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-rw-r--r--test/fixedbugs/issue19137.go51
1 files changed, 51 insertions, 0 deletions
diff --git a/test/fixedbugs/issue19137.go b/test/fixedbugs/issue19137.go
new file mode 100644
index 0000000..0539a85
--- /dev/null
+++ b/test/fixedbugs/issue19137.go
@@ -0,0 +1,51 @@
+// compile
+
+// 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 19137: folding address into load/store causes
+// odd offset on ARM64.
+
+package p
+
+type T struct {
+ p *int
+ a [2]byte
+ b [6]byte // not 4-byte aligned
+}
+
+func f(b [6]byte) T {
+ var x [1000]int // a large stack frame
+ _ = x
+ return T{b: b}
+}
+
+// Arg symbol's base address may be not at an aligned offset to
+// SP. Folding arg's address into load/store may cause odd offset.
+func move(a, b [20]byte) [20]byte {
+ var x [1000]int // a large stack frame
+ _ = x
+ return b // b is not 8-byte aligned to SP
+}
+func zero() ([20]byte, [20]byte) {
+ var x [1000]int // a large stack frame
+ _ = x
+ return [20]byte{}, [20]byte{} // the second return value is not 8-byte aligned to SP
+}
+
+// Issue 21992: unaligned offset between 256 and 504 and handled
+// incorrectly.
+type T2 struct {
+ a [257]byte
+ // fields below are not 8-, 4-, 2-byte aligned
+ b [8]byte
+ c [4]byte
+ d [2]byte
+}
+
+func f2(x *T2) {
+ x.b = [8]byte{}
+ x.c = [4]byte{}
+ x.d = [2]byte{}
+}