Re: BUG #14897: Segfault on statitics SQL request

> On 11 November 2017 at 17:36, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)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)