'context.CancelFunc' is not called

Reports execution paths that do not call the cancel function returned by context.WithCancel and similar functions.

The WithCancel, WithDeadline, and WithTimeout functions take a Context (the parent) and return a derived Context (the child) and a CancelFunc. Calling the CancelFunc cancels the child and its children, removes the parent's reference to the child, and stops any associated timers. Failing to call the CancelFunc leaks the child and its children until the parent is canceled or the timer fires.

For more information about the context package, refer to Package context at go.dev.

Example:

func _(ctx context.Context, cancel func()) {
 var ctx2 context.Context
 ctx2, cancel = context.WithCancel(ctx)
 _ = ctx2
}

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.

GoVetLostCancel

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 | Probable bugs

Inspection ID: GoVetLostCancel

Suppressing Inspection

You can suppress this inspection by placing the following comment marker before the code fragment where you no longer want messages from this inspection to appear:

//noinspection GoVetLostCancel

More detailed instructions as well as other ways and options that you have can be found in the product documentation:

GoLand 2025.2

Inspection Details
By default bundled with:	GoLand 2025.2, Qodana for Go 2025.2,
Can be installed with plugin:	Go, 252.26654.0

Last modified: 18 September 2025