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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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Subject: [Bug testsuite/29416] [gdb, testsuite/aarch64] FAIL:
 gdb.ada/literals.exp: print 16#ffffffffffffffff#
Date: Wed, 27 Jul 2022 10:09:52 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D29416

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
With i386, we have:
...
(gdb) p int_bits
$3 =3D 32
(gdb) p long_bits
$4 =3D 32
(gdb) p long_long_bits
$5 =3D 64
...
so in processInt we hit the fits-in-unsigned-long-long case where we use as
type long long, so we have:
...
      /* Note: Interprets ULLONG_MAX as -1.  */=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
      yylval.typed_val.type =3D type_long_long (par_state);=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20
      ...

With aarch64, we have:
...
(gdb) p int_bits
$1 =3D 32
(gdb) p long_bits
$2 =3D 64
(gdb) p long_long_bits
$3 =3D 64
...
so in processInt we hit the fits-in-unsigned-long case and we use type unsi=
gned
long:
...
      yylval.typed_val.type=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20
        =3D builtin_type (par_state->gdbarch ())->builtin_unsigned_long;=20=
=20=20=20=20=20=20=20=20
      ...

This explains the difference between the two results.

--=20
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