cl: compileFuncDecl/funcName fix; patch library: sync

cl/_testlibgo/sync/in.go

@@ -0,0 +1,18 @@
+package main
+
+import (
+	"sync"
+)
+
+var once sync.Once
+
+func f(s string) {
+	once.Do(func() {
+		println(s)
+	})
+}
+
+func main() {
+	f("Do once")
+	f("Do twice")
+}

cl/compile.go

@@ -279,6 +279,9 @@ func (p *context) compileFuncDecl(pkg llssa.Package, f *ssa.Function) (llssa.Fun
 			}
 			b.EndBuild()
 		})
+		for _, af := range f.AnonFuncs {
+			p.compileFuncDecl(pkg, af)
+		}
 	}
 	return fn, nil, goFunc
 }

cl/import.go

@@ -336,8 +336,14 @@ func typesFuncName(pkgPath string, fn *types.Func) (fullName, inPkgName string)
 // - func: pkg.name
 // - method: pkg.(T).name, pkg.(*T).name
 func funcName(pkg *types.Package, fn *ssa.Function) string {
-	sig := fn.Signature
-	return llssa.FuncName(pkg, fn.Name(), sig.Recv())
+	var recv *types.Var
+	parent := fn.Parent()
+	if parent != nil { // closure in method
+		recv = parent.Signature.Recv()
+	} else {
+		recv = fn.Signature.Recv()
+	}
+	return llssa.FuncName(pkg, fn.Name(), recv)
 }
 
 func checkCgo(fnName string) bool {