1 files changed, 23 insertions, 0 deletions
diff --git a/test/fixedbugs/issue11987.go b/test/fixedbugs/issue11987.go
new file mode 100644
index 0000000000..78fc28bda7
--- /dev/null
+++ b/test/fixedbugs/issue11987.go
@@ -0,0 +1,23 @@
+// run
+
+// Copyright 2015 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.
+
+// Issue 11987. The ppc64 SRADCC instruction was misassembled in a way
+// lost bit 5 of the immediate so v>>32 was assembled as v>>0.  SRADCC
+// is only ever inserted by peep so it's hard to be sure when it will
+// be used. This formulation worked when the bug was fixed.
+
+package main
+
+import "fmt"
+
+var v int64 = 0x80000000
+
+func main() {
+	s := fmt.Sprintf("%v", v>>32 == 0)
+	if s != "true" {
+		fmt.Printf("BUG: v>>32 == 0 evaluated as %q\n", s)
+	}
+}