Commit c45c0c0c authored by Russ Cox's avatar Russ Cox

gc: zero stack-allocated slice backing arrays

Fixes Han-Wen's termite bug.

R=lvd
CC=golang-dev
https://golang.org/cl/4977052
parent cd6f319a
......@@ -696,6 +696,7 @@ slicelit(int ctxt, Node *n, Node *var, NodeList **init)
if(n->esc == EscNone) {
a = nod(OXXX, N, N);
tempname(a, t);
*init = list(*init, nod(OAS, a, N)); // zero new temp
a = nod(OADDR, a, N);
} else {
a = nod(ONEW, N, N);
......
// $G $D/$F.go && $L $F.$A && ./$A.out
// Copyright 2011 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 run-time behavior of escape analysis-related optimizations.
package main
func main() {
test1()
}
func test1() {
check1(0)
check1(1)
check1(2)
}
type T1 struct {
X, Y, Z int
}
func f() int {
return 1
}
func check1(pass int) T1 {
v := []T1{{X: f(), Z: f()}}
if v[0].Y != 0 {
panic("nonzero init")
}
v[0].Y = pass
return v[0]
}
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