[issue42150] Buffer overflow in bad_single_statement (Parser/pegen.c)

[Pablo Galindo Salgado]

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

The problem seems to be that when we do

const char *cur = strchr(p->tok->buf, '\n');
...

*(cur - 1) == '\\'

we don't check if "cur" is before at p->tok->buf (and therefore we cannot check the previous char)

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue42150>
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