/proc/self/exe returning '/' ?

[Thomas Klausner <wiz%NetBSD.org@localhost>]

Hi!

lang/perl5/patches/patch-caretx.c has a patch that claims that
NetBSD's /proc/self/exe sometimes returns '/'.

The patch seems to be there since 2008 (then named patch-ah):

revision 1.9
date: 2008-01-08 16:19:39 +0100;  author: apb;  state: Exp;  lines: +16 -4;
NetBSD's /proc/${pid}/exe is sometimes a symlink to "/" instead of to the
actual program name, so Perl's $^X or $EXECUTABLE_NAME variable was wrong.
Change a test to detect this case, and fall back to using argv[0].

Is this still an actual existing problem in NetBSD or should I just
remove the patch?
 Thomas