[racket] bitmap% with a file path that's deleted?

From: Danny Yoo (dyoo at cs.wpi.edu)
Date: Thu Aug 26 11:14:47 EDT 2010

Should I expect undefined behavior if I create a bitmap% with a given
file path, and then later delete that file?  I was assuming that a
bitmap% holds onto an internal representation of the image data; if
so, that'd mean I should be able to safely delete the image without
hurting the snip.

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