Bug #76477 Assertion `from->len == to->len' failed.
Submitted: 24 Mar 2015 23:54 Modified: 1 Apr 2015 4:28
Reporter: Roel Van de Paar Email Updates:
Status: Closed Impact on me:
None 
Category:MySQL Server: DML Severity:S1 (Critical)
Version:5.6.22, 5.6.23, 5.6.25 OS:Any
Assigned to: CPU Architecture:Any

[24 Mar 2015 23:54] Roel Van de Paar 
Description:
2015-03-25 10:48:39 22644 [Note] /sda/mysql-5.6.22-linux-x86_64-debug/bin/mysqld: ready for connections.
Version: '5.6.22-debug'  socket: '/sda/mysql-5.6.22-linux-x86_64-debug/socket.sock'  port: 17047  MySQL Community Server (GPL)
mysqld: /bzr/mysql-5.6/strings/decimal.c:1587: decimal_round: Assertion `from->len == to->len' failed.
23:48:44 UTC - mysqld got signal 6 ;

+bt
#0  0x00007fa1ecb08771 in pthread_kill () from /lib64/libpthread.so.0
#1  0x0000000000a965ee in my_write_core (sig=6) at /bzr/mysql-5.6/mysys/stacktrace.c:422
#2  0x0000000000726728 in handle_fatal_signal (sig=6) at /bzr/mysql-5.6/sql/signal_handler.cc:230
#3  <signal handler called>
#4  0x00007fa1eb9145c9 in raise () from /lib64/libc.so.6
#5  0x00007fa1eb915cd8 in abort () from /lib64/libc.so.6
#6  0x00007fa1eb90d536 in __assert_fail_base () from /lib64/libc.so.6
#7  0x00007fa1eb90d5e2 in __assert_fail () from /lib64/libc.so.6
#8  0x0000000000e54a80 in decimal_round (from=0x7fa150420138, to=0x7fa1ed0fb7b0, scale=0, mode=HALF_UP) at /bzr/mysql-5.6/strings/decimal.c:1587
#9  0x00000000006690dc in my_decimal2int (mask=28, d=0x7fa150420138, unsigned_flag=0 '\000', l=0x7fa1ed0fb840) at /bzr/mysql-5.6/sql/my_decimal.h:378
#10 0x00000000008f467b in Field::convert_decimal2longlong (this=0x7fa150498810, val=0x7fa150420138, unsigned_flag=false, has_overflow=0x7fa1ed0fb873) at /bzr/mysql-5.6/sql/field.cc:1649
#11 0x00000000008f477d in Field_num::store_decimal (this=0x7fa150498810, val=0x7fa150420138) at /bzr/mysql-5.6/sql/field.cc:1680
#12 0x000000000065e903 in Item_decimal::save_in_field (this=0x7fa1504200a0, field=0x7fa150498810, no_conversions=true) at /bzr/mysql-5.6/sql/item.cc:6429
#13 0x0000000000650d0e in Item::save_in_field_no_warnings (this=0x7fa1504200a0, field=0x7fa150498810, no_conversions=true) at /bzr/mysql-5.6/sql/item.cc:1505
#14 0x0000000000958588 in save_value_and_handle_conversion (tree=0x7fa1ed0fbda8, value=0x7fa1504200a0, comp_op=Item_func::LT_FUNC, field=0x7fa150498810, impossible_cond_cause=0x7fa1ed0fbda0, memroot=0x7fa1ed0fc360) at /bzr/mysql-5.6/sql/opt_range.cc:6634
#15 0x0000000000959137 in get_mm_leaf (param=0x7fa1ed0fc560, conf_func=0x7fa15041fc48, field=0x7fa150498810, key_part=0x7fa150495030, type=Item_func::LT_FUNC, value=0x7fa1504200a0) at /bzr/mysql-5.6/sql/opt_range.cc:7005
