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'defer' in the loop

Reports defer statements inside loops.

Using defer in loops can lead to resource leaks or unpredictable execution order of statements.

Example:

func main() { for { field, err := db.Query("SELECT 1") if err != nil { // ... } defer field.Close() // ... } }

Calls of defer row.Close() inside the loop are not executed until the function completes its execution. Not at the end of each step of the for loop. Such implementation might lead to overflow of the function's stack and other issues.

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.

GoDeferInLoop
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 | Control flow issues

Availability

By default bundled with

GoLand 2024.1, Qodana for Go 2024.1,

Can be installed with plugin

Go, 241.SNAPSHOT

Last modified: 18 June 2024