https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94323
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |aoliva at gcc dot gnu.org --- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> --- The cause is again DEBUG_BEGIN_STMTs. cp_parser_statement_expr's 4941 return cp_expr (expr, combined_loc); now calls protected_set_expr_location on expr, which for -g0 is a CLEANUP_POINT_EXPR, but with -g is STATEMENT_LIST which contains a DEBUG_BEGIN_STMT and that CLEANUP_POINT_EXPR. protected_set_expr_location will do: 5147 if (CAN_HAVE_LOCATION_P (t)) 5148 SET_EXPR_LOCATION (t, loc); so overrides EXPR_LOCATION on the CLEANUP_POINT_EXPR, but in the -g case doesn't. Do we want protected_set_expr_location to handle STATEMENT_LISTs that only contain a single non-DEBUG_* stmt by recursing into that?