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// RUN: %clang_cc1 -std=c++20 -fsyntax-only -verify %s
#include "Inputs/std-coroutine.h"
struct resumable {
struct promise_type {
resumable get_return_object() { return {}; }
auto initial_suspend() { return std::suspend_always(); }
auto final_suspend() noexcept { return std::suspend_always(); }
void unhandled_exception() {}
void return_void(){};
};
};
resumable f1(int &out, int *inst) {
static void* dispatch_table[] = {&&inc, // expected-error {{the GNU address of label extension is not allowed in coroutines}}
&&suspend, // expected-error {{the GNU address of label extension is not allowed in coroutines}}
&&stop}; // expected-error {{the GNU address of label extension is not allowed in coroutines}}
#define DISPATCH() goto *dispatch_table[*inst++]
inc:
out++;
DISPATCH();
suspend:
co_await std::suspend_always{};
DISPATCH();
stop:
co_return;
}
resumable f2(int &out, int *inst) {
void* dispatch_table[] = {nullptr, nullptr, nullptr};
dispatch_table[0] = &&inc; // expected-error {{the GNU address of label extension is not allowed in coroutines}}
dispatch_table[1] = &&suspend; // expected-error {{the GNU address of label extension is not allowed in coroutines}}
dispatch_table[2] = &&stop; // expected-error {{the GNU address of label extension is not allowed in coroutines}}
#define DISPATCH() goto *dispatch_table[*inst++]
inc:
out++;
DISPATCH();
suspend:
co_await std::suspend_always{};
DISPATCH();
stop:
co_return;
}
resumable f3(int &out, int *inst) {
void* dispatch_table[] = {nullptr, nullptr, nullptr};
[&]() -> resumable {
dispatch_table[0] = &&inc; // expected-error {{the GNU address of label extension is not allowed in coroutines}}
dispatch_table[1] = &&suspend; // expected-error {{the GNU address of label extension is not allowed in coroutines}}
dispatch_table[2] = &&stop; // expected-error {{the GNU address of label extension is not allowed in coroutines}}
#define DISPATCH() goto *dispatch_table[*inst++]
inc:
out++;
DISPATCH();
suspend:
co_await std::suspend_always{};
DISPATCH();
stop:
co_return;
}();
co_return;
}
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