compiler-rt/test/BlocksRuntime/recursive-block.c

   1 //
   2 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   3 // See https://llvm.org/LICENSE.txt for license information.
   4 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   5
   6 #include <stdio.h>
   7 #include <Block.h>
   8 #include <Block_private.h>
   9 #include <stdlib.h>
  10
  11 // CONFIG
  12
  13
  14 int cumulation = 0;
  15
  16 int doSomething(int i) {
  17     cumulation += i;
  18     return cumulation;
  19 }
  20
  21 void dirtyStack() {
  22     int i = random();
  23     int j = doSomething(i);
  24     int k = doSomething(j);
  25     doSomething(i + j + k);
  26 }
  27
  28 typedef void (^voidVoid)(void);
  29
  30 voidVoid testFunction() {
  31     int i = random();
  32     __block voidVoid inner = ^{ doSomething(i); };
  33     //printf("inner, on stack, is %p\n", (void*)inner);
  34     /*__block*/ voidVoid outer = ^{
  35         //printf("will call inner block %p\n", (void *)inner);
  36         inner();
  37     };
  38     //printf("outer looks like: %s\n", _Block_dump(outer));
  39     voidVoid result = Block_copy(outer);
  40     //Block_release(inner);
  41     return result;
  42 }
  43
  44
  45 int main(int argc, char **argv) {
  46     voidVoid block = testFunction();
  47     dirtyStack();
  48     block();
  49     Block_release(block);
  50
  51     printf("%s: success\n", argv[0]);
  52
  53     return 0;
  54 }