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-rw-r--r--include/mruby.h12
1 files changed, 8 insertions, 4 deletions
diff --git a/include/mruby.h b/include/mruby.h
index 8625d4521..1ca87b390 100644
--- a/include/mruby.h
+++ b/include/mruby.h
@@ -62,12 +62,16 @@
#define mrb_assert_int_fit(t1,n,t2,max) ((void)0)
#endif
-#if (defined __STDC_VERSION__ && __STDC_VERSION__ >= 201112L) || \
- (defined __cplusplus && __cplusplus >= 201103L)
-# include <assert.h>
+#if (defined __cplusplus && __cplusplus >= 201103L) || \
+ (defined _WIN32 && !defined __MINGW32__) || \
+ (defined __GXX_EXPERIMENTAL_CXX0X__) /* for old G++/Clang++ */
# define mrb_static_assert(exp, str) static_assert(exp, str)
+#elif defined __STDC_VERSION__ && \
+ ((__STDC_VERSION__ >= 201112L) || \
+ (defined __GNUC__ && __GNUC__ * 100 + __GNUC_MINOR__ >= 406))
+# define mrb_static_assert(exp, str) _Static_assert(exp, str)
#else
-/* C version of static_assert() */
+# /* alternative implementation of static_assert() */
# define _mrb_static_assert_cat0(a, b) a##b
# define _mrb_static_assert_cat(a, b) _mrb_static_assert_cat0(a, b)
# ifdef __COUNTER__