commit 7b376940e4722f0da14807bd3b18823d0f7c1964
author Stephen White <senorblanco@chromium.org> Tue May 22 11:51:32 2018 -0400
committer Skia Commit-Bot <skia-commit-bot@chromium.org> Tue May 22 16:52:45 2018 +0000
tree 56c6b1c3fcacb6f9a07818626afbef7bb73fa18f
parent d26e446927051bc3eed3aed9e5e2db19e7122cf0

GrTessellator: fix crash on merging a dead edge.

When merging coincident vertices, sometimes merging an edge will cause
the next edge in the list to die. But since merge_vertices() retrieves
the next edge before merging the current one, we then try to merge its
lifeless corpse, bringing it back as a zombie. The fix is to leave
dead edges, dead.

This was revealed by ec79c39a770205910f0abd762de7e19a96c986ca, but was
likely a real bug that was being mishandled before that.

Bug: 844873
Bug: skia:7982
Change-Id: I752c45f7551df4278fa4cb4587e7ead48cd16a21
Reviewed-on: https://skia-review.googlesource.com/129524
Commit-Queue: Stephen White <senorblanco@chromium.org>
Reviewed-by: Robert Phillips <robertphillips@google.com>