butil: fix undefined behaviors#3135
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BusyJay
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There are two kinds of problems: 1. signed number overflow is undefined behavior; 2. vsnprintfT may return E2BIG instead of EOVERFLOW.
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There are two kinds of problems: 1. signed number overflow is undefined behavior; 2. vsnprintfT may return E2BIG instead of EOVERFLOW.
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What problem does this PR solve?
Issue Number: resolve #3134
Problem Summary:
There are two kinds of problems:
What is changed and the side effects?
Changed:
Side effects:
Performance effects:
Breaking backward compatibility:
Check List: