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From: Konstantin Belousov <kib@FreeBSD.org>
Date: Tue, 7 Sep 2010 12:06:41 +0000 (UTC)
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Subject: svn commit: r212290 - stable/8/lib/libc/sys
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Author: kib
Date: Tue Sep  7 12:06:41 2010
New Revision: 212290
URL: http://svn.freebsd.org/changeset/base/212290

Log:
  MFC r211748:
  Move the __stack_chk_fail_local@FBSD_1.0 compat symbol definition into
  the separate .o for libc_pic.a. This prevents rtld from making the
  symbol global.

Added:
  stable/8/lib/libc/sys/stack_protector_compat.c
     - copied unchanged from r211748, head/lib/libc/sys/stack_protector_compat.c
Modified:
  stable/8/lib/libc/sys/Makefile.inc
  stable/8/lib/libc/sys/stack_protector.c
Directory Properties:
  stable/8/lib/libc/   (props changed)
  stable/8/lib/libc/locale/   (props changed)
  stable/8/lib/libc/stdtime/   (props changed)
  stable/8/lib/libc/sys/   (props changed)

Modified: stable/8/lib/libc/sys/Makefile.inc
==============================================================================
--- stable/8/lib/libc/sys/Makefile.inc	Tue Sep  7 12:04:07 2010	(r212289)
+++ stable/8/lib/libc/sys/Makefile.inc	Tue Sep  7 12:06:41 2010	(r212290)
@@ -18,7 +18,7 @@
 .endif
 
 # Sources common to both syscall interfaces:
-SRCS+=	stack_protector.c __error.c
+SRCS+=	stack_protector.c stack_protector_compat.c __error.c
 .if !defined(WITHOUT_SYSCALL_COMPAT)
 SRCS+=	fcntl.c ftruncate.c lseek.c mmap.c pread.c pwrite.c truncate.c
 PSEUDO+= _fcntl.o

Modified: stable/8/lib/libc/sys/stack_protector.c
==============================================================================
--- stable/8/lib/libc/sys/stack_protector.c	Tue Sep  7 12:04:07 2010	(r212289)
+++ stable/8/lib/libc/sys/stack_protector.c	Tue Sep  7 12:06:41 2010	(r212290)
@@ -107,8 +107,6 @@ __chk_fail(void)
 	__fail("buffer overflow detected; terminated");
 }
 
-#ifdef PIC
-__sym_compat(__stack_chk_fail_local, __stack_chk_fail, FBSD_1.0);
-#else
+#ifndef PIC
 __weak_reference(__stack_chk_fail, __stack_chk_fail_local);
 #endif

Copied: stable/8/lib/libc/sys/stack_protector_compat.c (from r211748, head/lib/libc/sys/stack_protector_compat.c)
==============================================================================
--- /dev/null	00:00:00 1970	(empty, because file is newly added)
+++ stable/8/lib/libc/sys/stack_protector_compat.c	Tue Sep  7 12:06:41 2010	(r212290, copy of r211748, head/lib/libc/sys/stack_protector_compat.c)
@@ -0,0 +1,20 @@
+/*
+ * Written by Alexander Kabaev <kan@FreeBSD.org>
+ * The file is in public domain.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+void __stack_chk_fail(void);
+
+#ifdef PIC
+void
+__stack_chk_fail_local_hidden(void)
+{
+
+	__stack_chk_fail();
+}
+
+__sym_compat(__stack_chk_fail_local, __stack_chk_fail_local_hidden, FBSD_1.0);
+#endif