https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66134
Bug ID: 66134
Summary: [CHKP] ICE: Unable to coalesce ssa_names 18 and 17
which are marked as MUST COALESCE
Product: gcc
Version: 6.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: middle-end
Assignee: unassigned at gcc dot gnu.org
Reporter: ienkovich at gcc dot gnu.org
Target Milestone: ---
Created attachment 35536
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=35536&action=edit
reproducer
>gcc -O2 -fcheck-pointer-bounds -mmpx -fno-tree-ccp test.c -c
Unable to coalesce ssa_names 18 and 17 which are marked as MUST COALESCE.
__bound_tmp.0_18(ab) and __bound_tmp.0_17(ab)
LCK-2257.c: In function 'test.chkp':
LCK-2257.c:7:6: internal compiler error: SSA corruption
void test (int *p)
^
0xd3a93d fail_abnormal_edge_coalesce
../../gcc-5/gcc/tree-ssa-coalesce.c:927
0xd3b74c coalesce_partitions
../../gcc-5/gcc/tree-ssa-coalesce.c:1230
0xd3bd02 coalesce_ssa_name()
../../gcc-5/gcc/tree-ssa-coalesce.c:1375
0xcd82d3 remove_ssa_form
../../gcc-5/gcc/tree-outof-ssa.c:1018
0xcd8b3d rewrite_out_of_ssa(ssaexpand*)
../../gcc-5/gcc/tree-outof-ssa.c:1252
0x7b5c23 execute
../../gcc-5/gcc/cfgexpand.c:5932
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.
