--- /dev/null
+package pkg
+
+import (
+ "sync"
+)
+
+func fn() {
+ wg := sync.WaitGroup{}
+ wg.Add(1)
+ go func() {
+ wg.Done()
+ }()
+
+ go func() {
+ wg.Add(1) // want `should call wg\.Add\(1\) before starting`
+ wg.Done()
+ }()
+
+ wg.Add(1)
+ go func(wg sync.WaitGroup) {
+ wg.Done()
+ }(wg)
+
+ wg.Add(1)
+ go func(wg *sync.WaitGroup) {
+ wg.Done()
+ }(&wg)
+
+ wg.Wait()
+}
+
+func fn2(wg sync.WaitGroup) {
+ wg.Add(1)
+}