mirror of
https://github.com/capstone-engine/llvm-capstone.git
synced 2025-04-14 20:32:24 +00:00
7345626a5b
[expr.prim.lambda]p4, including the current suggested resolution of core isue 975, which allows multiple return statements so long as the types match. ExtWarn when user code is actually making use of this extension. llvm-svn: 150168
89 lines
4.1 KiB
C++
89 lines
4.1 KiB
C++
// RUN: %clang_cc1 -std=c++0x -Wno-unused-value -fsyntax-only -verify -fblocks %s
|
|
|
|
namespace std { class type_info; };
|
|
|
|
namespace ExplicitCapture {
|
|
class C {
|
|
int Member;
|
|
|
|
static void Overload(int);
|
|
void Overload();
|
|
virtual C& Overload(float);
|
|
|
|
void ImplicitThisCapture() {
|
|
[](){(void)Member;}; // expected-error {{'this' cannot be implicitly captured in this context}}
|
|
[&](){(void)Member;};
|
|
|
|
[this](){(void)Member;};
|
|
[this]{[this]{};};
|
|
[]{[this]{};};// expected-error {{'this' cannot be implicitly captured in this context}}
|
|
[]{Overload(3);};
|
|
[]{Overload();}; // expected-error {{'this' cannot be implicitly captured in this context}}
|
|
[]{(void)typeid(Overload());};
|
|
[]{(void)typeid(Overload(.5f));};// expected-error {{'this' cannot be implicitly captured in this context}}
|
|
}
|
|
};
|
|
|
|
void f() {
|
|
[this] () {}; // expected-error {{'this' cannot be captured in this context}}
|
|
}
|
|
}
|
|
|
|
namespace ReturnDeduction {
|
|
void test() {
|
|
[](){ return 1; };
|
|
[](){ return 1; };
|
|
[](){ return ({return 1; 1;}); };
|
|
[](){ return ({return 'c'; 1;}); }; // expected-error {{must match previous return type}} \
|
|
// expected-warning{{omitted result type}}
|
|
[]()->int{ return 'c'; return 1; };
|
|
[](){ return 'c'; return 1; }; // expected-error {{must match previous return type}}
|
|
[]() { return; return (void)0; };
|
|
[](){ return 1; return 1; }; // expected-warning{{omitted result type}}
|
|
}
|
|
}
|
|
|
|
namespace ImplicitCapture {
|
|
void test() {
|
|
int a = 0; // expected-note 5 {{declared}}
|
|
[]() { return a; }; // expected-error {{variable 'a' cannot be implicitly captured in a lambda with no capture-default specified}} expected-note {{begins here}}
|
|
[&]() { return a; };
|
|
[=]() { return a; };
|
|
[=]() { int* b = &a; }; // expected-error {{cannot initialize a variable of type 'int *' with an rvalue of type 'const int *'}}
|
|
[=]() { return [&]() { return a; }; };
|
|
[]() { return [&]() { return a; }; }; // expected-error {{variable 'a' cannot be implicitly captured in a lambda with no capture-default specified}} expected-note {{lambda expression begins here}}
|
|
[]() { return ^{ return a; }; };// expected-error {{variable 'a' cannot be implicitly captured in a lambda with no capture-default specified}} expected-note {{lambda expression begins here}}
|
|
[]() { return [&a] { return a; }; }; // expected-error 2 {{variable 'a' cannot be implicitly captured in a lambda with no capture-default specified}} expected-note 2 {{lambda expression begins here}}
|
|
[=]() { return [&a] { return a; }; }; //
|
|
|
|
const int b = 2;
|
|
[]() { return b; };
|
|
|
|
union { // expected-note {{declared}}
|
|
int c;
|
|
float d;
|
|
};
|
|
d = 3;
|
|
[=]() { return c; }; // expected-error {{unnamed variable cannot be implicitly captured in a lambda expression}}
|
|
|
|
__block int e; // expected-note 3 {{declared}}
|
|
[&]() { return e; }; // expected-error {{__block variable 'e' cannot be captured in a lambda expression}}
|
|
[&e]() { return e; }; // expected-error 2 {{__block variable 'e' cannot be captured in a lambda expression}}
|
|
|
|
int f[10]; // expected-note {{declared}}
|
|
[&]() { return f[2]; };
|
|
(void) ^{ return []() { return f[2]; }; }; // expected-error {{cannot refer to declaration with an array type inside block}}
|
|
|
|
struct G { G(); G(G&); int a; }; // expected-note 6 {{not viable}}
|
|
G g;
|
|
[=]() { const G* gg = &g; return gg->a; }; // expected-warning{{omitted result type}}
|
|
[=]() { return [=]{ const G* gg = &g; return gg->a; }(); }; // expected-error {{no matching constructor for initialization of 'const ImplicitCapture::G'}} \
|
|
// expected-warning{{omitted result type}}
|
|
(void)^{ return [=]{ const G* gg = &g; return gg->a; }(); }; // expected-error 2 {{no matching constructor for initialization of 'const ImplicitCapture::G'}} \
|
|
// expected-warning{{omitted result type}}
|
|
|
|
const int h = a; // expected-note {{declared}}
|
|
[]() { return h; }; // expected-error {{variable 'h' cannot be implicitly captured in a lambda with no capture-default specified}} expected-note {{lambda expression begins here}}
|
|
}
|
|
}
|