This doesn't seem to happen on Win32 5.8.4 (AS 810). Which version are you using?

Well, I'm running version "5.8.6 built for PA-RISC2.0-thread-multi-LP64", running on HP/UX. I also get the same behaviour for 5.6.1.

But your snippet doesn't actually demonstrate the problem: you get the warning message, but can't actually detect whether the code crashed. Here's what I get when I add a trace statement after the call to substr(). 

$ perl -wle 'sub foo{}; my $s=""; foo( substr($s,2,1) );print "Not rea
+ched\n"'
substr outside of string at -e line 1.
$

[download]
Note that "not reached" is never reached, and is not printed, because the code crashes on the substr() call.
--
Ytrew

In reply to Re^2: substr oddity by Anonymous Monk
in thread Perl oddities by brian_d_foy

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