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This commit is contained in:
Georgi Kodinov 2009-10-24 09:57:31 +03:00
commit 9a5a77eb68
3 changed files with 35 additions and 2 deletions
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12
mysql-test/r/gis.result
View File

@ -972,6 +972,18 @@ select min(`col002`) from t1 union select `col002` from t1;
min(`col002`)
NULL
drop table t1;
#
# Bug #47780: crash when comparing GIS items from subquery
#
CREATE TABLE t1(a INT, b MULTIPOLYGON);
INSERT INTO t1 VALUES
(0,
GEOMFROMTEXT(
'multipolygon(((1 2,3 4,5 6,7 8,9 8),(7 6,5 4,3 2,1 2,3 4)))'));
# must not crash
SELECT 1 FROM t1 WHERE a <> (SELECT GEOMETRYCOLLECTIONFROMWKB(b) FROM t1);
1
DROP TABLE t1;
End of 5.0 tests
create table t1 (f1 tinyint(1), f2 char(1), f3 varchar(1), f4 geometry, f5 datetime);
create view v1 as select * from t1;

16
mysql-test/t/gis.test
View File

@ -655,6 +655,22 @@ insert into t1 values (),(),();
select min(`col002`) from t1 union select `col002` from t1;
drop table t1;
--echo #
--echo # Bug #47780: crash when comparing GIS items from subquery
--echo #
CREATE TABLE t1(a INT, b MULTIPOLYGON);
INSERT INTO t1 VALUES
(0,
GEOMFROMTEXT(
'multipolygon(((1 2,3 4,5 6,7 8,9 8),(7 6,5 4,3 2,1 2,3 4)))'));
--echo # must not crash
SELECT 1 FROM t1 WHERE a <> (SELECT GEOMETRYCOLLECTIONFROMWKB(b) FROM t1);
DROP TABLE t1;
--echo End of 5.0 tests

9
sql/item_geofunc.cc
View File

@ -84,7 +84,9 @@ String *Item_func_geometry_from_wkb::val_str(String *str)
if (args[0]->field_type() == MYSQL_TYPE_GEOMETRY)
{
return args[0]->val_str(str);
String *str_ret= args[0]->val_str(str);
null_value= args[0]->null_value;
return str_ret;
}
wkb= args[0]->val_str(&arg_val);
@ -94,7 +96,10 @@ String *Item_func_geometry_from_wkb::val_str(String *str)
str->set_charset(&my_charset_bin);
if (str->reserve(SRID_SIZE, 512))
return 0;
{
null_value= TRUE; /* purecov: inspected */
return 0; /* purecov: inspected */
}
str->length(0);
str->q_append(srid);
if ((null_value=