Sending to Brendan because this is so similar to bug 38215. Is it in fact a duplicate?
This is the same class of bugs as 38215, and could be combined. Apparently, the src property of image objects (and only that property) is handled only by the underlying C++ object's GetProperty routine, which uses an inefficient string compare to specialize its behavior for "src". This is the same raw deal as in bug 38215, just for image.src rather than for location.href. There are probably other specific bugs of this class. I would say let's combine bugs under the general class "DOM must use resolve, not getProperty, to be lazy" (or similar words). /be
*** This bug has been marked as a duplicate of 38215 ***
Verifying duplicate -