Error may be not nil

Reports instances where variables might have nil or an unexpected value because of the associated error that is not checked for being non-nil, as in v, err := foo().

The quick-fix removes the function from the scope of this inspection.

Example:

func _() {
    file, err := os.Open("file.txt")
    // Error check is omitted here
    name := file.Name()
    print(name, err)
}

In the example provided, file could be nil or have an unexpected value if err is not nil.

Locating this inspection

By ID

Can be used to locate inspection in e.g. Qodana configuration files, where you can quickly enable or disable it, or adjust its settings.

GoDfaErrorMayBeNotNil

Via Settings dialog

Path to the inspection settings via IntelliJ Platform IDE Settings dialog, when you need to adjust inspection settings directly from your IDE.

Settings or Preferences | Editor | Inspections | Go | Data flow analysis (experimental)

Inspection options

Here you can find the description of settings available for the Error may be not nil inspection, and the reference of their default values.

Exclude: None

Inspection Details
By default bundled with:	GoLand 2024.3, Qodana for Go 2024.3,
Can be installed with plugin:	Go, 243.23131

Last modified: 03 December 2024