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RE: GCC 3.1.1
- From: "Rob Taylor" <robt at flyingpig dot com>
- To: "Andreas Schwab" <schwab at suse dot de>, "Jack Lloyd" <lloyd at acm dot jhu dot edu>
- Cc: "Toon Moene" <toon at moene dot indiv dot nluug dot nl>, <gcc at gcc dot gnu dot org>, <shimon at simon-shapiro dot com>
- Date: Fri, 28 Jun 2002 11:19:22 +0100
- Subject: RE: GCC 3.1.1
Andreas Schwab <schwab@suse.de> writes:
> Jack Lloyd <lloyd@acm.jhu.edu> writes:
>
> |> Basically:
> |>
> |> unsigned long long x;
> |> x = 1 << 32;
> |>
> |> results in x == 0 rather than 0x100000000 as the code expects.
>
> Actually this is already undefined by itself, and even x == 0 is not
> guaranteed.
why? x is an unsigned long long, surely << should be defined for values up to 63
for this implementation?
Rob Taylor