#16 0x000000000095831e in get_mm_parts (param=0x7fa1ed0fc560, cond_func=0x7fa15041fc48, field=0x7fa150498810, type=Item_func::LT_FUNC, value=0x7fa1504200a0, cmp_type=INT_RESULT) at /bzr/mysql-5.6/sql/opt_range.cc:6546
#17 0x0000000000956a83 in get_func_mm_tree (param=0x7fa1ed0fc560, cond_func=0x7fa15041fc48, field=0x7fa150498810, value=0x0, cmp_type=INT_RESULT, inv=true) at /bzr/mysql-5.6/sql/opt_range.cc:5977
#18 0x0000000000957205 in get_full_func_mm_tree (param=0x7fa1ed0fc560, cond_func=0x7fa15041fc48, field_item=0x7fa15041f898, value=0x0, inv=true) at /bzr/mysql-5.6/sql/opt_range.cc:6210
#19 0x0000000000957cdf in get_mm_tree (param=0x7fa1ed0fc560, cond=0x7fa15041fc48) at /bzr/mysql-5.6/sql/opt_range.cc:6415
#20 0x000000000094f54b in SQL_SELECT::test_quick_select (this=0x7fa15041ff30, thd=0x7fa159724000, keys_to_use=..., prev_tables=0, limit=18446744073709551615, force_quick_range=false, interesting_order=st_order::ORDER_NOT_RELEVANT) at /bzr/mysql-5.6/sql/opt_range.cc:2830
#21 0x0000000000867888 in SQL_SELECT::check_quick (this=0x7fa15041ff30, thd=0x7fa159724000, force_quick_range=false, limit=18446744073709551615) at /bzr/mysql-5.6/sql/opt_range.h:938
#22 0x0000000000861787 in mysql_update (thd=0x7fa159724000, table_list=0x7fa15041f140, fields=..., values=..., conds=0x7fa15041fc48, order_num=0, order=0x0, limit=18446744073709551615, handle_duplicates=DUP_ERROR, ignore=false, found_return=0x7fa1ed0ff9f8, updated_return=0x7fa1ed0ff9f0) at /bzr/mysql-5.6/sql/sql_update.cc:463
#23 0x00000000007d412b in mysql_execute_command (thd=0x7fa159724000) at /bzr/mysql-5.6/sql/sql_parse.cc:3307
#24 0x00000000007dc4be in mysql_parse (thd=0x7fa159724000, rawbuf=0x7fa15041f010 "UPDATE t1 SET b=1 WHERE b NOT IN(NULL,-", '3' <repeats 22 times>, ")", length=62, parser_state=0x7fa1ed0ffe70) at /bzr/mysql-5.6/sql/sql_parse.cc:6357
#25 0x00000000007cf630 in dispatch_command (command=COM_QUERY, thd=0x7fa159724000, packet=0x7fa15976c001 "UPDATE t1 SET b=1 WHERE b NOT IN(NULL,-", '3' <repeats 22 times>, ")", packet_length=62) at /bzr/mysql-5.6/sql/sql_parse.cc:1332
#26 0x00000000007ce71f in do_command (thd=0x7fa159724000) at /bzr/mysql-5.6/sql/sql_parse.cc:1034
#27 0x0000000000796b09 in do_handle_one_connection (thd_arg=0x7fa159724000) at /bzr/mysql-5.6/sql/sql_connect.cc:982
#28 0x00000000007965f2 in handle_one_connection (arg=0x7fa159724000) at /bzr/mysql-5.6/sql/sql_connect.cc:898
#29 0x0000000000ae4ba0 in pfs_spawn_thread (arg=0x7fa1e6349b00) at /bzr/mysql-5.6/storage/perfschema/pfs.cc:1860
#30 0x00007fa1ecb03df3 in start_thread () from /lib64/libpthread.so.0
#31 0x00007fa1eb9d51ad in clone () from /lib64/libc.so.6

