I used LD_PRELOAD to test system call failure code paths in a program (https://boston.conman.org/2022/12/21.1 https://boston.conman.org/2022/12/21.1) that would

I used LD_PRELOAD to test system call failure code paths in a program (https://boston.conman.org/2022/12/21.1 https://boston.conman.org/2022/12/21.1) that would otherwise be difficult to test.