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e41f527f4d
Allow inlining of functions with switch statements as long as they don't contain a break or type switch. Fixes #13071 Change-Id: I057be351ea4584def1a744ee87eafa5df47a7f6d Reviewed-on: https://go-review.googlesource.com/20824 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
75 lines
1.5 KiB
Go
75 lines
1.5 KiB
Go
// errorcheck -0 -m
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// Copyright 2015 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Test, using compiler diagnostic flags, that inlining is working.
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// Compiles but does not run.
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package foo
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import "unsafe"
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func add2(p *byte, n uintptr) *byte { // ERROR "can inline add2" "leaking param: p to result"
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return (*byte)(add1(unsafe.Pointer(p), n)) // ERROR "inlining call to add1"
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}
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func add1(p unsafe.Pointer, x uintptr) unsafe.Pointer { // ERROR "can inline add1" "leaking param: p to result"
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return unsafe.Pointer(uintptr(p) + x)
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}
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func f(x *byte) *byte { // ERROR "can inline f" "leaking param: x to result"
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return add2(x, 1) // ERROR "inlining call to add2" "inlining call to add1"
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}
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//go:noinline
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func g(x int) int {
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return x + 1
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}
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func h(x int) int { // ERROR "can inline h"
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return x + 2
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}
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func i(x int) int { // ERROR "can inline i"
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const y = 2
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return x + y
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}
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func j(x int) int { // ERROR "can inline j"
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switch {
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case x > 0:
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return x + 2
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default:
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return x + 1
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}
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}
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// can't currently inline functions with a break statement
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func switchBreak(x, y int) int {
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var n int
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switch x {
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case 0:
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n = 1
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Done:
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switch y {
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case 0:
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n += 10
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break Done
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}
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n = 2
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}
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return n
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}
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// can't currently inline functions with a type switch
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func switchType(x interface{}) int { // ERROR "switchType x does not escape"
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switch x.(type) {
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case int:
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return x.(int)
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default:
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return 0
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}
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}
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