I did exactly the same thing in the early 2000s to get an ancient Java application working under Linux 2.4 -- it was calling some syscall via libc and getting a

I did exactly the same thing in the early 2000s to get an ancient Java application working under Linux 2.4 -- it was calling some syscall via libc and getting a slightly different result than it had under Linux 2.2, and dying for no useful reason. I'm pretty sure that LD_PRELOAD hack ran in prod for years :-) Very handy trick.