Bug: Internal Compiler Error

[arock093]

Raspberry Pi Zero W
Board: Adafruit Trinket M0

I'm trying to compile and getting an internal compiler error.

arduino-cli compile --fqbn adafruit:samd:adafruit_trinket_m0 MyFirstSketch
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.3/cores/arduino/WInterrupts.c: In function 'detachInterrupt':
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.3/cores/arduino/WInterrupts.c:378:1: internal compiler error: Illegal instruction
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See https://gcc.gnu.org/bugs/ for instructions.
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.3/cores/arduino/cortex_handlers.c: In function 'Reset_Handler':
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.3/cores/arduino/cortex_handlers.c:543:1: internal compiler error: Illegal instruction
}

I am able to compile for a different board.

arduino-cli compile --fqbn arduino:avr:mega MyFirstSketch
Sketch uses 1536 bytes (0%) of program storage space. Maximum is 253952 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 8183 bytes for local variables. Maximum is 8192 bytes.

I am also able to compile the sketch for the board on a different computer.

Using a Raspberry Pi 4, the sketch compiles without any issues for the Adafruit Trinket M0 board. This leads me to believe the issue has something to due with the relationship between the Rasperry Pi Zero W and adafruit:samd.

I get the same errors when I try to compile for other adafruit:samd boards on the Raspberry Pi Zero W.

---

gcc --version
gcc (Raspbian 8.3.0-6+rpi1) 8.3.0

Section of verbose output:

/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4/bin/arm-none-eabi-gcc -mcpu=cortex-m0plus -mthumb -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -MMD "-D__SKETCH_NAME__="""MyFirstSketch.ino"""" -DF_CPU=48000000L -DARDUINO=10607 -DARDUINO_TRINKET_M0 -DARDUINO_ARCH_SAMD -DCRYSTALLESS -DADAFRUIT_TRINKET_M0 -D__SAMD21E18A__ -DARM_MATH_CM0PLUS -DUSB_VID=0x239A -DUSB_PID=0x801E -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER="Adafruit"" "-DUSB_PRODUCT="Trinket M0"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -Os -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/Core/Include/ -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/DSP/Include/ -I/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0/CMSIS/Device/ATMEL/ -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/variants/trinket_m0 /home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/WInterrupts.c -o /tmp/arduino-sketch-704E54BF84B4765302A16BBD33C1F4E6/core/WInterrupts.c.o
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/WInterrupts.c: In function 'detachInterrupt':
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/WInterrupts.c:378:1: internal compiler error: Illegal instruction
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See https://gcc.gnu.org/bugs/ for instructions.
/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4/bin/arm-none-eabi-gcc -mcpu=cortex-m0plus -mthumb -c -g -Os -w -std=gnu11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -MMD "-D__SKETCH_NAME__="""MyFirstSketch.ino"""" -DF_CPU=48000000L -DARDUINO=10607 -DARDUINO_TRINKET_M0 -DARDUINO_ARCH_SAMD -DCRYSTALLESS -DADAFRUIT_TRINKET_M0 -D__SAMD21E18A__ -DARM_MATH_CM0PLUS -DUSB_VID=0x239A -DUSB_PID=0x801E -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER="Adafruit"" "-DUSB_PRODUCT="Trinket M0"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -Os -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/Core/Include/ -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/DSP/Include/ -I/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0/CMSIS/Device/ATMEL/ -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/variants/trinket_m0 /home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/cortex_handlers.c -o /tmp/arduino-sketch-704E54BF84B4765302A16BBD33C1F4E6/core/cortex_handlers.c.o
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/cortex_handlers.c: In function 'Reset_Handler':
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/cortex_handlers.c:545:1: internal compiler error: Illegal instruction
}
^
Please submit a full bug report,
with preprocessed source if appropriate.
See https://gcc.gnu.org/bugs/ for instructions.
Error during build: exit status 1

I was thinking about manually updating gcc but I'm not sure if it's using Raspberry PI OS included gcc to compile or the one it downloads with Adafruit:samd.

