Help with bit-field semantics in C and C++
Mike Stump
mrs@apple.com
Tue Aug 24 23:22:00 GMT 2004
On Tuesday, August 24, 2004, at 02:42 PM, David Carlton wrote:
> Just to clarify: I agree that, it's okay if, on one run of the
> program, the program behaves as if it's 0 and on another run of the
> program, the program behaves as if it's 1, or other similar
> pathologies. But I don't see how the standard allows the program to
> behave as if the value is neither 0 nor 1.
(E)n, where n is an int with value, say of 7, is permitted by the
standard to take on the value 7. This is because the text of the
standard says the value is unspecified. 7 is a unspecified value,
honest.
the assignment to x of (E)n, is permitted to bit-wise copy the value
into x.
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