Fix potential out of range in String::concat #10942
Closed
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
There is no prerequisite the given array has to be a 0-terminated char array. So we should only copy the length that has been given. The `setLen()` function will make sure the internal string is 0-terminated. So no need to dangerously assume there will be 1 more byte to copy
👋 Hello TD-er, we appreciate your contribution to this project! 📘 Please review the project's Contributions Guide for key guidelines on code, documentation, testing, and more. 🖊️ Please also make sure you have read and signed the Contributor License Agreement for this project. Click to see more instructions ...
Review and merge process you can expect ...
|
Test Results 62 files 62 suites 5m 39s ⏱️ Results for commit 998ce4c. ♻️ This comment has been updated with latest results. |
When constructing a String object, the internal buffer is a nullptr. However concatenating this to another String would return `false` while this is perfectly fine to do.
Memory usage test (comparing PR against master branch)The table below shows the summary of memory usage change (decrease - increase) in bytes and percentage for each target.
Click to expand the detailed deltas report [usage change in BYTES]
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
Included in single PR: #10945 |
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.
Description of Change
There is no prerequisite the given array has to be a 0-terminated char array. So we should only copy the length that has been given.
The
setLen()function will make sure the internal string is 0-terminated.Thus there is no need to dangerously assume there will be 1 more byte to copy.
Example of code which may fail: