https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106101
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |segher at gcc dot gnu.org
Status|UNCONFIRMED |NEW
Last reconfirmed| |2022-06-27
Keywords| |needs-bisection
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Program received signal SIGSEGV, Segmentation fault.
0x00000000021932ef in reg_bitfield_target_p (x=0x7ffff6a4ee10,
body=0x7ffff6a4e450) at /space/rguenther/src/gcc/gcc/combine.cc:14142
14142 if (GET_CODE (target) == SUBREG)
(gdb) p target
$1 = (rtx) 0xafafaf0100000047
one frame up:
(gdb) p debug_rtx (place)
(insn 24 52 25 4 (set (strict_low_part (reg/v:SI 71 [ yyval ]))
(mem/f:SI (plus:DI (reg:DI 85)
(const_int 4 [0x4])) [2 *_3+4 S4 A32])) "/tmp/y.tab.i":41:23
1485 {movstrictsi}
(nil))
static int
reg_bitfield_target_p (rtx x, rtx body)
{
...
else if (GET_CODE (dest) == STRICT_LOW_PART)
target = SUBREG_REG (XEXP (dest, 0));
but the strict_low_part doesn't contain a SUBREG ...!? Adding a check to
that avail would of course fix this.
It's all ancient code though...
