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-rw-r--r--test/fixedbugs/issue21048.go72
1 files changed, 72 insertions, 0 deletions
diff --git a/test/fixedbugs/issue21048.go b/test/fixedbugs/issue21048.go
new file mode 100644
index 0000000..e365a5e
--- /dev/null
+++ b/test/fixedbugs/issue21048.go
@@ -0,0 +1,72 @@
+// run
+
+// Copyright 2017 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 21048: s390x merged address generation into stores
+// to unaligned global variables. This resulted in an illegal
+// instruction.
+
+package main
+
+type T struct {
+ _ [1]byte
+ a [2]byte // offset: 1
+ _ [3]byte
+ b [2]uint16 // offset: 6
+ _ [2]byte
+ c [2]uint32 // offset: 12
+ _ [2]byte
+ d [2]int16 // offset: 22
+ _ [2]byte
+ e [2]int32 // offset: 28
+}
+
+var Source, Sink T
+
+func newT() T {
+ return T{
+ a: [2]byte{1, 2},
+ b: [2]uint16{1, 2},
+ c: [2]uint32{1, 2},
+ d: [2]int16{1, 2},
+ e: [2]int32{1, 2},
+ }
+}
+
+//go:noinline
+func moves() {
+ Sink.a = Source.a
+ Sink.b = Source.b
+ Sink.c = Source.c
+ Sink.d = Source.d
+ Sink.e = Source.e
+}
+
+//go:noinline
+func loads() *T {
+ t := newT()
+ t.a = Source.a
+ t.b = Source.b
+ t.c = Source.c
+ t.d = Source.d
+ t.e = Source.e
+ return &t
+}
+
+//go:noinline
+func stores() {
+ t := newT()
+ Sink.a = t.a
+ Sink.b = t.b
+ Sink.c = t.c
+ Sink.d = t.d
+ Sink.e = t.e
+}
+
+func main() {
+ moves()
+ loads()
+ stores()
+}