[Bug c++/124632] [16 Regression] gcc/cp/pt.cc:9665:27: runtime error: index 42405 out of bounds for t ype 'tree_code_class [389]'

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124632

--- Comment #2 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The unsharing and later freeing is done on the
main()::<lambda(this auto:6, int)>::operator()<main()::<lambda(this auto:6,
int)> > (cl5, <<< Unknown tree: empty_class_expr >>>, 5);
call which is the last call to lambda in main, while the remembering of it is
done while dealing with the recursive call
main()::<lambda(this auto:6, int)>::operator()<main()::<lambda(this auto:6,
int)> > (self, <<< Unknown tree: empty_class_expr >>>,
VIEW_CONVERT_EXPR<int>(n) - 1);
Perhaps we need to unshare the constructor somewhere.