1
false
false
2
true
false
3
true
false
Uninitialized attribute _a2 (alt/base_attr_isset_alt3.nit)
,---- Stack trace -- - -  -
| check new Foo (alt/base_attr_isset_alt3.nit:0)
| new Foo base_attr_isset_alt3::Foo::init (alt/base_attr_isset_alt3.nit:53)
| base_attr_isset_alt3::Sys::main (alt/base_attr_isset_alt3.nit:100)
`------------------- - -  -