[Bug rtl-optimization/116780] [lra][avr] internal compiler error: output_operand: address operand requires constraint for X, Y, or Z register

[denisc at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116780

--- Comment #7 from denisc at gcc dot gnu.org ---
Clarification for simplified test case:
1. frame size is 0 (because a declaration of a local array has a zero size);
2. we have a local variable which can be addressable (althought it have a zero
size)