var sink interface{}
// in -> out
-func param0(p *int) *int { // ERROR "leaking param: p to result ~r1"
+func param0(p *int) *int { // ERROR "leaking param: p to result ~r0"
return p
}
func caller0a() {
i := 0
- _ = param0(&i) // ERROR "caller0a &i does not escape$"
+ _ = param0(&i)
}
func caller0b() {
- i := 0 // ERROR "moved to heap: i$"
- sink = param0(&i) // ERROR "&i escapes to heap$" "param0\(&i\) escapes to heap"
+ i := 0 // ERROR "moved to heap: i$"
+ sink = param0(&i)
}
// in, in -> out, out
-func param1(p1, p2 *int) (*int, *int) { // ERROR "leaking param: p1 to result ~r2" "leaking param: p2 to result ~r3"
+func param1(p1, p2 *int) (*int, *int) { // ERROR "leaking param: p1 to result ~r0" "leaking param: p2 to result ~r1"
return p1, p2
}
func caller1() {
i := 0 // ERROR "moved to heap: i$"
j := 0
- sink, _ = param1(&i, &j) // ERROR "&i escapes to heap$" "caller1 &j does not escape$"
+ sink, _ = param1(&i, &j)
}
// in -> other in
-func param2(p1 *int, p2 **int) { // ERROR "leaking param: p1$" "param2 p2 does not escape$"
+func param2(p1 *int, p2 **int) { // ERROR "leaking param: p1$" "p2 does not escape$"
*p2 = p1
}
func caller2a() {
i := 0 // ERROR "moved to heap: i$"
var p *int
- param2(&i, &p) // ERROR "&i escapes to heap$" "caller2a &p does not escape$"
+ param2(&i, &p)
_ = p
}
func caller2b() {
i := 0 // ERROR "moved to heap: i$"
var p *int
- param2(&i, &p) // ERROR "&i escapes to heap$" "caller2b &p does not escape$"
- sink = p // ERROR "p escapes to heap$"
+ param2(&i, &p)
+ sink = p
}
func paramArraySelfAssign(p *PairOfPairs) { // ERROR "p does not escape"
func sinkAfterSelfAssignment1(box *BoxedPair) { // ERROR "leaking param content: box"
box.pair.p1 = box.pair.p2 // ERROR "ignoring self-assignment in box.pair.p1 = box.pair.p2"
- sink = box.pair.p2 // ERROR "box.pair.p2 escapes to heap"
+ sink = box.pair.p2
}
func sinkAfterSelfAssignment2(box *BoxedPair) { // ERROR "leaking param content: box"
box.pair.p1 = box.pair.p2 // ERROR "ignoring self-assignment in box.pair.p1 = box.pair.p2"
- sink = box.pair // ERROR "box.pair escapes to heap"
+ sink = box.pair
}
func sinkAfterSelfAssignment3(box *BoxedPair) { // ERROR "leaking param content: box"
box.pair.p1 = box.pair.p2 // ERROR "ignoring self-assignment in box.pair.p1 = box.pair.p2"
- leakParam(box.pair.p2) // ERROR "box.pair.p2 escapes to heap"
+ leakParam(box.pair.p2)
}
func sinkAfterSelfAssignment4(box *BoxedPair) { // ERROR "leaking param content: box"
box.pair.p1 = box.pair.p2 // ERROR "ignoring self-assignment in box.pair.p1 = box.pair.p2"
- leakParam(box.pair) // ERROR "box.pair escapes to heap"
+ leakParam(box.pair)
}
func selfAssignmentAndUnrelated(box1, box2 *BoxedPair) { // ERROR "leaking param content: box2" "box1 does not escape"
box1.pair.p1 = box1.pair.p2 // ERROR "ignoring self-assignment in box1.pair.p1 = box1.pair.p2"
- leakParam(box2.pair.p2) // ERROR "box2.pair.p2 escapes to heap"
+ leakParam(box2.pair.p2)
}
func notSelfAssignment1(box1, box2 *BoxedPair) { // ERROR "leaking param content: box2" "box1 does not escape"
p2 *int
}
-func param3(p *Pair) { // ERROR "param3 p does not escape"
+func param3(p *Pair) { // ERROR "p does not escape"
p.p1 = p.p2 // ERROR "param3 ignoring self-assignment in p.p1 = p.p2"
}
func caller3a() {
i := 0
j := 0
- p := Pair{&i, &j} // ERROR "caller3a &i does not escape" "caller3a &j does not escape"
- param3(&p) // ERROR "caller3a &p does not escape"
+ p := Pair{&i, &j}
+ param3(&p)
_ = p
}
func caller3b() {
- i := 0 // ERROR "moved to heap: i$"
