https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109385
Bug ID: 109385
Summary: decltype in lambda causes internal compiler error
Product: gcc
Version: 12.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: stevenxia990430 at gmail dot com
Target Milestone: ---
The following program reports an internal compiler error: Segmentation fault
To quickly reproduce: https://gcc.godbolt.org/z/WPWjs116W
```
#include <vector>
#include <algorithm>
int main() {
auto sort_fn = [](auto... vals) {
return [=]() {
decltype(vals) vec;
}();
};
auto result = sort_fn();
}
```
Removing the decltype(vals) inside the lambda removes the internal compiler
error.
This crash seems to happen after and including gcc 8.1 to gcc 12.2
