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Re: Proposal: immediate strings
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From: |
Paul Eggert |
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Subject: |
Re: Proposal: immediate strings |
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Date: |
Wed, 06 Jun 2012 14:44:38 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1 |
On 06/06/2012 08:14 AM, Eli Zaretskii wrote:
>> > unsigned long x : BITS_PER_PTRDIFF_T - 1;
>> > unsigned y : 1;
>> > }
>> >
>> > works even if BITS_PER_PTRDIFF_T < BITS_PER_LONG.
> But only on LP64 hosts, right?
Yes, I suppose the bitfield type would be
unsigned long long on hosts where ptrdiff_t
is too wide for unsigned long; this is something
that be determined via something like
"#if ULONG_MAX < PTRDIFF_MAX".
Or perhaps it'd be simpler to say this:
size_t x : BITS_PER_PTRDIFF_T - 1;
unsigned y : 1;
if that's portable in practice.