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// Copyright 2013 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.
// +build gc
#include "_cgo_export.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
/* Test calling panic from C. This is what SWIG does. */
extern void crosscall2(void (*fn)(void *, int), void *, int);
extern void _cgo_panic(void *, int);
extern void _cgo_allocate(void *, int);
void
callPanic(void)
{
struct { const char *p; } a;
a.p = "panic from C";
crosscall2(_cgo_panic, &a, sizeof a);
*(int*)1 = 1;
}
/* Test calling cgo_allocate from C. This is what SWIG does. */
typedef struct List List;
struct List
{
List *next;
int x;
};
void
callCgoAllocate(void)
{
int i;
struct { size_t n; void *ret; } a;
List *l, *head, **tail;
// Make sure this doesn't crash.
// And make sure it returns non-nil.
a.n = 0;
a.ret = 0;
crosscall2(_cgo_allocate, &a, sizeof a);
if(a.ret == 0) {
fprintf(stderr, "callCgoAllocate: alloc 0 returned nil\n");
exit(2);
}
head = 0;
tail = &head;
for(i=0; i<100; i++) {
a.n = sizeof *l;
crosscall2(_cgo_allocate, &a, sizeof a);
l = a.ret;
l->x = i;
l->next = 0;
*tail = l;
tail = &l->next;
}
gc();
l = head;
for(i=0; i<100; i++) {
if(l->x != i) {
fprintf(stderr, "callCgoAllocate: lost memory\n");
exit(2);
}
l = l->next;
}
if(l != 0) {
fprintf(stderr, "callCgoAllocate: lost memory\n");
exit(2);
}
}
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