diff --git a/cmd/oracle/main.go b/cmd/oracle/main.go
index 5b516a2c..6ebd731c 100644
--- a/cmd/oracle/main.go
+++ b/cmd/oracle/main.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 // oracle: a tool for answering questions about Go source code.
 //
 // Each query prints its results to the standard output in an
diff --git a/importer/importer.go b/importer/importer.go
index 9248d73e..0fb5f2ff 100644
--- a/importer/importer.go
+++ b/importer/importer.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 // Package importer defines the Importer, which loads, parses and
 // type-checks packages of Go code plus their transitive closure, and
 // retains both the ASTs and the derived facts.
diff --git a/importer/pkginfo.go b/importer/pkginfo.go
index 64857d7c..e032d3e1 100644
--- a/importer/pkginfo.go
+++ b/importer/pkginfo.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package importer
 
 // TODO(gri): absorb this into go/types.
diff --git a/importer/source.go b/importer/source.go
index 77890723..d7b0cbf0 100644
--- a/importer/source.go
+++ b/importer/source.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package importer
 
 // This file defines utilities for working with source positions.
diff --git a/importer/source_test.go b/importer/source_test.go
index 3be56cd7..961e0565 100644
--- a/importer/source_test.go
+++ b/importer/source_test.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package importer_test
 
 // This file defines tests of source utilities.
diff --git a/importer/util.go b/importer/util.go
index a2865c82..1c260dc9 100644
--- a/importer/util.go
+++ b/importer/util.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package importer
 
 // This file defines various utility functions exposed by the package
diff --git a/oracle/callees.go b/oracle/callees.go
index b2122a27..ad714ee9 100644
--- a/oracle/callees.go
+++ b/oracle/callees.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package oracle
 
 import (
diff --git a/oracle/callers.go b/oracle/callers.go
index c6a36c93..b9315d6a 100644
--- a/oracle/callers.go
+++ b/oracle/callers.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package oracle
 
 import (
diff --git a/oracle/callgraph.go b/oracle/callgraph.go
index d944a42b..0dae7dcf 100644
--- a/oracle/callgraph.go
+++ b/oracle/callgraph.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package oracle
 
 import (
diff --git a/oracle/callstack.go b/oracle/callstack.go
index 6dc3cf10..c873a751 100644
--- a/oracle/callstack.go
+++ b/oracle/callstack.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package oracle
 
 import (
diff --git a/oracle/describe.go b/oracle/describe.go
index 3698918e..6dd77875 100644
--- a/oracle/describe.go
+++ b/oracle/describe.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package oracle
 
 import (
diff --git a/oracle/freevars.go b/oracle/freevars.go
index e4d7c4ef..b50fba59 100644
--- a/oracle/freevars.go
+++ b/oracle/freevars.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package oracle
 
 import (
diff --git a/oracle/implements.go b/oracle/implements.go
index 6746e8b5..75f6d31e 100644
--- a/oracle/implements.go
+++ b/oracle/implements.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package oracle
 
 import (
diff --git a/oracle/oracle.go b/oracle/oracle.go
index 47aa914f..c1e2ca20 100644
--- a/oracle/oracle.go
+++ b/oracle/oracle.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package oracle
 
 // This file defines oracle.Main, the entry point for the oracle tool.
diff --git a/oracle/oracle_test.go b/oracle/oracle_test.go
index 736c4a1a..1517b3fa 100644
--- a/oracle/oracle_test.go
+++ b/oracle/oracle_test.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package oracle_test
 
 // This file defines a test framework for oracle queries.
diff --git a/oracle/peers.go b/oracle/peers.go
index 644dfccb..d27dce98 100644
--- a/oracle/peers.go
+++ b/oracle/peers.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package oracle
 
 import (
diff --git a/pointer/analysis.go b/pointer/analysis.go
index e00cc9f6..c842443c 100644
--- a/pointer/analysis.go
+++ b/pointer/analysis.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package pointer
 
