rv when execve succeeds...

[DJ D. <dj...@re...>]

An issue I've got has become philosophical enough that I'm asking for
more qualified opinions...

If you trace execve() and it succeeds (i.e. the image you're tracing
is replaced), should a return value be printed?

I.e.
   execve("test.x", ["", "xx"], NULL) = 0

Should the "= 0" be there, to indicate success, or should it be
omitted (like exit()) to indicate "doesn't return" ?

(ref: https://bugzilla.redhat.com/show_bug.cgi?id=1406395)

(note, https://bugzilla.redhat.com/show_bug.cgi?id=1220802 shows it
returning the *wrong* value, which is more obviously a bug, so if the
"= 0" is zero only by coincidence... bug ;)

(and yes, reproduced with a current git head)