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commit e0ed2fb40a0e29c43cf60addc74741dab15f2e05
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Author: H.J. Lu <hjl.tools@gmail.com>
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Date: Fri Mar 6 04:55:56 2015 -0800
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Replace __attribute__((visibility("protected")))
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With copy relocation, address of protected data defined in the shared
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library may be external. Compiler shouldn't asssume protected data will
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be local. But due to
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
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__attribute__((visibility("protected"))) doesn't work correctly, we need
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to use asm (".protected xxx") instead.
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* elf/ifuncdep2.c (global): Replace
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__attribute__((visibility("protected"))) with
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asm (".protected global").
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* elf/ifuncmod1.c (global): Likewise.
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* elf/ifuncmod5.c (global): Likewise.
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Index: b/elf/ifuncdep2.c
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===================================================================
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--- a/elf/ifuncdep2.c
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+++ b/elf/ifuncdep2.c
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@@ -2,7 +2,13 @@
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#include "ifunc-sel.h"
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-int global __attribute__ ((visibility ("protected"))) = -1;
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+int global = -1;
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+/* Can't use __attribute__((visibility("protected"))) until the GCC bug:
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+
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+ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
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+
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+ is fixed. */
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+asm (".protected global");
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static int
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one (void)
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Index: b/elf/ifuncmod1.c
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===================================================================
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--- a/elf/ifuncmod1.c
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+++ b/elf/ifuncmod1.c
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@@ -6,7 +6,13 @@
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*/
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#include "ifunc-sel.h"
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-int global __attribute__ ((visibility ("protected"))) = -1;
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+int global = -1;
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+/* Can't use __attribute__((visibility("protected"))) until the GCC bug:
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+
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+ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
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+
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+ is fixed. */
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+asm (".protected global");
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static int
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one (void)
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Index: b/elf/ifuncmod5.c
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===================================================================
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--- a/elf/ifuncmod5.c
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+++ b/elf/ifuncmod5.c
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@@ -1,7 +1,13 @@
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/* Test STT_GNU_IFUNC symbols without direct function call. */
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#include "ifunc-sel.h"
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-int global __attribute__ ((visibility ("protected"))) = -1;
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+int global = -1;
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+/* Can't use __attribute__((visibility("protected"))) until the GCC bug:
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+
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+ https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65248
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+
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+ is fixed. */
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+asm (".protected global");
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static int
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one (void)
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