[Valgrind-users] valgrind with LD_PRELOAD

[Samuel Q. <Sam...@sy...>]

Greetings,

I invoke my program as follows:

     LD_PRELOAD=./libfakec.so ./my_app –e

The LD_PRELOAD environment variable tells the loader that libfakec.so should be loaded BEFORE every other library including the C runtime, libc.so (see http://stackoverflow.com/questions/426230/what-is-the-ld-preload-trick, for example).  I am substituting some of my own routines for standard library calls.  My app is working like I want, but the question is how to run the app under valgrind?  I tried this:

    valgrind LD_PRELOAD=./libfakec.so ./my_app –e

But valgrind gave and error saying that "LD_PRELOAD=./libfakec.so ./my_app –e" is not a valid path.  In theory, I could put the LD_PRELOAD before the valgrind invocation:

    LD_PRELOAD=./libfakec.so  valgrind  ./my_app –e

But then valgrind would also be using my special library routines and I am pretty sure that will not work.

Is there a way around this?  I am running on CentOS 6.5.

-Sam

PS: I tried to figure out how to search the archives of this mailing list for LD_PRELOAD, but I could not see a way.