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-rw-r--r--gcc/cp/ChangeLog5
-rw-r--r--gcc/cp/pt.c11
2 files changed, 15 insertions, 1 deletions
diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index c7e39be..e00b400 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,8 @@
+2011-06-23 Jason Merrill <jason@redhat.com>
+
+ PR c++/35255
+ * pt.c (resolve_overloaded_unification): Fix DR 115 handling.
+
2011-06-23 Paolo Carlini <paolo.carlini@oracle.com>
PR c++/44625
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index 08ce5af..b3dd85f 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -14524,6 +14524,7 @@ resolve_overloaded_unification (tree tparms,
the affected templates before we try to unify, in case the
explicit args will completely resolve the templates in question. */
+ int ok = 0;
tree expl_subargs = TREE_OPERAND (arg, 1);
arg = TREE_OPERAND (arg, 0);
@@ -14538,7 +14539,7 @@ resolve_overloaded_unification (tree tparms,
++processing_template_decl;
subargs = get_bindings (fn, DECL_TEMPLATE_RESULT (fn),
expl_subargs, /*check_ret=*/false);
- if (subargs)
+ if (subargs && !any_dependent_template_arguments_p (subargs))
{
elem = tsubst (TREE_TYPE (fn), subargs, tf_none, NULL_TREE);
if (try_one_overload (tparms, targs, tempargs, parm,
@@ -14549,8 +14550,16 @@ resolve_overloaded_unification (tree tparms,
++good;
}
}
+ else if (subargs)
+ ++ok;
--processing_template_decl;
}
+ /* If no templates (or more than one) are fully resolved by the
+ explicit arguments, this template-id is a non-deduced context; it
+ could still be OK if we deduce all template arguments for the
+ enclosing call through other arguments. */
+ if (good != 1)
+ good = ok;
}
else if (TREE_CODE (arg) != OVERLOAD
&& TREE_CODE (arg) != FUNCTION_DECL)