The following layout test is failing on Mac WK1
unknown cause. test is newley flakey. closest revision that made changes to xsl was https://trac.webkit.org/changeset/235935/webkit
@@ -1,4 +1,4 @@
-CONSOLE MESSAGE: Unsafe attempt to load URL http://localhost:8000/security/resources/forbidden-stylesheet.xsl from origin http://127.0.0.1:8000. Domains, protocols and ports must match.
+CONSOLE MESSAGE: line 2: Unsafe attempt to load URL http://localhost:8000/security/resources/forbidden-stylesheet.xsl from origin http://127.0.0.1:8000. Domains, protocols and ports must match.
This test loads the XML document in an iframe so that it can call dumpAsText(). This test passes if the iframe below does not contain a message starting with "FAIL".
I have no reproduction steps.
This is still happening very frequently on macOS WK1 bots.
I was able to reproduce this failure with the following:
run-webkit-tests http/tests/security/cross-origin-xsl-redirect-BLOCKED.html -1 -fg --iter 100 --no-retry
Marked test as flaky in https://trac.webkit.org/r237337