It is easy enough to wrap libc's qsort() with LD_PRELOAD, sure. The problem is heterogeneity: qsort() is by far not the only sort implementation the machine is

It is easy enough to wrap libc's qsort() with LD_PRELOAD, sure. The problem is heterogeneity: qsort() is by far not the only sort implementation the machine is running. Even identifying them all might be a daunting task, not to mention figuring out how to wrap them.