWITH_INNODB_{BZIP2,LZ4,LZMA,LZO,SNAPPY}=OFF \

-DPLUGIN_{ARCHIVE,TOKUDB,MROONGA,OQGRAPH,ROCKSDB,CONNECT,SPIDER}=NO -DWITH_SAFEMALLOC=OFF \

-DWITH_{ZLIB,SSL,PCRE}=bundled \

-DHAVE_LIBAIO_H=0 \

-DWITH_MSAN=ON \

-G Ninja ..

ninja

cd mysql-test

LD_LIBRARY_PATH=/mariadb/llvm-toolchain-10-10.0.0/libc++msan/lib ./mtr main.1st

LD_LIBRARY_PATH=/mariadb/llvm-toolchain-10-10.0.0/libc++msan/lib MSAN_OPTIONS=abort_on_error=1 ./mtr --big-test --parallel=auto --force --retry=0

main.flush_ssl

main.mysql_client_test

main.mysql_client_test_comp

main.mysql_client_test_nonblock

main.mysql_upgrade_ssl

main.openssl_1

main.ssl

main.ssl-big

main.ssl_7937

main.ssl_8k_key

main.ssl_ca

main.ssl_cipher

main.ssl_compress

main.ssl_connect

main.ssl_timeout

main.ssl_timeout-9836

main.tls_version

main.tls_version1

main.userstat

perfschema.connection_type_notwin

perfschema.hostcache_ipv4_ssl

perfschema.hostcache_ipv6_ssl

plugins.auth_ed25519

plugins.multiauth

CURRENT_TEST: perfschema.transaction_nested_events

mysqltest: At line 50: query 'SET @con1_thread_id= $con1_thread_id' failed: 1064: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '' at line 1

CURRENT_TEST: gcol.gcol_ins_upd_myisam

mysqltest: In included file "./suite/gcol/inc/gcol_ins_upd.inc": 

included from /mariadb/10.5m/mysql-test/suite/gcol/t/gcol_ins_upd_myisam.test at line 40:

At line 491: query 'CREATE TABLE t (

a BLOB GENERATED ALWAYS AS ('') VIRTUAL,

b TIMESTAMP(4) GENERATED ALWAYS AS ('') VIRTUAL,

KEY (a(183),b)

)' failed with wrong errno 2013: 'Lost connection to MySQL server during query', instead of 1901...

…

==2534796==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x55bba587f452 in Binary_string::c_ptr() /mariadb/10.5m/sql/sql_string.h:606:9

    #1 0x55bba587f452 in Field::error_generated_column_function_is_not_allowed(THD*, bool) const /mariadb/10.5m/sql/field.cc:1458:16

    #2 0x55bba587fa20 in Field::check_vcol_sql_mode_dependency(THD*, vcol_init_mode) const /mariadb/10.5m/sql/field.cc:1481:7

    #3 0x55bba5209635 in parse_vcol_defs(THD*, st_mem_root*, TABLE*, bool*, vcol_init_mode) /mariadb/10.5m/sql/table.cc:1203:33

    #4 0x55bba521908c in open_table_from_share(THD*, TABLE_SHARE*, st_mysql_const_lex_string const*, unsigned int, unsigned int, unsigned int, TABLE*, bool, List<String>*) /mariadb/10.5m/sql/table.cc:3975:9

    #5 0x55bba5a01f89 in ha_create_table(THD*, char const*, char const*, char const*, HA_CREATE_INFO*, st_mysql_const_unsigned_lex_string*) /mariadb/10.5m/sql/handler.cc:5358:7

    #6 0x55bba50f09ec in create_table_impl(THD*, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, char const*, DDL_options_st, HA_CREATE_INFO*, Alter_info*, int, bool*, st_key**, unsigned int*, st_mysql_const_unsigned_lex_string*) /mariadb/10.5m/sql/sql_table.cc:5139:11

    #7 0x55bba50edc0a in mysql_create_table_no_lock(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, Alter_info*, bool*, int, TABLE_LIST*) /mariadb/10.5m/sql/sql_table.cc:5223:8

    #8 0x55bba50f2ab8 in mysql_create_table(THD*, TABLE_LIST*, Table_specification_st*, Alter_info*) /mariadb/10.5m/sql/sql_table.cc:5315:7

    #9 0x55bba51469de in Sql_cmd_create_table_like::execute(THD*) /mariadb/10.5m/sql/sql_table.cc:11763:12

    #10 0x55bba4d6a039 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:5908:26

    #11 0x55bba4d574c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #12 0x55bba4d4b8b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #13 0x55bba4d5928c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #14 0x55bba535bf0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #15 0x55bba535b4e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #16 0x55bba67cc1e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #17 0x7f91ac7daf26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #18 0x7f91ac2b42ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'tmp' in the stack frame of function '_ZNK5Field46error_generated_column_function_is_not_allowedEP3THDb'

    #0 0x55bba587eaf0 in Field::error_generated_column_function_is_not_allowed(THD*, bool) const /mariadb/10.5m/sql/field.cc:1450

CURRENT_TEST: vcol.vcol_sql_mode

mysqltest: At line 148: query 'CREATE TABLE t1 (a CHAR(5), v VARCHAR(5) AS (RPAD(a,4,' ')) VIRTUAL, KEY(v))' failed with wrong errno 2013: 'Lost connection to MySQL server during query', instead of 1901...

…

==2534810==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x562d223d8452 in Binary_string::c_ptr() /mariadb/10.5m/sql/sql_string.h:606:9

    #1 0x562d223d8452 in Field::error_generated_column_function_is_not_allowed(THD*, bool) const /mariadb/10.5m/sql/field.cc:1458:16

    #2 0x562d223d8a20 in Field::check_vcol_sql_mode_dependency(THD*, vcol_init_mode) const /mariadb/10.5m/sql/field.cc:1481:7

    #3 0x562d21d62635 in parse_vcol_defs(THD*, st_mem_root*, TABLE*, bool*, vcol_init_mode) /mariadb/10.5m/sql/table.cc:1203:33

    #4 0x562d21d7208c in open_table_from_share(THD*, TABLE_SHARE*, st_mysql_const_lex_string const*, unsigned int, unsigned int, unsigned int, TABLE*, bool, List<String>*) /mariadb/10.5m/sql/table.cc:3975:9

    #5 0x562d2255af89 in ha_create_table(THD*, char const*, char const*, char const*, HA_CREATE_INFO*, st_mysql_const_unsigned_lex_string*) /mariadb/10.5m/sql/handler.cc:5358:7

