Negative coverage: borrow_check_statement / if / premise borrow_check_block(env, assumptions, state, else_block, places_live_on_exit) => else_state
Premise at line 220. Observed failure causes: failed_judgment.
if| Line | Coverage | Source |
|---|---|---|
| 209 | ✗ | (borrow_check_expr_has_ty( env, assumptions, state, condition, Ty::bool(), Either(then_block, else_block).live_before(env, &state, places_live_on_exit), ) => state) |
| 219 | 1 | (borrow_check_block(env, assumptions, state, then_block, places_live_on_exit) => then_state) |
| 220 | 1 | (borrow_check_block(env, assumptions, state, else_block, places_live_on_exit) => else_state) |
| 223 | N/A | (let state: FlowState = Union((then_state, else_state)).upcast()) |
| ──────── ("if") | ||
| 225 | 14 | (borrow_check_statement(env, assumptions, state, Stmt::If { condition, then_block, else_block }, places_live_on_exit) => (env, state)) |
1 test failed proving this premise:
Source location: tests/mir_typeck.rs:147
fn foo (b: bool) -> u32 {
if b {
return 1 _ u32;
} else {
return false;
}
}Failed proof tree
check_all_crates failedmod.rs:41rule "check all prefixes"mod.rs:53check_crate failedmod.rs:60rule "check crate"mod.rs:73check_crate_item failedmod.rs:163rule "free fn"mod.rs:191check_free_fn failedfns.rs:14rule "check free fn"fns.rs:24check_fn failedfns.rs:31rule "check fn"fns.rs:55check_fn_body failedfns.rs:62rule "expr fn body"fns.rs:90borrow_check failednll.rs:126rule "borrow_check"nll.rs:137borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "if"nll.rs:220borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "return"nll.rs:281prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19
rule "if"nll.rs:220borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "return"nll.rs:281prove_assignable failednll.rs:937rule "subtype"nll.rs:955prove failedfunction.rs:250rulefunction.rs:250prove_wc_list failedprove_wc_list.rs:11rule "some"prove_wc_list.rs:29prove_wc failedprove_wc.rs:23rule "subtype"prove_wc.rs:133prove_sub failedprove_sub.rs:13rule "normalize-l"prove_sub.rs:28prove_normalize failedprove_normalize.rs:19
rule "normalize-r"prove_sub.rs:35prove_normalize failedprove_normalize.rs:19