 // This file defines the entry points into the pointer analysis.
diff --git a/pointer/api.go b/pointer/api.go
index be594d1f..0587fe0c 100644
--- a/pointer/api.go
+++ b/pointer/api.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package pointer
 
 import (
diff --git a/pointer/callgraph.go b/pointer/callgraph.go
index de8489e4..ef26a367 100644
--- a/pointer/callgraph.go
+++ b/pointer/callgraph.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package pointer
 
 import (
diff --git a/pointer/doc.go b/pointer/doc.go
index 6eabfbed..3d778442 100644
--- a/pointer/doc.go
+++ b/pointer/doc.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 /*
 
 Package pointer implements Andersen's analysis, an inclusion-based
diff --git a/pointer/gen.go b/pointer/gen.go
index b13d47a0..0d2e1bde 100644
--- a/pointer/gen.go
+++ b/pointer/gen.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package pointer
 
 // This file defines the constraint generation phase.
diff --git a/pointer/intrinsics.go b/pointer/intrinsics.go
index 63230237..26322a7b 100644
--- a/pointer/intrinsics.go
+++ b/pointer/intrinsics.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package pointer
 
 // This package defines the treatment of intrinsics, i.e. library
diff --git a/pointer/labels.go b/pointer/labels.go
index d24f9fd1..fec7a039 100644
--- a/pointer/labels.go
+++ b/pointer/labels.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package pointer
 
 import (
diff --git a/pointer/pointer_test.go b/pointer/pointer_test.go
index 997b42a6..b9969489 100644
--- a/pointer/pointer_test.go
+++ b/pointer/pointer_test.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package pointer_test
 
 // This test uses 'expectation' comments embedded within testdata/*.go
diff --git a/pointer/print.go b/pointer/print.go
index 78d45ca1..9184d3ab 100644
--- a/pointer/print.go
+++ b/pointer/print.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package pointer
 
 import "fmt"
diff --git a/pointer/solve.go b/pointer/solve.go
index 34916ca1..1cb04e53 100644
--- a/pointer/solve.go
+++ b/pointer/solve.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package pointer
 
 // This file defines a naive Andersen-style solver for the inclusion
diff --git a/pointer/util.go b/pointer/util.go
index e722eef5..184250da 100644
--- a/pointer/util.go
+++ b/pointer/util.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package pointer
 
 import (
diff --git a/ssa/blockopt.go b/ssa/blockopt.go
index 95036335..1253df12 100644
--- a/ssa/blockopt.go
+++ b/ssa/blockopt.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // Simple block optimizations to simplify the control flow graph.
diff --git a/ssa/builder.go b/ssa/builder.go
index 36c02053..06bac219 100644
--- a/ssa/builder.go
+++ b/ssa/builder.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file implements the BUILD phase of SSA construction.
diff --git a/ssa/builder_test.go b/ssa/builder_test.go
index 211395bd..138b24c0 100644
--- a/ssa/builder_test.go
+++ b/ssa/builder_test.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa_test
 
 import (
diff --git a/ssa/const.go b/ssa/const.go
index 51bcf046..2f9acd0b 100644
--- a/ssa/const.go
+++ b/ssa/const.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file defines the Const SSA value type.
diff --git a/ssa/create.go b/ssa/create.go
index e8eaf868..9af3fe27 100644
--- a/ssa/create.go
+++ b/ssa/create.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file implements the CREATE phase of SSA construction.
diff --git a/ssa/doc.go b/ssa/doc.go
index 2aba2ff9..6fc48c51 100644
--- a/ssa/doc.go
+++ b/ssa/doc.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 // Package ssa defines a representation of the elements of Go programs
 // (packages, types, functions, variables and constants) using a
 // static single-assignment (SSA) form intermediate representation
diff --git a/ssa/dom.go b/ssa/dom.go
index 2fe3098c..d6e85b6e 100644
--- a/ssa/dom.go
+++ b/ssa/dom.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file defines algorithms related to dominance.
diff --git a/ssa/emit.go b/ssa/emit.go
index d819f07b..e13a2046 100644
--- a/ssa/emit.go
+++ b/ssa/emit.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // Helpers for emitting SSA instructions.
diff --git a/ssa/example_test.go b/ssa/example_test.go
index c7c5db92..2803a6d7 100644
--- a/ssa/example_test.go
+++ b/ssa/example_test.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa_test
 
