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15305a736f
Make TREE_USED match the [basic.def.odr] concept for FUNCTION_DECL and VAR_DECL, so mark_used only has effect the first time. * decl2.c (mark_used): Just return if TREE_USED is already set. Don't set TREE_USED if cp_unevaluated_operand is set. (tree_used_ok): New fn. * init.c (build_offset_ref): Check it instead of TREE_USED. * call.c (build_call_a): Likewise. * cp-tree.h: Declare it. (DECL_NO_LINKAGE_CHECKED): No longer needed. (struct lang_decl_base): Remove no_linkage_checked bitfield. From-SVN: r150807
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