| // RUN: %clang_cc1 -std=c++11 -fsyntax-only -verify %s -fblocks |
| |
| void tovoid(void*); |
| |
| void tovoid_test(int (^f)(int, int)) { |
| tovoid(f); |
| } |
| |
| void reference_lvalue_test(int& (^f)()) { |
| f() = 10; |
| } |
| |
| // PR 7165 |
| namespace test1 { |
| void g(void (^)()); |
| struct Foo { |
| void foo(); |
| void test() { |
| (void) ^{ foo(); }; |
| } |
| }; |
| } |
| |
| namespace test2 { |
| int repeat(int value, int (^block)(int), unsigned n) { |
| while (n--) value = block(value); |
| return value; |
| } |
| |
| class Power { |
| int base; |
| |
| public: |
| Power(int base) : base(base) {} |
| int calculate(unsigned n) { |
| return repeat(1, ^(int v) { return v * base; }, n); |
| } |
| }; |
| |
| int test() { |
| return Power(2).calculate(10); |
| } |
| } |
| |
| // rdar: // 8382559 |
| namespace radar8382559 { |
| void func(bool& outHasProperty); |
| |
| int test3() { |
| __attribute__((__blocks__(byref))) bool hasProperty = false; |
| bool has = true; |
| |
| bool (^b)() = ^ { |
| func(hasProperty); |
| if (hasProperty) |
| hasProperty = 0; |
| if (has) |
| hasProperty = 1; |
| return hasProperty; |
| }; |
| func(hasProperty); |
| func(has); |
| b(); |
| if (hasProperty) |
| hasProperty = 1; |
| if (has) |
| has = 2; |
| return hasProperty = 1; |
| } |
| } |
| |
| // Move __block variables to the heap when possible. |
| class MoveOnly { |
| public: |
| MoveOnly(); |
| MoveOnly(const MoveOnly&) = delete; |
| MoveOnly(MoveOnly&&); |
| }; |
| |
| void move_block() { |
| __block MoveOnly mo; |
| } |
| |
| // Don't crash after failing to build a block due to a capture of an |
| // invalid declaration. |
| namespace test5 { |
| struct B { // expected-note 2 {{candidate constructor}} |
| void *p; |
| B(int); // expected-note {{candidate constructor}} |
| }; |
| |
| void use_block(void (^)()); |
| void use_block_2(void (^)(), const B &a); |
| |
| void test() { |
| B x; // expected-error {{no matching constructor for initialization}} |
| use_block(^{ |
| int y; |
| use_block_2(^{ (void) y; }, x); |
| }); |
| } |
| } |
| |
| |
| // rdar://16356628 |
| // |
| // Ensure that we can end function bodies while parsing an |
| // expression that requires an explicitly-tracked cleanup object |
| // (i.e. a block literal). |
| |
| // The nested function body in this test case is a template |
| // instantiation. The template function has to be constexpr because |
| // we'll otherwise delay its instantiation to the end of the |
| // translation unit. |
| namespace test6a { |
| template <class T> constexpr int func() { return 0; } |
| void run(void (^)(), int); |
| |
| void test() { |
| int aCapturedVar = 0; |
| run(^{ (void) aCapturedVar; }, func<int>()); |
| } |
| } |
| |
| // The nested function body in this test case is a method of a local |
| // class. |
| namespace test6b { |
| void run(void (^)(), void (^)()); |
| void test() { |
| int aCapturedVar = 0; |
| run(^{ (void) aCapturedVar; }, |
| ^{ struct A { static void foo() {} }; |
| A::foo(); }); |
| } |
| } |
| |
| // The nested function body in this test case is a lambda invocation |
| // function. |
| namespace test6c { |
| void run(void (^)(), void (^)()); |
| void test() { |
| int aCapturedVar = 0; |
| run(^{ (void) aCapturedVar; }, |
| ^{ struct A { static void foo() {} }; |
| A::foo(); }); |
| } |
| } |
| |
| namespace test7 { |
| struct S {}; |
| void f() { |
| constexpr S s; |
| auto some_block = ^{ (void)s; }; |
| } |
| } |