Re: BUG #14897: Segfault on statitics SQL request

> On 11 November 2017 at 17:36, Tom Lane <tgl@sss.pgh.pa.us> wrote:
>
> Would you guys who are seeing the problem note whether the address of
> the int128 field is 16-aligned, or only 8-aligned?

__alignof__(__int128) returns 16 on my machine.

> Also, it'd be real useful to see some disassembly around the point of
> the crash, so that we can check whether the compiler is using SIMD
> instructions.  (Or just get the compiler to generate a numeric.s file
> with -S.)

Here is the disassembly section I've got in my case:

    0x00000000007fc474 numericvar_to_int128+458 je     0x7fc48c
<numericvar_to_int128+482>
    0x00000000007fc476 numericvar_to_int128+460 mov    -0x88(%rbp),%rax
    0x00000000007fc47d numericvar_to_int128+467 movdqa -0x60(%rbp),%xmm0
--> 0x00000000007fc482 numericvar_to_int128+472 movaps %xmm0,(%rax)
    0x00000000007fc485 numericvar_to_int128+475 mov    $0x1,%eax
    0x00000000007fc48a numericvar_to_int128+480 jmp    0x7fc455
<numericvar_to_int128+427>
    0x00000000007fc48c numericvar_to_int128+482 negq   -0x60(%rbp)