// Tests that two closures cannot simultaneously have mutable // and immutable access to the variable. Issue #6801. fn get(x: &isize) -> isize { *x } fn set(x: &mut isize) { *x = 4; } fn a() { let mut x = 3; let c1 = || x = 4; let c2 = || x * 5; //~^ ERROR cannot borrow `x` as immutable because it is also borrowed as mutable drop(c1); } fn b() { let mut x = 3; let c1 = || set(&mut x); let c2 = || get(&x); //~^ ERROR cannot borrow `x` as immutable because it is also borrowed as mutable drop(c1); } fn c() { let mut x = 3; let c1 = || set(&mut x); let c2 = || x * 5; //~^ ERROR cannot borrow `x` as immutable because it is also borrowed as mutable drop(c1); } fn d() { let mut x = 3; let c2 = || x * 5; x = 5; //~^ ERROR cannot assign to `x` because it is borrowed drop(c2); } fn e() { let mut x = 3; let c1 = || get(&x); x = 5; //~^ ERROR cannot assign to `x` because it is borrowed drop(c1); } fn f() { let mut x: Box<_> = Box::new(3); let c1 = || get(&*x); *x = 5; //~^ ERROR cannot assign to `*x` because it is borrowed drop(c1); } fn g() { struct Foo { f: Box<isize> } let mut x: Box<_> = Box::new(Foo { f: Box::new(3) }); let c1 = || get(&*x.f); *x.f = 5; //~^ ERROR cannot assign to `*x.f` because it is borrowed drop(c1); } fn h() { struct Foo { f: Box<isize> } let mut x: Box<_> = Box::new(Foo { f: Box::new(3) }); let c1 = || get(&*x.f); let c2 = || *x.f = 5; //~^ ERROR cannot borrow `x` as mutable because it is also borrowed as immutable drop(c1); } fn main() { }