test/CodeGen/blocks.c

   1 // RUN: %clang_cc1 -triple i386-unknown-unknown %s -emit-llvm -o %t -fblocks
   2 void (^f)(void) = ^{};
   3
   4 // rdar://6768379
   5 int f0(int (^a0)()) {
   6   return a0(1, 2, 3);
   7 }
   8
   9 // Verify that attributes on blocks are set correctly.
  10 typedef struct s0 T;
  11 struct s0 {
  12   int a[64];
  13 };
  14
  15 // RUN: grep 'internal void @__f2_block_invoke_0(.struct.s0\* sret .*, .*, .* byval .*)' %t
  16 struct s0 f2(struct s0 a0) {
  17   return ^(struct s0 a1){ return a1; }(a0);
  18 }
  19
  20 // This should not crash: rdar://6808051
  21 void *P = ^{
  22   void *Q = __func__;
  23 };
  24
  25 void (^test1)(void) = ^(void) {
  26   __block int i;
  27   ^ { i = 1; }();
  28 };
  29
  30 typedef double ftype(double);
  31 // It's not clear that we *should* support this syntax, but until that decision
  32 // is made, we should support it properly and not crash.
  33 ftype ^test2 = ^ftype {
  34   return 0;
  35 };
  36
  37 // rdar://problem/8605032
  38 void f3_helper(void (^)(void));
  39 void f3() {
  40   _Bool b = 0;
  41   f3_helper(^{ if (b) {} });
  42 }