Add staticcheck tool

vendor/honnef.co/go/tools/staticcheck/sa2002/sa2002.go

@@ -0,0 +1,93 @@
+package sa2002
+
+import (
+	"fmt"
+	"go/types"
+
+	"honnef.co/go/tools/analysis/lint"
+	"honnef.co/go/tools/analysis/report"
+	"honnef.co/go/tools/go/ir"
+	"honnef.co/go/tools/go/types/typeutil"
+	"honnef.co/go/tools/internal/passes/buildir"
+
+	"golang.org/x/tools/go/analysis"
+)
+
+var SCAnalyzer = lint.InitializeAnalyzer(&lint.Analyzer{
+	Analyzer: &analysis.Analyzer{
+		Name:     "SA2002",
+		Run:      run,
+		Requires: []*analysis.Analyzer{buildir.Analyzer},
+	},
+	Doc: &lint.RawDocumentation{
+		Title:    `Called \'testing.T.FailNow\' or \'SkipNow\' in a goroutine, which isn't allowed`,
+		Since:    "2017.1",
+		Severity: lint.SeverityError,
+		MergeIf:  lint.MergeIfAny,
+	},
+})
+
+var Analyzer = SCAnalyzer.Analyzer
+
+func run(pass *analysis.Pass) (any, error) {
+	for _, fn := range pass.ResultOf[buildir.Analyzer].(*buildir.IR).SrcFuncs {
+		for _, block := range fn.Blocks {
+			for _, ins := range block.Instrs {
+				gostmt, ok := ins.(*ir.Go)
+				if !ok {
+					continue
+				}
+				var fn *ir.Function
+				switch val := gostmt.Call.Value.(type) {
+				case *ir.Function:
+					fn = val
+				case *ir.MakeClosure:
+					fn = val.Fn.(*ir.Function)
+				default:
+					continue
+				}
+				if fn.Blocks == nil {
+					continue
+				}
+				for _, block := range fn.Blocks {
+					for _, ins := range block.Instrs {
+						call, ok := ins.(*ir.Call)
+						if !ok {
+							continue
+						}
+						if call.Call.IsInvoke() {
+							continue
+						}
+						callee := call.Call.StaticCallee()
+						if callee == nil {
+							continue
+						}
+						recv := callee.Signature.Recv()
+						if recv == nil {
+							continue
+						}
+						if !typeutil.IsPointerToTypeWithName(recv.Type(), "testing.common") {
+							continue
+						}
+						fn, ok := call.Call.StaticCallee().Object().(*types.Func)
+						if !ok {
+							continue
+						}
+						name := fn.Name()
+						switch name {
+						case "FailNow", "Fatal", "Fatalf", "SkipNow", "Skip", "Skipf":
+						default:
+							continue
+						}
+						// TODO(dh): don't report multiple diagnostics
+						// for multiple calls to T.Fatal, but do
+						// collect all of them as related information
+						report.Report(pass, gostmt, fmt.Sprintf("the goroutine calls T.%s, which must be called in the same goroutine as the test", name),
+							report.Related(call, fmt.Sprintf("call to T.%s", name)))
+					}
+				}
+			}
+		}
+	}
+	return nil, nil
+}