1// Copyright 2017 The Chromium Authors 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5// This is a "No Compile Test" suite. 6// http://dev.chromium.org/developers/testing/no-compile-tests 7 8#include "base/task/task_traits.h" 9 10namespace base { 11 12constexpr TaskTraits traits = {MayBlock(), MayBlock()}; // expected-error {{constexpr variable 'traits' must be initialized by a constant expression}} 13 // expected-error@base/traits_bag.h:* {{The traits bag contains multiple traits of the same type.}} 14 15constexpr TaskTraits traits2 = {WithBaseSyncPrimitives(), // expected-error {{constexpr variable 'traits2' must be initialized by a constant expression}} 16 WithBaseSyncPrimitives()}; // expected-error@base/traits_bag.h:* {{The traits bag contains multiple traits of the same type.}} 17 18constexpr TaskTraits traits3 = {TaskPriority::BEST_EFFORT, // expected-error {{constexpr variable 'traits3' must be initialized by a constant expression}} 19 TaskPriority::USER_BLOCKING}; // expected-error@base/traits_bag.h:* {{The traits bag contains multiple traits of the same type.}} 20 // expected-error@*:* {{type occurs more than once in type list}} 21 22// Note: the three repetitions of "The traits bag contains multiple traits of 23// the same type." is *not* an error. Writing this really does cause three 24// occurrences of the same error message! 25constexpr TaskTraits traits4 = {TaskShutdownBehavior::BLOCK_SHUTDOWN, // expected-error {{constexpr variable 'traits4' must be initialized by a constant expression}} 26 TaskShutdownBehavior::BLOCK_SHUTDOWN}; // expected-error@base/traits_bag.h:* {{The traits bag contains multiple traits of the same type.}} 27 // expected-error@base/traits_bag.h:* {{The traits bag contains multiple traits of the same type.}} 28 // expected-error@*:* {{type occurs more than once in type list}} 29 // expected-error@base/traits_bag.h:* {{The traits bag contains multiple traits of the same type.}} 30 31constexpr TaskTraits traits5 = {TaskShutdownBehavior::BLOCK_SHUTDOWN, // expected-error {{constexpr variable 'traits5' must be initialized by a constant expression}} 32 MayBlock(), // expected-error@base/traits_bag.h:* {{The traits bag contains multiple traits of the same type.}} 33 TaskShutdownBehavior::CONTINUE_ON_SHUTDOWN}; // expected-error@*:* {{type occurs more than once in type list}} 34 35constexpr TaskTraits traits6 = {TaskShutdownBehavior::BLOCK_SHUTDOWN, true}; // expected-error {{no matching constructor for initialization of 'const TaskTraits'}} 36 37} // namespace base 38