https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70740
Bug ID: 70740
Summary: ICE when compiling the Linux kernel
(net/wireless/util.o)
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gcc-bugs at engestrom dot ch
Target Milestone: ---
Created attachment 38317
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=38317&action=edit
Kernel .config
$ gcc --version
gcc (GCC) 7.0.0 20160420 (experimental)
GCC built with default options (ie. by just running `./configure; make`) from
commit a8876617811b8999e71d100cdd682b4e76c04b67
$ uname -rm
3.16.0-67-generic x86_64
To reproduce:
1 - Checkout commit 9a0e3eea25d3ab267aff9d4eaed83fbe46d989d0 from the Linux
kernel.
2 - Try to compile net/wireless/util.o (just `make` it)
3 - Segfault:
CC net/wireless/util.o
net/wireless/util.c: In function ‘__ieee80211_data_to_8023’:
net/wireless/util.c:417:12: internal compiler error: Segmentation fault
static int __ieee80211_data_to_8023(struct sk_buff *skb, struct ethhdr *ehdr,
^~~~~~~~~~~~~~~~~~~~~~~~
0xb21a4f crash_signal
../.././gcc/toplev.c:335
0x793156 dominated_by_p(cdi_direction, basic_block_def const*, basic_block_def
const*)
../.././gcc/dominance.c:973
0xca52b4 propagate_with_phi
../.././gcc/tree-ssa-phiprop.c:335
0xca52b4 execute
../.././gcc/tree-ssa-phiprop.c:447
I know I'm pushing my luck by using an unreleased compiler on an unreleased
kernel version, but it's still probably a bug that should be fixed :]
PS: Attached is the kernel .config I use. Probably not relevant, but this
allows for 100% reproducibility.
