c++: Avoid using __array_rank as a variable name [PR115061]

This patch fixes a compilation error when building GCC using Clang.
Since __array_rank is used as a built-in trait name, use rank instead.

	PR c++/115061

gcc/cp/ChangeLog:

	* semantics.cc (finish_trait_expr): Use rank instead of
	__array_rank.

Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org>

diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc
index 43b175f92fdc2fea563aab70118e844453f7dba9..df62e2d80dbd3016d1f7dee919abd1f36150f2cf 100644 (file)
--- a/gcc/cp/semantics.cc
+++ b/gcc/cp/semantics.cc
@@ -12914,10 +12914,10 @@ finish_trait_expr (location_t loc, cp_trait_kind kind, tree type1, tree type2)
   tree val;
   if (kind == CPTK_RANK)
     {
-      size_t __array_rank = 0;
+      size_t rank = 0;
       for (; TREE_CODE (type1) == ARRAY_TYPE; type1 = TREE_TYPE (type1))
-       ++__array_rank;
-      val = build_int_cst (size_type_node, __array_rank);
+       ++rank;
+      val = build_int_cst (size_type_node, rank);
     }
   else
     val = (trait_expr_value (kind, type1, type2)