X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fsystemd%2F_sd-common.h;h=896a027eb5027a32f1d28a629455518fce60b3d6;hp=b0c48aab9b2e7ff2ba6cd38548cf7abf3d8614b3;hb=0c21638b669b02a8810d92ba9d4ec113fa8ffa9d;hpb=0095c45415ad24338342369d76d5635088294eae

diff --git a/src/systemd/_sd-common.h b/src/systemd/_sd-common.h
index b0c48aab9..896a027eb 100644
--- a/src/systemd/_sd-common.h
+++ b/src/systemd/_sd-common.h
@@ -22,7 +22,11 @@
   along with systemd; If not, see <http://www.gnu.org/licenses/>.
 ***/
 
-/* This is a private header, never even think of including this directly! */
+/* This is a private header; never even think of including this directly! */
+
+#if __INCLUDE_LEVEL__ <= 1
+#error "Do not include _sd-common.h directly; it is a private header."
+#endif
 
 #ifndef _sd_printf_
 #  if __GNUC__ >= 4
@@ -40,6 +44,10 @@
 #  define _sd_packed_ __attribute__((packed))
 #endif
 
+#ifndef _sd_pure_
+#  define _sd_pure_ __attribute__((pure))
+#endif
+
 #ifndef _SD_STRINGIFY
 #  define _SD_XSTRINGIFY(x) #x
 #  define _SD_STRINGIFY(x) _SD_XSTRINGIFY(x)