I got a warning when compiling my code that calls
warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
Here is the definition of write():
ssize_t write(int fd, const void *buf, size_t count);
On success, the number of bytes written is returned (zero indicates
nothing was written). On error, -1 is returned, and errno is set
This just looks strange to me. Suppose ssize_t is int and I ended up writing something big (> 2GB). I can't just use a comparison of the returned value of write() vs count, can I?
(Edit: maybe I should write my question properly: What would be the right way to use write() without getting warning nor running into a situation that count == -1 after sign conversion? Yes, I know it is undefined behavior)