extern crate cortex_m_rtfm as rtfm; use rtfm::{C3, P0, P2, Resource}; static R1: Resource<(), C3> = Resource::new(()); fn j1(prio: P2) { let ceil = prio.as_ceiling(); let c3 = ceil.raise( &R1, |ceil| { // forbidden: ceiling token can't outlive the critical section ceil //~ error } ); // Would be bad: lockless access to a resource with ceiling = 3 let r2 = R1.access(&prio, c3); } fn j2(prio: P0) { let c16 = rtfm::critical( |c16| { // forbidden: ceiling token can't outlive the critical section c16 //~ error }, ); // Would be bad: lockless access to a resource with ceiling = 16 let r1 = R1.access(&prio, c16); }