    #6 0x562d21c499ec in create_table_impl(THD*, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, char const*, DDL_options_st, HA_CREATE_INFO*, Alter_info*, int, bool*, st_key**, unsigned int*, st_mysql_const_unsigned_lex_string*) /mariadb/10.5m/sql/sql_table.cc:5139:11

    #7 0x562d21c46c0a in mysql_create_table_no_lock(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, Alter_info*, bool*, int, TABLE_LIST*) /mariadb/10.5m/sql/sql_table.cc:5223:8

    #8 0x562d21c4bab8 in mysql_create_table(THD*, TABLE_LIST*, Table_specification_st*, Alter_info*) /mariadb/10.5m/sql/sql_table.cc:5315:7

    #9 0x562d21c9f9de in Sql_cmd_create_table_like::execute(THD*) /mariadb/10.5m/sql/sql_table.cc:11763:12

    #10 0x562d218c3039 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:5908:26

    #11 0x562d218b04c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #12 0x562d218a48b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #13 0x562d218b228c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #14 0x562d21eb4f0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #15 0x562d21eb44e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #16 0x562d233251e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #17 0x7f1af3f0df26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #18 0x7f1af39e72ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'tmp' in the stack frame of function '_ZNK5Field46error_generated_column_function_is_not_allowedEP3THDb'

    #0 0x562d223d7af0 in Field::error_generated_column_function_is_not_allowed(THD*, bool) const /mariadb/10.5m/sql/field.cc:1450

CURRENT_TEST: vcol.vcol_sql_mode_datetime

mysqltest: At line 67: query 'CREATE TABLE t1 (

t DATETIME(4),

d DATETIME,

v DATETIME(3) AS ('2001-01-01 10:20:30.1234') VIRTUAL,

KEY(v,d)

)' failed with wrong errno 2013: 'Lost connection to MySQL server during query', instead of 1901...

==2534813==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x557714701452 in Binary_string::c_ptr() /mariadb/10.5m/sql/sql_string.h:606:9

    #1 0x557714701452 in Field::error_generated_column_function_is_not_allowed(THD*, bool) const /mariadb/10.5m/sql/field.cc:1458:16

    #2 0x557714701a20 in Field::check_vcol_sql_mode_dependency(THD*, vcol_init_mode) const /mariadb/10.5m/sql/field.cc:1481:7

    #3 0x55771408b635 in parse_vcol_defs(THD*, st_mem_root*, TABLE*, bool*, vcol_init_mode) /mariadb/10.5m/sql/table.cc:1203:33

    #4 0x55771409b08c in open_table_from_share(THD*, TABLE_SHARE*, st_mysql_const_lex_string const*, unsigned int, unsigned int, unsigned int, TABLE*, bool, List<String>*) /mariadb/10.5m/sql/table.cc:3975:9

    #5 0x557714883f89 in ha_create_table(THD*, char const*, char const*, char const*, HA_CREATE_INFO*, st_mysql_const_unsigned_lex_string*) /mariadb/10.5m/sql/handler.cc:5358:7

    #6 0x557713f729ec in create_table_impl(THD*, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, char const*, DDL_options_st, HA_CREATE_INFO*, Alter_info*, int, bool*, st_key**, unsigned int*, st_mysql_const_unsigned_lex_string*) /mariadb/10.5m/sql/sql_table.cc:5139:11

    #7 0x557713f6fc0a in mysql_create_table_no_lock(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, Alter_info*, bool*, int, TABLE_LIST*) /mariadb/10.5m/sql/sql_table.cc:5223:8

    #8 0x557713f74ab8 in mysql_create_table(THD*, TABLE_LIST*, Table_specification_st*, Alter_info*) /mariadb/10.5m/sql/sql_table.cc:5315:7

    #9 0x557713fc89de in Sql_cmd_create_table_like::execute(THD*) /mariadb/10.5m/sql/sql_table.cc:11763:12

    #10 0x557713bec039 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:5908:26

    #11 0x557713bd94c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #12 0x557713bcd8b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #13 0x557713bdb28c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #14 0x5577141ddf0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #15 0x5577141dd4e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #16 0x55771564e1e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #17 0x7feb3233ef26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #18 0x7feb31e182ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'tmp' in the stack frame of function '_ZNK5Field46error_generated_column_function_is_not_allowedEP3THDb'

    #0 0x557714700af0 in Field::error_generated_column_function_is_not_allowed(THD*, bool) const /mariadb/10.5m/sql/field.cc:1450

CURRENT_TEST: vcol.vcol_sql_mode_time

mysqltest: At line 67: query 'CREATE TABLE t1 (

t TIME(4),

d TIME,

v TIME(3) AS ('2001-01-01 10:20:30.1234') VIRTUAL,

KEY(v,d)

)' failed with wrong errno 2013: 'Lost connection to MySQL server during query', instead of 1901...

…

==2534817==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x564a3b8e0452 in Binary_string::c_ptr() /mariadb/10.5m/sql/sql_string.h:606:9

    #1 0x564a3b8e0452 in Field::error_generated_column_function_is_not_allowed(THD*, bool) const /mariadb/10.5m/sql/field.cc:1458:16

    #2 0x564a3b8e0a20 in Field::check_vcol_sql_mode_dependency(THD*, vcol_init_mode) const /mariadb/10.5m/sql/field.cc:1481:7

    #3 0x564a3b26a635 in parse_vcol_defs(THD*, st_mem_root*, TABLE*, bool*, vcol_init_mode) /mariadb/10.5m/sql/table.cc:1203:33

    #4 0x564a3b27a08c in open_table_from_share(THD*, TABLE_SHARE*, st_mysql_const_lex_string const*, unsigned int, unsigned int, unsigned int, TABLE*, bool, List<String>*) /mariadb/10.5m/sql/table.cc:3975:9

    #5 0x564a3ba62f89 in ha_create_table(THD*, char const*, char const*, char const*, HA_CREATE_INFO*, st_mysql_const_unsigned_lex_string*) /mariadb/10.5m/sql/handler.cc:5358:7

    #6 0x564a3b1519ec in create_table_impl(THD*, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, char const*, DDL_options_st, HA_CREATE_INFO*, Alter_info*, int, bool*, st_key**, unsigned int*, st_mysql_const_unsigned_lex_string*) /mariadb/10.5m/sql/sql_table.cc:5139:11

    #7 0x564a3b14ec0a in mysql_create_table_no_lock(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, Alter_info*, bool*, int, TABLE_LIST*) /mariadb/10.5m/sql/sql_table.cc:5223:8

    #8 0x564a3b153ab8 in mysql_create_table(THD*, TABLE_LIST*, Table_specification_st*, Alter_info*) /mariadb/10.5m/sql/sql_table.cc:5315:7

