[Bug testsuite/29416] New: [gdb, testsuite/aarch64] FAIL: gdb.ada/literals.exp: print 16#ffffffffffffffff#

[Bug testsuite/29416] New: [gdb, testsuite/aarch64] FAIL: gdb.ada/literals.exp: print 16#ffffffffffffffff#

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29416

            Bug ID: 29416
           Summary: [gdb, testsuite/aarch64] FAIL: gdb.ada/literals.exp:
                    print 16#ffffffffffffffff#
           Product: gdb
           Version: HEAD
            Status: NEW
          Severity: normal
          Priority: P2
         Component: testsuite
          Assignee: unassigned at sourceware dot org
          Reporter: vries at gcc dot gnu.org
  Target Milestone: ---

On aarch64, I run into:
...
(gdb) print 16#ffffffffffffffff#^M
$7 = 18446744073709551615^M
(gdb) FAIL: gdb.ada/literals.exp: print 16#ffffffffffffffff#
...

On x86_64 instead, I get:
...
(gdb) print 16#ffffffffffffffff#^M
$7 = -1^M
(gdb) PASS: gdb.ada/literals.exp: print 16#ffffffffffffffff#
...

I can reproduce this on x86_64-linux using:
...
$ gdb -q -batch -ex "set lang ada" -ex "set arch i386" -ex "print
16#ffffffffffffffff#"
The target architecture is set to "i386".
$1 = -1
$ gdb -q -batch -ex "set lang ada" -ex "set arch aarch64" -ex "print
16#ffffffffffffffff#"
The target architecture is set to "aarch64".
$1 = 18446744073709551615
...

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[Bug testsuite/29416] [gdb, testsuite/aarch64] FAIL: gdb.ada/literals.exp: print 16#ffffffffffffffff#

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29416

--- Comment #1 from Tom de Vries <vries at gcc dot gnu.org> ---
With i386, we have:
...
(gdb) p int_bits
$3 = 32
(gdb) p long_bits
$4 = 32
(gdb) p long_long_bits
$5 = 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.  */                                 
      yylval.typed_val.type = type_long_long (par_state);                      
      ...

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

This explains the difference between the two results.

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[Bug testsuite/29416] [gdb, testsuite/aarch64] FAIL: gdb.ada/literals.exp: print 16#ffffffffffffffff#

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29416

--- Comment #2 from Tom de Vries <vries at gcc dot gnu.org> ---
https://sourceware.org/pipermail/gdb-patches/2022-July/191107.html

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[Bug testsuite/29416] [gdb, testsuite/aarch64] FAIL: gdb.ada/literals.exp: print 16#ffffffffffffffff#

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29416

--- Comment #3 from Tom de Vries <vries at gcc dot gnu.org> ---
Status: waiting for Joel / adacore to come back to say how they want it fixed (
https://sourceware.org/pipermail/gdb-patches/2022-July/191129.html ).

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[Bug ada/29416] [gdb, testsuite/aarch64] FAIL: gdb.ada/literals.exp: print 16#ffffffffffffffff#

[vries at gcc dot gnu.org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29416

Tom de Vries <vries at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED
   Target Milestone|---                         |13.1
          Component|testsuite                   |ada

--- Comment #4 from Tom de Vries <vries at gcc dot gnu.org> ---
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=61b9faef51ddd40f9e6de0e41b66c41cd943d868

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