Add staticcheck tool

vendor/honnef.co/go/tools/staticcheck/sa2000/sa2000.go

@@ -0,0 +1,44 @@
+package sa2000
+
+import (
+	"fmt"
+	"go/ast"
+
+	"honnef.co/go/tools/analysis/code"
+	"honnef.co/go/tools/analysis/lint"
+	"honnef.co/go/tools/analysis/report"
+	"honnef.co/go/tools/pattern"
+
+	"golang.org/x/tools/go/analysis"
+)
+
+var SCAnalyzer = lint.InitializeAnalyzer(&lint.Analyzer{
+	Analyzer: &analysis.Analyzer{
+		Name:     "SA2000",
+		Run:      run,
+		Requires: code.RequiredAnalyzers,
+	},
+	Doc: &lint.RawDocumentation{
+		Title:    `\'sync.WaitGroup.Add\' called inside the goroutine, leading to a race condition`,
+		Since:    "2017.1",
+		Severity: lint.SeverityWarning,
+		MergeIf:  lint.MergeIfAny,
+	},
+})
+
+var Analyzer = SCAnalyzer.Analyzer
+
+var checkWaitgroupAddQ = pattern.MustParse(`
+	(GoStmt
+		(CallExpr
+			(FuncLit
+				_
+				call@(CallExpr (Symbol "(*sync.WaitGroup).Add") _):_) _))`)
+
+func run(pass *analysis.Pass) (any, error) {
+	for _, m := range code.Matches(pass, checkWaitgroupAddQ) {
+		call := m.State["call"].(ast.Node)
+		report.Report(pass, call, fmt.Sprintf("should call %s before starting the goroutine to avoid a race", report.Render(pass, call)))
+	}
+	return nil, nil
+}