tree 5635222ab954e2656a0524a1a5a0ef0b412d554c
parent 51f568a85296869b6ac6da7287ee30659e30dd1f
author John Stiles <johnstiles@google.com> 1637161317 -0500
committer SkCQ <skcq-be@skia-corp.google.com.iam.gserviceaccount.com> 1637163861 +0000

Fix fuzzer-discovered error with child calls.

The `eval` methods take a shader/blender/colorFilter, and we assumed
when assembling the ChildCall expression that the child expression would
be a VariableReference because opaque objects don't participate in
normal expressions. However, comma-expressions were allowed to contain
opaque types. GLSL doesn't allow opaque types in comma-expressions:

http://screen/8YW59tYDUbBh9eW

Now we disallow them as well.

Change-Id: Iaf88ef7bddb5cc8f1f1e23b515174dfc291e00c7
Bug: oss-fuzz:41072
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/472446
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>