- j := 0 // ERROR "moved to heap: j$"
- p := Pair{&i, &j} // ERROR "&i escapes to heap$" "&j escapes to heap$"
- param3(&p) // ERROR "caller3b &p does not escape"
- sink = p // ERROR "p escapes to heap$"
+ i := 0 // ERROR "moved to heap: i$"
+ j := 0 // ERROR "moved to heap: j$"
+ p := Pair{&i, &j}
+ param3(&p)
+ sink = p // ERROR "p escapes to heap$"
}
// in -> rcvr
-func (p *Pair) param4(i *int) { // ERROR "\(\*Pair\).param4 p does not escape$" "leaking param: i$"
+func (p *Pair) param4(i *int) { // ERROR "p does not escape$" "leaking param: i$"
p.p1 = i
}
func caller4a() {
i := 0 // ERROR "moved to heap: i$"
p := Pair{}
- p.param4(&i) // ERROR "&i escapes to heap$" "caller4a p does not escape$"
+ p.param4(&i)
_ = p
}
func caller4b() {
i := 0 // ERROR "moved to heap: i$"
p := Pair{}
- p.param4(&i) // ERROR "&i escapes to heap$" "caller4b p does not escape$"
- sink = p // ERROR "p escapes to heap$"
+ p.param4(&i)
+ sink = p // ERROR "p escapes to heap$"
}
// in -> heap
func param5(i *int) { // ERROR "leaking param: i$"
- sink = i // ERROR "i escapes to heap$"
+ sink = i
}
func caller5() {
- i := 0 // ERROR "moved to heap: i$"
- param5(&i) // ERROR "&i escapes to heap$"
+ i := 0 // ERROR "moved to heap: i$"
+ param5(&i)
}
// *in -> heap
func param6(i ***int) { // ERROR "leaking param content: i$"
- sink = *i // ERROR "\*i escapes to heap$"
+ sink = *i
}
func caller6a() {
- i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "&i escapes to heap$" "moved to heap: p$"
- p2 := &p // ERROR "&p escapes to heap$"
- param6(&p2) // ERROR "caller6a &p2 does not escape"
+ i := 0 // ERROR "moved to heap: i$"
+ p := &i // ERROR "moved to heap: p$"
+ p2 := &p
+ param6(&p2)
}
// **in -> heap
func param7(i ***int) { // ERROR "leaking param content: i$"
- sink = **i // ERROR "\* \(\*i\) escapes to heap"
+ sink = **i
}
func caller7() {
- i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "&i escapes to heap$" "moved to heap: p$"
- p2 := &p // ERROR "&p escapes to heap$"
- param7(&p2) // ERROR "caller7 &p2 does not escape"
+ i := 0 // ERROR "moved to heap: i$"
+ p := &i
+ p2 := &p
+ param7(&p2)
}
// **in -> heap
-func param8(i **int) { // ERROR "param8 i does not escape$"
- sink = **i // ERROR "\* \(\*i\) escapes to heap"
+func param8(i **int) { // ERROR "i does not escape$"
+ sink = **i // ERROR "\*\(\*i\) escapes to heap"
}
func caller8() {
i := 0
- p := &i // ERROR "caller8 &i does not escape$"
- param8(&p) // ERROR "caller8 &p does not escape$"
+ p := &i
+ param8(&p)
}
// *in -> out
-func param9(p ***int) **int { // ERROR "leaking param: p to result ~r1 level=1"
+func param9(p ***int) **int { // ERROR "leaking param: p to result ~r0 level=1"
return *p
}
func caller9a() {
i := 0
- p := &i // ERROR "caller9a &i does not escape"
- p2 := &p // ERROR "caller9a &p does not escape"
- _ = param9(&p2) // ERROR "caller9a &p2 does not escape$"
+ p := &i
+ p2 := &p
+ _ = param9(&p2)
}
func caller9b() {
- i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "&i escapes to heap$" "moved to heap: p$"
- p2 := &p // ERROR "&p escapes to heap$"
- sink = param9(&p2) // ERROR "caller9b &p2 does not escape$" "param9\(&p2\) escapes to heap"
+ i := 0 // ERROR "moved to heap: i$"
+ p := &i // ERROR "moved to heap: p$"
+ p2 := &p
+ sink = param9(&p2)
}
// **in -> out
-func param10(p ***int) *int { // ERROR "leaking param: p to result ~r1 level=2"
+func param10(p ***int) *int { // ERROR "leaking param: p to result ~r0 level=2"
return **p
}
func caller10a() {
i := 0
- p := &i // ERROR "caller10a &i does not escape"
