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