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-rw-r--r--include/ruby/3/attr/maybe_unused.h14
1 files changed, 6 insertions, 8 deletions
diff --git a/include/ruby/3/attr/maybe_unused.h b/include/ruby/3/attr/maybe_unused.h
index 29a8c35bfc..f814804e9f 100644
--- a/include/ruby/3/attr/maybe_unused.h
+++ b/include/ruby/3/attr/maybe_unused.h
@@ -1,4 +1,6 @@
-/** \noop-*-C++-*-vi:ft=cpp
+#ifndef RUBY3_ATTR_MAYBE_UNUSED_H /*-*-C++-*-vi:se ft=cpp:*/
+#define RUBY3_ATTR_MAYBE_UNUSED_H
+/**
* @file
* @author Ruby developers <ruby-core@ruby-lang.org>
* @copyright This file is a part of the programming language Ruby.
@@ -22,18 +24,14 @@
#include "ruby/3/has/cpp_attribute.h"
/** Wraps (or simulates) `[[maybe_unused]]` */
-#if defined(RUBY3_ATTR_MAYBE_UNUSED)
-# /* Take that. */
-
-#elif RUBY3_HAS_CPP_ATTRIBUTE(maybe_unused)
+#if RUBY3_HAS_CPP_ATTRIBUTE(maybe_unused)
# define RUBY3_ATTR_MAYBE_UNUSED() [[maybe_unused]]
-
#elif RUBY3_HAS_C_ATTRIBUTE(maybe_unused)
# define RUBY3_ATTR_MAYBE_UNUSED() [[maybe_unused]]
-
#elif RUBY3_HAS_ATTRIBUTE(unused)
# define RUBY3_ATTR_MAYBE_UNUSED() __attribute__((__unused__))
-
#else
# define RUBY3_ATTR_MAYBE_UNUSED() /* void */
#endif
+
+#endif /* RUBY3_ATTR_MAYBE_UNUSED */