MySensorsBootloader causes linker stack smashing on recent gcc versions

[nekromant]

Trying to compile this bootloader with gcc shipped with debian stable (bullseye) or debian testing results in a stack smashing during linking.

0 ✓ necromant @ silverblade ~/Projects/mysensors/MySensorsBootloaderRF24 $ avr-gcc --version
avr-gcc (GCC) 5.4.0
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

0 ✓ necromant @ silverblade ~/Projects/mysensors/MySensorsBootloaderRF24 $ dpkg -l|grep gcc-avr
ii  gcc-avr                                       1:5.4.0+Atmel3.6.2-2                             amd64        G2 ✗ necromant @ silverblade ~/Projects/mysensors/MySensorsBootloaderRF24 $ make -B
rm *.o
rm *.elf
rm *.hex
rm: невозможно удалить '*.hex': Нет такого файла или каталога
make: [Makefile:28: clean] Ошибка 1 (игнорирование)
"/usr/bin/avr-gcc" -funsigned-char -funsigned-bitfields -DF_CPU=1000000L -DBAUD_RATE=9600 -Os -ffunction-sections -fdata-sections -fpack-struct -fshort-enums -mrelax -Wall -Wextra -Wundef -pedantic -mmcu=atmega328p -c -std=gnu99 -MD -MP -MF "MYSBootloader.d" -MT"MYSBootloader.d" -MT"MYSBootloader.o"  MYSBootloader.c -o MYSBootloader.o
"/usr/bin/avr-gcc" -nostartfiles -Wl,-s -Wl,-static -Wl,-Map=".map" -Wl,--start-group -Wl,--end-group -Wl,--gc-sections -mrelax -Wl,-section-start=.text=0x7800 -mmcu=atmega328p   -o MYSBootloader.elf MYSBootloader.o -lm
collect2: fatal error: ld terminated with signal 6 [Аварийный останов]
compilation terminated.
*** stack smashing detected ***: terminated
make: *** [Makefile:34: MYSBootloader.elf] Ошибка 1