diff --git a/go/packages/packages.go b/go/packages/packages.go
index 050cca4..12ab1e5 100644
--- a/go/packages/packages.go
+++ b/go/packages/packages.go
@@ -713,7 +713,7 @@
 	// which would then require that such created packages be explicitly
 	// inserted back into the Import graph as a final step after export data loading.
 	// The Diamond test exercises this case.
-	if !lpkg.needtypes {
+	if !lpkg.needtypes && !lpkg.needsrc {
 		return
 	}
 	if !lpkg.needsrc {
diff --git a/go/packages/packages_test.go b/go/packages/packages_test.go
index 5d286e9..94bff03 100644
--- a/go/packages/packages_test.go
+++ b/go/packages/packages_test.go
@@ -2470,13 +2470,15 @@
 	if len(pkgs) != 1 {
 		t.Fatalf("Expected 1 package, got %v", pkgs)
 	}
-	pkg := pkgs[0]
-	if len(pkg.Errors) > 0 {
-		t.Fatalf("Expected no errors in package, got %v", pkg.Errors)
-	}
-	if len(pkg.Syntax) == 0 {
-		t.Fatalf("Expected syntax on package, got none.")
-	}
+	packages.Visit(pkgs, func(pkg *packages.Package) bool {
+		if len(pkg.Errors) > 0 {
+			t.Errorf("Expected no errors in package %q, got %v", pkg.ID, pkg.Errors)
+		}
+		if len(pkg.Syntax) == 0 && pkg.ID != "unsafe" {
+			t.Errorf("Expected syntax on package %q, got none.", pkg.ID)
+		}
+		return true
+	}, nil)
 }
 
 func TestLoadModeStrings(t *testing.T) {