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Bug #41437: Value stored in 'case' lacks charset, causes segfault

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When substituting system constant functions with a constant result
the server was not expecting that the function may return NULL.
Fixed by checking for NULL and returning Item_null (in the relevant
collation) if the result of the system constant function was NULL.
This commit is contained in:
Georgi Kodinov
2009-01-09 13:50:18 +02:00
parent 8d16eb71b3
commit 7c3ae51647
3 changed files with 13 additions and 0 deletions
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5
mysql-test/t/mysql.test
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@ -309,4 +309,9 @@ EOF
--exec $MYSQL -c < $MYSQLTEST_VARDIR/tmp/bug38158.sql 2>&1
remove_file $MYSQLTEST_VARDIR/tmp/bug38158.sql;
#
# Bug #41437: Value stored in 'case' lacks charset, causees segfault
#
--exec $MYSQL -e "select @z:='1',@z=database()"
--echo End of 5.0 tests