https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89392
Bug ID: 89392
Summary: [7/8/9 Regression] ICE in bitmap_bit_p, at
bitmap.c:978
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Started with gcc-7 :
$ cat z1.cc
typedef struct {
virtual void f () {}
} s;
s t;
$ g++-6 -c z1.cc -O1 -flto -fvtable-verify=std
$
$ g++-9-20190217 -c z1.cc -O0 -flto -fvtable-verify=std
$
$ g++-9-20190217 -c z1.cc -O1 -flto -fvtable-verify=std
during GIMPLE pass: ealias
z1.cc: In function '_GLOBAL__sub_I.00099_t':
z1.cc:4:4: internal compiler error: Segmentation fault
4 | s t;
| ^
0xba166f crash_signal
../../gcc/toplev.c:326
0x7bdb4e bitmap_bit_p(bitmap_head*, int)
../../gcc/bitmap.c:978
0xd2c858 do_ds_constraint
../../gcc/tree-ssa-structalias.c:1713
0xd2c858 do_complex_constraint
../../gcc/tree-ssa-structalias.c:1811
0xd2c858 solve_graph
../../gcc/tree-ssa-structalias.c:2757
0xd34fba solve_constraints
../../gcc/tree-ssa-structalias.c:7218
0xd37263 compute_points_to_sets
../../gcc/tree-ssa-structalias.c:7275
0xd37263 compute_may_aliases()
../../gcc/tree-ssa-structalias.c:7638
0xadb711 execute_function_todo
../../gcc/passes.c:1949
0xadc7f2 execute_todo
../../gcc/passes.c:2031
