[chbot] Pop quiz C

[Mike Field]

On 26/04/2017 4:31 PM, Mike Field wrote:
> It doesn't matter if the target is 8, 16, 32 or 64 bits - it will be 
> none-zero, and with "-Wall -pedantic" no errors are emitted for the 
> following code (at least with GCC).
>
... that is on a 32-bit or better Intel CPU, without the compiler 
optimizations turned on. If it goes through the hardware's barrel 
shifter, the shift count will be masked to the lower five or six bits 
depending on the data size,  as if you coded "a = b << ( c & 0x1f);".

Anyhow - that is my dead horse flogged for the day!