From fb20b5152822462de2b5482f590c8f18078ec70b Mon Sep 17 00:00:00 2001 From: Jorge Aparicio Date: Wed, 12 Apr 2017 10:43:36 -0500 Subject: add `claim_mut` --- tests/cfail/claim_mut.rs | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 tests/cfail/claim_mut.rs (limited to 'tests/cfail') diff --git a/tests/cfail/claim_mut.rs b/tests/cfail/claim_mut.rs new file mode 100644 index 0000000..0d1dffd --- /dev/null +++ b/tests/cfail/claim_mut.rs @@ -0,0 +1,34 @@ +#![feature(const_fn)] + +extern crate cortex_m_srp; + +use cortex_m_srp::{C2, P2, Resource}; + +static R1: Resource = Resource::new(0); + +fn j1(mut prio: P2) { + // OK only one `&mut-` reference to the data + let r1: &mut i32 = R1.claim_mut(&mut prio); +} + +fn j2(prio: P2) { + // OK two `&-` references to the same data + let r1: &i32 = R1.claim(&prio); + let another_r1: &i32 = R1.claim(&prio); +} + +fn j3(mut prio: P2) { + // CAN'T have a `&-` reference and a `&mut-` reference to the same data + let r1: &i32 = R1.claim(&prio); + let another_r1: &mut i32 = R1.claim_mut(&mut prio); + //~^ error +} + +fn j4(mut prio: P2) { + // CAN'T have two `&mut-` references to the same data + let r1: &mut i32 = R1.claim_mut(&mut prio); + let another_r1: &mut i32 = R1.claim_mut(&mut prio); + //~^ error +} + +fn main() {} -- cgit v1.2.3