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Diffstat (limited to 'include/ruby/3/attr/noalias.h')
-rw-r--r--include/ruby/3/attr/noalias.h12
1 files changed, 6 insertions, 6 deletions
diff --git a/include/ruby/3/attr/noalias.h b/include/ruby/3/attr/noalias.h
index c15f1480cb..49ad11999d 100644
--- a/include/ruby/3/attr/noalias.h
+++ b/include/ruby/3/attr/noalias.h
@@ -1,4 +1,6 @@
-/** \noop-*-C++-*-vi:ft=cpp
+#ifndef RUBY3_ATTR_NOALIAS_H /*-*-C++-*-vi:se ft=cpp:*/
+#define RUBY3_ATTR_NOALIAS_H
+/**
* @file
* @author Ruby developers <ruby-core@ruby-lang.org>
* @copyright This file is a part of the programming language Ruby.
@@ -47,12 +49,10 @@
#include "ruby/3/has/declspec_attribute.h"
/** Wraps (or simulates) `__declspec((noalias))` */
-#if defined(RUBY3_ATTR_NOALIAS)
-# /* Take that. */
-
-#elif RUBY3_HAS_DECLSPEC_ATTRIBUTE(noalias)
+#if RUBY3_HAS_DECLSPEC_ATTRIBUTE(noalias)
# define RUBY3_ATTR_NOALIAS() __declspec(noalias)
-
#else
# define RUBY3_ATTR_NOALIAS() /* void */
#endif
+
+#endif /* RUBY3_ATTR_NOALIAS_H */