Gap analysis — c0 in decision #234
scry-mcdc · lib.rs:2979 · branch 1827
Status: GAP
What you need
To prove condition c0 independently affects the decision, you need a row where c0 = T and the outcome differs from row 710 (where c0 = F).
Required condition vector:
c0 = T c1 = F c2 = * c3 = T
Conditions marked * were short-circuited in the baseline row; the new test must drive inputs so they get evaluated to either T or F.
Suggested test stub
#[test]
fn closes_gap_d234_c0() {
// Verdict: scry-mcdc
// Source: lib.rs:2979
// Branch: 1827
//
// TODO: drive the function so condition c0 evaluates to the
// value above and the resulting decision outcome differs from
// the existing pair row.
todo!("witness viz: gap drill-down for d#234/c0");
}
After adding the test, re-run: witness instrument && witness run --invoke run_row_NEW && witness report. The condition should flip from gap to proved.