Re: [PATCH v2] config: avoid "write_in_full(fd, buf, len) < len" pattern

On Thu, Sep 14, 2017 at 12:31:38AM +0100, Ramsay Jones wrote:

quoted

Hmm, about three or four years ago, I spent two or three evenings
getting git to compile -Wextra clean. I remember the signed/unsigned
issue was the cause of a large portion of the warnings issued by
the compiler. I was surprised that it took such a relatively short
time to do. However, it affected quite a large portion of the code, so
I didn't think Junio would even consider applying it. Also, I only used
gcc and was anticipating having additional warnings on clang (but I
didn't get around to trying).

Maybe I should give it another go. :-D

For example, I remember the patch given below reduced the number
of warnings quite a bit (because it's an inline function in a
header file).

I just tried it again tonight; the current master branch has 3532
warnings when compiled with -Wextra, 1409 of which are -Wsign-compare
warnings. After applying the patch below, those numbers are reduced
by 344 to 3188/1065.

I'd love it if we were clean on -Wextra. My big question is many
contortions we'd have to go through in the code. I don't mind at all if
we're actually cleaning as we go (e.g., using types of the correct
signedness, or preventing possible funny interactions). I'm just worried
it will turn into a bunch of noisy casts.

The patch you showed seems like an improvement to the code, but I don't
know if that would be the case for all of them. :)

-Peff