Function layout_stability_issue_warnings 

pub fn layout_stability_issue_warnings(
    layout: &Layout,
    max_mach: Option<Peak>,
) -> Vec<IssueWarning>

The stability issues a design’s shape meets, on a flight whose top Mach number is max_mach (ADR-189): #64 for its forward-swept fin sets past FORWARD_SWEEP_MACH, then #325 for its fin sets that share a station, then #326 for its freeform fin sets at any speed (FREEFORM_FIN_MARGIN_CAL). They are errors in hpr’s normal force, not its drag, so a flight on a drag of its own meets them and one on a normal-force table of its own doesn’t, as with stability_issue_warnings. A flight with no top Mach number meets none.