1 // errorcheck -0 -m 2 3 // Copyright 2015 The Go Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style 5 // license that can be found in the LICENSE file. 6 7 // Test, using compiler diagnostic flags, that inlining is working. 8 // Compiles but does not run. 9 10 package foo 11 12 import "unsafe" 13 14 func add2(p *byte, n uintptr) *byte { // ERROR "can inline add2" "leaking param: p to result" 15 return (*byte)(add1(unsafe.Pointer(p), n)) // ERROR "inlining call to add1" 16 } 17 18 func add1(p unsafe.Pointer, x uintptr) unsafe.Pointer { // ERROR "can inline add1" "leaking param: p to result" 19 return unsafe.Pointer(uintptr(p) + x) 20 } 21 22 func f(x *byte) *byte { // ERROR "can inline f" "leaking param: x to result" 23 return add2(x, 1) // ERROR "inlining call to add2" "inlining call to add1" 24 } 25 26 //go:noinline 27 func g(x int) int { 28 return x + 1 29 } 30 31 func h(x int) int { // ERROR "can inline h" 32 return x + 2 33 } 34 35 func i(x int) int { // ERROR "can inline i" 36 const y = 2 37 return x + y 38 } 39 40 func j(x int) int { // ERROR "can inline j" 41 switch { 42 case x > 0: 43 return x + 2 44 default: 45 return x + 1 46 } 47 } 48 49 // can't currently inline functions with a break statement 50 func switchBreak(x, y int) int { 51 var n int 52 switch x { 53 case 0: 54 n = 1 55 Done: 56 switch y { 57 case 0: 58 n += 10 59 break Done 60 } 61 n = 2 62 } 63 return n 64 } 65 66 // can't currently inline functions with a type switch 67 func switchType(x interface{}) int { // ERROR "switchType x does not escape" 68 switch x.(type) { 69 case int: 70 return x.(int) 71 default: 72 return 0 73 } 74 } 75
