1 files changed, 46 insertions, 0 deletions
diff --git a/test/live1.go b/test/live1.go
new file mode 100644
index 0000000..87c8c97
--- /dev/null
+++ b/test/live1.go
@@ -0,0 +1,46 @@
+// compile
+
+// Copyright 2014 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.
+
+// Test that code compiles without
+// "internal error: ... recorded as live on entry" errors
+// from the liveness code.
+//
+// This code contains methods or other construct that
+// trigger the generation of wrapper functions with no
+// clear line number (they end up using line 1), and those
+// would have annotations printed if we used -live=1,
+// like the live.go test does.
+// Instead, this test relies on the fact that the liveness
+// analysis turns any non-live parameter on entry into
+// a compile error. Compiling successfully means that bug
+// has been avoided.
+
+package main
+
+// The liveness analysis used to get confused by the tail return
+// instruction in the wrapper methods generated for T1.M and (*T1).M,
+// causing a spurious "live at entry: ~r1" for the return result.
+
+type T struct {
+}
+
+func (t *T) M() *int
+
+type T1 struct {
+	*T
+}
+
+// Liveness analysis used to have the VARDEFs in the wrong place,
+// causing a temporary to appear live on entry.
+
+func f1(pkg, typ, meth string) {
+	panic("value method " + pkg + "." + typ + "." + meth + " called using nil *" + typ + " pointer")
+}
+
+func f2() interface{} {
+	return new(int)
+}
+