    #9 0x564a3b1a79de in Sql_cmd_create_table_like::execute(THD*) /mariadb/10.5m/sql/sql_table.cc:11763:12

    #10 0x564a3adcb039 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:5908:26

    #11 0x564a3adb84c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #12 0x564a3adac8b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #13 0x564a3adba28c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #14 0x564a3b3bcf0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #15 0x564a3b3bc4e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #16 0x564a3c82d1e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #17 0x7f8d50222f26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #18 0x7f8d4fcfc2ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'tmp' in the stack frame of function '_ZNK5Field46error_generated_column_function_is_not_allowedEP3THDb'

    #0 0x564a3b8dfaf0 in Field::error_generated_column_function_is_not_allowed(THD*, bool) const /mariadb/10.5m/sql/field.cc:1450

CURRENT_TEST: vcol.vcol_sql_mode_timestamp

mysqltest: At line 67: query 'CREATE TABLE t1 (

t TIMESTAMP(4),

d DATETIME,

v TIMESTAMP(3) AS ('2001-01-01 10:20:30.1234') VIRTUAL,

KEY(v,d)

)' failed with wrong errno 2013: 'Lost connection to MySQL server during query', instead of 1901...

…

==2534819==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x55f6cdc2d452 in Binary_string::c_ptr() /mariadb/10.5m/sql/sql_string.h:606:9

    #1 0x55f6cdc2d452 in Field::error_generated_column_function_is_not_allowed(THD*, bool) const /mariadb/10.5m/sql/field.cc:1458:16

    #2 0x55f6cdc2da20 in Field::check_vcol_sql_mode_dependency(THD*, vcol_init_mode) const /mariadb/10.5m/sql/field.cc:1481:7

    #3 0x55f6cd5b7635 in parse_vcol_defs(THD*, st_mem_root*, TABLE*, bool*, vcol_init_mode) /mariadb/10.5m/sql/table.cc:1203:33

    #4 0x55f6cd5c708c in open_table_from_share(THD*, TABLE_SHARE*, st_mysql_const_lex_string const*, unsigned int, unsigned int, unsigned int, TABLE*, bool, List<String>*) /mariadb/10.5m/sql/table.cc:3975:9

    #5 0x55f6cddaff89 in ha_create_table(THD*, char const*, char const*, char const*, HA_CREATE_INFO*, st_mysql_const_unsigned_lex_string*) /mariadb/10.5m/sql/handler.cc:5358:7

    #6 0x55f6cd49e9ec in create_table_impl(THD*, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, st_mysql_const_lex_string const&, char const*, DDL_options_st, HA_CREATE_INFO*, Alter_info*, int, bool*, st_key**, unsigned int*, st_mysql_const_unsigned_lex_string*) /mariadb/10.5m/sql/sql_table.cc:5139:11

    #7 0x55f6cd49bc0a in mysql_create_table_no_lock(THD*, st_mysql_const_lex_string const*, st_mysql_const_lex_string const*, Table_specification_st*, Alter_info*, bool*, int, TABLE_LIST*) /mariadb/10.5m/sql/sql_table.cc:5223:8

    #8 0x55f6cd4a0ab8 in mysql_create_table(THD*, TABLE_LIST*, Table_specification_st*, Alter_info*) /mariadb/10.5m/sql/sql_table.cc:5315:7

    #9 0x55f6cd4f49de in Sql_cmd_create_table_like::execute(THD*) /mariadb/10.5m/sql/sql_table.cc:11763:12

    #10 0x55f6cd118039 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:5908:26

    #11 0x55f6cd1054c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #12 0x55f6cd0f98b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #13 0x55f6cd10728c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #14 0x55f6cd709f0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #15 0x55f6cd7094e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #16 0x55f6ceb7a1e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #17 0x7f1c9332ff26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #18 0x7f1c92e092ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'tmp' in the stack frame of function '_ZNK5Field46error_generated_column_function_is_not_allowedEP3THDb'

    #0 0x55f6cdc2caf0 in Field::error_generated_column_function_is_not_allowed(THD*, bool) const /mariadb/10.5m/sql/field.cc:1450

CURRENT_TEST: main.opt_trace_index_merge_innodb

mysqltest: At line 35: query 'explain select * from t1 where pk1 != 0  and key1 = 1' failed: 2013: Lost connection to MySQL server during query

…

==2534795==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x561d8a810491 in my_gcvt /mariadb/10.5m/strings/dtoa.c:294:19

    #1 0x561d8a8215f3 in process_dbl_arg /mariadb/10.5m/strings/my_vsnprintf.c:248:10

    #2 0x561d8a8215f3 in my_vsnprintf_ex /mariadb/10.5m/strings/my_vsnprintf.c:638:11

    #3 0x561d8a8275b3 in my_vsnprintf /mariadb/10.5m/strings/my_vsnprintf.c:704:10

    #4 0x561d8a8275b3 in my_snprintf /mariadb/10.5m/strings/my_vsnprintf.c:713:11

    #5 0x561d87de3209 in Json_writer::add_double(double) /mariadb/10.5m/sql/my_json_writer.cc:185:15

    #6 0x561d889bd34a in Json_value_helper::add_double(double) /mariadb/10.5m/sql/my_json_writer.h:288:15

    #7 0x561d889bd34a in Json_writer_object::add(char const*, double) /mariadb/10.5m/sql/my_json_writer.h:406:15

    #8 0x561d889bd34a in ror_intersect_add(ROR_INTERSECT_INFO*, st_ror_scan_info*, Json_writer_object*, bool) /mariadb/10.5m/sql/opt_range.cc:6860:18

    #9 0x561d8894d312 in get_best_ror_intersect(PARAM const*, SEL_TREE*, double, bool*) /mariadb/10.5m/sql/opt_range.cc:7056:10

    #10 0x561d8892e0e0 in SQL_SELECT::test_quick_select(THD*, Bitmap<64u>, unsigned long long, unsigned long long, bool, bool, bool, bool) /mariadb/10.5m/sql/opt_range.cc:2918:24

    #11 0x561d877963b3 in get_quick_record_count(THD*, SQL_SELECT*, TABLE*, Bitmap<64u> const*, unsigned long long) /mariadb/10.5m/sql/sql_select.cc:4708:9

    #12 0x561d877963b3 in make_join_statistics(JOIN*, List<TABLE_LIST>&, st_dynamic_array*) /mariadb/10.5m/sql/sql_select.cc:5433:20

    #13 0x561d877791ba in JOIN::optimize_inner() /mariadb/10.5m/sql/sql_select.cc:2260:7

    #14 0x561d8775babc in JOIN::optimize() /mariadb/10.5m/sql/sql_select.cc:1606:10

    #15 0x561d8773c875 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /mariadb/10.5m/sql/sql_select.cc:4650:19

