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function_ref_unittest.nc
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function_ref_unittest.nc
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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// This is a "No Compile Test" suite.
// http://dev.chromium.org/developers/testing/no-compile-tests
#include "base/bind.h"
#include "base/callback.h"
#include "base/functional/function_ref.h"
#include "third_party/abseil-cpp/absl/functional/function_ref.h"
namespace base {
#if defined(NCTEST_NO_IMPLICIT_VOIDIFY) // [r"note: candidate template ignored: requirement '[^']+' was not satisfied \[with Functor = \(lambda at [^)]+\)\]"]
void WontCompile() {
auto returns_int = [] () { return 42; };
FunctionRef<void()> ref(returns_int);
}
#elif defined(NCTEST_BIND_ONCE_TO_ABSL_FUNCTION_REF) // [r"fatal error: static assertion failed due to requirement 'AlwaysFalse<void \(\)>': base::Bind{Once,Repeating} require strong ownership: non-owning function references may not bound as the functor due to potential lifetime issues\."]
void WontCompile() {
[] (absl::FunctionRef<void()> ref) {
BindOnce(ref).Run();
}([] {});
}
#elif defined(NCTEST_BIND_REPEATING_TO_ABSL_FUNCTION_REF) // [r"fatal error: static assertion failed due to requirement 'AlwaysFalse<void \(\)>': base::Bind{Once,Repeating} require strong ownership: non-owning function references may not bound as the functor due to potential lifetime issues\."]
void WontCompile() {
[] (FunctionRef<void()> ref) {
BindRepeating(ref).Run();
}([] {});
}
#elif defined(NCTEST_BIND_ONCE_TO_BASE_FUNCTION_REF) // [r"fatal error: static assertion failed due to requirement 'AlwaysFalse<void \(\)>': base::Bind{Once,Repeating} require strong ownership: non-owning function references may not bound as the functor due to potential lifetime issues\."]
void WontCompile() {
[] (FunctionRef<void()> ref) {
BindOnce(ref).Run();
}([] {});
}
#elif defined(NCTEST_BIND_REPEATING_TO_BASE_FUNCTION_REF) // [r"fatal error: static assertion failed due to requirement 'AlwaysFalse<void \(\)>': base::Bind{Once,Repeating} require strong ownership: non-owning function references may not bound as the functor due to potential lifetime issues\."]
void WontCompile() {
[] (FunctionRef<void()> ref) {
BindRepeating(ref).Run();
}([] {});
}
#endif
} // namespace base