K 10
svn:author
V 6
emaste
K 8
svn:date
V 27
2016-03-04T18:28:19.906565Z
K 7
svn:log
V 450
elfcopy: fail if debug link target is empty

An empty debug link target previously returned a confusing and incorrect
error like "objcopy: fread failed: No error: 0". Now, return an explicit
error.

GNU objcopy allows an empty file as the debug link target. However,
that case is nonsensical so diverging from GNU behaviour is fine.

Reviewed by:	bdrewery
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D5541

END