Compiler crashes when generating assembly for some targets

[bitglitcher]

The compiler fails to produce assembly output for some of the following targets.

• avr
• example
• m68k
• mcs6500
• riscv
• stm8

Test Function
int main() { return 0; }

Makefile

FLAGS = --freestanding -S
ARCH = x86_64
CC = ppci-cc
FILES = main.c

all: compile

compile:
        $(CC) $(FLAGS) --machine $(ARCH) $(FILES)

test: f.out
        cat f.out

clean: f.out
        rm f.out

I tried without compiler flags and still the compiler crashes.