[Issue 1512] GC infinite loop when invalid user code runs.

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=1512





------- Comment #1 from braddr at puremagic.com  2007-09-17 23:19 -------
double delete == undefined behavior.  Anything that happens after that point is
fair game.


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