| // Copyright 2020 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. | |
| package main | |
| // Test passing C struct to exported Go function. | |
| /* | |
| #include <stdint.h> | |
| #include <stdlib.h> | |
| // T is a C struct with alignment padding after b. | |
| // The padding bytes are not considered initialized by MSAN. | |
| // It is big enough to be passed on stack in C ABI (and least | |
| // on AMD64). | |
| typedef struct { char b; uintptr_t x, y; } T; | |
| extern void F(T); | |
| // Use weak as a hack to permit defining a function even though we use export. | |
| void CF(int x) __attribute__ ((weak)); | |
| void CF(int x) { | |
| T *t = malloc(sizeof(T)); | |
| t->b = (char)x; | |
| t->x = x; | |
| t->y = x; | |
| F(*t); | |
| } | |
| */ | |
| import "C" | |
| //export F | |
| func F(t C.T) { println(t.b, t.x, t.y) } | |
| func main() { | |
| C.CF(C.int(0)) | |
| } | |