How to repeat:
DROP DATABASE test;CREATE DATABASE test;USE test;
CREATE TABLE t1(a int,b INT,c CHAR,KEY (a,b));
XA START0;
UPDATE t1 SET b=1 WHERE b NOT IN(NULL,-3333333333333333333333);
[25 Mar 2015 4:37] MySQL Verification Team 
Hello Roel,

Thank you for the report and test case.
Confirmed that debug builds of 5.6(checked 5.6.23 and 5.6.25) are affected.

Thanks,
Umesh
[25 Mar 2015 4:37] MySQL Verification Team 
// 5.6.23 (debug build)

scripts/mysql_install_db --basedir=/export/umesh/mysql-5.6.23 --datadir=/export/umesh/mysql-5.6.23/76477
bin/mysqld-debug --basedir=/export/umesh/mysql-5.6.23 --datadir=/export/umesh/mysql-5.6.23/76477 --core-file --socket=/tmp/mysql_ushastry.sock  --port=15000 --log-error=/export/umesh/mysql-5.6.23/76477/log.err 2>&1 &

- build
date: 2015-01-19 14:26:20 +0100
build-date: 2015-01-19 14:38:00 +0100
short: 19ff977
branch: mysql-5.6.23-release

MySQL source 5.6.23

(gdb) bt
#0  0x00007f93a06d7771 in pthread_kill () from /lib64/libpthread.so.0
#1  0x0000000000aacb93 in my_write_core (sig=6) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/mysys/stacktrace.c:422
#2  0x000000000071513e in handle_fatal_signal (sig=6) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/signal_handler.cc:230
#3  <signal handler called>
#4  0x00007f939f2dd5c9 in raise () from /lib64/libc.so.6
#5  0x00007f939f2decd8 in abort () from /lib64/libc.so.6
#6  0x00007f939f2d6536 in __assert_fail_base () from /lib64/libc.so.6
#7  0x00007f939f2d65e2 in __assert_fail () from /lib64/libc.so.6
#8  0x0000000000e5d4a2 in decimal_round (from=0x7f93400060f8, to=0x7f937609b5c0, scale=0, mode=HALF_UP) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/strings/decimal.c:1587
#9  0x00000000006535cc in my_decimal2int (mask=28, d=0x7f93400060f8, unsigned_flag=0 '\000', l=0x7f937609b670)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/my_decimal.h:378
#10 0x000000000090c831 in Field::convert_decimal2longlong (this=0x7f93400599a0, val=0x7f93400060f8, unsigned_flag=false, has_overflow=0x7f937609b6bf)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/field.cc:1649
#11 0x000000000090c99b in Field_num::store_decimal (this=0x7f93400599a0, val=0x7f93400060f8) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/field.cc:1680
#12 0x000000000062e5ce in Item_decimal::save_in_field (this=0x7f9340006060, field=0x7f93400599a0, no_conversions=true)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/item.cc:6432
#13 0x00000000006352d9 in Item::save_in_field_no_warnings (this=0x7f9340006060, field=0x7f93400599a0, no_conversions=true)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/item.cc:1505
#14 0x000000000095ca89 in save_value_and_handle_conversion (tree=0x7f937609bc88, value=0x7f9340006060, comp_op=Item_func::LT_FUNC, field=0x7f93400599a0, impossible_cond_cause=0x7f937609bc80,
    memroot=0x7f937609e590) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/opt_range.cc:6634
#15 0x000000000095d71e in get_mm_leaf (param=0x7f937609c2f0, conf_func=0x7f9340005c08, field=0x7f93400599a0, key_part=0x7f934000fec0, type=Item_func::LT_FUNC, value=0x7f9340006060)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/opt_range.cc:7005
#16 0x000000000095e07c in get_mm_parts (param=0x7f937609c2f0, cond_func=0x7f9340005c08, field=0x7f93400599a0, type=Item_func::LT_FUNC, value=0x7f9340006060, cmp_type=INT_RESULT)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/opt_range.cc:6546
#17 0x000000000095e74d in get_func_mm_tree (param=0x7f937609c2f0, cond_func=0x7f9340005c08, field=0x7f93400599a0, value=0x0, cmp_type=INT_RESULT, inv=true)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/opt_range.cc:5977
#18 0x000000000095ef11 in get_full_func_mm_tree (param=0x7f937609c2f0, cond_func=0x7f9340005c08, field_item=0x7f9340005858, value=0x0, inv=true)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/opt_range.cc:6210
#19 0x000000000095faa0 in get_mm_tree (param=0x7f937609c2f0, cond=0x7f9340005c08) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/opt_range.cc:6415
#20 0x0000000000969145 in SQL_SELECT::test_quick_select (this=0x7f9340005ef0, thd=0x1cb49b0, keys_to_use=..., prev_tables=0, limit=18446744073709551615, force_quick_range=false,
    interesting_order=st_order::ORDER_NOT_RELEVANT) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/opt_range.cc:2830
#21 0x000000000085d8af in SQL_SELECT::check_quick (this=0x7f9340005ef0, thd=0x1cb49b0, force_quick_range=false, limit=18446744073709551615)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/opt_range.h:938
#22 0x000000000085ba87 in mysql_update (thd=0x1cb49b0, table_list=0x7f9340005100, fields=..., values=..., conds=0x7f9340005c08, order_num=0, order=0x0, limit=18446744073709551615,
    handle_duplicates=DUP_ERROR, ignore=false, found_return=0x7f937609fcd8, updated_return=0x7f937609fcd0)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/sql_update.cc:462
#23 0x00000000007ca94d in mysql_execute_command (thd=0x1cb49b0) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/sql_parse.cc:3307
#24 0x00000000007d0349 in mysql_parse (thd=0x1cb49b0, rawbuf=0x7f9340004fd0 "UPDATE t1 SET b=1 WHERE b NOT IN(NULL,-", '3' <repeats 22 times>, ")", length=62, parser_state=0x7f93760a0700)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/sql_parse.cc:6357
#25 0x00000000007d1ef3 in dispatch_command (command=COM_QUERY, thd=0x1cb49b0, packet=0x2491fb1 "UPDATE t1 SET b=1 WHERE b NOT IN(NULL,-", '3' <repeats 22 times>, ")", packet_length=62)
    at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/sql_parse.cc:1332
#26 0x00000000007d372d in do_command (thd=0x1cb49b0) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/sql_parse.cc:1034
#27 0x0000000000789521 in do_handle_one_connection (thd_arg=0x1cb49b0) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/sql_connect.cc:982
#28 0x00000000007895e7 in handle_one_connection (arg=0x1cb49b0) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/sql/sql_connect.cc:898
#29 0x0000000000d7a866 in pfs_spawn_thread (arg=0x2473af0) at /export/home/pb2/build/sb_0-14135570-1421676610.55/mysql-5.6.23/storage/perfschema/pfs.cc:1860
#30 0x00007f93a06d2df3 in start_thread () from /lib64/libpthread.so.0
#31 0x00007f939f39e47d in clone () from /lib64/libc.so.6
(gdb)
[25 Mar 2015 4:37] MySQL Verification Team 
// 5.6.25 

