printf() print arguments in reversed order

[Andrew Makhorin]

> If http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0431r0.htm
> make it into C++17, then the sequence would be left-to-right.
> 

If this proposal will be accepted, will it make expressions like
(i += 1) - (i += 2) to have well-specified behavior? If so, can the new
standard invalidate some existing compilers? Is there a similar proposal
for C? Thanks.


Andrew Makhorin