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

   1 //
   2 //                     The LLVM Compiler Infrastructure
   3 //
   4 // This file is distributed under the University of Illinois Open Source
   5 // License. See LICENSE.TXT for details.
   6
   7 #include <stdio.h>
   8 #include <Block.h>
   9 #include <Block_private.h>
  10 #include <stdlib.h>
  11
  12 // CONFIG
  13
  14
  15 int cumulation = 0;
  16
  17 int doSomething(int i) {
  18     cumulation += i;
  19     return cumulation;
  20 }
  21
  22 void dirtyStack() {
  23     int i = random();
  24     int j = doSomething(i);
  25     int k = doSomething(j);
  26     doSomething(i + j + k);
  27 }
  28
  29 typedef void (^voidVoid)(void);
  30
  31 voidVoid testFunction() {
  32     int i = random();
  33     __block voidVoid inner = ^{ doSomething(i); };
  34     //printf("inner, on stack, is %p\n", (void*)inner);
  35     /*__block*/ voidVoid outer = ^{
  36         //printf("will call inner block %p\n", (void *)inner);
  37         inner();
  38     };
  39     //printf("outer looks like: %s\n", _Block_dump(outer));
  40     voidVoid result = Block_copy(outer);
  41     //Block_release(inner);
  42     return result;
  43 }
  44
  45
  46 int main(int argc, char **argv) {
  47     voidVoid block = testFunction();
  48     dirtyStack();
  49     block();
  50     Block_release(block);
  51
  52     printf("%s: success\n", argv[0]);
  53
  54     return 0;
  55 }