1 files changed, 7 insertions, 1 deletions
diff --git a/nptl/descr.h b/nptl/descr.h
index 6a509b6725..d8343ff9a1 100644
--- a/nptl/descr.h
+++ b/nptl/descr.h
@@ -95,7 +95,13 @@ struct pthread_unwind_buf
 struct xid_command
 {
   int syscall_no;
-  long int id[3];
+  /* Enforce zero-extension for the pointer argument in
+
+     int setgroups (size_t size, const gid_t *list);
+
+     The kernel XID arguments are unsigned and do not require sign
+     extension.  */
+  unsigned long int id[3];
   volatile int cntr;
   volatile int error; /* -1: no call yet, 0: success seen, >0: error seen.  */
 };