[Bug 1890435] Re: gcc-10 breaks on armhf (flaky): internal compiler error: Segmentation fault

[Christian Ehrhardt ]

r10-6823 bad 1 of 28

during RTL pass: reload
/root/qemu-5.0/migration/ram.c: In function ‘ram_load_postcopy’:
/root/qemu-5.0/migration/ram.c:3298:1: internal compiler error: Segmentation fault
 3298 | }
      | ^
0x524cf3 crash_signal
        ../../gcc/gcc/toplev.c:328
0x411e07 add_regs_to_insn_regno_info
        ../../gcc/gcc/lra.c:1509
0x411efb add_regs_to_insn_regno_info
        ../../gcc/gcc/lra.c:1531
0x411efb add_regs_to_insn_regno_info
        ../../gcc/gcc/lra.c:1531
0x411efb add_regs_to_insn_regno_info
        ../../gcc/gcc/lra.c:1531
0x412f21 lra_update_insn_regno_info(rtx_insn*)
        ../../gcc/gcc/lra.c:1624
0x413071 lra_update_insn_regno_info(rtx_insn*)
        ../../gcc/gcc/lra.c:1617
0x413071 lra_push_insn_1
        ../../gcc/gcc/lra.c:1774
0x42b373 spill_pseudos
        ../../gcc/gcc/lra-spills.c:523
0x42b373 lra_spill()
        ../../gcc/gcc/lra-spills.c:636
0x414163 lra(_IO_FILE*)
        ../../gcc/gcc/lra.c:2554
0x3e5b9d do_reload
        ../../gcc/gcc/ira.c:5523
0x3e5b9d execute
        ../../gcc/gcc/ira.c:5709
Please submit a full bug report,
with preprocessed source if appropriate


I'll give the hopefully good r10-6822 another few chances to fail, because - as it is obvious by now - it seems we can't rely much on these bisect results.

Afterwards I'll give 10.2.1-1 in Hirsute a try (requested by Doko)

-- 
You received this bug notification because you are a member of Ubuntu
Foundations Bugs, which is subscribed to gcc-10 in Ubuntu.
https://bugs.launchpad.net/bugs/1890435

Title:
  gcc-10 breaks on armhf (flaky): internal compiler error: Segmentation
  fault

Status in Groovy:
  Confirmed
Status in gcc-10 package in Ubuntu:
  Confirmed

Bug description:
  Hi,
  this could be the same as bug 1887557 but as I don't have enough data I'm filing it as individual issue for now.

  I have only seen this happening on armhf so far.
  In 2 of 5 groovy builds of qemu 5.0 this week I have hit the issue, but it is flaky.

  Flakyness:
  1. different file
  first occurrence
  /<<PKGBUILDDIR>>/target/s390x/excp_helper.c:544:1: internal compiler error: Segmentation fault
  second occurrence
  /<<PKGBUILDDIR>>/linux-user/syscall.c:12479:1: internal compiler error: Segmentation fault

  Being so unreliable I can't provide mcuh more yet.
  I filed it mostly for awareness and so that I can be dup'ed onto the right but if there is a better one.

To manage notifications about this bug go to:
https://bugs.launchpad.net/groovy/+bug/1890435/+subscriptions