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.

110 lines
1.8 KiB

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
int bar() {
auto func = []() {
int i = 0;
return i;
};
return 7 / func();
}
int foo() {
auto unused = []() { return 1 / 0; };
auto y = [](int i) { return ++i; };
return 5 / (4 - y(3));
}
int fooOK() {
auto y = [](int i) { return i++; };
return 5 / (4 - y(3));
}
int normal_capture() {
int x = 1;
int y = 2;
return [x, y]() { return x + y; }();
}
int capture_by_ref() {
int x = 0;
[&x]() { x++; }();
return x;
}
int init_capture1() {
return [i = 0]() { return i; }();
}
int init_capture2() {
int i = 0;
return [a = i, b = 0, c = 3]() { return a + b + c; }();
}
class Capture {
void capture_this_explicit() {
auto lambda = [this]() { return this; };
}
void capture_star_this() {
auto lambda = [*this]() {
};
}
void capture_this_with_equal() {
auto lambda = [=]() { return this; };
}
void capture_this_with_auto() {
auto lambda = [&]() { return this; };
}
};
struct SomeStruct {
int f;
~SomeStruct();
};
int struct_capture() {
SomeStruct x;
SomeStruct y;
auto f = [x, y]() { return x.f + y.f; };
return f();
}
int ref_capture_by_value() {
int x = 0;
int& xref = x;
auto f = [xref]() { return xref + 1; };
int ret = f();
return ret;
}
int ref_init_capture_by_value() {
int x = 0;
int& xref = x;
auto f = [xlambda = xref]() { return xlambda + 1; };
int ret = f();
return ret;
}
int ref_capture_by_ref() {
int x = 0;
int& xref = x;
[&xref]() { xref++; }();
return xref;
}
int ref_init_capture_by_ref() {
int x = 0;
int& xref = x;
[& xlambda = xref]() { xlambda++; }();
return xref;
}