Fix valgrind error by init memory region #6842
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
Summary: As title. After allocating a memory buffer, initialize its content to 0s. Test Plan: ``` $make valgrind_test $valgrind --tool=memcheck --log-file=valgrind.log --track-origins=yes ./db_test2 --gtest_filter=DBTest2.CompressionFailures ```
There was a problem hiding this comment.
@riversand963 has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.
pdillinger
approved these changes
May 14, 2020
db/db_test2.cc
Outdated
| BlockContents(std::move(fake_data), contents->data.size() + 1); | ||
| const size_t len = contents->data.size() + 1; | ||
| std::unique_ptr<char[]> fake_data(new char[len]); | ||
| memset(fake_data.get(), 0, len); |
There was a problem hiding this comment.
I believe memset can be avoided with () after new[] (https://stackoverflow.com/a/7546745/454544)
|
@riversand963 has updated the pull request. Re-import the pull request |
There was a problem hiding this comment.
@riversand963 has imported this pull request. If you are a Facebook employee, you can view this diff on Phabricator.
|
@riversand963 merged this pull request in b11a8b1. |
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Outdated suggestions cannot be applied.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.
Summary:
As title. After allocating a memory buffer, initialize its content to 0s.
This fixes valgrind issue introduced in #6709.
Test Plan: