InternalFormat::blendSupport is uninitialized by its constructor. Found by clang static analyzer using the optin.cplusplus.UninitializedObject checker.
<rdar://problem/68166032>
Created attachment 407713 [details] Patch v1
Note that there are important steps to take when updating ANGLE. See http://trac.webkit.org/wiki/UpdatingANGLE
CC'ing ANGLE team members - likely want this to be upstreamed to ANGLE.
Comment on attachment 407713 [details] Patch v1 Looks good to me.
Regressed in WebKit tree with Bug 206318 with commit r255782, which itself was a mere from upstream ANGLE.
(In reply to Kenneth Russell from comment #4) > CC'ing ANGLE team members - likely want this to be upstreamed to ANGLE. Filed to track upstream: <https://bugs.chromium.org/p/angleproject/issues/detail?id=5008>
Comment on attachment 407713 [details] Patch v1 Marking cq+ since ios-wk2 is failing due to a progression, mac-debug-wk1 has 19 scheduled test runs queued, and all other tests passed.
Committed r266445: <https://trac.webkit.org/changeset/266445> All reviewed patches have been landed. Closing bug and clearing flags on attachment 407713 [details].