 import (
diff --git a/ssa/func.go b/ssa/func.go
index 33e30da8..c7764c27 100644
--- a/ssa/func.go
+++ b/ssa/func.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file implements the Function and BasicBlock types.
diff --git a/ssa/interp/interp_test.go b/ssa/interp/interp_test.go
index 12c14ffd..60011844 100644
--- a/ssa/interp/interp_test.go
+++ b/ssa/interp/interp_test.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 // +build !windows,!plan9
 
 package interp_test
diff --git a/ssa/interp/value.go b/ssa/interp/value.go
index ad7ca984..654e16d2 100644
--- a/ssa/interp/value.go
+++ b/ssa/interp/value.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package interp
 
 // Values
diff --git a/ssa/lift.go b/ssa/lift.go
index 5549e542..5643b8c6 100644
--- a/ssa/lift.go
+++ b/ssa/lift.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file defines the lifting pass which tries to "lift" Alloc
diff --git a/ssa/lvalue.go b/ssa/lvalue.go
index 48ccf8db..3ed7642a 100644
--- a/ssa/lvalue.go
+++ b/ssa/lvalue.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // lvalues are the union of addressable expressions and map-index
diff --git a/ssa/print.go b/ssa/print.go
index c5a256fe..16a5be8a 100644
--- a/ssa/print.go
+++ b/ssa/print.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file implements the String() methods for all Value and
diff --git a/ssa/promote.go b/ssa/promote.go
index d7c7a2a5..15765102 100644
--- a/ssa/promote.go
+++ b/ssa/promote.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file defines utilities for method-set computation including
diff --git a/ssa/sanity.go b/ssa/sanity.go
index dea827be..4b3eb11f 100644
--- a/ssa/sanity.go
+++ b/ssa/sanity.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // An optional pass for sanity-checking invariants of the SSA representation.
diff --git a/ssa/source.go b/ssa/source.go
index eef1073a..f490a323 100644
--- a/ssa/source.go
+++ b/ssa/source.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file defines utilities for working with source positions
diff --git a/ssa/source_test.go b/ssa/source_test.go
index d6bd8768..6e27c454 100644
--- a/ssa/source_test.go
+++ b/ssa/source_test.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa_test
 
 // This file defines tests of source-level debugging utilities.
diff --git a/ssa/ssa.go b/ssa/ssa.go
index 1300fcbf..25d22d7a 100644
--- a/ssa/ssa.go
+++ b/ssa/ssa.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This package defines a high-level intermediate representation for
diff --git a/ssa/ssadump.go b/ssa/ssadump.go
index 28f71cdf..33c020ed 100644
--- a/ssa/ssadump.go
+++ b/ssa/ssadump.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 // +build ignore
 
 package main
diff --git a/ssa/stdlib_test.go b/ssa/stdlib_test.go
index 9d8ad2ce..8bfcdeaf 100644
--- a/ssa/stdlib_test.go
+++ b/ssa/stdlib_test.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa_test
 
 // This file runs the SSA builder in sanity-checking mode on all
diff --git a/ssa/testmain.go b/ssa/testmain.go
index 101831e2..9b735dfc 100644
--- a/ssa/testmain.go
+++ b/ssa/testmain.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // CreateTestMainFunction synthesizes main functions for tests.
diff --git a/ssa/util.go b/ssa/util.go
index 94af12c1..0201c8a0 100644
--- a/ssa/util.go
+++ b/ssa/util.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file defines a number of miscellaneous utility functions.
diff --git a/ssa/visit.go b/ssa/visit.go
index 5437c57e..eccddcf5 100644
--- a/ssa/visit.go
+++ b/ssa/visit.go
@@ -1,3 +1,7 @@
+// Copyright 2013 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.
+
 package ssa
 
 // This file defines utilities for visiting the SSA representation of