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-rw-r--r--common/align.h2
-rw-r--r--common/bool.h2
-rw-r--r--common/static_assert.h2
3 files changed, 3 insertions, 3 deletions
diff --git a/common/align.h b/common/align.h
index a5d8a20c..53a5806a 100644
--- a/common/align.h
+++ b/common/align.h
@@ -5,7 +5,7 @@
#include <stdalign.h>
#endif
-#ifndef alignas
+#if !defined(alignas) && !defined(__cplusplus)
#if defined(HAVE_C11_ALIGNAS)
#define alignas _Alignas
#else
diff --git a/common/bool.h b/common/bool.h
index dbb28e15..eb1d9174 100644
--- a/common/bool.h
+++ b/common/bool.h
@@ -5,7 +5,7 @@
#include <stdbool.h>
#endif
-#if !defined(__cplusplus) && !defined(bool)
+#if !defined(bool) && !defined(__cplusplus)
#ifdef HAVE_C99_BOOL
#define bool _Bool
#else
diff --git a/common/static_assert.h b/common/static_assert.h
index bf0ce065..3a554fb5 100644
--- a/common/static_assert.h
+++ b/common/static_assert.h
@@ -4,7 +4,7 @@
#include <assert.h>
-#ifndef static_assert
+#if !defined(static_assert) && !defined(__cplusplus)
#ifdef HAVE_C11_STATIC_ASSERT
#define static_assert _Static_assert
#else