https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90978
Bug ID: 90978 Summary: A suspicious code in df-scan.c since r160348 Product: gcc Version: 10.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: tree-optimization Assignee: unassigned at gcc dot gnu.org Reporter: marxin at gcc dot gnu.org CC: hubicka at gcc dot gnu.org Target Milestone: --- clang-static-analyzer reports the following projects: $ cat -n gcc/df-scan.c | less 3791 struct df_scan_problem_data *problem_data 3792 = (struct df_scan_problem_data *) df_scan->problem_data; 3793 gcc_unreachable (); 3794 df->exit_block_uses = BITMAP_ALLOC (&problem_data->reg_bitmaps); 3795 changed = true; Is the gcc_unreachable a desirable code?