I'm trying to figure out the best way to write a wrapper around memcpy()
which can call fprintf() without winding up getting into a recursive
loop. The problem is that fprintf() will call memcpy() and around and
around we go.
I can use a global variable to prevent this, but that usage isn't thread
safe. I can make it thread safe by using pthread keys, but then i have to
link in libc_r, and for non-pthreaded programs i don't want to do that.
Anyone have any suggestions? Right now I'm almost thinking that I just
need to directly patch libc and libc_r. It might be an ugly patch though,
and I'd rather not have this patch mandate recompiling all of libc.
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