https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93349
--- Comment #2 from David Malcolm <dmalcolm at gcc dot gnu.org> --- Within the analyzer exploded_graph::process_node has: 2312 /* Update cfun and input_location in case of an ICE: make it easier to 2313 track down which source construct we're failing to handle. */ 2314 auto_cfun sentinel (node->get_function ()); 2315 const gimple *stmt = point.get_stmt (); 2316 if (stmt) 2317 input_location = stmt->location; It resets cfun, but never resets input_location. input_location is later used by gimplify_expr, called via gimplify_and_add within omp-simd-clone.c, which has: 14492 if (!gimple_seq_empty_p (*pre_p)) 14493 annotate_all_with_location_after (*pre_p, pre_last_gsi, input_location); thus using whatever the value of input_location. Presumably this code is implicitly assuming that input_location is some arbitrary value *not* in the block tree, which is violated by the analyzer code above.
