Don't serialize redefined symbol nodes #7499
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Redefined nodes sometimes have busted internal references (like a self argument that has the class as its type even though it won't be able to look it up) which can cause crashes. Since they can't have references from outside themselves, we don't lose anything by not serializing them. Fixes a crash I observed at Dropbox. This partially reverts #7413, which introduced this crash (while fixing another), but leaves the test case it added.
JukkaL
approved these changes
Sep 12, 2019
JukkaL
pushed a commit
that referenced
this pull request
Sep 12, 2019
Redefined nodes sometimes have busted internal references (like a self argument that has the class as its type even though it won't be able to look it up) which can cause crashes. Since they can't have references from outside themselves, we don't lose anything by not serializing them. Fixes a crash I observed at Dropbox. This partially reverts #7413, which introduced this crash (while fixing another), but leaves the test case it added.
Closed
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Redefined nodes sometimes have busted internal references (like a self
argument that has the class as its type even though it won't be able
to look it up) which can cause crashes. Since they can't have
references from outside themselves, we don't lose anything by not
serializing them.
Fixes a crash I observed at Dropbox.
This partially reverts #7413, which introduced this crash (while
fixing another), but leaves the test case it added.
This (or another fix for this crash) needs to go into #7461 since it is a kind of bad regression.