[BZ #4514]

	* stdio-common/vfprintf.c (vfprintf): Don't shadow workstart variable,
	reinitialize workend at the start of each do_positional format spec
	loop, free workstart before do_positional loops.
	(printf_unknown): Fix size of work_buffer.
	* stdio-common/tst-sprintf.c (main): Add 3 new testcases.

1 files changed, 69 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/linux/epoll_pwait.c b/sysdeps/unix/sysv/linux/epoll_pwait.c
new file mode 100644
index 0000000000..e689073d18
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/epoll_pwait.c
@@ -0,0 +1,69 @@
+/* Copyright (C) 2007 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 Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; 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>
+#include <unistd.h>
+#include <sys/epoll.h>
+
+#include <sysdep-cancel.h>
+#include <sys/syscall.h>
+
+#ifdef __NR_epoll_pwait
+
+/* Wait for events on an epoll instance "epfd". Returns the number of
+   triggered events returned in "events" buffer. Or -1 in case of
+   error with the "errno" variable set to the specific error code. The
+   "events" parameter is a buffer that will contain triggered
+   events. The "maxevents" is the maximum number of events to be
+   returned ( usually size of "events" ). The "timeout" parameter
+   specifies the maximum wait time in milliseconds (-1 == infinite).
+   The thread's signal mask is temporarily and atomically replaced with
+   the one provided as parameter.  */
+
+int epoll_pwait (int epfd, struct epoll_event *events,
+		 int maxevents, int timeout,
+		 const sigset_t *set)
+{
+  if (SINGLE_THREAD_P)
+    return INLINE_SYSCALL (epoll_pwait, 6, epfd, events, maxevents, timeout,
+			   set, _NSIG / 8);
+
+  int oldtype = LIBC_CANCEL_ASYNC ();
+
+  int result = INLINE_SYSCALL (epoll_pwait, 6, epfd, events, maxevents,
+			       timeout, set, _NSIG / 8);
+
+  LIBC_CANCEL_RESET (oldtype);
+
+  return result;
+}
+
+#else
+
+int epoll_pwait (int epfd, struct epoll_event *events,
+		 int maxevents, int timeout,
+		 const sigset_t *set)
+{
+  __set_errno (ENOSYS);
+  return -1;
+}
+stub_warning (epoll_pwait)
+
+# include <stub-tag.h>
+#endif