linux/sigsetops: fix type confusion (bug 31468)

Each mask in the sigset array is an unsigned long, so fix __sigisemptyset
to use that instead of int.  The __sigword function returns a simple array
index, so it can return int instead of unsigned long.

1 files changed, 11 insertions, 0 deletions

diff --git a/signal/tst-sigisemptyset.c b/signal/tst-sigisemptyset.c
index f5e35e8c22..11e7f39d09 100644
--- a/signal/tst-sigisemptyset.c
+++ b/signal/tst-sigisemptyset.c
@@ -89,6 +89,17 @@ do_test (void)
     TEST_COMPARE (sigisemptyset (&set), 1);
   }
 
+  {
+    sigset_t set;
+    for (int sig = 1; sig <= NSIG; sig++)
+      {
+	sigemptyset (&set);
+	if (sigaddset (&set, sig) < 0)
+	  continue;
+	TEST_COMPARE (sigisemptyset (&set), 0);
+      }
+  }
+
   return 0;
 }