(__sigsetmask): Don't check int mask beyound its size.

diff --git a/sysdeps/posix/sigsetmask.c b/sysdeps/posix/sigsetmask.c
index 034719870d5d90325c507d7eeb229720a4cada5f..fbbdafa3c92055ef7fd84c2d6926533e67efc023 100644 (file)
--- a/sysdeps/posix/sigsetmask.c
+++ b/sysdeps/posix/sigsetmask.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1991, 1994, 1995, 1996 Free Software Foundation, Inc.
+/* Copyright (C) 1991, 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -34,7 +34,7 @@ __sigsetmask (int mask)
   else if (sizeof (unsigned long int) == sizeof (set))
     *(unsigned long int *) &set = (unsigned int) mask;
   else
-    for (sig = 1; sig < NSIG; ++sig)
+    for (sig = 1; sig < NSIG && sig <= sizeof (mask) * 8; ++sig)
       if ((mask & sigmask (sig)) && __sigaddset (&set, sig) < 0)
        return -1;
 
@@ -46,7 +46,7 @@ __sigsetmask (int mask)
   else if (sizeof (unsigned long int) == sizeof (oset))
     mask = *(unsigned long int *) &oset;
   else
-    for (sig = 1, mask = 0; sig < NSIG; ++sig)
+    for (sig = 1, mask = 0; sig < NSIG && sig <= sizeof (mask) * 8; ++sig)
       if (__sigismember (&oset, sig))
        mask |= sigmask (sig);