Content from 2019-10

Beware foreign memory in lisp images

posted on 2019-10-21 17:50:00

If you're developing a game in Common Lisp, two things are probably true:

  • you're using CFFI to call into a C library, like SDL2.
  • you're building a lisp image to ship your game.

Taken together, you're open to a very subtle bug.

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