https://gcc.gnu.org/bugzilla/show_bug.cgi?id=115504
Bug ID: 115504
Summary: Wrong decltype result for a captured reference inside
limbda
Product: gcc
Version: 14.1.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: fchelnokov at gmail dot com
Target Milestone: ---
This program
```
template<class T> int foo() = delete;
template<> int foo<int&>() { return 0; }
int main() {
int y = 0;
int &i = y;
return [&i]() {
decltype(auto) x = i;
return foo<decltype(x)>();
}();
}
```
is accepted in Clang, MSVC and GCC 13.3, but not in GCC 14, which thinks that
`decltype(x)=int`. Online demo: https://gcc.godbolt.org/z/fc1nrP4P9
Related discussion: https://stackoverflow.com/a/78626163/7325599
