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| // RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s -fblocks
void test_nest_lambda() {
int x;
int y;
[&,y]() {
int z;
#pragma clang __debug captured
{
x = y; // OK
y = z; // expected-error{{cannot assign to a variable captured by copy in a non-mutable lambda}}
z = y; // OK
}
}();
int a;
#pragma clang __debug captured
{
int b;
int c;
[&,c]() {
a = b; // OK
b = c; // OK
c = a; // expected-error{{cannot assign to a variable captured by copy in a non-mutable lambda}}
}();
}
}
class test_obj_capture {
int a;
void b();
static void test() {
test_obj_capture c;
#pragma clang __debug captured
{ (void)c.a; } // OK
#pragma clang __debug captured
{ c.b(); } // OK
}
};
class test_this_capture {
int a;
void b();
void test() {
#pragma clang __debug captured
{ (void)this; } // OK
#pragma clang __debug captured
{ (void)a; } // OK
#pragma clang __debug captured
{ b(); } // OK
}
};
template <typename T>
void template_capture_var() {
T x; // expected-error{{declaration of reference variable 'x' requires an initializer}}
#pragma clang _debug captured
{
(void)x;
}
}
template <typename T>
class Val {
T v;
public:
void set(const T &v0) {
#pragma clang __debug captured
{
v = v0;
}
}
};
void test_capture_var() {
template_capture_var<int>(); // OK
template_capture_var<int&>(); // expected-note{{in instantiation of function template specialization 'template_capture_var<int &>' requested here}}
Val<float> Obj;
Obj.set(0.0f); // OK
}
template <typename S, typename T>
S template_capture_var(S x, T y) { // expected-note{{variable 'y' declared const here}}
#pragma clang _debug captured
{
x++;
y++; // expected-error{{cannot assign to variable 'y' with const-qualified type 'const int'}}
}
return x;
}
// Check if can recover from a template error.
void test_capture_var_error() {
template_capture_var<int, int>(0, 1); // OK
template_capture_var<int, const int>(0, 1); // expected-note{{in instantiation of function template specialization 'template_capture_var<int, const int>' requested here}}
template_capture_var<int, int>(0, 1); // OK
}
template <typename T>
void template_capture_in_lambda() {
T x, y;
[=, &y]() {
#pragma clang __debug captured
{
y += x;
}
}();
}
void test_lambda() {
template_capture_in_lambda<int>(); // OK
}
struct Foo {
void foo() { }
static void bar() { }
};
template <typename T>
void template_capture_func(T &t) {
#pragma clang __debug captured
{
t.foo();
}
#pragma clang __debug captured
{
T::bar();
}
}
void test_template_capture_func() {
Foo Obj;
template_capture_func(Obj);
}
template <typename T>
T captured_sum(const T &a, const T &b) {
T result;
#pragma clang __debug captured
{
result = a + b;
}
return result;
}
template <typename T, typename... Args>
T captured_sum(const T &a, const Args&... args) {
T result;
#pragma clang __debug captured
{
result = a + captured_sum(args...);
}
return result;
}
void test_capture_variadic() {
(void)captured_sum(1, 2, 3); // OK
(void)captured_sum(1, 2, 3, 4, 5); // OK
}
void test_capture_with_attributes() {
[[]] // expected-error {{an attribute list cannot appear here}}
#pragma clang __debug captured
{
}
}
|