    #16 0x561d87888bfd in mysql_explain_union(THD*, st_select_lex_unit*, select_result*) /mariadb/10.5m/sql/sql_select.cc:27182:10

    #17 0x561d87674272 in execute_sqlcom_select(THD*, TABLE_LIST*) /mariadb/10.5m/sql/sql_parse.cc:6107:12

    #18 0x561d876532a4 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:3901:12

    #19 0x561d876404c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #20 0x561d876348b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #21 0x561d8764228c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #22 0x561d87c44f0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #23 0x561d87c444e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #24 0x561d890b51e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #25 0x7eff33cfcf26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #26 0x7eff337d62ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'path2' in the stack frame of function '_ZL32btr_estimate_n_rows_in_range_lowP12dict_index_tP9btr_pos_tS2_j'

    #0 0x561d89e147d0 in btr_estimate_n_rows_in_range_low(dict_index_t*, btr_pos_t*, btr_pos_t*, unsigned int) /mariadb/10.5m/storage/innobase/btr/btr0cur.cc:6155

main.query_cache_innodb 'innodb'         w17 [ fail ]

        Test ended at 2020-03-27 13:08:14

CURRENT_TEST: main.query_cache_innodb

mysqltest: At line 43: query 'select * from `t2$ї`' failed: 2013: Lost connection to MySQL server during query

Uninitialized bytes in MemcmpInterceptorCommon at offset 16 inside [0x7fd86874df00, 20)

==2534781==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x5643550aaa2c in bcmp (/dev/shm/10.5ms/sql/mariadbd+0x6dea2c)

    #1 0x564357fe712b in dict_table_t* dict_acquire_mdl_shared<false>(dict_table_t*, THD*, MDL_ticket**, dict_table_op_t) /mariadb/10.5m/storage/innobase/dict/dict0dict.cc:892:10

    #2 0x564357f93e40 in dict_table_open_on_id(unsigned long, bool, dict_table_op_t, THD*, MDL_ticket**) /mariadb/10.5m/storage/innobase/dict/dict0dict.cc:947:12

    #3 0x5643579a120b in row_purge_parse_undo_rec(purge_node_t*, unsigned char*, que_thr_t*, bool*) /mariadb/10.5m/storage/innobase/row/row0purge.cc:933:16

    #4 0x5643579a120b in row_purge(purge_node_t*, unsigned char*, que_thr_t*) /mariadb/10.5m/storage/innobase/row/row0purge.cc:1107:10

    #5 0x5643579a120b in row_purge_step(que_thr_t*) /mariadb/10.5m/storage/innobase/row/row0purge.cc:1159:3

    #6 0x564357771370 in que_thr_step(que_thr_t*) /mariadb/10.5m/storage/innobase/que/que0que.cc:1038:9

    #7 0x564357771370 in que_run_threads_low(que_thr_t*) /mariadb/10.5m/storage/innobase/que/que0que.cc:1100:14

    #8 0x564357771370 in que_run_threads(que_thr_t*) /mariadb/10.5m/storage/innobase/que/que0que.cc:1140:2

    #9 0x564357ac4043 in srv_task_execute() /mariadb/10.5m/storage/innobase/srv/srv0srv.cc:2055:3

    #10 0x564357ac4043 in purge_worker_callback(void*) /mariadb/10.5m/storage/innobase/srv/srv0srv.cc:2205:10

    #11 0x564358355413 in tpool::task_group::execute(tpool::task*) /mariadb/10.5m/tpool/task_group.cc:55:9

    #12 0x564358348d72 in tpool::thread_pool_generic::worker_main(tpool::worker_data*) /mariadb/10.5m/tpool/tpool_generic.cc:518:11

    #13 0x5643583527bc in decltype(*(std::__1::forward<tpool::thread_pool_generic*>(fp0)).*fp(std::__1::forward<tpool::worker_data*>(fp1))) std::__1::__invoke<void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*, void>(void (tpool::thread_pool_generic::*&&)(tpool::worker_data*), tpool::thread_pool_generic*&&, tpool::worker_data*&&) /usr/lib/llvm-10/bin/../include/c++/v1/type_traits:3480:1

    #14 0x5643583527bc in void std::__1::__thread_execute<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*, 2ul, 3ul>(std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*>&, std::__1::__tuple_indices<2ul, 3ul>) /usr/lib/llvm-10/bin/../include/c++/v1/thread:273:5

    #15 0x5643583527bc in void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*> >(void*) /usr/lib/llvm-10/bin/../include/c++/v1/thread:284:5

    #16 0x7fd88272bf26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #17 0x7fd8822052ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'db_buf' in the stack frame of function '_Z23dict_acquire_mdl_sharedILb0EEP12dict_table_tS1_P3THDPP10MDL_ticket15dict_table_op_t'

    #0 0x564357fe6200 in dict_table_t* dict_acquire_mdl_shared<false>(dict_table_t*, THD*, MDL_ticket**, dict_table_op_t) /mariadb/10.5m/storage/innobase/dict/dict0dict.cc:790

CURRENT_TEST: maria.maria-recovery2

mysqltest: At line 70: query 'delete from t1 where b="b"' failed: 2013: Lost connection to MySQL server during query

…

SQL_SELECT::test_quick_select: enter: keys_to_use: 18446744073709551615  prev_tables: 0  const_tables: 0

SQL_SELECT::test_quick_select: info: records: 3

SQL_SELECT::test_quick_select: info: ==2536175==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x555eb4ba0491 in my_gcvt /mariadb/10.5m/strings/dtoa.c:294:19

    #1 0x555eb4bb15f3 in process_dbl_arg /mariadb/10.5m/strings/my_vsnprintf.c:248:10

    #2 0x555eb4bb15f3 in my_vsnprintf_ex /mariadb/10.5m/strings/my_vsnprintf.c:638:11

    #3 0x555eb4a8bf67 in DbugVfprintf /mariadb/10.5m/dbug/dbug.c:1332:10

    #4 0x555eb4a8bf67 in _db_doprnt_ /mariadb/10.5m/dbug/dbug.c:1316:3

    #5 0x555eb2cb8cfe in SQL_SELECT::test_quick_select(THD*, Bitmap<64u>, unsigned long long, unsigned long long, bool, bool, bool, bool) /mariadb/10.5m/sql/opt_range.cc:2691:3

    #6 0x555eb2e000a3 in SQL_SELECT::check_quick(THD*, bool, unsigned long long) /mariadb/10.5m/sql/opt_range.h:1654:12

    #7 0x555eb2e000a3 in mysql_delete(THD*, TABLE_LIST*, Item*, SQL_I_List<st_order>*, unsigned long long, unsigned long long, select_result*) /mariadb/10.5m/sql/sql_delete.cc:500:26

