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-rw-r--r--include/xlocale/_ctype.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/xlocale/_ctype.h b/include/xlocale/_ctype.h
index 7ffa7a1..b048c55 100644
--- a/include/xlocale/_ctype.h
+++ b/include/xlocale/_ctype.h
@@ -53,7 +53,7 @@ _RuneLocale *__runes_for_locale(locale_t, int*);
#endif
#ifndef _XLOCALE_INLINE
-#if __GNUC__ && !__GNUC_STDC_INLINE__
+#if defined(__GNUC__) && !defined(__GNUC_STDC_INLINE__)
/* GNU89 inline has nonstandard semantics. */
#define _XLOCALE_INLINE extern __inline
#else
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