K 10
svn:author
V 3
kib
K 8
svn:date
V 27
2011-03-13T10:08:02.065282Z
K 7
svn:log
V 301
MFC r219352:
The execution of the shebang script requires putting interpreter path,
possible option and script path in the place of argv[0] supplied to
execve(2).  It is possible and valid for the substitution to be shorter
then the argv[0].

Avoid signed underflow in this case.

PR:     kern/155321

END