[issue40958] ASAN/UBSAN: heap-buffer-overflow in pegen.c

[Pablo Galindo Salgado]

Pablo Galindo Salgado <pablogsal at gmail.com> added the comment:

>  returns an object that is one character shorter than the col_offset and that's how we get to the situation you mentioned.

What happens with:

>>> "Ṕýţĥòñ" +

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<https://bugs.python.org/issue40958>
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