4 ms·

Not only is LD_PRELOAD interpreted by code within the process itself (so it can easily be ignored), but also the parent process which forks the sandbox process

• pjmlp 10y ago
  On my UNIX days I used it as poor man's solution to track memory leaks, by overriding malloc()/free(), this was done at dynamic linker level, not the process. So I checked and apparently this no longer works since AT_SECURE exists, around 2.6.0 time frame. It has been a while since I cared to do this on GNU/Linux, maybe around 2002. So thanks for forcing me to update myself.
  • majewsky 10y ago
    > On my UNIX days I used it as poor man's solution to track memory leaks, by overriding malloc()/free(), That's not a poor man's solution. That's how Valgrind's leak checker works (AFAIK).
    • electrum 10y ago
      Valgrind's leak checker is far more complicated than a simple malloc replacement. It's a virtual machine that runs the program being debugged.
    • pjmlp 10y ago
      It is poor man's solution, because on the cases there was money to spare, we could use Purify.