question about shift operator

[Brian Matthews]

Randy D. Miller (randy at gtx.UUCP) writes:
|I've seen conflicting information about the shift operator in cases
|where operand2 is exactly equal to the number of bits in the object.
|E.g., with a 32 bit int, what must the following do?
|     int n;
|     n <<= 32;
|K&R 1st ed. seems to indicate the operation is undefined, but does
|the proposed standard change this?  

>From section 3.3.7 "Bitwise shift operators" of the ANSI draft standard,
in the first paragraph under Semantics:

"...If the value of the right operand is negative or greater than or
equal to the width in bits of the promoted left operand, the behavior is
undefined."

-- 
Brian L. Matthews  blm at cxsea.UUCP   ...{mnetor,uw-beaver!ssc-vax}!cxsea!blm
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