Nil pointer dereference around execStagingOperation #265
Description
We recently upgraded to 1.7.0 and started getting a nil pointer. We downgraded to 1.6.1, and things are stable now. Corresponding stack trace:
panic: runtime error: invalid memory address or nil pointer dereference
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x2642668]
goroutine 5829 [running]:
github.com/databricks/databricks-sql-go.(*conn).execStagingOperation(0x4017f8b170, 0x4000db1d50, {0x47db718, 0x4017da5260})
/go/pkg/mod/github.com/databricks/databricks-sql-go@v1.7.0/connection.go:584 +0xd8
github.com/databricks/databricks-sql-go.(*conn).ExecContext(0x4017f8b170, {0x47db7c0?, 0x40007d6690?}, {0x40013c6f60, 0x1a}, {0x4000f8f0c8, 0x0, 0x0})
/go/pkg/mod/github.com/databricks/databricks-sql-go@v1.7.0/connection.go:119 +0x15c
github.com/databricks/databricks-sql-go.(*connector).Connect(0x4003e91ca0, {0x47db7c0, 0x40007d6690})
/go/pkg/mod/github.com/databricks/databricks-sql-go@v1.7.0/connector.go:70 +0x798
database/sql.(*DB).conn(0x4014efd450, {0x47db7c0, 0x40007d6690}, 0x1)
/usr/local/go/src/database/sql/sql.go:1431 +0x9b0
database/sql.(*DB).query(0x4014efd450, {0x47db7c0, 0x40007d6690}, {0x401aa5ebe0, 0x43}, {0x0, 0x0, 0x0}, 0x0?)
/usr/local/go/src/database/sql/sql.go:1759 +0x40
database/sql.(*DB).QueryContext.func1(0xbb?)
/usr/local/go/src/database/sql/sql.go:1742 +0x54
database/sql.(*DB).retry(0x4000f8f658?, 0x4000f8f630)
/usr/local/go/src/database/sql/sql.go:1576 +0x4c
database/sql.(*DB).QueryContext(0x47db718?, {0x47db7c0?, 0x40007d6690?}, {0x401aa5ebe0?, 0x4001d65b30?}, {0x0?, 0x1?, 0x1?})
/usr/local/go/src/database/sql/sql.go:1741 +0x9