Tested on MacBook Pro Late 2013 on MacOS Big Sur.

ToDos (Contributions welcome!):

• Testing with newer devices and newer macOs Versions
• Add a few seconds delay to actually see the script executing (exits too fast to see anything)
• Provide better documentation (how to compile)
• Cleaner Code

If you expierience Hangs of MacOS which are related to faulty memory or get the following errors, this script might help you to mark a certain area of your memory as defective so that MacOS never tries to access it during runtime:
PPMOO2, PPMOO3, PPMOO4 --> "There may be an issue with the onboard memory."

This script works similar to the gnu grub "badram" command.
You can use tools like Memtest86+ to find the exact location and size of the area you have to disable.
You can use tools like Refind to execute the compiled script before booting MacOS.