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Bug#29363867: LOST CONNECTION TO MYSQL SERVER DURING QUERY

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The problem is that sharing default expression among set instruction
leads to attempt access result field of function created in
other instruction runtime MEM_ROOT and already freed
(a bit different then MySQL problem).

Fix is the same as in MySQL (but no optimisation for constant), turn
DECLARE a, b, c type DEFAULT expr;
to
DECLARE a type DEFAULT expr, b type DEFAULT a, c type DEFAULT a;
This commit is contained in:
Oleksandr Byelkin
2021-04-27 16:08:33 +02:00
parent e85b389b76
commit 24693c6fcf
4 changed files with 71 additions and 17 deletions
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26
mysql-test/suite/funcs_1/r/storedproc.result
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@ -7125,7 +7125,7 @@ CALL sp1();
x y z
000 000 000
Warnings:
Warning 1264 Out of range value for column 'z' at row 1
Warning 1264 Out of range value for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7163,7 +7163,7 @@ CALL sp1();
x y z
00000 00000 00000
Warnings:
Warning 1264 Out of range value for column 'z' at row 1
Warning 1264 Out of range value for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7201,7 +7201,7 @@ CALL sp1();
x y z
00000000 00000000 00000000
Warnings:
Warning 1264 Out of range value for column 'z' at row 1
Warning 1264 Out of range value for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7239,7 +7239,7 @@ CALL sp1();
x y z
0000000000 0000000000 0000000000
Warnings:
Warning 1264 Out of range value for column 'z' at row 1
Warning 1264 Out of range value for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7277,7 +7277,7 @@ CALL sp1();
x y z
00000000000000000000 00000000000000000000 00000000000000000000
Warnings:
Warning 1264 Out of range value for column 'z' at row 1
Warning 1264 Out of range value for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7297,7 +7297,7 @@ CALL sp1();
x y z
-9999999999 -9999999999 -9999999999
Warnings:
Warning 1264 Out of range value for column 'z' at row 1
Warning 1264 Out of range value for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7308,7 +7308,7 @@ CALL sp1();
x y z
0 0 0
Warnings:
Note 1265 Data truncated for column 'z' at row 1
Note 1265 Data truncated for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7319,7 +7319,7 @@ CALL sp1();
x y z
0000000000 0000000000 0000000000
Warnings:
Warning 1264 Out of range value for column 'z' at row 1
Warning 1264 Out of range value for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7330,7 +7330,7 @@ CALL sp1();
x y z
0000000000 0000000000 0000000000
Warnings:
Note 1265 Data truncated for column 'z' at row 1
Note 1265 Data truncated for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7341,7 +7341,7 @@ CALL sp1();
x y z
0 0 0
Warnings:
Note 1265 Data truncated for column 'z' at row 1
Note 1265 Data truncated for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7352,7 +7352,7 @@ CALL sp1();
x y z
0 0 0
Warnings:
Note 1265 Data truncated for column 'z' at row 1
Note 1265 Data truncated for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7363,7 +7363,7 @@ CALL sp1();
x y z
0000000000 0000000000 0000000000
Warnings:
Note 1265 Data truncated for column 'z' at row 1
Note 1265 Data truncated for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN
@ -7374,7 +7374,7 @@ CALL sp1();
x y z
0000000000 0000000000 0000000000
Warnings:
Note 1265 Data truncated for column 'z' at row 1
Note 1265 Data truncated for column 'x' at row 1
DROP PROCEDURE IF EXISTS sp1;
CREATE PROCEDURE sp1( )
BEGIN