Fixes a bunch of warnings triggered by GCC 9.1

Fixes #600 (closed).

@pdraper do you have any views on this? It looks to me that the compiler should be able to infer the size of the string we write without us having to explicitly give it as an argument. Is that a false-positive?

Pretty sure this is a false positive. There are a number of bugs reported against -Werror=format-overflow for GCC 8 and 9 (also have a recollection we made some fixes to strncpy for similar reasons with GCC 8). I guess the other way around this would be to try snprintf, these changes are really all about catching all those pesky string overflow compromises in the kernel and similar...

added 1 commit

• d36b30b2 - Applied code formatting tool.

Compare with previous version

Thanks. I'll go with that then.

merged

mentioned in commit 27f4efc6