scripts/mysql_install_db --basedir=/export/umesh/mysql-5.6.25 --datadir=/export/umesh/mysql-5.6.25/76477
bin/mysqld-debug --basedir=/export/umesh/mysql-5.6.25 --datadir=/export/umesh/mysql-5.6.25/76477 --core-file --socket=/tmp/mysql_ushastry.sock  --port=15000 --log-error=/export/umesh/mysql-5.6.25/76477/log.err 2>&1 &

- build
commit: 7f58410b3f11eddb38ff8c57a7a58095f7db2910
date: 2015-03-23 14:34:22 +0530
build-date: 2015-03-23 10:21:42 +0100
short: 7f58410
branch: mysql-5.6

MySQL source 5.6.25

(gdb) bt
#0  0x00007fe4262df771 in pthread_kill () from /lib64/libpthread.so.0
#1  0x0000000000ae1373 in my_write_core (sig=6) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/mysys/stacktrace.c:422
#2  0x0000000000745fca in handle_fatal_signal (sig=6) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/signal_handler.cc:230
#3  <signal handler called>
#4  0x00007fe424ee55c9 in raise () from /lib64/libc.so.6
#5  0x00007fe424ee6cd8 in abort () from /lib64/libc.so.6
#6  0x00007fe424ede536 in __assert_fail_base () from /lib64/libc.so.6
#7  0x00007fe424ede5e2 in __assert_fail () from /lib64/libc.so.6
#8  0x0000000000e91475 in decimal_round (from=0x7fe3c80060f8, to=0x7fe3fbb91580, scale=0, mode=HALF_UP)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/strings/decimal.c:1655
#9  0x00000000006841da in my_decimal2int (mask=28, d=0x7fe3c80060f8, unsigned_flag=0 '\000', l=0x7fe3fbb91630)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/my_decimal.h:378
#10 0x000000000093f735 in Field::convert_decimal2longlong (this=0x7fe3c80602a0, val=0x7fe3c80060f8, unsigned_flag=false, has_overflow=0x7fe3fbb9167f)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/field.cc:1649
#11 0x000000000093f89f in Field_num::store_decimal (this=0x7fe3c80602a0, val=0x7fe3c80060f8) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/field.cc:1680
#12 0x000000000065f1a6 in Item_decimal::save_in_field (this=0x7fe3c8006060, field=0x7fe3c80602a0, no_conversions=true)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/item.cc:6432
#13 0x0000000000665eb1 in Item::save_in_field_no_warnings (this=0x7fe3c8006060, field=0x7fe3c80602a0, no_conversions=true)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/item.cc:1505
#14 0x000000000098fa89 in save_value_and_handle_conversion (tree=0x7fe3fbb91c48, value=0x7fe3c8006060, comp_op=Item_func::LT_FUNC, field=0x7fe3c80602a0, impossible_cond_cause=0x7fe3fbb91c40,
    memroot=0x7fe3fbb94550) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/opt_range.cc:6634
#15 0x000000000099071e in get_mm_leaf (param=0x7fe3fbb922b0, conf_func=0x7fe3c8005c08, field=0x7fe3c80602a0, key_part=0x7fe3c80656d0, type=Item_func::LT_FUNC, value=0x7fe3c8006060)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/opt_range.cc:7005
#16 0x000000000099107c in get_mm_parts (param=0x7fe3fbb922b0, cond_func=0x7fe3c8005c08, field=0x7fe3c80602a0, type=Item_func::LT_FUNC, value=0x7fe3c8006060, cmp_type=INT_RESULT)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/opt_range.cc:6546
#17 0x000000000099174d in get_func_mm_tree (param=0x7fe3fbb922b0, cond_func=0x7fe3c8005c08, field=0x7fe3c80602a0, value=0x0, cmp_type=INT_RESULT, inv=true)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/opt_range.cc:5977
