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A fix and a test case for Bug#14210 "Simple query with > operator on

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large table gives server crash": make sure that when a MyISAM temporary
table is created for a cursor, it's created in its memory root,
not the memory root of the current query.
This commit is contained in:
konstantin@mysql.com
2005-11-03 14:20:13 +03:00
parent 69d985cc9d
commit 7e3f757f2d
11 changed files with 184 additions and 28 deletions
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54
tests/mysql_client_test.c
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@ -14319,6 +14319,7 @@ static void test_bug12243()
mysql_autocommit(mysql, TRUE); /* restore default */
}
/*
Bug#11718: query with function, join and order by returns wrong type
*/
@ -14366,6 +14367,58 @@ static void test_bug12925()
}
/*
Bug#14210 "Simple query with > operator on large table gives server
crash"
*/
static void test_bug14210()
{
MYSQL_STMT *stmt;
int rc, i;
const char *stmt_text;
ulong type;
myheader("test_bug14210");
mysql_query(mysql, "drop table if exists t1");
/*
To trigger the problem the table must be InnoDB, although the problem
itself is not InnoDB related. In case the table is MyISAM this test
is harmless.
*/
mysql_query(mysql, "create table t1 (a varchar(255)) type=InnoDB");
rc= mysql_query(mysql, "insert into t1 (a) values (repeat('a', 256))");
myquery(rc);
rc= mysql_query(mysql, "set @@session.max_heap_table_size=16384");
/* Create a big enough table (more than max_heap_table_size) */
for (i= 0; i < 8; i++)
{
rc= mysql_query(mysql, "insert into t1 (a) select a from t1");
myquery(rc);
}
/* create statement */
stmt= mysql_stmt_init(mysql);
type= (ulong) CURSOR_TYPE_READ_ONLY;
mysql_stmt_attr_set(stmt, STMT_ATTR_CURSOR_TYPE, (const void*) &type);
stmt_text= "select a from t1";
rc= mysql_stmt_prepare(stmt, stmt_text, strlen(stmt_text));
check_execute(stmt, rc);
rc= mysql_stmt_execute(stmt);
while ((rc= mysql_stmt_fetch(stmt)) == 0)
;
DIE_UNLESS(rc == MYSQL_NO_DATA);
rc= mysql_stmt_close(stmt);
rc= mysql_query(mysql, "drop table t1");
myquery(rc);
rc= mysql_query(mysql, "set @@session.max_heap_table_size=default");
myquery(rc);
}
/*
Read and parse arguments and MySQL options from my.cnf
*/
@ -14621,6 +14674,7 @@ static struct my_tests_st my_tests[]= {
{ "test_bug11901", test_bug11901 },
{ "test_bug11904", test_bug11904 },
{ "test_bug12243", test_bug12243 },
{ "test_bug14210", test_bug14210 },
{ 0, 0 }
};