[backport:1.4] JS cstring null fixes #16979
Merged
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Outdated suggestions cannot be applied.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.
Fixes #16674, fixes #16686
I special cased
cstring
for AppendStrStr here because it's not disruptive, butadd(var cstring, cstring)
could just be emitted/asm
'd and not use a magic, or it could as well just not exist since it wasn't documented before and it's very easy to wrap+=
yourself. This is good enough now though.Also fixed
move
turning stringsnull
.