Nope… you need to follow the instructions: gcc -std=gnu89 -m32 -fno-builtin because GCC defaults to ISO C23 these days, and that will not work, and neither

Nope… you need to follow the instructions: gcc -std=gnu89 -m32 -fno-builtin because GCC defaults to ISO C23 these days, and that will not work, and neither will anything where int and a pointer aren't the same size :)