https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77516
Bug ID: 77516
Summary: ICE in is_gimple_min_invariant, at gimple-expr.c:706
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gerhard.steinmetz.fort...@t-online.de
Target Milestone: ---
Invalid code with a zero or negative safelen value.
Affects versions 5, 6, 7 (not supported below 5) at -Os, -O1 or higher.
$ cat z1.f90
program p
integer :: i, x
x = 0
!$omp simd safelen(0) reduction(+:x)
do i = 1, 8
x = x + 1
end do
print *, x
end
$ gfortran-7-20160904 -O2 -fopenmp z1.f90
z1.f90:4:0:
!$omp simd safelen(0) reduction(+:x)
internal compiler error: Segmentation fault
0xc2100f crash_signal
../../gcc/toplev.c:336
0x98a370 is_gimple_min_invariant(tree_node const*)
../../gcc/gimple-expr.c:706
0x9bc9d0 gimplify_compound_lval
../../gcc/gimplify.c:2208
0x9b394a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gimplify.c:10495
0x9c6ab5 gimplify_modify_expr
../../gcc/gimplify.c:4824
0x9b578a gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gimplify.c:10543
0x9b8ae6 gimplify_stmt(tree_node**, gimple**)
../../gcc/gimplify.c:5805
0x9b9621 gimplify_and_add(tree_node*, gimple**)
../../gcc/gimplify.c:427
0x9b9621 gimplify_assign(tree_node*, tree_node*, gimple**)
../../gcc/gimplify.c:12062
0xb26abb lower_rec_input_clauses
../../gcc/omp-low.c:5249
0xb2b8b9 lower_omp_for
../../gcc/omp-low.c:15131
0xb1b946 lower_omp_1
../../gcc/omp-low.c:17041
0xb1b946 lower_omp
../../gcc/omp-low.c:17178
0xb1aadc lower_omp_1
../../gcc/omp-low.c:17017
0xb1aadc lower_omp
../../gcc/omp-low.c:17178
0xb1b47c lower_omp_1
../../gcc/omp-low.c:17026
0xb1b47c lower_omp
../../gcc/omp-low.c:17178
0xb2265f execute_lower_omp
../../gcc/omp-low.c:17913
0xb2265f execute
../../gcc/omp-low.c:17950
