tpl: check for too many arguments in apply

Fixes #1091

diff --git a/tpl/template_funcs.go b/tpl/template_funcs.go
index 4e07d8f395f70cd9c4ca10fdb6d7ffc819bc53db..9a446d094ab44e4341c286c101cfe6fb522c78c2 100644 (file)
--- a/tpl/template_funcs.go
+++ b/tpl/template_funcs.go
@@ -668,6 +668,8 @@ func applyFnToThis(fn, this reflect.Value, args ...interface{}) (reflect.Value,
 
        if len(args) < num {
                return reflect.ValueOf(nil), errors.New("Too few arguments")
+       } else if len(args) > num {
+               return reflect.ValueOf(nil), errors.New("Too many arguments")
        }
 
        res := fn.Call(n)

diff --git a/tpl/template_test.go b/tpl/template_test.go
index 87f3cac81676a56c115e70997cbcd1404c65bd51..c7cd20f55258467d784887b3d63b5728836f7ea9 100644 (file)
--- a/tpl/template_test.go
+++ b/tpl/template_test.go
@@ -15,7 +15,9 @@ func TestTplGoFuzzReports(t *testing.T) {
                // Issue #1089
                {"{{apply .C \"first\" }}", 2},
                // Issue #1090
-               {"{{ slicestr \"000000\" 10}}", 2}} {
+               {"{{ slicestr \"000000\" 10}}", 2},
+               // Issue #1091
+               {"{{apply .C \"first\" 0 0 0}}", 2}} {
                templ := New()
 
                d := &Data{