[Bug target/71151] [avr] -fmerge-constants and -fdata-sections/-ffunction-sections results in string constants in .progmem.gcc_sw section

[anatol.pomozov at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71151

--- Comment #5 from Anatol <anatol.pomozov at gmail dot com> ---
This bug has been reported by Arch Linux users.
https://bugs.archlinux.org/task/49284

It is a severe compiler issue that stop avr-gcc 6 from using. Consider changing
"Importance" status to blocker.