    #8 0x555eb19f6bc6 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:4749:11

    #9 0x555eb19d04c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #10 0x555eb19c48b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #11 0x555eb19d228c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #12 0x555eb1fd4f0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #13 0x555eb1fd44e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #14 0x555eb34451e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #15 0x7f2ef5861f26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #16 0x7f2ef533b2ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'buf' in the stack frame of function 'my_fcvt'

    #0 0x555eb4b9c320 in my_fcvt /mariadb/10.5m/strings/dtoa.c:90

CURRENT_TEST: sys_vars.replicate_ignore_table_grant

mysqltest: In included file "./suite/sys_vars/inc/sysvar_global_grant.inc": 

included from /mariadb/10.5m/mysql-test/suite/sys_vars/t/replicate_ignore_table_grant.test at line 10:

At line 29: query 'SET GLOBAL $var=$value' failed: 2013: Lost connection to MySQL server during query

…

==2534804==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x555a8deddec2 in Rpl_filter::set_ignore_table(char const*) /mariadb/10.5m/sql/rpl_filter.cc:377:7

    #1 0x555a8e9a2b82 in Sys_var_rpl_filter::set_filter_value(char const*, Master_info*) /mariadb/10.5m/sql/sys_vars.cc:5245:25

    #2 0x555a8e9a25e5 in Sys_var_rpl_filter::global_update(THD*, set_var*) /mariadb/10.5m/sql/sys_vars.cc:5218:15

    #3 0x555a8def1f9b in sys_var::update(THD*, set_var*) /mariadb/10.5m/sql/set_var.cc:207:12

    #4 0x555a8defa003 in set_var::update(THD*) /mariadb/10.5m/sql/set_var.cc:859:23

    #5 0x555a8def8993 in sql_set_variables(THD*, List<set_var_base>*, bool) /mariadb/10.5m/sql/set_var.cc:746:20

    #6 0x555a8e3438f0 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:4976:9

    #7 0x555a8e32b4c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #8 0x555a8e31f8b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #9 0x555a8e32d28c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #10 0x555a8e92ff0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #11 0x555a8e92f4e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #12 0x555a8fda01e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #13 0x7f6e8e862f26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #14 0x7f6e8e33c2ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by a heap allocation

    #0 0x555a8de5e759 in operator new(unsigned long) (/dev/shm/10.5ms/sql/mariadbd+0x747759)

    #1 0x555a8dea2f95 in create_rpl_filter(char const*, unsigned long) /mariadb/10.5m/sql/keycaches.cc:203:11

CURRENT_TEST: main.opt_trace

mysqltest: At line 23: query 'select * from v1' failed: 2013: Lost connection to MySQL server during query

…

==2534807==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x55e75ddbf491 in my_gcvt /mariadb/10.5m/strings/dtoa.c:294:19

    #1 0x55e75ddd05f3 in process_dbl_arg /mariadb/10.5m/strings/my_vsnprintf.c:248:10

    #2 0x55e75ddd05f3 in my_vsnprintf_ex /mariadb/10.5m/strings/my_vsnprintf.c:638:11

    #3 0x55e75ddd65b3 in my_vsnprintf /mariadb/10.5m/strings/my_vsnprintf.c:704:10

    #4 0x55e75ddd65b3 in my_snprintf /mariadb/10.5m/strings/my_vsnprintf.c:713:11

    #5 0x55e75b392209 in Json_writer::add_double(double) /mariadb/10.5m/sql/my_json_writer.cc:185:15

    #6 0x55e75adafb01 in Json_value_helper::add_double(double) /mariadb/10.5m/sql/my_json_writer.h:288:15

    #7 0x55e75adafb01 in Json_writer_object::add(char const*, double) /mariadb/10.5m/sql/my_json_writer.h:406:15

    #8 0x55e75adafb01 in best_access_path(JOIN*, st_join_table*, unsigned long long, st_position const*, unsigned int, bool, double, st_position*, st_position*) /mariadb/10.5m/sql/sql_select.cc:8044:23

    #9 0x55e75ae589fb in best_extension_by_limited_search(JOIN*, unsigned long long, unsigned int, double, double, unsigned int, unsigned int, unsigned int) /mariadb/10.5m/sql/sql_select.cc:9533:7

    #10 0x55e75adb72cc in greedy_search(JOIN*, unsigned long long, unsigned int, unsigned int, unsigned int) /mariadb/10.5m/sql/sql_select.cc:8738:9

    #11 0x55e75adb72cc in choose_plan(JOIN*, unsigned long long) /mariadb/10.5m/sql/sql_select.cc:8303:9

    #12 0x55e75ad471be in make_join_statistics(JOIN*, List<TABLE_LIST>&, st_dynamic_array*) /mariadb/10.5m/sql/sql_select.cc:5550:11

    #13 0x55e75ad281ba in JOIN::optimize_inner() /mariadb/10.5m/sql/sql_select.cc:2260:7

    #14 0x55e75ad0aabc in JOIN::optimize() /mariadb/10.5m/sql/sql_select.cc:1606:10

    #15 0x55e75aceb875 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /mariadb/10.5m/sql/sql_select.cc:4650:19

    #16 0x55e75aceaf48 in handle_select(THD*, LEX*, select_result*, unsigned long) /mariadb/10.5m/sql/sql_select.cc:417:10

    #17 0x55e75ac23dd2 in execute_sqlcom_select(THD*, TABLE_LIST*) /mariadb/10.5m/sql/sql_parse.cc:6168:12

    #18 0x55e75ac022a4 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:3901:12

    #19 0x55e75abef4c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #20 0x55e75abe38b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #21 0x55e75abf128c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #22 0x55e75b1f3f0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #23 0x55e75b1f34e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #24 0x55e75c6641e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #25 0x7fde0e7f7f26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #26 0x7fde0e2d12ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'stack' in the stack frame of function 'my_qsort2'

    #0 0x55e75db96be0 in my_qsort2 /mariadb/10.5m/mysys/mf_qsort.c:100

CURRENT_TEST: main.opt_trace_index_merge

mysqltest: At line 17: query 'explain select * from t1 where a=1 or b=1' failed: 2013: Lost connection to MySQL server during query

…

==2534800==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x5576d953f576 in my_gcvt /mariadb/10.5m/strings/dtoa.c:267:31

    #1 0x5576d95505f3 in process_dbl_arg /mariadb/10.5m/strings/my_vsnprintf.c:248:10

    #2 0x5576d95505f3 in my_vsnprintf_ex /mariadb/10.5m/strings/my_vsnprintf.c:638:11

