[Issue 8929] long.min is a Voldermort literal

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=8929


monarchdodra at gmail.com changed:

           What    |Removed                     |Added
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                 CC|                            |monarchdodra at gmail.com


--- Comment #1 from monarchdodra at gmail.com 2012-11-01 14:27:09 PDT ---
(In reply to comment #0)
> It cannot be named.
> 
> static assert (long.min == -9223372036854775807L);
> // Error: static assert  (-9223372036854775808L == -9223372036854775807L) is
> false
> 
> static assert (long.min == -9223372036854775808L); 
> // Error: signed integer overflow

I don't think this has anything to do with voldermort, and this works just
fine:

void main()
{
    long a = -2L^^63;
    assert(a == long.min);
    long b = long.min;
    assert(b == long.min);
}

It sounds more like an interpretation error, whereas *writing*
"-9223372036854775808L;" causes an error.

My *guess* is interprets the decimal number into a long, and afterwards, the
sign is applied. This chokes in this particular case, because the valid range
for longs is [-2^^63, 2^^63-1], so the interpreted number overflows before the
compiler has a chance to apply the sign:

long a =  9223372036854775808L; //WRONG
long b = -9223372036854775808L; //LEGAL

But that's just speculation on my part.

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