-32768 on 16-bit targets

[grunwald]

Just to make sure since several of our customers brought this up lately:

Is the following code compliant on a target where 'int' is 16 bits?

Code:

int16_t x = -32768;

Since the standard C type of '-32768' is 'long' on 16-bit targets, the essential type is the same.
Thus, I believe the code is not compliant.

This seems unfortunate given that the value does fit in the target type; especially since the same code is compliant on targets with 32-bit int.