- p2 := &p // ERROR "caller10a &p does not escape"
- _ = param10(&p2) // ERROR "caller10a &p2 does not escape$"
+ p := &i
+ p2 := &p
+ _ = param10(&p2)
}
func caller10b() {
- i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "&i escapes to heap$"
- p2 := &p // ERROR "caller10b &p does not escape$"
- sink = param10(&p2) // ERROR "caller10b &p2 does not escape$" "param10\(&p2\) escapes to heap"
+ i := 0 // ERROR "moved to heap: i$"
+ p := &i
+ p2 := &p
+ sink = param10(&p2)
}
// in escapes to heap (address of param taken and returned)
func param11(i **int) ***int { // ERROR "moved to heap: i$"
- return &i // ERROR "&i escapes to heap$"
+ return &i
}
func caller11a() {
- i := 0 // ERROR "moved to heap: i"
- p := &i // ERROR "moved to heap: p" "&i escapes to heap"
- _ = param11(&p) // ERROR "&p escapes to heap"
+ i := 0 // ERROR "moved to heap: i"
+ p := &i // ERROR "moved to heap: p"
+ _ = param11(&p)
}
func caller11b() {
- i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "&i escapes to heap$" "moved to heap: p$"
- sink = param11(&p) // ERROR "&p escapes to heap$" "param11\(&p\) escapes to heap"
+ i := 0 // ERROR "moved to heap: i$"
+ p := &i // ERROR "moved to heap: p$"
+ sink = param11(&p)
}
func caller11c() { // GOOD
- i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "moved to heap: p" "&i escapes to heap"
- sink = *param11(&p) // ERROR "&p escapes to heap" "\*param11\(&p\) escapes to heap"
+ i := 0 // ERROR "moved to heap: i$"
+ p := &i // ERROR "moved to heap: p"
+ sink = *param11(&p)
}
func caller11d() {
- i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "&i escapes to heap" "moved to heap: p"
- p2 := &p // ERROR "&p escapes to heap"
- sink = param11(p2) // ERROR "param11\(p2\) escapes to heap"
+ i := 0 // ERROR "moved to heap: i$"
+ p := &i // ERROR "moved to heap: p"
+ p2 := &p
+ sink = param11(p2)
}
// &in -> rcvr
p ***int
}
-func (r *Indir) param12(i **int) { // ERROR "\(\*Indir\).param12 r does not escape$" "moved to heap: i$"
- r.p = &i // ERROR "&i escapes to heap$"
+func (r *Indir) param12(i **int) { // ERROR "r does not escape$" "moved to heap: i$"
+ r.p = &i
}
func caller12a() {
i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "&i escapes to heap$" "moved to heap: p$"
+ p := &i // ERROR "moved to heap: p$"
var r Indir
- r.param12(&p) // ERROR "&p escapes to heap$" "caller12a r does not escape$"
+ r.param12(&p)
_ = r
}
func caller12b() {
i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "&i escapes to heap$" "moved to heap: p$"
- r := &Indir{} // ERROR "caller12b &Indir literal does not escape$"
- r.param12(&p) // ERROR "&p escapes to heap$"
+ p := &i // ERROR "moved to heap: p$"
+ r := &Indir{} // ERROR "&Indir{} does not escape$"
+ r.param12(&p)
_ = r
}
func caller12c() {
i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "&i escapes to heap$" "moved to heap: p$"
+ p := &i // ERROR "moved to heap: p$"
r := Indir{}
- r.param12(&p) // ERROR "&p escapes to heap$" "caller12c r does not escape$"
- sink = r // ERROR "r escapes to heap$"
+ r.param12(&p)
+ sink = r
}
func caller12d() {
i := 0 // ERROR "moved to heap: i$"
- p := &i // ERROR "&i escapes to heap$" "moved to heap: p$"
+ p := &i // ERROR "moved to heap: p$"
r := Indir{}
- r.param12(&p) // ERROR "&p escapes to heap$" "caller12d r does not escape$"
- sink = **r.p // ERROR "\* \(\*r\.p\) escapes to heap"
+ r.param12(&p)
+ sink = **r.p
}
// in -> value rcvr
p **int
}
-func (v Val) param13(i *int) { // ERROR "Val.param13 v does not escape$" "leaking param: i$"
