Dear Maintainer,

If program does a fork+exec of a sgid executable, then:
(a) ltrace -f program and strace -f program expectedly
    don't let the child gain new provileges.
(b) strace program does, since it's not tracing the child
(c) ltrace program doesn't

This makes ltrace borderline useless for debugging stuff like
crontab(1).

Best,
наб