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| author | Felix Fietkau <nbd@openwrt.org> | 2014-07-10 19:28:40 +0000 |
|---|---|---|
| committer | Felix Fietkau <nbd@openwrt.org> | 2014-07-10 19:28:40 +0000 |
| commit | a44b4e3ffb2a35cc83871c46d8b45327e5abc91c (patch) | |
| tree | dc0a9895b26e00d4d427a3e29acd14e21bf20a12 /toolchain | |
| parent | 7b0ec8a5dba7da95294237d327815ca3f730e363 (diff) | |
| download | mtk-20170518-a44b4e3ffb2a35cc83871c46d8b45327e5abc91c.zip mtk-20170518-a44b4e3ffb2a35cc83871c46d8b45327e5abc91c.tar.gz mtk-20170518-a44b4e3ffb2a35cc83871c46d8b45327e5abc91c.tar.bz2 | |
gcc: backport a fix for issues with accessing weak data references
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 41569
Diffstat (limited to 'toolchain')
| -rw-r--r-- | toolchain/gcc/patches/4.8-linaro/002-weak_data_fix.patch | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/toolchain/gcc/patches/4.8-linaro/002-weak_data_fix.patch b/toolchain/gcc/patches/4.8-linaro/002-weak_data_fix.patch new file mode 100644 index 0000000..a740b4c --- /dev/null +++ b/toolchain/gcc/patches/4.8-linaro/002-weak_data_fix.patch @@ -0,0 +1,42 @@ +--- /dev/null ++++ b/gcc/testsuite/gcc.dg/visibility-21.c +@@ -0,0 +1,14 @@ ++/* PR target/32219 */ ++/* { dg-do run } */ ++/* { dg-require-visibility "" } */ ++/* { dg-options "-fPIC" { target fpic } } */ ++ ++extern void f() __attribute__((weak,visibility("hidden"))); ++extern int puts( char const* ); ++int main() ++{ ++ if (f) ++ f(); ++ return 0; ++} ++ +--- a/gcc/varasm.c ++++ b/gcc/varasm.c +@@ -6677,6 +6677,10 @@ default_binds_local_p_1 (const_tree exp, + /* Static variables are always local. */ + else if (! TREE_PUBLIC (exp)) + local_p = true; ++ /* hidden weak can't be overridden by something non-local, all ++ that is possible is that it is not defined at all. */ ++ else if (DECL_WEAK (exp)) ++ local_p = false; + /* A variable is local if the user has said explicitly that it will + be. */ + else if ((DECL_VISIBILITY_SPECIFIED (exp) +@@ -6690,11 +6694,6 @@ default_binds_local_p_1 (const_tree exp, + local. */ + else if (DECL_VISIBILITY (exp) != VISIBILITY_DEFAULT) + local_p = true; +- /* Default visibility weak data can be overridden by a strong symbol +- in another module and so are not local. */ +- else if (DECL_WEAK (exp) +- && !resolved_locally) +- local_p = false; + /* If PIC, then assume that any global name can be overridden by + symbols resolved from other modules. */ + else if (shlib) |