[oaoutpost0]

I get a near identical error when trying to compile a bare minimum example for the Feather M0 on an RPi 1. Since arock093's error is on an RPi Zero, I suspect the issue is related to the armv6 instruction set. I use an RPi 1 for development since it shares the same CPU architecture as the Pi zero and has more ports. I can compile identical code for the same board from my Windows machine without any issues. The error must be a problem in the GCC toolchain.

In the meantime, I'm going to try an older release of the samd boards to see if the older toolchain does work on arm 6.

Arduino: 1.8.13 (Linux), Board: "Adafruit Feather M0, Small (-Os) (standard), Arduino, Off"

/home/pi/Documents/arduino-1.8.13/arduino-builder -dump-prefs -logger=machine -hardware /home/pi/Documents/arduino-1.8.13/hardware -hardware /home/pi/.arduino15/packages -tools /home/pi/Documents/arduino-1.8.13/tools-builder -tools /home/pi/Documents/arduino-1.8.13/hardware/tools/avr -tools /home/pi/.arduino15/packages -built-in-libraries /home/pi/Documents/arduino-1.8.13/libraries -libraries /home/pi/Arduino/libraries -fqbn=adafruit:samd:adafruit_feather_m0:opt=small,usbstack=arduino,debug=off -vid-pid=239A_800B -ide-version=10813 -build-path /tmp/arduino_build_123648 -warnings=default -build-cache /tmp/arduino_cache_555705 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.bossac.path=/home/pi/.arduino15/packages/arduino/tools/bossac/1.7.0-arduino3 -prefs=runtime.tools.bossac-1.8.0-48-gb176eee.path=/home/pi/.arduino15/packages/arduino/tools/bossac/1.8.0-48-gb176eee -prefs=runtime.tools.arm-none-eabi-gcc.path=/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4 -prefs=runtime.tools.arm-none-eabi-gcc-9-2019q4.path=/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4 -prefs=runtime.tools.arduinoOTA.path=/home/pi/.arduino15/packages/arduino/tools/arduinoOTA/1.2.1 -prefs=runtime.tools.arduinoOTA-1.2.1.path=/home/pi/.arduino15/packages/arduino/tools/arduinoOTA/1.2.1 -prefs=runtime.tools.CMSIS.path=/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0 -prefs=runtime.tools.CMSIS-5.4.0.path=/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0 -prefs=runtime.tools.CMSIS-Atmel.path=/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0 -prefs=runtime.tools.CMSIS-Atmel-1.2.0.path=/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0 -prefs=runtime.tools.openocd.path=/home/pi/.arduino15/packages/arduino/tools/openocd/0.10.0-arduino7 -prefs=runtime.tools.openocd-0.10.0-arduino7.path=/home/pi/.arduino15/packages/arduino/tools/openocd/0.10.0-arduino7 -prefs=runtime.tools.bossac-1.7.0-arduino3.path=/home/pi/.arduino15/packages/arduino/tools/bossac/1.7.0-arduino3 -verbose /home/pi/Documents/arduino-1.8.13/examples/01.Basics/BareMinimum/BareMinimum.ino
/home/pi/Documents/arduino-1.8.13/arduino-builder -compile -logger=machine -hardware /home/pi/Documents/arduino-1.8.13/hardware -hardware /home/pi/.arduino15/packages -tools /home/pi/Documents/arduino-1.8.13/tools-builder -tools /home/pi/Documents/arduino-1.8.13/hardware/tools/avr -tools /home/pi/.arduino15/packages -built-in-libraries /home/pi/Documents/arduino-1.8.13/libraries -libraries /home/pi/Arduino/libraries -fqbn=adafruit:samd:adafruit_feather_m0:opt=small,usbstack=arduino,debug=off -vid-pid=239A_800B -ide-version=10813 -build-path /tmp/arduino_build_123648 -warnings=default -build-cache /tmp/arduino_cache_555705 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.bossac.path=/home/pi/.arduino15/packages/arduino/tools/bossac/1.7.0-arduino3 -prefs=runtime.tools.bossac-1.8.0-48-gb176eee.path=/home/pi/.arduino15/packages/arduino/tools/bossac/1.8.0-48-gb176eee -prefs=runtime.tools.arm-none-eabi-gcc.path=/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4 -prefs=runtime.tools.arm-none-eabi-gcc-9-2019q4.path=/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4 -prefs=runtime.tools.arduinoOTA.path=/home/pi/.arduino15/packages/arduino/tools/arduinoOTA/1.2.1 -prefs=runtime.tools.arduinoOTA-1.2.1.path=/home/pi/.arduino15/packages/arduino/tools/arduinoOTA/1.2.1 -prefs=runtime.tools.CMSIS.path=/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0 -prefs=runtime.tools.CMSIS-5.4.0.path=/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0 -prefs=runtime.tools.CMSIS-Atmel.path=/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0 -prefs=runtime.tools.CMSIS-Atmel-1.2.0.path=/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0 -prefs=runtime.tools.openocd.path=/home/pi/.arduino15/packages/arduino/tools/openocd/0.10.0-arduino7 -prefs=runtime.tools.openocd-0.10.0-arduino7.path=/home/pi/.arduino15/packages/arduino/tools/openocd/0.10.0-arduino7 -prefs=runtime.tools.bossac-1.7.0-arduino3.path=/home/pi/.arduino15/packages/arduino/tools/bossac/1.7.0-arduino3 -verbose /home/pi/Documents/arduino-1.8.13/examples/01.Basics/BareMinimum/BareMinimum.ino
Using board 'adafruit_feather_m0' from platform in folder: /home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4
Using core 'arduino' from platform in folder: /home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4
Detecting libraries used...
/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4/bin/arm-none-eabi-g++ -mcpu=cortex-m0plus -mthumb -c -g -Os -w -std=gnu++11 -ffunction-sections -fdata-sections -fno-threadsafe-statics -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions "-D__SKETCH_NAME__=\"\"\"BareMinimum.ino\"\"\"" -w -x c++ -E -CC -DF_CPU=48000000L -DARDUINO=10813 -DARDUINO_SAMD_ZERO -DARDUINO_ARCH_SAMD -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -Os -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/Core/Include/ -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/DSP/Include/ -I/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0/CMSIS/Device/ATMEL/ -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/variants/feather_m0 /tmp/arduino_build_123648/sketch/BareMinimum.ino.cpp -o /dev/null -DARDUINO_LIB_DISCOVERY_PHASE
Generating function prototypes...
/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4/bin/arm-none-eabi-g++ -mcpu=cortex-m0plus -mthumb -c -g -Os -w -std=gnu++11 -ffunction-sections -fdata-sections -fno-threadsafe-statics -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions "-D__SKETCH_NAME__=\"\"\"BareMinimum.ino\"\"\"" -w -x c++ -E -CC -DF_CPU=48000000L -DARDUINO=10813 -DARDUINO_SAMD_ZERO -DARDUINO_ARCH_SAMD -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -Os -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/Core/Include/ -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/DSP/Include/ -I/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0/CMSIS/Device/ATMEL/ -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/variants/feather_m0 /tmp/arduino_build_123648/sketch/BareMinimum.ino.cpp -o /tmp/arduino_build_123648/preproc/ctags_target_for_gcc_minus_e.cpp -DARDUINO_LIB_DISCOVERY_PHASE
/home/pi/Documents/arduino-1.8.13/tools-builder/ctags/5.8-arduino11/ctags -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives /tmp/arduino_build_123648/preproc/ctags_target_for_gcc_minus_e.cpp
Compiling sketch...
/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4/bin/arm-none-eabi-g++ -mcpu=cortex-m0plus -mthumb -c -g -Os -std=gnu++11 -ffunction-sections -fdata-sections -fno-threadsafe-statics -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -MMD "-D__SKETCH_NAME__=\"\"\"BareMinimum.ino\"\"\"" -DF_CPU=48000000L -DARDUINO=10813 -DARDUINO_SAMD_ZERO -DARDUINO_ARCH_SAMD -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -Os -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/Core/Include/ -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/DSP/Include/ -I/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0/CMSIS/Device/ATMEL/ -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/variants/feather_m0 /tmp/arduino_build_123648/sketch/BareMinimum.ino.cpp -o /tmp/arduino_build_123648/sketch/BareMinimum.ino.cpp.o
Compiling libraries...
Compiling core...
