| Issue |
95280
|
| Summary |
[C++] NRVO doesn't elide move when return type is a placeholder in a function template
|
| Labels |
new issue
|
| Assignees |
|
| Reporter |
MitalAshok
|
Looking at the assembly output for this <https://godbolt.org/z/6eG7TWvvd>:
```c++
struct test {
test();
test(test&&);
};
auto f1() {
test t;
return t;
}
template<typename = void>
auto f2() {
test t;
return t;
}
template<typename = void>
test f3() {
test t;
return t;
}
template auto f2();
template test f3();
```
Shows that the move is elided in `f1` and `f3`, but not in `f2`. This also happens if the placeholder is `decltype(auto)`
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