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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 | 752fdaeb911e28d139baf4f04f019cf56e6cb7e9 (patch) | |
| tree | c7d318bbddba47d86b110255c8178dc73586c283 /toolchain | |
| parent | 34711f941c4a212e3bdf3b993ff6bfe1d21e4594 (diff) | |
| download | upstream-752fdaeb911e28d139baf4f04f019cf56e6cb7e9.tar.gz upstream-752fdaeb911e28d139baf4f04f019cf56e6cb7e9.tar.bz2 upstream-752fdaeb911e28d139baf4f04f019cf56e6cb7e9.zip | |
gcc: backport a fix for issues with accessing weak data references
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@41569 3c298f89-4303-0410-b956-a3cf2f4a3e73
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 0000000000..a740b4ce9e --- /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) |