1 // Copyright 2017 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package cgotest 6 7 // Issue 21809. Compile C `typedef` to go type aliases. 8 9 // typedef long MySigned_t; 10 // /* tests alias-to-alias */ 11 // typedef MySigned_t MySigned2_t; 12 // 13 // long takes_long(long x) { return x * x; } 14 // MySigned_t takes_typedef(MySigned_t x) { return x * x; } 15 import "C" 16 17 import "testing" 18 19 func test21809(t *testing.T) { 20 longVar := C.long(3) 21 typedefVar := C.MySigned_t(4) 22 typedefTypedefVar := C.MySigned2_t(5) 23 24 // all three should be considered identical to `long` 25 if ret := C.takes_long(longVar); ret != 9 { 26 t.Errorf("got %v but expected %v", ret, 9) 27 } 28 if ret := C.takes_long(typedefVar); ret != 16 { 29 t.Errorf("got %v but expected %v", ret, 16) 30 } 31 if ret := C.takes_long(typedefTypedefVar); ret != 25 { 32 t.Errorf("got %v but expected %v", ret, 25) 33 } 34 35 // They should also be identical to the typedef'd type 36 if ret := C.takes_typedef(longVar); ret != 9 { 37 t.Errorf("got %v but expected %v", ret, 9) 38 } 39 if ret := C.takes_typedef(typedefVar); ret != 16 { 40 t.Errorf("got %v but expected %v", ret, 16) 41 } 42 if ret := C.takes_typedef(typedefTypedefVar); ret != 25 { 43 t.Errorf("got %v but expected %v", ret, 25) 44 } 45 } 46