    #3 0x5576d95565b3 in my_vsnprintf /mariadb/10.5m/strings/my_vsnprintf.c:704:10

    #4 0x5576d95565b3 in my_snprintf /mariadb/10.5m/strings/my_vsnprintf.c:713:11

    #5 0x5576d6b12209 in Json_writer::add_double(double) /mariadb/10.5m/sql/my_json_writer.cc:185:15

    #6 0x5576d7681ad1 in Json_value_helper::add_double(double) /mariadb/10.5m/sql/my_json_writer.h:288:15

    #7 0x5576d7681ad1 in Json_writer_object::add(char const*, double) /mariadb/10.5m/sql/my_json_writer.h:406:15

    #8 0x5576d7681ad1 in get_best_disjunct_quick(PARAM*, SEL_IMERGE*, double) /mariadb/10.5m/sql/opt_range.cc:5123:15

    #9 0x5576d765f373 in SQL_SELECT::test_quick_select(THD*, Bitmap<64u>, unsigned long long, unsigned long long, bool, bool, bool, bool) /mariadb/10.5m/sql/opt_range.cc:2966:25

    #10 0x5576d64c53b3 in get_quick_record_count(THD*, SQL_SELECT*, TABLE*, Bitmap<64u> const*, unsigned long long) /mariadb/10.5m/sql/sql_select.cc:4708:9

    #11 0x5576d64c53b3 in make_join_statistics(JOIN*, List<TABLE_LIST>&, st_dynamic_array*) /mariadb/10.5m/sql/sql_select.cc:5433:20

    #12 0x5576d64a81ba in JOIN::optimize_inner() /mariadb/10.5m/sql/sql_select.cc:2260:7

    #13 0x5576d648aabc in JOIN::optimize() /mariadb/10.5m/sql/sql_select.cc:1606:10

    #14 0x5576d646b875 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /mariadb/10.5m/sql/sql_select.cc:4650:19

    #15 0x5576d65b7bfd in mysql_explain_union(THD*, st_select_lex_unit*, select_result*) /mariadb/10.5m/sql/sql_select.cc:27182:10

    #16 0x5576d63a3272 in execute_sqlcom_select(THD*, TABLE_LIST*) /mariadb/10.5m/sql/sql_parse.cc:6107:12

    #17 0x5576d63822a4 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:3901:12

    #18 0x5576d636f4c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #19 0x5576d63638b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #20 0x5576d637128c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #21 0x5576d6973f0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #22 0x5576d69734e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #23 0x5576d7de41e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #24 0x7f7de495cf26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #25 0x7f7de44362ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'seq.i' in the stack frame of function '_ZL20get_key_scans_paramsP5PARAMP8SEL_TREEbbd'

    #0 0x5576d7674c40 in get_key_scans_params(PARAM*, SEL_TREE*, bool, bool, double) /mariadb/10.5m/sql/opt_range.cc:7350

CURRENT_TEST: main.opt_trace_security

mysqltest: At line 33: query 'select * from db1.t1' failed: 2013: Lost connection to MySQL server during query

…

==2534801==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x562cf8099491 in my_gcvt /mariadb/10.5m/strings/dtoa.c:294:19

    #1 0x562cf80aa5f3 in process_dbl_arg /mariadb/10.5m/strings/my_vsnprintf.c:248:10

    #2 0x562cf80aa5f3 in my_vsnprintf_ex /mariadb/10.5m/strings/my_vsnprintf.c:638:11

    #3 0x562cf80b05b3 in my_vsnprintf /mariadb/10.5m/strings/my_vsnprintf.c:704:10

    #4 0x562cf80b05b3 in my_snprintf /mariadb/10.5m/strings/my_vsnprintf.c:713:11

    #5 0x562cf566c209 in Json_writer::add_double(double) /mariadb/10.5m/sql/my_json_writer.cc:185:15

    #6 0x562cf5089b01 in Json_value_helper::add_double(double) /mariadb/10.5m/sql/my_json_writer.h:288:15

    #7 0x562cf5089b01 in Json_writer_object::add(char const*, double) /mariadb/10.5m/sql/my_json_writer.h:406:15

    #8 0x562cf5089b01 in best_access_path(JOIN*, st_join_table*, unsigned long long, st_position const*, unsigned int, bool, double, st_position*, st_position*) /mariadb/10.5m/sql/sql_select.cc:8044:23

    #9 0x562cf51329fb in best_extension_by_limited_search(JOIN*, unsigned long long, unsigned int, double, double, unsigned int, unsigned int, unsigned int) /mariadb/10.5m/sql/sql_select.cc:9533:7

    #10 0x562cf50912cc in greedy_search(JOIN*, unsigned long long, unsigned int, unsigned int, unsigned int) /mariadb/10.5m/sql/sql_select.cc:8738:9

    #11 0x562cf50912cc in choose_plan(JOIN*, unsigned long long) /mariadb/10.5m/sql/sql_select.cc:8303:9

    #12 0x562cf50211be in make_join_statistics(JOIN*, List<TABLE_LIST>&, st_dynamic_array*) /mariadb/10.5m/sql/sql_select.cc:5550:11

    #13 0x562cf50021ba in JOIN::optimize_inner() /mariadb/10.5m/sql/sql_select.cc:2260:7

    #14 0x562cf4fe4abc in JOIN::optimize() /mariadb/10.5m/sql/sql_select.cc:1606:10

    #15 0x562cf4fc5875 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /mariadb/10.5m/sql/sql_select.cc:4650:19

    #16 0x562cf4fc4f48 in handle_select(THD*, LEX*, select_result*, unsigned long) /mariadb/10.5m/sql/sql_select.cc:417:10

    #17 0x562cf4efddd2 in execute_sqlcom_select(THD*, TABLE_LIST*) /mariadb/10.5m/sql/sql_parse.cc:6168:12

    #18 0x562cf4edc2a4 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:3901:12

    #19 0x562cf4ec94c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #20 0x562cf4ebd8b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #21 0x562cf4ecb28c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #22 0x562cf54cdf0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #23 0x562cf54cd4e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #24 0x562cf693e1e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #25 0x7ff22f6cbf26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #26 0x7ff22f1a52ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'stack' in the stack frame of function 'my_qsort2'

    #0 0x562cf7e70be0 in my_qsort2 /mariadb/10.5m/mysys/mf_qsort.c:100

CURRENT_TEST: main.opt_trace_ucs2

mysqltest: At line 8: query 'explain format=json select * from t1 force index(col1) where col1 >='a'' failed: 2013: Lost connection to MySQL server during query

…

==2534814==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x557169a48491 in my_gcvt /mariadb/10.5m/strings/dtoa.c:294:19

