[Bug exp/20991] __int128 type support

["ssbssa at sourceware dot org" <sourceware-bugzilla@sourceware.org>]

https://sourceware.org/bugzilla/show_bug.cgi?id=20991

Hannes Domani <ssbssa at sourceware dot org> changed:

           What    |Removed                     |Added
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                 CC|                            |ssbssa at sourceware dot org

--- Comment #4 from Hannes Domani <ssbssa at sourceware dot org> ---
(In reply to Tom Tromey from comment #0)
> I tried a couple experiments with __int128 and found some gdb issues.
> 
> My test code:
> 
> __int128 x = 72;
> 
> I compiled with -g -c then ran gdb on the .o.
> 
> Printing kind of works, but chooses hex by default and zero-pads:
> 
> (gdb) p x
> $1 = 0x00000000000000000000000000000048
> 
> Specifying decimal still zero-pads, which looks very weird:
> 
> (gdb) p/d x
> $2 = 00000000000000000000000000000072
> 
> Addition doesn't work:
> 
> (gdb) p x + 5
> That operation is not available on integers of more than 8 bytes.

There is no longer zero-padding since 8.1, but addition still doesn't work.

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