Fix small bugs found by asan

[JaySon-Huang]

What problem does this PR solve?

Issue Number: close #4167

Problem Summary: as the issue describe

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

None

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• SchrodingerZhu
• jiaqizho

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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[JaySon-Huang]

/run-all-tests

[JaySon-Huang]

@SchrodingerZhu @jiaqizho PTAL

[sre-bot]

Coverage for changed files

Filename                                      Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
DeltaMerge/tests/gtest_convert_column.cpp        1246               163    86.92%           6                 0   100.00%         343                 0   100.00%         428               195    54.44%
Page/V2/tests/gtest_page_file.cpp                1239               309    75.06%           5                 0   100.00%         196                 0   100.00%         348               165    52.59%
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                            2485               472    81.01%          11                 0   100.00%         539                 0   100.00%         776               360    53.61%

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
16705      9451             43.42%    187279  95554        48.98%

full coverage report (for internal network access only)

[JaySon-Huang]

/merge

[ti-chi-bot]

@JaySon-Huang: It seems you want to merge this PR, I will help you trigger all the tests:

/run-all-tests

You only need to trigger /merge once, and if the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

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[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 995843a

[sre-bot]

Coverage for changed files

Filename                                      Regions    Missed Regions     Cover   Functions  Missed Functions  Executed       Lines      Missed Lines     Cover    Branches   Missed Branches     Cover
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
DeltaMerge/tests/gtest_convert_column.cpp        1246               163    86.92%           6                 0   100.00%         343                 0   100.00%         428               195    54.44%
Page/V2/tests/gtest_page_file.cpp                1239               309    75.06%           5                 0   100.00%         196                 0   100.00%         348               165    52.59%
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
TOTAL                                            2485               472    81.01%          11                 0   100.00%         539                 0   100.00%         776               360    53.61%

Coverage summary

Functions  MissedFunctions  Executed  Lines   MissedLines  Cover
16755      9447             43.62%    188616  95718        49.25%

full coverage report (for internal network access only)