    #1 0x557169a595f3 in process_dbl_arg /mariadb/10.5m/strings/my_vsnprintf.c:248:10

    #2 0x557169a595f3 in my_vsnprintf_ex /mariadb/10.5m/strings/my_vsnprintf.c:638:11

    #3 0x557169a5f5b3 in my_vsnprintf /mariadb/10.5m/strings/my_vsnprintf.c:704:10

    #4 0x557169a5f5b3 in my_snprintf /mariadb/10.5m/strings/my_vsnprintf.c:713:11

    #5 0x55716701b209 in Json_writer::add_double(double) /mariadb/10.5m/sql/my_json_writer.cc:185:15

    #6 0x557167b9225d in Json_value_helper::add_double(double) /mariadb/10.5m/sql/my_json_writer.h:288:15

    #7 0x557167b9225d in Json_writer_object::add(char const*, double) /mariadb/10.5m/sql/my_json_writer.h:406:15

    #8 0x557167b9225d in calculate_cond_selectivity_for_table(THD*, TABLE*, Item**) /mariadb/10.5m/sql/opt_range.cc:3360:33

    #9 0x5571669ceb59 in make_join_statistics(JOIN*, List<TABLE_LIST>&, st_dynamic_array*) /mariadb/10.5m/sql/sql_select.cc:5455:13

    #10 0x5571669b11ba in JOIN::optimize_inner() /mariadb/10.5m/sql/sql_select.cc:2260:7

    #11 0x557166993abc in JOIN::optimize() /mariadb/10.5m/sql/sql_select.cc:1606:10

    #12 0x557166974875 in mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_select_lex*) /mariadb/10.5m/sql/sql_select.cc:4650:19

    #13 0x557166ac0bfd in mysql_explain_union(THD*, st_select_lex_unit*, select_result*) /mariadb/10.5m/sql/sql_select.cc:27182:10

    #14 0x5571668ac272 in execute_sqlcom_select(THD*, TABLE_LIST*) /mariadb/10.5m/sql/sql_parse.cc:6107:12

    #15 0x55716688b2a4 in mysql_execute_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:3901:12

    #16 0x5571668784c0 in mysql_parse(THD*, char*, unsigned int, Parser_state*, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:7953:18

    #17 0x55716686c8b1 in dispatch_command(enum_server_command, THD*, char*, unsigned int, bool, bool) /mariadb/10.5m/sql/sql_parse.cc:1839:7

    #18 0x55716687a28c in do_command(THD*) /mariadb/10.5m/sql/sql_parse.cc:1358:17

    #19 0x557166e7cf0b in do_handle_one_connection(CONNECT*, bool) /mariadb/10.5m/sql/sql_connect.cc:1422:11

    #20 0x557166e7c4e6 in handle_one_connection /mariadb/10.5m/sql/sql_connect.cc:1319:5

    #21 0x5571682ed1e7 in pfs_spawn_thread /mariadb/10.5m/storage/perfschema/pfs.cc:2201:3

    #22 0x7f8dd74c8f26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #23 0x7f8dd6fa22ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'stat_tables' in the stack frame of function '_Z26read_statistics_for_tablesP3THDP10TABLE_LIST'

    #0 0x557166ba5b00 in read_statistics_for_tables(THD*, TABLE_LIST*) /mariadb/10.5m/sql/sql_statistics.cc:3291

CURRENT_TEST: innodb_fts.innodb_fts_misc

mysqltest: At line 902: query 'ALTER TABLE t1 ADD FULLTEXT INDEX idx (a,b)' failed: 2013: Lost connection to MySQL server during query

…

Uninitialized bytes in MemcmpInterceptorCommon at offset 14 inside [0x7fce48869f00, 17)

==2536284==WARNING: MemorySanitizer: use-of-uninitialized-value

    #0 0x558021dffa2c in bcmp (/dev/shm/10.5ms/sql/mariadbd+0x6dea2c)

    #1 0x558024d3c12b in dict_table_t* dict_acquire_mdl_shared<false>(dict_table_t*, THD*, MDL_ticket**, dict_table_op_t) /mariadb/10.5m/storage/innobase/dict/dict0dict.cc:892:10

    #2 0x558024ce8e40 in dict_table_open_on_id(unsigned long, bool, dict_table_op_t, THD*, MDL_ticket**) /mariadb/10.5m/storage/innobase/dict/dict0dict.cc:947:12

    #3 0x5580246f620b in row_purge_parse_undo_rec(purge_node_t*, unsigned char*, que_thr_t*, bool*) /mariadb/10.5m/storage/innobase/row/row0purge.cc:933:16

    #4 0x5580246f620b in row_purge(purge_node_t*, unsigned char*, que_thr_t*) /mariadb/10.5m/storage/innobase/row/row0purge.cc:1107:10

    #5 0x5580246f620b in row_purge_step(que_thr_t*) /mariadb/10.5m/storage/innobase/row/row0purge.cc:1159:3

    #6 0x5580244c6370 in que_thr_step(que_thr_t*) /mariadb/10.5m/storage/innobase/que/que0que.cc:1038:9

    #7 0x5580244c6370 in que_run_threads_low(que_thr_t*) /mariadb/10.5m/storage/innobase/que/que0que.cc:1100:14

    #8 0x5580244c6370 in que_run_threads(que_thr_t*) /mariadb/10.5m/storage/innobase/que/que0que.cc:1140:2

    #9 0x558024819043 in srv_task_execute() /mariadb/10.5m/storage/innobase/srv/srv0srv.cc:2055:3

    #10 0x558024819043 in purge_worker_callback(void*) /mariadb/10.5m/storage/innobase/srv/srv0srv.cc:2205:10

    #11 0x5580250aa413 in tpool::task_group::execute(tpool::task*) /mariadb/10.5m/tpool/task_group.cc:55:9

    #12 0x55802509dd72 in tpool::thread_pool_generic::worker_main(tpool::worker_data*) /mariadb/10.5m/tpool/tpool_generic.cc:518:11

    #13 0x5580250a77bc in decltype(*(std::__1::forward<tpool::thread_pool_generic*>(fp0)).*fp(std::__1::forward<tpool::worker_data*>(fp1))) std::__1::__invoke<void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*, void>(void (tpool::thread_pool_generic::*&&)(tpool::worker_data*), tpool::thread_pool_generic*&&, tpool::worker_data*&&) /usr/lib/llvm-10/bin/../include/c++/v1/type_traits:3480:1

    #14 0x5580250a77bc in void std::__1::__thread_execute<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*, 2ul, 3ul>(std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*>&, std::__1::__tuple_indices<2ul, 3ul>) /usr/lib/llvm-10/bin/../include/c++/v1/thread:273:5

    #15 0x5580250a77bc in void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void (tpool::thread_pool_generic::*)(tpool::worker_data*), tpool::thread_pool_generic*, tpool::worker_data*> >(void*) /usr/lib/llvm-10/bin/../include/c++/v1/thread:284:5

    #16 0x7fce54cf8f26 in start_thread /build/glibc-WZtAaN/glibc-2.30/nptl/pthread_create.c:479:8

    #17 0x7fce547d22ee in clone /build/glibc-WZtAaN/glibc-2.30/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:95

  Uninitialized value was created by an allocation of 'db_buf' in the stack frame of function '_Z23dict_acquire_mdl_sharedILb0EEP12dict_table_tS1_P3THDPP10MDL_ticket15dict_table_op_t'

    #0 0x558024d3b200 in dict_table_t* dict_acquire_mdl_shared<false>(dict_table_t*, THD*, MDL_ticket**, dict_table_op_t) /mariadb/10.5m/storage/innobase/dict/dict0dict.cc:790

Completed: Failed 55/5274 tests, 98.96% were successful.Failing test(s): rpl.rpl_row_end_of_statement_loss encryption.create_or_replace rpl.rpl_parallel_optimistic_xa_lsu_off binlog_encryption.encrypted_master encryption.innodb_encryption_discard_import rpl.rpl_non_direct_stm_mixing_engines rpl.rpl_mixed_mixing_engines wsrep_info.plugin perfschema.hostcache_ipv6_ssl main.userstat perfschema.transaction_nested_events main.mysql_client_test_nonblock main.mysql_client_test rpl.rpl_gtid_ignored main.mysql_upgrade_ssl main.opt_trace_index_merge_innodb maria.maria-recovery2 main.mysql_client_test_comp main.ssl_7937 plugins.multiauth main.ssl_8k_key main.ssl_timeout-9836 main.tls_version main.opt_trace_security main.opt_trace_ucs2 main.func_debug main.flush_ssl main.ssl main.myisampack main.ssl_ca main.ssl_cipher main.ssl_compress main.ssl_connect main.openssl_1 main.ssl_timeout main.opt_trace_index_merge perfschema.connection_type_notwin main.loadxml perfschema.hostcache_ipv4_ssl plugins.auth_ed25519 sys_vars.pseudo_slave_mode_basic sys_vars.replicate_do_table_grant type_inet.type_inet6 main.ssl-big innodb.innodb_bulk_create_index_debug main.opt_trace client.mariadb-conv-utf8 client.mariadb-conv-cp932 innodb.alter_large_dml

Failing test(s): main.mysql_client_test_nonblock main.mysql_client_test main.mysql_client_test_comp 

CURRENT_TEST: main.mysql_client_test_nonblock

mysqltest: At line 22: exec of '/dev/shm/10.5-msan/tests/mysql_client_test --defaults-file=/dev/shm/10.5-msan/mysql-test/var/1/my.cnf --testcase --vardir=/dev/shm/10.5-msan/mysql-test/var/1 --non-blocking-api --getopt-ll-test=25600M >> /dev/shm/10.5-msan/mysql-test/var/1/log/mysql_client_test.out.log 2>&1' failed, error: 256, status: 1, errno: 11

main.tls_version main.ssl_8k_key main.flush_ssl rpl.rpl_parallel_conflicts perfschema.hostcache_ipv6_ssl main.ssl_ca main.userstat perfschema.transaction_nested_events main.mysql_upgrade_ssl main.ssl_7937 main.openssl_1 main.ssl_connect main.ssl_timeout-9836 main.ssl main.ssl_cipher main.ssl-big main.ssl_compress perfschema.connection_type_notwin main.ssl_timeout perfschema.hostcache_ipv4_ssl innodb.innodb_bulk_create_index_debug

#!/bin/sh

unset LD_LIBRARY_PATH

exec llvm-symbolizer-15 "$@"

CLANG=17 ./build-msan16.sh

--- build-msan16.sh	2023-09-22 13:34:39.607121198 +0300

+++ build-msan18.sh	2024-03-08 08:34:21.091289335 +0200

@@ -1,6 +1,6 @@

 #!/bin/sh

 set -eux

-: ${CLANG=16}

+: ${CLANG=18}

 : ${MSAN_LIBDIR=..}

 : ${PARALLEL=$(nproc)}

@@ -22,7 +22,7 @@

 mkdir -p ll-build

 cd ll-build

 cmake ../llvm-toolchain-$CLANG-$CLANG.*/runtimes -DCMAKE_BUILD_TYPE=Release \

-      -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi" \

+      -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind" \

       -DCMAKE_C_COMPILER=clang-$CLANG \

       -DCMAKE_CXX_COMPILER=clang++-$CLANG \

       -DLLVM_USE_SANITIZER=MemoryWithOrigins

--- build-msan18.sh	2024-03-08 08:34:21.091289335 +0200

+++ build-msan19.sh	2024-08-26 11:47:21.256980501 +0300

@@ -1,6 +1,6 @@

 #!/bin/sh

 set -eux

-: ${CLANG=18}

+: ${CLANG=19}

 : ${MSAN_LIBDIR=..}

 : ${PARALLEL=$(nproc)}

@@ -15,14 +15,17 @@

 fi

 sudo apt -o APT::Get::Assume-Yes=true install \

-    clang-$CLANG libc++-$CLANG-dev libc++abi-$CLANG-dev automake

+    clang-$CLANG libc++-$CLANG-dev libc++abi-$CLANG-dev \

+    libclang-$CLANG-dev libllvmlibc-$CLANG-dev automake

 apt -o APT::Get::Assume-Yes=true source \

-    llvm-toolchain-$CLANG libgnutls28-dev libnettle8 libidn2 libgmp10

+    llvm-toolchain-$CLANG libgnutls28-dev libnettle8t64 libidn2 libgmp10

 mkdir -p ll-build

 cd ll-build

 cmake ../llvm-toolchain-$CLANG-$CLANG.*/runtimes -DCMAKE_BUILD_TYPE=Release \

-      -DLLVM_ENABLE_RUNTIMES="libcxx;libcxxabi;libunwind" \

+      -DLLVM_ENABLE_RUNTIMES="libc;libcxx;libcxxabi;libunwind" \

+      -DLLVM_INCLUDE_TESTS=OFF -DLLVM_INCLUDE_DOCS=OFF \

+      -DLLVM_ENABLE_SPHINX=OFF \

       -DCMAKE_C_COMPILER=clang-$CLANG \

       -DCMAKE_CXX_COMPILER=clang++-$CLANG \

       -DLLVM_USE_SANITIZER=MemoryWithOrigins