+func (v Val) param13(i *int) { // ERROR "v does not escape$" "leaking param: i$"
*v.p = i
}
i := 0 // ERROR "moved to heap: i$"
var p *int
var v Val
- v.p = &p // ERROR "caller13a &p does not escape$"
- v.param13(&i) // ERROR "&i escapes to heap$"
+ v.p = &p
+ v.param13(&i)
_ = v
}
func caller13b() {
i := 0 // ERROR "moved to heap: i$"
var p *int
- v := Val{&p} // ERROR "caller13b &p does not escape$"
- v.param13(&i) // ERROR "&i escapes to heap$"
+ v := Val{&p}
+ v.param13(&i)
_ = v
}
func caller13c() {
i := 0 // ERROR "moved to heap: i$"
var p *int
- v := &Val{&p} // ERROR "caller13c &Val literal does not escape$" "caller13c &p does not escape$"
- v.param13(&i) // ERROR "&i escapes to heap$"
+ v := &Val{&p} // ERROR "&Val{...} does not escape$"
+ v.param13(&i)
_ = v
}
i := 0 // ERROR "moved to heap: i$"
var p *int // ERROR "moved to heap: p$"
var v Val
- v.p = &p // ERROR "&p escapes to heap$"
- v.param13(&i) // ERROR "&i escapes to heap$"
- sink = v // ERROR "v escapes to heap$"
+ v.p = &p
+ v.param13(&i)
+ sink = v
}
func caller13e() {
- i := 0 // ERROR "moved to heap: i$"
- var p *int // ERROR "moved to heap: p$"
- v := Val{&p} // ERROR "&p escapes to heap$"
- v.param13(&i) // ERROR "&i escapes to heap$"
- sink = v // ERROR "v escapes to heap$"
+ i := 0 // ERROR "moved to heap: i$"
+ var p *int // ERROR "moved to heap: p$"
+ v := Val{&p}
+ v.param13(&i)
+ sink = v
}
func caller13f() {
i := 0 // ERROR "moved to heap: i$"
var p *int // ERROR "moved to heap: p$"
- v := &Val{&p} // ERROR "&Val literal escapes to heap$" "&p escapes to heap$"
- v.param13(&i) // ERROR "&i escapes to heap$"
- sink = v // ERROR "v escapes to heap$"
+ v := &Val{&p} // ERROR "&Val{...} escapes to heap$"
+ v.param13(&i)
+ sink = v
}
func caller13g() {
i := 0 // ERROR "moved to heap: i$"
var p *int
- v := Val{&p} // ERROR "caller13g &p does not escape$"
- v.param13(&i) // ERROR "&i escapes to heap$"
- sink = *v.p // ERROR "\*v\.p escapes to heap"
+ v := Val{&p}
+ v.param13(&i)
+ sink = *v.p
}
func caller13h() {
i := 0 // ERROR "moved to heap: i$"
var p *int
- v := &Val{&p} // ERROR "caller13h &Val literal does not escape$" "caller13h &p does not escape$"
- v.param13(&i) // ERROR "&i escapes to heap$"
- sink = **v.p // ERROR "\* \(\*v\.p\) escapes to heap"
+ v := &Val{&p} // ERROR "&Val{...} does not escape$"
+ v.param13(&i)
+ sink = **v.p // ERROR "\*\(\*v\.p\) escapes to heap"
}
type Node struct {
var Sink *Node
func f(x *Node) { // ERROR "leaking param content: x"
- Sink = &Node{x.p} // ERROR "&Node literal escapes to heap"
+ Sink = &Node{x.p} // ERROR "&Node{...} escapes to heap"
}
-func g(x *Node) *Node { // ERROR "leaking param: x to result ~r1 level=0"
- return &Node{x.p} // ERROR "&Node literal escapes to heap"
+func g(x *Node) *Node { // ERROR "leaking param content: x"
+ return &Node{x.p} // ERROR "&Node{...} escapes to heap"
}
func h(x *Node) { // ERROR "leaking param: x"
- y := &Node{x} // ERROR "h &Node literal does not escape"
+ y := &Node{x} // ERROR "&Node{...} does not escape"
Sink = g(y)
f(y)
}
+
+// interface(in) -> out
+// See also issue 29353.
+
+// Convert to a non-direct interface, require an allocation and
+// copy x to heap (not to result).
+func param14a(x [4]*int) interface{} { // ERROR "leaking param: x$"
+ return x // ERROR "x escapes to heap"
+}
+
+// Convert to a direct interface, does not need an allocation.
+// So x only leaks to result.
+func param14b(x *int) interface{} { // ERROR "leaking param: x to result ~r0 level=0"
+ return x
+}