Negative coverage: borrow_check_block / basic block / premise drop_places(env, assumptions, state, locals_to_drop, places_live_on_exit) => state
Premise at line 168. Observed failure causes: failed_judgment.
basic block| Line | Coverage | Source |
|---|---|---|
| 157 | ✗ | (let state = state.push_scope(&env.env, label, places_live_on_exit)?) |
| 158 | ✗ | (for_all(i in 0..stmts.len()) with(env, state) (borrow_check_statement( env, assumptions, state, &stmts[i], stmts[i+1..].live_before(env, &state, places_live_on_exit), ) => (env, state))) |
| 167 | N/A | (let locals_to_drop = state.locals_dropped_in_innermost_scope()) |
| 168 | 2 | (drop_places(env, assumptions, state, locals_to_drop, places_live_on_exit) => state) |
| 169 | N/A | (let state = state.pop_scope(label)) |
| ──────── ("basic block") | ||
| 171 | 75 | (borrow_check_block(env, assumptions, state, Block { label, stmts }, places_live_on_exit) => state) |
2 tests failed proving this premise:
Source location: tests/borrowck.rs:1997
fn foo() -> i32 {
exists<'r0, 'r1> {
let v2: &'r0 i32;
{
let v1: i32 = 0 _ i32;
v2 = &'r1 v1;
}
return *v2;
}
}
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 "exists"nll.rs:298borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "block"nll.rs:289borrow_check_block failednll.rs:144rule "basic block"nll.rs:168drop_places failednll.rs:669rule "drop_places"nll.rs:683access_permitted_by_loans failednll.rs:713rule "access_permitted_by_loans"nll.rs:726access_permitted_by_loan failednll.rs:733rule "borrow of disjoint places"nll.rs:748 (failed: if_false)rule "loan is dead"nll.rs:794loan_not_required_by_live_places failednll.rs:1096rule "loan_not_required_by_live_places"nll.rs:1121loan_not_required_by_live_place failednll.rs:1128rule "loan is not required by type"nll.rs:1148loan_not_required_by_parameter failednll.rs:1196rule "alias-ty RFC 1214"nll.rs:1232loan_not_required_by_parameters failednll.rs:1333rule "loan_not_required_by_parameters"nll.rs:1354loan_not_required_by_parameter failednll.rs:1196rule "rigid-ty"nll.rs:1216loan_not_required_by_parameters failednll.rs:1333rule "loan_not_required_by_parameters"nll.rs:1354loan_not_required_by_parameter failednll.rs:1196rule "lifetime"nll.rs:1306loan_cannot_outlive failednll.rs:1313rule "loan_cannot_outlive"nll.rs:1326 (failed: if_false)
rule "write-indirect"nll.rs:775 (failed: if_let)
Source location: tests/borrowck.rs:2069
fn foo() -> i32 {
exists<'r0, 'r1> {
let v2: &mut 'r0 i32;
{
let v1: i32 = 0 _ i32;
v2 = &mut 'r1 v1;
}
return *v2;
}
}
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 "exists"nll.rs:298borrow_check_block failednll.rs:144rule "basic block"nll.rs:159borrow_check_statement failednll.rs:176rule "block"nll.rs:289borrow_check_block failednll.rs:144rule "basic block"nll.rs:168drop_places failednll.rs:669rule "drop_places"nll.rs:683access_permitted_by_loans failednll.rs:713rule "access_permitted_by_loans"nll.rs:726access_permitted_by_loan failednll.rs:733rule "borrow of disjoint places"nll.rs:748 (failed: if_false)rule "loan is dead"nll.rs:794loan_not_required_by_live_places failednll.rs:1096rule "loan_not_required_by_live_places"nll.rs:1121loan_not_required_by_live_place failednll.rs:1128rule "loan is not required by type"nll.rs:1148loan_not_required_by_parameter failednll.rs:1196rule "alias-ty RFC 1214"nll.rs:1232loan_not_required_by_parameters failednll.rs:1333rule "loan_not_required_by_parameters"nll.rs:1354loan_not_required_by_parameter failednll.rs:1196rule "rigid-ty"nll.rs:1216loan_not_required_by_parameters failednll.rs:1333rule "loan_not_required_by_parameters"nll.rs:1354loan_not_required_by_parameter failednll.rs:1196rule "lifetime"nll.rs:1306loan_cannot_outlive failednll.rs:1313rule "loan_cannot_outlive"nll.rs:1326 (failed: if_false)
rule "write-indirect"nll.rs:775 (failed: if_let)