File: cxx20-coroutines.cpp

package info (click to toggle)
llvm-toolchain-17 1%3A17.0.6-22
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid, trixie
  • size: 1,799,624 kB
  • sloc: cpp: 6,428,607; ansic: 1,383,196; asm: 793,408; python: 223,504; objc: 75,364; f90: 60,502; lisp: 33,869; pascal: 15,282; sh: 9,684; perl: 7,453; ml: 4,937; awk: 3,523; makefile: 2,889; javascript: 2,149; xml: 888; fortran: 619; cs: 573
file content (35 lines) | stat: -rw-r--r-- 967 bytes parent folder | download | duplicates (10) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
 
// RUN: %clang_cc1 -std=c++20 %s -verify

template<typename T, typename U>
U f(T t) {
  co_await t;
  co_yield t;

  1 + co_await t;
  1 + co_yield t; // expected-error {{expected expression}}

  auto x = co_await t;
  auto y = co_yield t;

  for co_await (int x : t) {} // expected-warning {{'for co_await' belongs to CoroutineTS instead of C++20, which is deprecated}}
  for co_await (int x = 0; x != 10; ++x) {} // expected-error {{'co_await' modifier can only be applied to range-based for loop}}

  if (t)
    co_return t;
  else
    co_return {t};
}

struct Y {};
struct X { Y operator co_await(); };
struct Z {};
Y operator co_await(Z);

void f(X x, Z z) {
  x.operator co_await();
  operator co_await(z);
}

void operator co_await(); // expected-error {{must have at least one parameter}}
void operator co_await(X, Y, Z); // expected-error {{must be a unary operator}}
void operator co_await(int); // expected-error {{parameter of class or enumeration type}}