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-rw-r--r--test/escape4.go57
1 files changed, 57 insertions, 0 deletions
diff --git a/test/escape4.go b/test/escape4.go
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+++ b/test/escape4.go
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+// errorcheck -0 -m
+
+// Copyright 2010 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, using compiler diagnostic flags, that the escape analysis is working.
+// Compiles but does not run. Inlining is enabled.
+
+package foo
+
+var p *int
+
+func alloc(x int) *int { // ERROR "can inline alloc" "moved to heap: x"
+ return &x
+}
+
+var f func()
+
+func f1() {
+ p = alloc(2) // ERROR "inlining call to alloc" "moved to heap: x"
+
+ // Escape analysis used to miss inlined code in closures.
+
+ func() { // ERROR "can inline f1.func1"
+ p = alloc(3) // ERROR "inlining call to alloc"
+ }() // ERROR "inlining call to f1.func1" "inlining call to alloc" "moved to heap: x"
+
+ f = func() { // ERROR "func literal escapes to heap" "can inline f1.func2"
+ p = alloc(3) // ERROR "inlining call to alloc" "moved to heap: x"
+ }
+ f()
+}
+
+func f2() {} // ERROR "can inline f2"
+
+// No inline for recover; panic now allowed to inline.
+func f3() { panic(1) } // ERROR "can inline f3" "1 escapes to heap"
+func f4() { recover() }
+
+func f5() *byte { // ERROR "can inline f5"
+ type T struct {
+ x [1]byte
+ }
+ t := new(T) // ERROR "new.T. escapes to heap"
+ return &t.x[0]
+}
+
+func f6() *byte { // ERROR "can inline f6"
+ type T struct {
+ x struct {
+ y byte
+ }
+ }
+ t := new(T) // ERROR "new.T. escapes to heap"
+ return &t.x.y
+}