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-rw-r--r--sysdeps/unix/sysv/linux/waitid.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/waitid.c b/sysdeps/unix/sysv/linux/waitid.c
index 207c3d3453..71d5d3aa10 100644
--- a/sysdeps/unix/sysv/linux/waitid.c
+++ b/sysdeps/unix/sysv/linux/waitid.c
@@ -17,6 +17,7 @@
    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA.  */
 
+#include <stddef.h>
 #include <errno.h>
 #include <sys/wait.h>
 #include <kernel-features.h>