From 4261159083dfcfea414490c157244ed20529255e Mon Sep 17 00:00:00 2001
From: Nathan Sidwell <nathan@codesourcery.com>
Date: Thu, 22 Jul 2004 14:57:09 +0000
Subject: [PATCH] * pt.c cp:         * pt.c  (get_template_base): Check type is
 completable. testsuite:         * g++.dg/template/crash20.c: New.

From-SVN: r85050
---
 gcc/cp/ChangeLog                        |  4 ++++
 gcc/cp/pt.c                             |  4 ++++
 gcc/testsuite/ChangeLog                 |  4 ++++
 gcc/testsuite/g++.dg/template/crash20.C | 20 ++++++++++++++++++++
 4 files changed, 32 insertions(+)
 create mode 100644 gcc/testsuite/g++.dg/template/crash20.C

diff --git a/gcc/cp/ChangeLog b/gcc/cp/ChangeLog
index 080de524c4f..ce91f8965ed 100644
--- a/gcc/cp/ChangeLog
+++ b/gcc/cp/ChangeLog
@@ -1,3 +1,7 @@
+2004-07-22  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* pt.c (get_template_base): Check type is completable.
+
 2004-07-21  Eric Christopher  <echristo@redhat.com>
 
 	* decl.c (poplevel): Inline unused variable checking.
diff --git a/gcc/cp/pt.c b/gcc/cp/pt.c
index b30bd5772b8..ca84b394423 100644
--- a/gcc/cp/pt.c
+++ b/gcc/cp/pt.c
@@ -9458,6 +9458,10 @@ get_template_base (tree tparms, tree targs, tree parm, tree arg)
   my_friendly_assert (IS_AGGR_TYPE_CODE (TREE_CODE (arg)), 92);
   
   arg_binfo = TYPE_BINFO (complete_type (arg));
+  if (!arg_binfo)
+    /* The type could not be completed.  */
+    return NULL_TREE;
+  
   rval = get_template_base_recursive (tparms, targs,
 				      parm, arg_binfo, 
 				      NULL_TREE,
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 871b1560d6a..9e20ccc21b4 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2004-07-22  Nathan Sidwell  <nathan@codesourcery.com>
+
+	* g++.dg/template/crash20.c: New.
+
 2004-07-22  David Billinghurst (David.Billinghurst@riotinto.com)
 
 	* gfortran.dg/g77/970625-2.f Copy from g77.f-torture/execute. 
diff --git a/gcc/testsuite/g++.dg/template/crash20.C b/gcc/testsuite/g++.dg/template/crash20.C
new file mode 100644
index 00000000000..0492b72e35e
--- /dev/null
+++ b/gcc/testsuite/g++.dg/template/crash20.C
@@ -0,0 +1,20 @@
+// { dg-do compile }
+
+// Copyright (C) 2004 Free Software Foundation, Inc.
+// Contributed by Nathan Sidwell 22 Jul 2004 <nathan@codesourcery.com>
+
+// ICE with incompletable type.
+
+class INC;
+
+template <typename T> class B {};
+
+template<typename T> void Foo (B<T> &);
+
+void Foo (INC &);
+
+void Baz (INC *p)
+{
+  Foo (*p);
+}
+
-- 
2.30.2