https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67349
Bug ID: 67349
Summary: ICE on optimization
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: ysato at users dot sourceforge.jp
Target Milestone: ---
Created attachment 36252
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=36252&action=edit
problem source
I got following error.
$ LANG=C h8300-unknown-linux-gcc -c -O2 -fconserve-stack sync.c
In file included from include/linux/rcupdate.h:429:0,
from include/linux/rcusync.h:5,
from kernel/rcu/sync.c:1:
include/linux/rcutiny.h: In function 'rcu_barrier_sched':
include/linux/rcutiny.h:55:91: internal compiler error: Segmentation fault
0xb11f6f crash_signal
../../gcc/toplev.c:352
0xc1fe56 tree_check
../../gcc/tree.h:2857
0xc1fe56 fold_builtin_alloca_with_align
../../gcc/tree-ssa-ccp.c:2110
0xc1fe56 ccp_fold_stmt
../../gcc/tree-ssa-ccp.c:2215
0xca6cba substitute_and_fold_dom_walker::before_dom_children(basic_block_def*)
../../gcc/tree-ssa-propagate.c:1226
0xe6a7f7 dom_walker::walk(basic_block_def*)
../../gcc/domwalk.c:177
0xca64a9 substitute_and_fold(tree_node* (*)(tree_node*), bool
(*)(gimple_stmt_iterator*), bool)
../../gcc/tree-ssa-propagate.c:1319
0xc17efc ccp_finalize
../../gcc/tree-ssa-ccp.c:951
0xc17efc do_ssa_ccp
../../gcc/tree-ssa-ccp.c:2410
0xc17efc execute
../../gcc/tree-ssa-ccp.c:2442
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.
without -fconserve-stack in no problem.
