https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89686
Bug ID: 89686
Summary: Lambda pack capture with pack on both sides
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: barry.revzin at gmail dot com
Target Milestone: ---
Vittorio, the wizard of lambda+pack bugs, is at it again:
https://stackoverflow.com/questions/55127906/lambda-pack-capture-with-ellipsis-on-both-sides-what-is-the-meaning
template <typename... Ts>
void foo(Ts... xs)
{
[...xs...]{}();
}
int main()
{
foo(0, 1, 2);
}
gcc trunk accepts this, but it should be ill-formed - you can't have ellipses
on both sides. Gotta be either simple-capture [...xs] or init-capture
[...xs=xs]
