honnef.co/go/tools@v0.4.7/staticcheck/testdata/src/example.com/CheckDeferLock/CheckDeferLock.go (about)

     1  package pkg
     2  
     3  import "sync"
     4  
     5  var r sync.Mutex
     6  var rw sync.RWMutex
     7  
     8  func fn1() {
     9  	r.Lock()
    10  	defer r.Lock() //@ diag(`deferring Lock right after having locked already; did you mean to defer Unlock`)
    11  }
    12  
    13  func fn2() {
    14  	r.Lock()
    15  	defer r.Unlock()
    16  }
    17  
    18  func fn3() {
    19  	println("")
    20  	defer r.Lock()
    21  }
    22  
    23  func fn4() {
    24  	rw.RLock()
    25  	defer rw.RLock() //@ diag(`deferring RLock right after having locked already; did you mean to defer RUnlock`)
    26  }
    27  
    28  func fn5() {
    29  	rw.RLock()
    30  	defer rw.Lock()
    31  }
    32  
    33  func fn6() {
    34  	r.Lock()
    35  	defer rw.Lock()
    36  }