[3.13] gh-124008: Fix calculation of the number of written bytes for the Windows console (GH-124059) #127325
+115
−28
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Since MultiByteToWideChar()/WideCharToMultiByte() is not reversible if
the data contains invalid UTF-8 sequences, use binary search to
calculate the number of written bytes from the number of written
characters.
Also fix writing incomplete UTF-8 sequences.
Also fix handling of memory allocation failures.
(cherry picked from commit 3cf83d9)
Co-authored-by: Serhiy Storchaka [email protected]