Mass rename of C++ .c files to .cc suffix?

[Jeff Law]

On 1/7/2022 3:25 AM, Martin Jambor wrote:
> Hi,
>
> Would anyone be terribly against mass renaming all *.c files (that are
> actually C++ files) within the gcc subdirectory to ones with .cc suffix?
>
> We already have 47 files with suffix .cc directly in the gcc
> subdirectory and 160 if we also count those in (non-testsuite)
> subdirectories, while the majority of our non-header C++ files still has
> the .c suffix.
>
> I have already missed stuff when grepping because I did not include *.cc
> files and the inconsistency is also just ugly and must be very confusing
> to anyone who encounters it for the first time.
>
> Since we have switched to git, this should have quite small effect on
> anyone who does their development on branches.  With Martin Liška we did
> a few experiments and git blame, git rebase and even git gcc-backport
> worked seamlessly across a rename.
>
> I would be fine waiting with it until GCC 12 gets released but see
> little value in doing so.
>
> What do others think?  (Any important caveats I might have missed?)
I think it's well past time we do this.   There may be a bit of pain 
with cherry-picking across the rename point, but we should just deal 
with it.

jeff