re PR c++/23839 (ICE: expected var_decl, have parm_decl in cxx_mark_addressable,…

re PR c++/23839 (ICE: expected var_decl, have parm_decl in cxx_mark_addressable, at cp/typeck.c:4343)

	PR c++/23839
	* typeck.c (cxx_mark_addressable): Only check DECL_HARD_REGISTER
	for VAR_DECLs.

	PR c++/23839
	* g++.dg/parse/register1.C: New test.

From-SVN: r104225

gcc/cp/ChangeLog

 2005-09-13  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/23839
+	* typeck.c (cxx_mark_addressable): Only check DECL_HARD_REGISTER
+	for VAR_DECLs.
+
+2005-09-13  Mark Mitchell  <mark@codesourcery.com>
+
 	PR c++/23842
 	* pt.c (tsubst_default_argument): Do treat default argument
 	expressions as occurring in the context of the function called. 

gcc/cp/typeck.c

@@ -4340,7 +4340,7 @@ cxx_mark_addressable (tree exp)
 	if (DECL_REGISTER (x) && !TREE_ADDRESSABLE (x)
 	    && !DECL_ARTIFICIAL (x))
 	  {
-	    if (DECL_HARD_REGISTER (x) != 0)
+	    if (TREE_CODE (x) == VAR_DECL && DECL_HARD_REGISTER (x))
 	      {
 		error
 		  ("address of explicit register variable %qD requested", x);

gcc/testsuite/ChangeLog

 2005-09-13  Mark Mitchell  <mark@codesourcery.com>
 
+	PR c++/23839
+	* g++.dg/parse/register1.C: New test.
+
+2005-09-13  Mark Mitchell  <mark@codesourcery.com>
+
 	PR c++/23842
 	* g++.dg/template/access16.C: New test.
 

gcc/testsuite/g++.dg/parse/register1.C

+// PR c++/23839
+
+class C
+{
+  int i;
+public:
+  C(int j) : i(j) { }
+  operator int() { return i; }
+};
+
+C f (register C x)
+{
+  return x + 31;
+}