Gap analysis — c1 in decision #518
scry-mcdc · library/core/src/slice/mod.rs:4326 · branch 3460
Status: GAP
What you need
To prove condition c1 independently affects the decision, you need a row where c1 = T and the outcome differs from row 787 (where c1 = F).
Required condition vector:
c0 = F c1 = T c2 = F c3 = F c4 = F c5 = T c6 = * c7 = * c8 = * c9 = * c10 = * c11 = * c12 = * c13 = *
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_d518_c1() {
// Verdict: scry-mcdc
// Source: library/core/src/slice/mod.rs:4326
// Branch: 3460
//
// TODO: drive the function so condition c1 evaluates to the
// value above and the resulting decision outcome differs from
// the existing pair row.
todo!("witness viz: gap drill-down for d#518/c1");
}
After adding the test, re-run: witness instrument && witness run --invoke run_row_NEW && witness report. The condition should flip from gap to proved.