during build of python3 on openSUSE:Factory:zSystems, an internal compiler
error happens:
osc rbl openSUSE:Factory:zSystems python3 standard s390x

[  106s] gcc -pthread -c -Wno-unused-result -Wsign-compare -DNDEBUG
-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2
-fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables
-fstack-clash-protection -DOPENSSL_LOAD_CONF  -fmessage-length=0
-grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2 -fstack-protector-strong
-funwind-tables -fasynchronous-unwind-tables -fstack-clash-protection
-fmessage-length=0 -grecord-gcc-switches -O2 -Wall -D_FORTIFY_SOURCE=2
-fstack-protector-strong -funwind-tables -fasynchronous-unwind-tables
-fstack-clash-protection  -std=c99 -Wextra -Wno-unused-result
-Wno-unused-parameter -Wno-missing-field-initializers   -I. -I./Include   -fPIC
-DPy_BUILD_CORE -o Python/ceval.o Python/ceval.c
[  107s] illegal operation: 0001 ilc:1 [#1] SMP 
[  107s] Modules linked in: sd_mod nls_iso8859_1 nls_cp437 vfat fat virtio_rng
rng_core virtio_blk nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack xfs libcrc32c
btrfs xor zstd_compress zlib_deflate raid6_pq reiserfs squashfs zstd_decompress
xxhash fuse dm_snapshot dm_bufio dm_mod binfmt_misc loop sg scsi_mod
[  107s] CPU: 2 PID: 9726 Comm: cc1 Not tainted 4.16.13-1-default #1 openSUSE
Tumbleweed (unreleased)
[  107s] Hardware name: IBM 2827 H43 400 (KVM/Linux)
[  107s] Krnl PSW : 00000000d7b9eadd 00000000b5bd7e6d (0x44001002)
[  107s]            R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:3 CC:1 PM:0 RI:0
EA:3
[  107s] Krnl GPRS: 0000000000000000 00000000008a54ae 00000001f0b7bf48
0000000000000000
[  107s]            0000000000000000 0000000000000000 0000000000000000
0000000000000000
[  107s]            0705200180000000 0000000044001000 0000000000000044
00000001f0b7bf48
[  107s]            00000001f13bc100 0000000000000000 00000000008a41b0
00000001f0b7bea8
[  107s] Krnl Code:>0000000044001002: 0000              unknown
[  107s]            0000000044001004: 0000              unknown
[  107s]            0000000044001006: 0000              unknown
[  107s]            0000000044001008: 0000              unknown
[  107s]            000000004400100a: 0000              unknown
[  107s]            000000004400100c: 0000              unknown
[  107s]            000000004400100e: 0000              unknown
[  107s]            0000000044001010: 0000              unknown
[  107s] Call Trace:
[  107s] ([<00000000008a41b0>] pgm_check_handler+0x1a0/0x1f4)
[  107s] Last Breaking-Event-Address:
[  107s]  [<00000000008a54a6>] __s390x_indirect_jump_r1use_r9+0x6/0x10
[  107s]  
[  107s] ---[ end trace 66e3828a00e3b26a ]---
[  107s] gcc: internal compiler error: Segmentation fault signal terminated
program cc1


I tried to reproduce on an IBM community cloud server, but there it just
worked. The main differences to OBS are: 
z13 instead of zEC12
z/VM instead of KVM
and I did a manual build of course.