overflow/inf in vec_distance_euclidean

Author: vuvova

mysql-test/main/vector2.result

@@ -489,4 +489,13 @@ drop table t1;
 #
 create table t1(v vector (16384) not null,vector (v));
 ERROR 42000: Column length too big for column 'v' (max = 16383); use BLOB or TEXT instead
+#
+# overflow/inf in vec_distance_euclidean
+#
+select vec_totext(0x03CA397B);
+vec_totext(0x03CA397B)
+[9.64672e35]
+select vec_distance_euclidean(0x03CA397B, vec_fromtext('[0]'));
+vec_distance_euclidean(0x03CA397B, vec_fromtext('[0]'))
+9.64672e35
 # End of 11.8 tests

mysql-test/main/vector2.test

@@ -361,4 +361,11 @@ drop table t1;
 --error ER_TOO_BIG_FIELDLENGTH
 create table t1(v vector (16384) not null,vector (v));
 
+--echo #
+--echo # overflow/inf in vec_distance_euclidean
+--echo #
+select vec_totext(0x03CA397B);
+--replace_regex /(\.\d{5})\d+/\1/
+select vec_distance_euclidean(0x03CA397B, vec_fromtext('[0]'));
+
 --echo # End of 11.8 tests

sql/item_vectorfunc.cc

@@ -29,7 +29,7 @@ static double calc_distance_euclidean(float *v1, float *v2, size_t v_len)
   double d= 0;
   for (size_t i= 0; i < v_len; i++, v1++, v2++)
   {
-    float dist= get_float(v1) - get_float(v2);
+    double dist= get_float(v1) - get_float(v2);
     d+= dist * dist;
   }
   return sqrt(d);