Merge commit 'origin/master' into fedora/master

Conflicts:
	ChangeLog
	sysdeps/unix/sysv/linux/i386/sysconf.c
	sysdeps/x86_64/cacheinfo.c
	version.h

4 files changed, 122 insertions, 2 deletions

diff --git a/debug/Makefile b/debug/Makefile
index ece7ee6bd7..181169b90d 100644
--- a/debug/Makefile
+++ b/debug/Makefile
@@ -1,4 +1,4 @@
-# Copyright (C) 1998-2001,2004-2008 Free Software Foundation, Inc.
+# Copyright (C) 1998-2001,2004-2008, 2009 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
@@ -43,6 +43,7 @@ routines  = backtrace backtracesyms backtracesymsfd noophooks \
 	    wcsnrtombs_chk mbsrtowcs_chk wcsrtombs_chk mbstowcs_chk \
 	    wcstombs_chk asprintf_chk vasprintf_chk dprintf_chk \
 	    vdprintf_chk obprintf_chk \
+	    longjmp_chk ____longjmp_chk \
 	    stack_chk_fail fortify_fail \
 	    $(static-only-routines)
 static-only-routines := warning-nop stack_chk_fail_local
@@ -79,6 +80,8 @@ CFLAGS-pread_chk.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-pread64_chk.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-recv_chk.c = -fexceptions -fasynchronous-unwind-tables
 CFLAGS-recvfrom_chk.c = -fexceptions -fasynchronous-unwind-tables
+CFLAGS-tst-longjmp_chk.c = -fexceptions -fasynchronous-unwind-tables \
+			   -D_FORTIFY_SOURCE=1
 
 # We know these tests have problems with format strings, this is what
 # we are testing.  Disable that warning.
@@ -113,7 +116,7 @@ LDFLAGS-tst-lfschk4 = -lstdc++
 LDFLAGS-tst-lfschk5 = -lstdc++
 LDFLAGS-tst-lfschk6 = -lstdc++
 
-tests = backtrace-tst tst-chk1 tst-chk2 tst-chk3 \
+tests = backtrace-tst tst-longjmp_chk tst-chk1 tst-chk2 tst-chk3 \
 	tst-lfschk1 tst-lfschk2 tst-lfschk3 test-strcpy_chk test-stpcpy_chk \
 	tst-chk4 tst-chk5 tst-chk6 tst-lfschk4 tst-lfschk5 tst-lfschk6
 
diff --git a/debug/Versions b/debug/Versions
index ef6b08b7b3..ff40107b77 100644
--- a/debug/Versions
+++ b/debug/Versions
@@ -46,6 +46,9 @@ libc {
     __asprintf_chk; __vasprintf_chk;  __dprintf_chk; __vdprintf_chk;
     __obstack_printf_chk; __obstack_vprintf_chk;
   }
+  GLIBC_2.11 {
+    __longjmp_chk;
+  }
   GLIBC_PRIVATE {
     __fortify_fail;
   }
diff --git a/debug/longjmp_chk.c b/debug/longjmp_chk.c
new file mode 100644
index 0000000000..7de2a98a30
--- /dev/null
+++ b/debug/longjmp_chk.c
@@ -0,0 +1,28 @@
+/* Copyright (C) 2009 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 <setjmp.h>
+
+// XXX Should move to include/setjmp.h
+extern void ____longjmp_chk (__jmp_buf __env, int __val)
+     __attribute__ ((__noreturn__));
+
+#define __longjmp ____longjmp_chk
+#define __libc_siglongjmp __longjmp_chk
+
+#include <setjmp/longjmp.c>
diff --git a/debug/tst-longjmp_chk.c b/debug/tst-longjmp_chk.c
new file mode 100644
index 0000000000..8892974cc7
--- /dev/null
+++ b/debug/tst-longjmp_chk.c
@@ -0,0 +1,86 @@
+#include <errno.h>
+#include <fcntl.h>
+#include <paths.h>
+#include <setjmp.h>
+#include <signal.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+
+static jmp_buf b;
+
+
+static void
+__attribute__ ((noinline))
+f (void)
+{
+  char buf[1000];
+  asm volatile ("" : "=m" (buf));
+
+  if (setjmp (b) != 0)
+    {
+      puts ("second longjmp succeeded");
+      exit (1);
+    }
+}
+
+
+static bool expected_to_fail;
+
+
+static void
+handler (int sig)
+{
+  if (expected_to_fail)
+    _exit (0);
+  else
+    {
+      static const char msg[] = "unexpected longjmp failure\n";
+      TEMP_FAILURE_RETRY (write (STDOUT_FILENO, msg, sizeof (msg) - 1));
+      _exit (1);
+    }
+}
+
+
+int
+main (void)
+{
+  struct sigaction sa;
+  sa.sa_handler = handler;
+  sa.sa_flags = 0;
+  sigemptyset (&sa.sa_mask);
+
+  sigaction (SIGABRT, &sa, NULL);
+
+  /* Avoid all the buffer overflow messages on stderr.  */
+  int fd = open (_PATH_DEVNULL, O_WRONLY);
+  if (fd == -1)
+    close (STDERR_FILENO);
+  else
+    {
+      dup2 (fd, STDERR_FILENO);
+      close (fd);
+    }
+  setenv ("LIBC_FATAL_STDERR_", "1", 1);
+
+
+  expected_to_fail = false;
+
+  if (setjmp (b) == 0)
+    {
+      longjmp (b, 1);
+      /* NOTREACHED */
+      printf ("first longjmp returned\n");
+      return 1;
+    }
+
+
+  expected_to_fail = true;
+
+  f ();
+  longjmp (b, 1);
+
+  puts ("second longjmp returned");
+  return 1;
+}