Call WaitGroup.Add before launching the goroutine

#Metadata

Rule ID

go.correctness.waitgroup-add-in-goroutine

Severity

high

Confidence

0.88

Languages

go

Presets

strict

Stability

stable

Applies to

block

Tags

concurrency, correctness, go, rules-catalog

#Why it matters

`sync.WaitGroup.Add` must happen before the launching goroutine returns to the caller. If `Add` runs inside the goroutine, `Wait` may observe a zero counter and return before the work begins.

#Remediation

Call `wg.Add(n)` on the launching goroutine before the `go` statement starts the worker.

#Repository path

The generated metadata points to critiq-rules/libs/rules/catalog/rules/go/go.correctness.waitgroup-add-in-goroutine.rule.yaml.