github.com/bir3/gocompiler@v0.9.2202/src/cmd/cgo/internal/test/callback_c_gc.c (about)

     1  // Copyright 2013 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  //go:build gc
     6  
     7  #include "_cgo_export.h"
     8  #include <stdint.h>
     9  #include <stdio.h>
    10  #include <stdlib.h>
    11  
    12  /* Test calling panic from C.  This is what SWIG does.  */
    13  
    14  extern void crosscall2(void (*fn)(void *, int), void *, int);
    15  extern void _cgo_panic(void *, int);
    16  extern void _cgo_allocate(void *, int);
    17  
    18  void
    19  callPanic(void)
    20  {
    21  	struct { const char *p; } a;
    22  	a.p = "panic from C";
    23  	crosscall2(_cgo_panic, &a, sizeof a);
    24  	*(int*)1 = 1;
    25  }