cp/

	PR c++/28705
	* semantics.c (finish_call_expr): Add assert.
	* name-lookup.c (lookup_arg_dependent): Check we found an overload
	or an object.
testsuite/
	PR c++/28705
	* g++.dg/lookup/koenig5.C: New.
	* g++.dg/template/crash56.C: New.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@116638 138bc75d-0d04-0410-961f-82ee72b054a4

2 files changed, 62 insertions, 0 deletions

diff --git a/gcc/testsuite/g++.dg/lookup/koenig5.C b/gcc/testsuite/g++.dg/lookup/koenig5.C
new file mode 100644
index 00000000000..139e3b86684
--- /dev/null
+++ b/gcc/testsuite/g++.dg/lookup/koenig5.C
@@ -0,0 +1,46 @@
+// Koenig lookup is not defined as intended in the std.  DR 218 gives
+// an indication of what is meant.  This test case encapsulates the
+// current conservative behaviour
+
+// Copyright (C) 2006 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 27 Aug 2006 <nathan@codesourcery.com>
+
+namespace N
+{
+  struct A {};
+  void One (...);  // { dg-error "conflict with" "" }
+  void (*Two) (...);  // { dg-error "not a function" "" }
+  namespace Three {} // { dg-error "lookup finds|not a function" "" }
+}
+
+namespace M
+{
+  struct B {};
+  struct One {};  // { dg-error "lookup finds|not a function" "" }
+  void (*Two) (...);  // { dg-error "conflict with" "" }
+  void Three (...);  // { dg-error "conflict with" "" }
+}
+
+namespace O 
+{
+  struct C {};
+  void Two (...); // { dg-error "conflict with" "" }
+}
+  
+void g (N::A *a, M::B *b, O::C *c)
+{
+  One (a); // ok
+  One (b); // { dg-error "in call to" "" }
+  One (a, b); // { dg-error "in call to" "" }
+
+  Two (a); // ok
+  Two (a, a); // ok
+  Two (b); // ok
+  Two (c); // ok
+  Two (a, b); // { dg-error "in call to" "" }
+  Two (a, c); // { dg-error "in call to" "" }
+  
+  Three (a); // { dg-error "in call to" "" }
+  Three (b); // ok
+  Three (a, b); // { dg-error "in call to" "" }
+}
diff --git a/gcc/testsuite/g++.dg/template/crash56.C b/gcc/testsuite/g++.dg/template/crash56.C
new file mode 100644
index 00000000000..1efa3500d8a
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/crash56.C
@@ -0,0 +1,16 @@
+// Origin: Wolfgang Bangerth <bangerth@dealii.org>
+
+// PR c++/28705
+// DR 218 is debating whether this is well formed or not.  We've never
+// accepted it (because we'd crash), so we continue to reject it, but
+// without crashing.
+
+namespace N
+{
+  struct A { A (A*); }; // { dg-error "lookup finds" "" }
+}
+
+template<typename T> void g (N::A *p)
+{
+  (void) A (p); // { dg-error "in call" "" }
+}