tree 7955cb12a78804b56c1ddfc86a0c42644ee1c02d
parent 2cf86e5ab6dcfe045a1f510c2b9a8b012a4158cd
author Steven Perron <stevenperron@google.com> 1546975664 -0500
committer Paul Wankadia <junyer@google.com> 1546987656 +0000

Make Frame use an index, not an iterator.

This avoids the possibility of iterator invalidation when stk grows.

Fixes #191.

Change-Id: Id51f468ff6b5f783b844b3eaaf55c1c3cc10220d
Reviewed-on: https://code-review.googlesource.com/c/37190
Reviewed-by: Paul Wankadia <junyer@google.com>