Make perl crash

perl -e '$x = []; push @$x, eval { $x = 1; return $x = 1; }'
It is not easy to make perl give a segfault, but this does it. This is a known issue but apparently not easy to fix. This is completely useless except for showing people that perl is not bullet-proof.
Sample Output
Segmentation fault

By: dstahlke
2009-10-07 22:42:18

What Others Think

It's because of perl's liberal nature. It tries to let you get away with things you shouldn't. Read it's documentation; it states as a known bug that it doesn't enforce the warnings pragma. Try it now, using pythonic-type scoping and you find that when you force it to only allow proper coding practices, no such failures occur: perl -eMstrict '$x = []; push @$x, eval { $x = 1; return $x = 1; }' Your statement is misleading. With more intellectual honesty you would have stated that 1) nothing is bullet proof, and 2) poor coding practices are especially vulnerable
linuxrawkstar · 594 weeks and 3 days ago
What does "-eMstrict" do? With "-Mstrict -e" or "-e 'use strict; ...'" it still segfaults but with "-eMstrict" it doesn't. Google doesn't turn up anything on this option.
dstahlke · 594 weeks and 2 days ago

What do you think?

Any thoughts on this command? Does it work on your machine? Can you do the same thing with only 14 characters?

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