Ridiculous Runtime Errors Write programs that produce crazy, obscure, ridiculous, or just plain nutty runtime errors.  Obfuscation and golfitude (shortness) not required.


solutions that look like they should work fine are better.
solutions that look like they should break one way but break another are better.
solutions that are nondeterministic are better as long as they are reproducible sometimes.
solutions with long distance between error cause and manifestation are better.
bonus points for producing errors that should be impossible.
bonus points for errors that crash the runtime (like making python segment fault) or operating system.


The unit of score shall be upvotes.

Addendum 1

Compiler misbehaviors are fine too.
The obligatory PHP one (which still hasn't been fixed as of 5.4):

&lt;?::


Outputs:

Parse error: syntax error, unexpected T_PAAMAYIM_NEKUDOTAYIM on line 1

Whaa?