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// 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(); });
}
}
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