c3c/test/test_suite/generic/recursive_generic.c3

module test;
import test1;

fn int main() => 0;

Aa {int} a;

module test1 {Type};
import test2;
alias Cc = Aa {Bb {Type}}; // #error: Generic resolution of this type has become deeply nested
struct Aa {Type a;}

module test2 {Type};
struct Bb {Type b;}