}
}
+/* Return true if non-dependent expressions EXPR contains within it a
+ cast expression with a dependent argument. */
+
+static bool
+contains_dependent_cast_p (tree expr)
+{
+ switch (TREE_CODE (expr))
+ {
+ case CAST_EXPR:
+ case REINTERPRET_CAST_EXPR:
+ case STATIC_CAST_EXPR:
+ case DYNAMIC_CAST_EXPR:
+ case CONST_CAST_EXPR:
+ {
+ tree op = TREE_OPERAND (expr, 0);
+
+ if (op && (type_dependent_expression_p (op)
+ || value_dependent_expression_p (op)))
+ return true;
+ }
+ break;
+
+ case TREE_LIST:
+ /* The operands of a CALL_EXPR are held as a list. */
+ for (; expr; expr = TREE_CHAIN (expr))
+ if (contains_dependent_cast_p (TREE_VALUE (expr)))
+ return true;
+ return false;
+
+ default:
+ break;
+ }
+
+ if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (expr))))
+ {
+ int ix;
+
+ for (ix = TREE_CODE_LENGTH (TREE_CODE (expr)); ix--;)
+ if (TREE_OPERAND (expr, ix)
+ && contains_dependent_cast_p (TREE_OPERAND (expr, ix)))
+ return true;
+ }
+
+ return false;
+}
+
/* Simplify EXPR if it is a non-dependent expression. Returns the
(possibly simplified) expression. */
as two declarations of the same function, for example. */
if (processing_template_decl
&& !type_dependent_expression_p (expr)
- && !value_dependent_expression_p (expr))
+ && !value_dependent_expression_p (expr)
+ && !contains_dependent_cast_p (expr))
{
HOST_WIDE_INT saved_processing_template_decl;
--- /dev/null
+// Copyright (C) 2005 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 8 Mar 2005 <nathan@codesourcery.com>
+
+// PR 20186: ICE
+// Origin: Jan Dvorak <jan.dvorak@kraxnet.cz>
+
+template<typename T> void foo(T &t)
+{
+ int i = static_cast<int>(t);
+}