+2005-07-17 Mark Mitchell <mark@codesourcery.com>
+
+ PR c++/22139
+ * cp-tree.h (DECL_TEMPLATE_INFO): Improve documentation.
+ * decl.c (duplicate_decls): Re-register template specializations
+ for functions that have DECL_TEMLPLATE_INFO, even if they do not
+ have DECL_TEMPLATE_INSTANTIATION set.
+
2005-07-16 Kaveh R. Ghazi <ghazi@caip.rutgers.edu>
* call.c (diagnostic_fn_t): New.
#define DECL_DEFERRED_FN(DECL) \
(DECL_LANG_SPECIFIC (DECL)->decl_flags.deferred)
-/* For a VAR_DECL, FUNCTION_DECL, TYPE_DECL or TEMPLATE_DECL:
- template-specific information. */
+/* If non-NULL for a VAR_DECL, FUNCTION_DECL, TYPE_DECL or
+ TEMPLATE_DECL, the entity is a template specialization. In that
+ case, DECL_TEMPLATE_INFO is a TREE_LIST, whose TREE_PURPOSE is the
+ TEMPLATE_DECL of which this entity is a specialization. The TREE_
+ TREE_VALUE is the template arguments used to specialize the
+ template.
+
+ In general, DECL_TEMPLATE_INFO is non-NULL only if
+ DECL_USE_TEMPLATE is non-zero. However, for friends, we sometimes
+ have DECL_TEMPLATE_INFO even when DECL_USE_TEMPLATE is zero.
+ Consider:
+
+ template <typename T> struct S { friend void f(T) {} };
+
+ In this case, S<int>::f is, from the point of view of the compiler,
+ an instantiation of a template -- but, from the point of view of
+ the language, each instantiation of S results in a wholly unrelated
+ global function f. */
#define DECL_TEMPLATE_INFO(NODE) \
(DECL_LANG_SPECIFIC (VAR_TEMPL_TYPE_OR_FUNCTION_DECL_CHECK (NODE)) \
->decl_flags.u.template_info)
memcpy ((char *) olddecl + sizeof (struct tree_decl_common),
(char *) newdecl + sizeof (struct tree_decl_common),
sizeof (struct tree_function_decl) - sizeof (struct tree_decl_common));
- if (DECL_TEMPLATE_INSTANTIATION (newdecl))
+ if (DECL_TEMPLATE_INFO (newdecl))
/* If newdecl is a template instantiation, it is possible that
the following sequence of events has occurred:
+2005-07-17 Mark Mitchell <mark@codesourcery.com>
+
+ PR c++/22139
+ * g++.dg/template/friend36.C: New test.
+
2005-07-16 David Edelsohn <edelsohn@gnu.org>
PR fortran/21730
--- /dev/null
+// PR c++/22139
+// { dg-options "--param ggc-min-expand=0 --param ggc-min-heapsize=0" }
+
+template <int rank, int dim> class Tensor;
+template <int rank, int dim> struct SymmetricTensor {
+ SymmetricTensor (const Tensor<2,dim> &t);
+ friend void foo();
+};
+template <> SymmetricTensor<2,2>::SymmetricTensor (const Tensor<2,2> &t) {}
+template <> SymmetricTensor<2,3>::SymmetricTensor (const Tensor<2,3> &t) {}