Comparison between signed and unsigned integer expressions

[funktioniert]

procxx/include/process.h

Line 284 in 441b5c5

const auto area = egptr() - dest < put_back_size_ ? egptr() - dest : put_back_size_;

contains an comparison between signed and unsigned integer expressions.

This could potentially lead to an integer underflow, resulting in memmoving a large area.
Maybe add a test for area < 0?

[ztdwu]

Yes, we could have that error if egptr() - dest < 0, although I don't think that will ever happen looking at the code. Still, it would be nice to explicitly cast all signed/unsigned comparisons just for the peace of mind.