LD_PRELOAD does not work as expected

Question

Consider the following library which can be preloaded before any program execution:

// g++ -std=c++11 -shared -fPIC preload.cpp -o preload.so
// LD_PRELOAD=.         


        

Answer 1

If the program exits via _exit (POSIX) or _Exit (C99) or abnormal program termination (abort, fatal signals, etc.) then there's no way destructors could be called. I don't see any way around this.