obtained gcc-4.6.4.tar.bz2 from upstream website;upstream

verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.

downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.

if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.

1 files changed, 55 insertions, 0 deletions

diff --git a/libgo/runtime/go-type-eface.c b/libgo/runtime/go-type-eface.c
new file mode 100644
index 000000000..84ca05ee1
--- /dev/null
+++ b/libgo/runtime/go-type-eface.c
@@ -0,0 +1,55 @@
+/* go-type-eface.c -- hash and equality empty interface functions.
+
+   Copyright 2010 The Go Authors. All rights reserved.
+   Use of this source code is governed by a BSD-style
+   license that can be found in the LICENSE file.  */
+
+#include "interface.h"
+#include "go-type.h"
+
+/* A hash function for an empty interface.  */
+
+size_t
+__go_type_hash_empty_interface (const void *vval,
+				size_t key_size __attribute__ ((unused)))
+{
+  const struct __go_empty_interface *val;
+  const struct __go_type_descriptor *descriptor;
+  size_t size;
+
+  val = (const struct __go_empty_interface *) vval;
+  descriptor = val->__type_descriptor;
+  if (descriptor == NULL)
+    return 0;
+  size = descriptor->__size;
+  if (__go_is_pointer_type (descriptor))
+    return descriptor->__hashfn (&val->__object, size);
+  else
+    return descriptor->__hashfn (val->__object, size);
+}
+
+/* An equality function for an empty interface.  */
+
+_Bool
+__go_type_equal_empty_interface (const void *vv1, const void *vv2,
+				 size_t key_size __attribute__ ((unused)))
+{
+  const struct __go_empty_interface *v1;
+  const struct __go_empty_interface *v2;
+  const struct __go_type_descriptor* v1_descriptor;
+  const struct __go_type_descriptor* v2_descriptor;
+
+  v1 = (const struct __go_empty_interface *) vv1;
+  v2 = (const struct __go_empty_interface *) vv2;
+  v1_descriptor = v1->__type_descriptor;
+  v2_descriptor = v2->__type_descriptor;
+  if (v1_descriptor == NULL || v2_descriptor == NULL)
+    return v1_descriptor == v2_descriptor;
+  if (!__go_type_descriptors_equal (v1_descriptor, v2_descriptor))
+    return 0;
+  if (__go_is_pointer_type (v1_descriptor))
+    return v1->__object == v2->__object;
+  else
+    return v1_descriptor->__equalfn (v1->__object, v2->__object,
+				     v1_descriptor->__size);
+}