Initial check-in of gcc 4.7.2.

Change-Id: I4a2f5a921c21741a0e18bda986d77e5f1bef0365

1 files changed, 32 insertions, 0 deletions

diff --git a/gcc-4.7/libgo/runtime/go-unsafe-new.c b/gcc-4.7/libgo/runtime/go-unsafe-new.c
new file mode 100644
index 000000000..a75c3884e
--- /dev/null
+++ b/gcc-4.7/libgo/runtime/go-unsafe-new.c
@@ -0,0 +1,32 @@
+/* go-unsafe-new.c -- unsafe.New function for Go.
+
+   Copyright 2009 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 "runtime.h"
+#include "go-alloc.h"
+#include "go-type.h"
+#include "interface.h"
+
+/* Implement unsafe_New, called from the reflect package.  */
+
+void *unsafe_New (struct __go_empty_interface type)
+  asm ("reflect.unsafe_New");
+
+/* The dynamic type of the argument will be a pointer to a type
+   descriptor.  */
+
+void *
+unsafe_New (struct __go_empty_interface type)
+{
+  const struct __go_type_descriptor *descriptor;
+
+  if (((uintptr_t) type.__type_descriptor & reflectFlags) != 0)
+    runtime_panicstring ("invalid interface value");
+
+  /* FIXME: We should check __type_descriptor to verify that this is
+     really a type descriptor.  */
+  descriptor = (const struct __go_type_descriptor *) type.__object;
+  return __go_alloc (descriptor->__size);
+}