You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
118 lines
2.3 KiB
118 lines
2.3 KiB
/*
|
|
* Copyright (c) 2018 - present Facebook, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This source code is licensed under the BSD style license found in the
|
|
* LICENSE file in the root directory of this source tree. An additional grant
|
|
* of patent rights can be found in the PATENTS file in the same directory.
|
|
*/
|
|
#include <functional>
|
|
|
|
struct S {
|
|
int f;
|
|
|
|
S() { f = 1; }
|
|
};
|
|
|
|
int ref_capture_destroy_invoke_bad() {
|
|
std::function<int()> f;
|
|
{
|
|
S s;
|
|
f = [&s] { return s.f; };
|
|
} // destructor for s called here
|
|
return f(); // s used here
|
|
}
|
|
|
|
int implicit_ref_capture_destroy_invoke_bad() {
|
|
std::function<int()> f;
|
|
{
|
|
auto s = S();
|
|
f = [&] { return s.f; };
|
|
}
|
|
return f();
|
|
}
|
|
|
|
int reassign_lambda_capture_destroy_invoke_bad() {
|
|
std::function<int()> f;
|
|
{
|
|
auto s = S();
|
|
auto tmp = [&] { return s.f; };
|
|
f = tmp;
|
|
}
|
|
return f();
|
|
}
|
|
|
|
// frontend doesn't understand difference between capture-by-value and
|
|
// capture-by-ref, need to fix
|
|
int value_capture_destroy_invoke_ok() {
|
|
std::function<int()> f;
|
|
{
|
|
S s;
|
|
f = [s] { return s.f; };
|
|
}
|
|
return f();
|
|
}
|
|
|
|
// same thing here
|
|
int implicit_value_capture_destroy_invoke_ok() {
|
|
std::function<int()> f;
|
|
{
|
|
S s;
|
|
f = [=] { return s.f; };
|
|
}
|
|
return f();
|
|
}
|
|
|
|
int ref_capture_invoke_ok() {
|
|
std::function<int()> f;
|
|
int ret;
|
|
{
|
|
S s;
|
|
f = [&s] { return s.f; };
|
|
ret = f();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
void invoke_twice_ok() {
|
|
std::function<int()> f;
|
|
int ret;
|
|
{
|
|
S s;
|
|
f = [&s] { return s.f; };
|
|
f();
|
|
f();
|
|
}
|
|
}
|
|
|
|
std::function<int()> ref_capture_read_lambda_ok() {
|
|
std::function<int()> f;
|
|
int ret;
|
|
{
|
|
S s;
|
|
f = [&s] { return s.f; };
|
|
}
|
|
auto tmp =
|
|
f; // reading (but not invoking) the lambda doesn't use its captured vars
|
|
}
|
|
|
|
// we'll miss this because we count invoking a lambda object as a use of its
|
|
// captured vars, not the lambda object itself.
|
|
void FN_delete_lambda_then_call_bad() {
|
|
auto lambda = [] { return 1; };
|
|
~lambda();
|
|
return lambda();
|
|
}
|
|
|
|
// need to treat escaping as a use in order to catch this
|
|
std::function<int()> FN_ref_capture_return_lambda_bad() {
|
|
std::function<int()> f;
|
|
int ret;
|
|
{
|
|
S s;
|
|
f = [&s] { return s.f; };
|
|
}
|
|
return f; // if the caller invokes the lambda, it will try to read the invalid
|
|
// stack address
|
|
}
|