From ccd992355df7192993c666236047820244914598 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Tue, 16 Apr 2024 21:19:13 +0200 Subject: Adding upstream version 1.21.8. Signed-off-by: Daniel Baumann --- test/escape4.go | 57 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100644 test/escape4.go (limited to 'test/escape4.go') diff --git a/test/escape4.go b/test/escape4.go new file mode 100644 index 0000000..710eb75 --- /dev/null +++ b/test/escape4.go @@ -0,0 +1,57 @@ +// 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 +} -- cgit v1.2.3