From 48fb6299c6ad4fe970c05c5e30a0f6284d771164 Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sun, 28 Jun 2020 10:34:01 +0900
Subject: [ruby/fiddle] support for very old libffi

Define `Fiddle::TYPE_VARIADIC` only when `ffi_prep_cif_var` is
available, otherwise skip the test for it.
---
 test/fiddle/test_func.rb | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'test/fiddle')

diff --git a/test/fiddle/test_func.rb b/test/fiddle/test_func.rb
index cf71a4b123..29a0a455f1 100644
--- a/test/fiddle/test_func.rb
+++ b/test/fiddle/test_func.rb
@@ -81,6 +81,9 @@ module Fiddle
     end
 
     def test_snprintf
+      unless Fiddle.const_defined?("TYPE_VARIADIC")
+        skip "libffi doesn't support variadic arguments"
+      end
       if Fiddle::WINDOWS
         snprintf_name = "_snprintf"
       else
-- 
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