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[GOOGLE] Avoid emitting duplicated weakref
- From: Dehao Chen <dehao at google dot com>
- To: GCC Patches <gcc-patches at gcc dot gnu dot org>
- Cc: David Li <davidxl at google dot com>
- Date: Sat, 8 Jun 2013 20:29:50 -0700
- Subject: [GOOGLE] Avoid emitting duplicated weakref
This patch fixes a bug when two weakref symbols are mapped to a same
assembler name.
Testing on going.
OK for google branches if test is fine?
Thanks,
Dehao
Index: gcc/varasm.c
===================================================================
--- gcc/varasm.c (revision 199844)
+++ gcc/varasm.c (working copy)
@@ -5502,6 +5502,10 @@ do_assemble_alias (tree decl, tree target)
if (TREE_ASM_WRITTEN (decl))
return;
+ if (lookup_attribute ("weakref", DECL_ATTRIBUTES (decl))
+ && TREE_ASM_WRITTEN (DECL_ASSEMBLER_NAME (decl)))
+ return;
+
/* We must force creation of DECL_RTL for debug info generation, even though
we don't use it here. */
make_decl_rtl (decl);