diff options
| -rw-r--r-- | mysql-test/r/func_str.result | 6 | ||||
| -rw-r--r-- | mysql-test/t/func_str.test | 6 | ||||
| -rw-r--r-- | sql/item_strfunc.h | 6 |
3 files changed, 17 insertions, 1 deletions
diff --git a/mysql-test/r/func_str.result b/mysql-test/r/func_str.result index 052451f8c54..d09d3aeb529 100644 --- a/mysql-test/r/func_str.result +++ b/mysql-test/r/func_str.result @@ -1940,4 +1940,10 @@ abcxx select lpad('abc', cast(5 as unsigned integer), 'x'); lpad('abc', cast(5 as unsigned integer), 'x') xxabc +SELECT UNHEX('G'); +UNHEX('G') +NULL +SELECT UNHEX('G') IS NULL; +UNHEX('G') IS NULL +1 End of 5.0 tests diff --git a/mysql-test/t/func_str.test b/mysql-test/t/func_str.test index 64b59025d44..2e76dc2ca31 100644 --- a/mysql-test/t/func_str.test +++ b/mysql-test/t/func_str.test @@ -1008,4 +1008,10 @@ select repeat('a', cast(2 as unsigned int)); select rpad('abc', cast(5 as unsigned integer), 'x'); select lpad('abc', cast(5 as unsigned integer), 'x'); +# +# Bug #26537: UNHEX() IS NULL comparison fails +# +SELECT UNHEX('G'); +SELECT UNHEX('G') IS NULL; + --echo End of 5.0 tests diff --git a/sql/item_strfunc.h b/sql/item_strfunc.h index 60547d00a5c..778ea6e9496 100644 --- a/sql/item_strfunc.h +++ b/sql/item_strfunc.h @@ -605,7 +605,11 @@ class Item_func_unhex :public Item_str_func { String tmp_value; public: - Item_func_unhex(Item *a) :Item_str_func(a) {} + Item_func_unhex(Item *a) :Item_str_func(a) + { + /* there can be bad hex strings */ + maybe_null= 1; + } const char *func_name() const { return "unhex"; } String *val_str(String *); void fix_length_and_dec() |