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-rw-r--r--test/escape_level.go108
1 files changed, 108 insertions, 0 deletions
diff --git a/test/escape_level.go b/test/escape_level.go
new file mode 100644
index 0000000..33ae540
--- /dev/null
+++ b/test/escape_level.go
@@ -0,0 +1,108 @@
+// errorcheck -0 -m -l
+
+// 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.
+
+// Test indirection level computation in escape analysis.
+
+package escape
+
+var sink interface{}
+
+func level0() {
+ i := 0 // ERROR "moved to heap: i"
+ p0 := &i // ERROR "moved to heap: p0"
+ p1 := &p0 // ERROR "moved to heap: p1"
+ p2 := &p1 // ERROR "moved to heap: p2"
+ sink = &p2
+}
+
+func level1() {
+ i := 0 // ERROR "moved to heap: i"
+ p0 := &i // ERROR "moved to heap: p0"
+ p1 := &p0 // ERROR "moved to heap: p1"
+ p2 := &p1
+ sink = p2
+}
+
+func level2() {
+ i := 0 // ERROR "moved to heap: i"
+ p0 := &i // ERROR "moved to heap: p0"
+ p1 := &p0
+ p2 := &p1
+ sink = *p2
+}
+
+func level3() {
+ i := 0 // ERROR "moved to heap: i"
+ p0 := &i
+ p1 := &p0
+ p2 := &p1
+ sink = **p2
+}
+
+func level4() {
+ i := 0 // ERROR "moved to heap: i"
+ p0 := &i // ERROR "moved to heap: p0"
+ p1 := &p0
+ p2 := p1 // ERROR "moved to heap: p2"
+ sink = &p2
+}
+
+func level5() {
+ i := 0 // ERROR "moved to heap: i"
+ p0 := &i // ERROR "moved to heap: p0"
+ p1 := &p0
+ p2 := p1
+ sink = p2
+}
+
+func level6() {
+ i := 0 // ERROR "moved to heap: i"
+ p0 := &i
+ p1 := &p0
+ p2 := p1
+ sink = *p2
+}
+
+func level7() {
+ i := 0 // ERROR "moved to heap: i"
+ p0 := &i
+ p1 := &p0
+ // note *p1 == &i
+ p2 := *p1 // ERROR "moved to heap: p2"
+ sink = &p2
+}
+
+func level8() {
+ i := 0 // ERROR "moved to heap: i"
+ p0 := &i
+ p1 := &p0
+ p2 := *p1
+ sink = p2
+}
+
+func level9() {
+ i := 0
+ p0 := &i
+ p1 := &p0
+ p2 := *p1
+ sink = *p2 // ERROR "\*p2 escapes to heap"
+}
+
+func level10() {
+ i := 0
+ p0 := &i
+ p1 := *p0
+ p2 := &p1
+ sink = *p2 // ERROR "\*p2 escapes to heap"
+}
+
+func level11() {
+ i := 0
+ p0 := &i
+ p1 := &p0
+ p2 := **p1 // ERROR "moved to heap: p2"
+ sink = &p2
+}