Since the string from strerror should never be modified, use const.

[spth]

This is just a very minor issue.

megaglest contains some calls to strerror where the result is assigned to a char *. However, according to the strerror specification, the string returned by strerror should never be changed, so I think it would be better to use const char * instead.

Philipp

[Jammyjamjamman]

I think this looks ok to merge.

[AndyMender]

I think it's a good idea to use const and constexpr wherever possible, both as a nod to other developers and a safety net for vars which shouldn't change :).