https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120927
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Priority|P3 |P2
Status|UNCONFIRMED |ASSIGNED
Ever confirmed|0 |1
Last reconfirmed| |2025-07-02
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot
gnu.org
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Program received signal SIGSEGV, Segmentation fault.
dealii::QGauss5<1>::QGauss5 (this=0x7fffffffdac0)
at source/base/quadrature_lib.cc:469
469 this->quadrature_points[i] = Point<1>(xpts[i]);
(gdb) disassemble
0x00000000004f8bb2 <+162>: movzbl %al,%eax
0x00000000004f8bb5 <+165>: vpbroadcastw %eax,%xmm0
0x00000000004f8bbb <+171>: vpcmpnleuw 0x81367a(%rip),%xmm0,%k1 #
0xd0c240
=> 0x00000000004f8bc6 <+182>: vmovapd 0xd26400(%rcx),%zmm0{%k1}{z}
--Type <RET> for more, q to quit, c to continue without paging--
0x00000000004f8bd0 <+192>: vmovupd %zmm0,(%rsi,%rcx,1){%k1}
0x00000000004f8bd7 <+199>: vmovapd 0xd263c0(%rcx),%zmm0{%k1}{z}
0x00000000004f8be1 <+209>: vmovupd %zmm0,(%rdx,%rcx,1){%k1}
(gdb) p $rcx
$1 = 32
that 0xd263c0 is
456 static const double xpts[] = { (xpts_normal[0]+1)/2.,
457 (xpts_normal[1]+1)/2.,
458 (xpts_normal[2]+1)/2.,
459 (xpts_normal[3]+1)/2.,
460 (xpts_normal[4]+1)/2. };
a %zmm aligned load requires 64byte alignment.
