From d8feaca7c8568149ee43b28bd582d56b8fe61981 Mon Sep 17 00:00:00 2001
From: "H.J. Lu" <hjl.tools@gmail.com>
Date: Fri, 6 Mar 2015 04:55:56 -0800
Subject: [PATCH] Replace __attribute__((visibility("protected")))

With copy relocation, address of protected data defined in the shared
library may be external.  Compiler shouldn't asssume protected data will
be local.  But due to

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248

__attribute__((visibility("protected"))) doesn't work correctly, we need
to use asm (".protected xxx") instead.

	* elf/ifuncdep2.c (global): Replace
	__attribute__((visibility("protected"))) with
	asm (".protected global").
	* elf/ifuncmod1.c (global): Likewise.
	* elf/ifuncmod5.c (global): Likewise.
---
 elf/ifuncdep2.c | 8 +++++++-
 elf/ifuncmod1.c | 8 +++++++-
 elf/ifuncmod5.c | 8 +++++++-
 3 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/elf/ifuncdep2.c b/elf/ifuncdep2.c
index 99d19263ae..6e66d318a6 100644
--- a/elf/ifuncdep2.c
+++ b/elf/ifuncdep2.c
@@ -2,7 +2,13 @@
 
 #include "ifunc-sel.h"
 
-int global __attribute__ ((visibility ("protected"))) = -1;
+int global = -1;
+/* Can't use __attribute__((visibility("protected"))) until the GCC bug:
+
+   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
+
+   is fixed.  */
+asm (".protected global");
 
 static int
 one (void)
diff --git a/elf/ifuncmod1.c b/elf/ifuncmod1.c
index 2b8195ce55..0b6138056d 100644
--- a/elf/ifuncmod1.c
+++ b/elf/ifuncmod1.c
@@ -6,7 +6,13 @@
  */
 #include "ifunc-sel.h"
 
-int global __attribute__ ((visibility ("protected"))) = -1;
+int global = -1;
+/* Can't use __attribute__((visibility("protected"))) until the GCC bug:
+
+   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
+
+   is fixed.  */
+asm (".protected global");
 
 static int
 one (void)
diff --git a/elf/ifuncmod5.c b/elf/ifuncmod5.c
index 9a08e8cf53..0e65a63691 100644
--- a/elf/ifuncmod5.c
+++ b/elf/ifuncmod5.c
@@ -1,7 +1,13 @@
 /* Test STT_GNU_IFUNC symbols without direct function call.  */
 #include "ifunc-sel.h"
 
-int global __attribute__ ((visibility ("protected"))) = -1;
+int global = -1;
+/* Can't use __attribute__((visibility("protected"))) until the GCC bug:
+
+   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
+
+   is fixed.  */
+asm (".protected global");
 
 static int
 one (void)
-- 
2.11.4.GIT