Comment 5 for bug 2063340

Hi,

So the definition is a bit complex as there are many indirections. I can give the `gdb` view of the world, which should be the ground truth:

For reference: on x86_64, so

❯ uname -a
Linux frost 6.9.9-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.9.9-1 (2024-07-13) x86_64 GNU/Linux

we have:

(gdb) ptype /r test_timeval
type = struct timeval {
    __time_t tv_sec;
    __suseconds_t tv_usec;
}
(gdb) ptype /o test_timeval
/* offset | size */ type = struct timeval {
/* 0 | 8 */ __time_t tv_sec;
/* 8 | 8 */ __suseconds_t tv_usec;

                               /* total size (bytes): 16 */
                             }
(gdb) ptype /r test_timespec
type = struct timespec {
    __time_t tv_sec;
    __syscall_slong_t tv_nsec;
}
(gdb) ptype /o test_timespec
/* offset | size */ type = struct timespec {
/* 0 | 8 */ __time_t tv_sec;
/* 8 | 8 */ __syscall_slong_t tv_nsec;

                               /* total size (bytes): 16 */
                             }
(gdb) ptype /r __time_t
type = long
(gdb) ptype /r __suseconds_t
type = long
(gdb) ptype /r __syscall_slong_t
type = long

❯ getconf LONG_BIT
64

On armv8l, the target architecture there, we have:

(sid_armhf-dchroot)pvaneynd@amdahl:~$ uname -a
Linux amdahl 6.1.0-23-arm64 #1 SMP Debian 6.1.99-1 (2024-07-15) armv8l GNU/Linux

We have:

(gdb) ptype /r test_timeval
type = struct timeval {
    __time64_t tv_sec;
    __suseconds64_t tv_usec;
}
(gdb) ptype /o test_timeval
/* offset | size */ type = struct timeval {
/* 0 | 8 */ __time64_t tv_sec;
/* 8 | 8 */ __suseconds64_t tv_usec;

                               /* total size (bytes): 16 */
                             }
(gdb) ptype /r test_timespec
type = struct timespec {
    __time64_t tv_sec;
    long tv_nsec;
}
(gdb) ptype /o test_timespec
/* offset | size */ type = struct timespec {
/* 0 | 8 */ __time64_t tv_sec;
/* 8 | 4 */ long tv_nsec;
/* XXX 4-byte padding */

                               /* total size (bytes): 16 */
                             }

(gdb) ptype /r __time64_t
type = long long
(gdb) ptype /r __suseconds64_t
type = long long

(sid_armhf-dchroot)pvaneynd@amdahl:~$ getconf LONG_BIT
32

Best regards, Peter