[Bug other/92606] [8/9/10 Regression][avr] invalid merge of symbols in progmem and data sections

[gjl at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92606

--- Comment #4 from Georg-Johann Lay <gjl at gcc dot gnu.org> ---
The problem is that there isn't even a target hook to disallow such
optimizations, files as as PR92932.

In a respective hook, at least the attributes and address spaces of either
object must be available.