https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84217
--- Comment #1 from G. Steinmetz <gs...@t-online.de> ---
When configured with --enable-checking=release, an additional -ftrapv
is necessary :
$ gfortran-8-20180204 -c z1.f90 -fopenacc
$
$ gfortran-8-20180204 -c z1.f90 -fopenacc -ftrapv
during RTL pass: expand
z1.f90:3:0:
!$acc parallel loop tile(2,3)
internal compiler error: in emit_library_call_value_1, at calls.c:4865
0x7f4732 emit_library_call_value_1(int, rtx_def*, rtx_def*, libcall_type,
machine_mode, int, std::pair<rtx_def*, machine_mode>*)
../../gcc/calls.c:4864
0xab5eb7 emit_library_call_value(rtx_def*, rtx_def*, libcall_type,
machine_mode, rtx_def*, machine_mode, rtx_def*, machine_mode)
../../gcc/rtl.h:4162
0xab5eb7 expand_binop(machine_mode, optab_tag, rtx_def*, rtx_def*, rtx_def*,
int, optab_methods)
../../gcc/optabs.c:1794
0x8e0cd7 expand_mult(machine_mode, rtx_def*, rtx_def*, rtx_def*, int, bool)
../../gcc/expmed.c:3536
0x900454 expand_expr_real_2(separate_ops*, rtx_def*, machine_mode,
expand_modifier)
../../gcc/expr.c:8948
0x80197d expand_gimple_stmt_1
../../gcc/cfgexpand.c:3729
0x80197d expand_gimple_stmt
../../gcc/cfgexpand.c:3790
0x802d5b expand_gimple_basic_block
../../gcc/cfgexpand.c:5810
0x808166 execute
../../gcc/cfgexpand.c:6416
