Shubfach buffer overflow

[Jerome-PS]

Hi,

Thank you for your work.
In file src/schubfach_32.h, there is the following declaration:
constexpr int FtoaMinBufferLength = 32;
But when calling Ftoa with a negative number (for example -10), the function writes at least to buffer[32]. Because the negative causes buffer to advance
buffer += v.SignBit();
and then there are the two
std::memset(buffer + 0, '0', 16);
std::memset(buffer + 16, '0', 16);

This is for instance flagged by asan.

Keep up the good work!

Best regards,
JH.

[abolz]

Thanks! Oh dear... Thanks so much for the report!. I'm actually no longer working on this project, but will fix this asap.