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-rw-r--r--include/locale.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/locale.h b/include/locale.h
index 7e80fd93..ce384381 100644
--- a/include/locale.h
+++ b/include/locale.h
@@ -7,7 +7,11 @@ extern "C" {
 
 #include <features.h>
 
+#ifdef __cplusplus
 #define NULL 0L
+#else
+#define NULL ((void*)0)
+#endif
 
 #define LC_CTYPE    0
 #define LC_NUMERIC  1