use a common definition of NULL as 0L for C and C++

[musl] / include / unistd.h

diff --git a/include/unistd.h b/include/unistd.h
index 89015ad..07e49e9 100644 (file)
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -15,12 +15,7 @@ extern "C" {
 #define SEEK_CUR 1
 #define SEEK_END 2
 
-#undef NULL
-#ifdef __cplusplus
-#define NULL 0
-#else
-#define NULL ((void*)0)
-#endif
+#define NULL 0L
 
 #define __NEED_size_t
 #define __NEED_ssize_t