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| author | H.J. Lu <hjl.tools@gmail.com> | 2015-03-06 04:55:56 -0800 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2015-03-31 17:25:36 -0700 |
| commit | 3350e1867c0b82957093fa9e1c52a5f841881377 (patch) | |
| tree | c7967342a4c50a2f18243115851e17436bcd4b25 | |
| parent | a0f66d616575074b0f569da3f561fa0fe09fa312 (diff) | |
| download | glibc-3350e1867c0b82957093fa9e1c52a5f841881377.zip glibc-3350e1867c0b82957093fa9e1c52a5f841881377.tar.gz glibc-3350e1867c0b82957093fa9e1c52a5f841881377.tar.bz2 | |
Replace __attribute__((visibility("protected")))hjl/pr17711/2.18
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.
Cherry-pick from master: e0ed2fb40a0e29c43cf60addc74741dab15f2e05
* elf/ifuncdep2.c (global): Replace
__attribute__((visibility("protected"))) with
asm (".protected global").
* elf/ifuncmod1.c (global): Likewise.
* elf/ifuncmod5.c (global): Likewise.
| -rw-r--r-- | elf/ifuncdep2.c | 8 | ||||
| -rw-r--r-- | elf/ifuncmod1.c | 8 | ||||
| -rw-r--r-- | elf/ifuncmod5.c | 8 |
3 files changed, 21 insertions, 3 deletions
diff --git a/elf/ifuncdep2.c b/elf/ifuncdep2.c index 99d1926..6e66d31 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 2b8195c..0b61380 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 9a08e8c..0e65a63 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) |