Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.
RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1667088

Summary: gcc.target/aarch64/sve/struct_move_1.c ICE with -fstack-protector-strong
Product: Red Hat Enterprise Linux 8 Reporter: Michael Petlan <mpetlan>
Component: gccAssignee: Marek Polacek <mpolacek>
gcc sub component: system-version QA Contact: Alexandra Petlanová Hájková <ahajkova>
Status: CLOSED WONTFIX Docs Contact:
Severity: unspecified    
Priority: unspecified CC: ahajkova, codonell, fweimer, jakub, law, mpetlan, ohudlick, sipoyare, tgummels, vmukhame, woodard
Version: 8.0Keywords: Triaged
Target Milestone: rcFlags: pm-rhel: mirror+
Target Release: 8.0   
Hardware: aarch64   
OS: Unspecified   
Whiteboard:
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2021-01-05 17:26:22 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 1682592    
Bug Blocks: 1683831, 1684559, 1746605    

Description Michael Petlan 2019-01-17 12:21:30 UTC 
Description of problem:

"Downstream" version of an upstream bug https://gcc.gnu.org/PR88847 ...
Testcase struct_move_1.c from aarch64 SVE tests causes an ICE when built with -fstack-protector-strong

============ From upstream PR ================
Target: aarch64-unknown-linux-gnu

$ ./cc1 -quiet struct_move_1.c -march=armv8.2-a+sve -msve-vector-bits=256 -mbig-endian -fstack-protector-strong
struct_move_1.c: In function ‘f2_vnx32qi’:
struct_move_1.c:60:1: error: unrecognizable insn:
   60 | TEST_TYPE (vnx32qi, z0, z2)
      | ^~~~~~~~~
(insn 12 11 13 2 (set (mem/c:VNx32QI (plus:DI (reg/f:DI 85 virtual-stack-vars)
                (const_int -80 [0xffffffffffffffb0])) [3 x+0 S64 A128])
        (unspec:VNx32QI [
                (reg:VNx16BI 93)
                (reg:VNx32QI 94)
            ] UNSPEC_MERGE_PTRUE)) "struct_move_1.c":60:1 -1
     (nil))
during RTL pass: vregs
struct_move_1.c:60:1: internal compiler error: in extract_insn, at recog.c:2305
0x59c1ab _fatal_insn(char const*, rtx_def const*, char const*, int, char const*)
	/home/polacek/src/gcc/gcc/rtl-error.c:108
0x59c1e3 _fatal_insn_not_found(rtx_def const*, char const*, int, char const*)
	/home/polacek/src/gcc/gcc/rtl-error.c:116
0xb8dfaf extract_insn(rtx_insn*)
	/home/polacek/src/gcc/gcc/recog.c:2305
0x90ea87 instantiate_virtual_regs_in_insn
	/home/polacek/src/gcc/gcc/function.c:1605
0x90ea87 instantiate_virtual_regs
	/home/polacek/src/gcc/gcc/function.c:1975
0x90ea87 execute
	/home/polacek/src/gcc/gcc/function.c:2024
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <https://gcc.gnu.org/bugs/> for instructions.

Without -fstack-protector-strong it compiles fine.
==============================================

Version-Release number of selected component (if applicable):
gcc-8.2.1-3.5.el8.aarch64

How reproducible:
100%

Steps to Reproduce:
as above

Actual results:
ICE

Expected results:
no ICE

Additional info:
Comment 1 Marek Polacek 2019-01-17 13:31:29 UTC 
Moving to 8.1.
Comment 2 Marek Polacek 2019-02-13 15:07:20 UTC 
Fixed now on trunk by gcc.gnu.org/r268845.  Unsure if we'll want to backport to 8.