This can be observed by the failure of http/tests/multipart/invalid-image-data.html and http/tests/multipart/invalid-image-data-standalone.html. http/tests/multipart/invalid-image-data-standalone.html actually times out, while the pixel results of http/tests/multipart/invalid-image-data.html are incorrect (the green box does not show).
Likely same issue as https://bugs.webkit.org/show_bug.cgi?id=30845
The tests covered by this bug were found to be passing consistently after moving from using the Skipped list to using test_expectations.txt. Their expectations were removed in r116122[1] (covered by bug #85591). Comment #1 indicates that the problem is only observable in pixel output. Not closing the bug, but will reconsider reinstating the expectation (a PASS) in test_expectations.txt just to note that there actually is a problem with this test. 1: http://trac.webkit.org/changeset/116122
This happens in EFL as well and covers more than images AFAICT: Most things in http/tests/multipart/ will fail because libsoup does not seem to handle multipart message bodies.
this should probably be marked a dup of bug 94515, which has the patch that will fix it
*** This bug has been marked as a duplicate of bug 94515 ***