/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4/bin/arm-none-eabi-g++ -mcpu=cortex-m0plus -mthumb -c -g -Os -std=gnu++11 -ffunction-sections -fdata-sections -fno-threadsafe-statics -nostdlib --param max-inline-insns-single=500 -fno-rtti -fno-exceptions -MMD "-D__SKETCH_NAME__=\"\"\"BareMinimum.ino\"\"\"" -DF_CPU=48000000L -DARDUINO=10813 -DARDUINO_SAMD_ZERO -DARDUINO_ARCH_SAMD -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -Os -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/Core/Include/ -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/DSP/Include/ -I/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0/CMSIS/Device/ATMEL/ -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/variants/feather_m0 /home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/variants/feather_m0/variant.cpp -o /tmp/arduino_build_123648/core/variant.cpp.o
/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4/bin/arm-none-eabi-gcc -c -g -x assembler-with-cpp -MMD -DF_CPU=48000000L -DARDUINO=10813 -DARDUINO_SAMD_ZERO -DARDUINO_ARCH_SAMD -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/Core/Include/ -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/DSP/Include/ -I/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0/CMSIS/Device/ATMEL/ -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/variants/feather_m0 /home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/pulse_asm.S -o /tmp/arduino_build_123648/core/pulse_asm.S.o
/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4/bin/arm-none-eabi-gcc -mcpu=cortex-m0plus -mthumb -c -g -Os -std=gnu11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -MMD "-D__SKETCH_NAME__=\"\"\"BareMinimum.ino\"\"\"" -DF_CPU=48000000L -DARDUINO=10813 -DARDUINO_SAMD_ZERO -DARDUINO_ARCH_SAMD -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -Os -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/Core/Include/ -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/DSP/Include/ -I/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0/CMSIS/Device/ATMEL/ -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/variants/feather_m0 /home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/WInterrupts.c -o /tmp/arduino_build_123648/core/WInterrupts.c.o
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/WInterrupts.c: In function 'detachInterrupt':
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/WInterrupts.c:378:1: internal compiler error: Illegal instruction
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
/home/pi/.arduino15/packages/adafruit/tools/arm-none-eabi-gcc/9-2019q4/bin/arm-none-eabi-gcc -mcpu=cortex-m0plus -mthumb -c -g -Os -std=gnu11 -ffunction-sections -fdata-sections -nostdlib --param max-inline-insns-single=500 -MMD "-D__SKETCH_NAME__=\"\"\"BareMinimum.ino\"\"\"" -DF_CPU=48000000L -DARDUINO=10813 -DARDUINO_SAMD_ZERO -DARDUINO_ARCH_SAMD -DARDUINO_SAMD_ZERO -DARM_MATH_CM0PLUS -DADAFRUIT_FEATHER_M0 -D__SAMD21G18A__ -DUSB_VID=0x239A -DUSB_PID=0x800B -DUSBCON -DUSB_CONFIG_POWER=100 "-DUSB_MANUFACTURER=\"Adafruit\"" "-DUSB_PRODUCT=\"Feather M0\"" -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/TinyUSB/Adafruit_TinyUSB_ArduinoCore/tinyusb/src -Os -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/Core/Include/ -I/home/pi/.arduino15/packages/adafruit/tools/CMSIS/5.4.0/CMSIS/DSP/Include/ -I/home/pi/.arduino15/packages/arduino/tools/CMSIS-Atmel/1.2.0/CMSIS/Device/ATMEL/ -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino -I/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/variants/feather_m0 /home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/cortex_handlers.c -o /tmp/arduino_build_123648/core/cortex_handlers.c.o
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/cortex_handlers.c: In function 'Reset_Handler':
/home/pi/.arduino15/packages/adafruit/hardware/samd/1.6.4/cores/arduino/cortex_handlers.c:545:1: internal compiler error: Illegal instruction
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
exit status 1
Error compiling for board Adafruit Feather M0.

[oaoutpost0]

And I can confirm that version 4.8.3-2014q1 of arm-none-eabi can compile the code just fine (release 1.4.1). Of course, while it compiles fine, it encounters a file not found error for {runtime.tools.bossac-1.7.0.path}/bossac. Hooray for progress!

[oaoutpost0]

Fixed both issues by reinstalling the SAMD boards. I used version 1.6.21 for the Arduino SAMD boards and 1.4.1 for the Adafruit SAMD boards.