The source project of this merge request has been removed.
Make sure that the charcode is signless
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The data with type of char is signed by default.
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The byte value of UTF-8 is signless by default.
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So, if a UTF-8 charcode is stored in a char array, we should cast the type of its value from char to unsigned char.
Closes #5852 (closed) Fixes #5852 (closed)
Edited by Liu Linsong