Fix unsigned int overflow (#1530)

Author: shiyuhang0

driver_test.go

@@ -388,16 +388,16 @@ func TestCRUD(t *testing.T){
 funcTestNumbersToAny(t*testing.T){
 runTestsParallel(t, dsn, func(dbt*DBTest, tblstring){
 dbt.mustExec("CREATE TABLE "+tbl+" (id INT PRIMARY KEY, b BOOL, i8 TINYINT, "+
-"i16 SMALLINT, i32 INT, i64 BIGINT, f32 FLOAT, f64 DOUBLE)")
-dbt.mustExec("INSERT INTO "+tbl+" VALUES (1, true, 127, 32767, 2147483647, 9223372036854775807, 1.25, 2.5)")
+"i16 SMALLINT, i32 INT, i64 BIGINT, f32 FLOAT, f64 DOUBLE, iu32 INT UNSIGNED)")
+dbt.mustExec("INSERT INTO "+tbl+" VALUES (1, true, 127, 32767, 2147483647, 9223372036854775807, 1.25, 2.5, 4294967295)")
 
-// Use binaryRows for intarpolateParams=false and textRows for intarpolateParams=true.
-rows:=dbt.mustQuery("SELECT b, i8, i16, i32, i64, f32, f64 FROM "+tbl+" WHERE id=?", 1)
+// Use binaryRows for interpolateParams=false and textRows for interpolateParams=true.
+rows:=dbt.mustQuery("SELECT b, i8, i16, i32, i64, f32, f64, iu32 FROM "+tbl+" WHERE id=?", 1)
 if!rows.Next(){
 dbt.Fatal("no data")
  }
-varb, i8, i16, i32, i64, f32, f64any
-err:=rows.Scan(&b, &i8, &i16, &i32, &i64, &f32, &f64)
+varb, i8, i16, i32, i64, f32, f64, iu32any
+err:=rows.Scan(&b, &i8, &i16, &i32, &i64, &f32, &f64, &iu32)
 iferr!=nil{
 dbt.Fatal(err)
  }
@@ -422,6 +422,9 @@ func TestNumbersToAny(t *testing.T){
 iff64.(float64) !=2.5{
 dbt.Errorf("f64 != 2.5")
  }
+ifiu32.(int64) !=4294967295{
+dbt.Errorf("iu32 != 4294967295")
+ }
  })
 }
 

packets.go

@@ -828,7 +828,7 @@ func (rows *textRows) readRow(dest []driver.Value) error{
  }
 
 casefieldTypeTiny, fieldTypeShort, fieldTypeInt24, fieldTypeYear, fieldTypeLong:
-dest[i], err=strconv.ParseInt(string(buf), 10, 32)
+dest[i], err=strconv.ParseInt(string(buf), 10, 64)
 
 casefieldTypeLongLong:
 ifrows.rs.columns[i].flags&flagUnsigned!=0{