[Bug target/121277] New: [avr] Wrong code for (const __flashx char*) NULL

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121277

            Bug ID: 121277
           Summary: [avr] Wrong code for (const __flashx char*) NULL
           Product: gcc
           Version: 15.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: gjl at gcc dot gnu.org
  Target Milestone: ---

Upcasting the NULL pointer to const __flashx* will load 0x800000 since avr.cc
uses the same logic like for __memx.

Since __flashx doesn't cover generic space, this behaviour is wrong (confusing
at least).