[Bug fortran/84955] [7/8 Regression] ICE in substitute_and_fold_dom_walker, at tree-ssa-propagate.c:1089

[gscfq@t-online.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84955

--- Comment #1 from G. Steinmetz <gscfq@t-online.de> ---

Configured with --enable-checking=yes :


$ gfortran-8-20180318 -c z1.f90 -O2 -fopenacc
during GIMPLE pass: fixup_cfg
z1.f90:11:0:

 end

internal compiler error: in operator[], at vec.h:841
0xd2490f vec<edge_def*, va_gc, vl_embed>::operator[](unsigned int)
        ../../gcc/vec.h:841
0xd2490f extract_true_false_edges_from_block(basic_block_def*, edge_def**,
edge_def**)
        ../../gcc/tree-cfg.c:9194
0xd29e5d gimple_verify_flow_info
        ../../gcc/tree-cfg.c:5740
0x87aeb3 verify_flow_info()
        ../../gcc/cfghooks.c:263
0xc09a71 execute_function_todo
        ../../gcc/passes.c:2006
0xc0a499 execute_todo
        ../../gcc/passes.c:2048