#18 0x0000000000991f11 in get_full_func_mm_tree (param=0x7fe3fbb922b0, cond_func=0x7fe3c8005c08, field_item=0x7fe3c8005858, value=0x0, inv=true)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/opt_range.cc:6210
#19 0x0000000000992aa0 in get_mm_tree (param=0x7fe3fbb922b0, cond=0x7fe3c8005c08) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/opt_range.cc:6415
#20 0x000000000099c145 in SQL_SELECT::test_quick_select (this=0x7fe3c8005ef0, thd=0x236eb10, keys_to_use=..., prev_tables=0, limit=18446744073709551615, force_quick_range=false,
    interesting_order=st_order::ORDER_NOT_RELEVANT) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/opt_range.cc:2830
#21 0x000000000088fd6d in SQL_SELECT::check_quick (this=0x7fe3c8005ef0, thd=0x236eb10, force_quick_range=false, limit=18446744073709551615)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/opt_range.h:938
#22 0x000000000088df97 in mysql_update (thd=0x236eb10, table_list=0x7fe3c8005100, fields=..., values=..., conds=0x7fe3c8005c08, order_num=0, order=0x0, limit=18446744073709551615,
    handle_duplicates=DUP_ERROR, ignore=false, found_return=0x7fe3fbb95cd8, updated_return=0x7fe3fbb95cd0)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/sql_update.cc:462
#23 0x00000000007fc831 in mysql_execute_command (thd=0x236eb10) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/sql_parse.cc:3319
#24 0x000000000080229a in mysql_parse (thd=0x236eb10, rawbuf=0x7fe3c8004fd0 "UPDATE t1 SET b=1 WHERE b NOT IN(NULL,-", '3' <repeats 22 times>, ")", length=62, parser_state=0x7fe3fbb96700)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/sql_parse.cc:6391
#25 0x0000000000803ebe in dispatch_command (command=COM_QUERY, thd=0x236eb10, packet=0x249d801 "UPDATE t1 SET b=1 WHERE b NOT IN(NULL,-", '3' <repeats 22 times>, ")", packet_length=62)
    at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/sql_parse.cc:1340
#26 0x0000000000805748 in do_command (thd=0x236eb10) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/sql_parse.cc:1037
#27 0x00000000007bb291 in do_handle_one_connection (thd_arg=0x236eb10) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/sql_connect.cc:982
#28 0x00000000007bb357 in handle_one_connection (arg=0x236eb10) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/sql/sql_connect.cc:898
#29 0x0000000000b92d9c in pfs_spawn_thread (arg=0x23927c0) at /export/home/pb2/build/sb_0-14777162-1427103432.53/mysqlcom-pro-5.6.25/storage/perfschema/pfs.cc:1860
#30 0x00007fe4262dadf3 in start_thread () from /lib64/libpthread.so.0
#31 0x00007fe424fa647d in clone () from /lib64/libc.so.6
(gdb)
[25 Mar 2015 4:38] MySQL Verification Team 
// 5.5.44, 5.7.8, 5.8.0 - not affected
[25 Mar 2015 9:49] Tor Didriksen 
Posted by developer:
 
Duplicate of internal bug, fixed in 5.7.5
Bug #18335446 DECIMAL_ROUND: ASSERTION FAILED: FROM->LEN == TO->LEN
[27 Mar 2015 0:41] Roel Van de Paar 
Tor, thank you! May the testcase from this bug be added as MTR testcase?
[27 Mar 2015 3:36] MySQL Verification Team 
it's already in the mysql-test/t/type_newdecimal.result on 5.7.6 releases
[1 Apr 2015 4:28] Erlend Dahl 
[13 Mar 2014 6:49] Paul Dubois

Noted in 5.7.5 changelog.

In debug builds, lack of proper object initialization of decimal
objects caused an assertion to be raised.