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go/test/fixedbugs/issue12108.go
Michael Hudson-Doyle 710b9ad617 cmd/compile/internal/ppc64: fix the epilogue for non-leaf generated methods
This lets us re-enable duffzero.

Fixes #12108

Change-Id: Iefd24d26eaa56067caa2c29ff99cd20a42d8714a
Reviewed-on: https://go-review.googlesource.com/14937
Reviewed-by: Keith Randall <khr@golang.org>
2015-10-06 03:34:13 +00:00

38 lines
630 B
Go

// 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.
// A generated method with a return value large enough to be
// initialized by duffzero is not a leaf method, which violated
// assumptions made by cmd/internal/obj/ppc64.
package main
const N = 9 // values > 8 cause (Super).Method to use duffzero
type Base struct {
}
func (b *Base) Method() (x [N]uintptr) {
return
}
type Super struct {
Base
}
type T interface {
Method() [N]uintptr
}
func f(q T) {
q.Method()
}
func main() {
var s Super
f(&s)
}