https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85701
Bug ID: 85701
Summary: ICE in mark_scope_block_unused, at tree-ssa-live.c:364
Product: gcc
Version: 9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
With invalid code (s is not a variable) (but compiles with -g) :
$ cat z1.f90
subroutine s
!$acc declare copy(s)
end
$ cat z2.f90
subroutine s
!$acc declare present(s)
end
$ gfortran-9-20180506 -c z1.f90 -fopenacc -O0 -g
$
$ gfortran-9-20180506 -c z1.f90 -fopenacc -O0
during RTL pass: expand
z1.f90:1:0:
subroutine s
internal compiler error: Segmentation fault
0xb9e99f crash_signal
../../gcc/toplev.c:325
0x7fca10 clear_tree_used
../../gcc/cfgexpand.c:1725
0x80881a expand_used_vars
../../gcc/cfgexpand.c:2052
0x80a922 execute
../../gcc/cfgexpand.c:6292
$ gfortran-9-20180506 -c z1.f90 -fopenacc -O1
during GIMPLE pass: ssa
z1.f90:1:0:
subroutine s
internal compiler error: Segmentation fault
0xb9e99f crash_signal
../../gcc/toplev.c:325
0xc9c6c1 mark_scope_block_unused
../../gcc/tree-ssa-live.c:364
0xc9c6ef mark_scope_block_unused
../../gcc/tree-ssa-live.c:368
0xc9d5c1 remove_unused_locals()
../../gcc/tree-ssa-live.c:719
0xada764 execute_function_todo
../../gcc/passes.c:1972
0xadb0a9 execute_todo
../../gcc/passes.c:2048
