llvm-project/compiler-rt/test/BlocksRuntime/nullblockisa.c

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2010-08-05 07:34:21 +08:00
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
// nullblockisa.m
// testObjects
//
// Created by Blaine Garst on 9/24/08.
//
// CONFIG rdar://6244520
#include <stdio.h>
#include <stdlib.h>
#include <Block_private.h>
void check(void (^b)(void)) {
struct _custom {
struct Block_layout layout;
struct Block_byref *innerp;
} *custom = (struct _custom *)(void *)(b);
//printf("block is at %p, size is %lx, inner is %p\n", (void *)b, Block_size(b), innerp);
if (custom->innerp->isa != (void *)NULL) {
printf("not a NULL __block isa\n");
exit(1);
}
return;
}
int main(int argc, char *argv[]) {
__block int i;
check(^{ printf("%d\n", ++i); });
printf("%s: success\n", argv[0]);
return 0;
}