From b6d0b3dfaf5de60d9afacd18fcc9292973d1023a Mon Sep 17 00:00:00 2001
From: Nobuyoshi Nakada <nobu@ruby-lang.org>
Date: Sun, 25 Oct 2020 22:09:56 +0900
Subject: [PATCH] Use gcc-specific pragma only on gcc (and the family)

---
 spec/ruby/optional/capi/ext/thread_spec.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/spec/ruby/optional/capi/ext/thread_spec.c b/spec/ruby/optional/capi/ext/thread_spec.c
index 11379bbf2f..d69c463ef4 100644
--- a/spec/ruby/optional/capi/ext/thread_spec.c
+++ b/spec/ruby/optional/capi/ext/thread_spec.c
@@ -19,7 +19,9 @@ static VALUE thread_spec_rb_thread_alone(VALUE self) {
   return rb_thread_alone() ? Qtrue : Qfalse;
 }
 
+#if defined(__GNUC__)
 #pragma GCC diagnostic ignored "-Wdeprecated-declarations"
+#endif
 
 /* This is unblocked by unblock_func(). */
 static void* blocking_gvl_func(void* data) {