[Bug target/86040] [avr]: RAMPZ is not always cleared after loading __flashN data

[gjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86040

--- Comment #4 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
Created attachment 44412
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=44412&action=edit
C test case.