Sigpause was broken. Now it is fixed.

 -Erik

libc/signal/sigpause.c

@@ -1,37 +1,65 @@
-/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
-This file is part of the GNU C Library.
+/* Copyright (C) 1991, 92, 1994-1998, 2000 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
-modify it under the terms of the GNU Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
 
-The GNU C Library is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-Library General Public License for more details.
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
 
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB.  If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA.  */
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
 
 #include <errno.h>
 #include <signal.h>
-
-#undef sigpause
+#include <stddef.h>		/* For NULL.  */
 
 /* Set the mask of blocked signals to MASK,
    wait for a signal to arrive, and then restore the mask.  */
-int sigpause(int mask)
+int __sigpause (int sig_or_mask, int is_sig)
 {
   sigset_t set;
   int sig;
 
-  sigemptyset(&set);
-  for (sig = 1; sig < NSIG; ++sig)
-    if (mask & sigmask(sig))
-      sigaddset(&set, sig);
+  if (is_sig != 0)
+    {
+      /* The modern X/Open implementation is requested.  */
+      if (sigprocmask (0, NULL, &set) < 0
+	  /* Yes, we call `sigdelset' and not `__sigdelset'.  */
+	  || sigdelset (&set, sig_or_mask) < 0)
+	return -1;
+    }
+  else
+    {
+      if (sigemptyset (&set) < 0)
+	return -1;
+
+      if (sizeof (sig_or_mask) == sizeof (set))
+	*(int *) &set = sig_or_mask;
+      else if (sizeof (unsigned long int) == sizeof (set))
+	*(unsigned long int *) &set = (unsigned int) sig_or_mask;
+      else
+	for (sig = 1; sig < NSIG; ++sig)
+	  if ((sig_or_mask & sigmask (sig)) && __sigaddset (&set, sig) < 0)
+	    return -1;
+    }
 
   return sigsuspend (&set);
 }
+
+
+#undef sigpause
+
+/* We have to provide a default version of this function since the
+   standards demand it.  The version which is a bit more reasonable is
+   the BSD version.  So make this the default.  */
+int sigpause (int mask)
+{
+  return __sigpause (mask, 0);
+}