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-rw-r--r--include/regex.h6
1 files changed, 1 insertions, 5 deletions
diff --git a/include/regex.h b/include/regex.h
index b7167b87..2eac1ebf 100644
--- a/include/regex.h
+++ b/include/regex.h
@@ -5,11 +5,7 @@
 extern "C" {
 #endif
 
-#if __STDC_VERSION__ >= 199901L
-#define __restrict restrict
-#elif !defined(__GNUC__)
-#define __restrict
-#endif
+#include <features.h>
 
 #define __NEED_size_t