diff options
Diffstat (limited to 'src/test/ui/borrowck/borrowck-issue-14498.rs')
-rw-r--r-- | src/test/ui/borrowck/borrowck-issue-14498.rs | 110 |
1 files changed, 0 insertions, 110 deletions
diff --git a/src/test/ui/borrowck/borrowck-issue-14498.rs b/src/test/ui/borrowck/borrowck-issue-14498.rs deleted file mode 100644 index 003533a51..000000000 --- a/src/test/ui/borrowck/borrowck-issue-14498.rs +++ /dev/null @@ -1,110 +0,0 @@ -// This tests that we can't modify Box<&mut T> contents while they -// are borrowed (#14498). -// -// Also includes tests of the errors reported when the Box in question -// is immutable (#14270). - - - -struct A { a: isize } -struct B<'a> { a: Box<&'a mut isize> } - -fn indirect_write_to_imm_box() { - let mut x: isize = 1; - let y: Box<_> = Box::new(&mut x); - let p = &y; - ***p = 2; //~ ERROR cannot assign to `***p` - drop(p); -} - -fn borrow_in_var_from_var() { - let mut x: isize = 1; - let mut y: Box<_> = Box::new(&mut x); - let p = &y; - let q = &***p; - **y = 2; //~ ERROR cannot assign to `**y` because it is borrowed - drop(p); - drop(q); -} - -fn borrow_in_var_from_var_via_imm_box() { - let mut x: isize = 1; - let y: Box<_> = Box::new(&mut x); - let p = &y; - let q = &***p; - **y = 2; //~ ERROR cannot assign to `**y` because it is borrowed - drop(p); - drop(q); -} - -fn borrow_in_var_from_field() { - let mut x = A { a: 1 }; - let mut y: Box<_> = Box::new(&mut x.a); - let p = &y; - let q = &***p; - **y = 2; //~ ERROR cannot assign to `**y` because it is borrowed - drop(p); - drop(q); -} - -fn borrow_in_var_from_field_via_imm_box() { - let mut x = A { a: 1 }; - let y: Box<_> = Box::new(&mut x.a); - let p = &y; - let q = &***p; - **y = 2; //~ ERROR cannot assign to `**y` because it is borrowed - drop(p); - drop(q); -} - -fn borrow_in_field_from_var() { - let mut x: isize = 1; - let mut y = B { a: Box::new(&mut x) }; - let p = &y.a; - let q = &***p; - **y.a = 2; //~ ERROR cannot assign to `**y.a` because it is borrowed - drop(p); - drop(q); -} - -fn borrow_in_field_from_var_via_imm_box() { - let mut x: isize = 1; - let y = B { a: Box::new(&mut x) }; - let p = &y.a; - let q = &***p; - **y.a = 2; //~ ERROR cannot assign to `**y.a` because it is borrowed - drop(p); - drop(q); -} - -fn borrow_in_field_from_field() { - let mut x = A { a: 1 }; - let mut y = B { a: Box::new(&mut x.a) }; - let p = &y.a; - let q = &***p; - **y.a = 2; //~ ERROR cannot assign to `**y.a` because it is borrowed - drop(p); - drop(q); -} - -fn borrow_in_field_from_field_via_imm_box() { - let mut x = A { a: 1 }; - let y = B { a: Box::new(&mut x.a) }; - let p = &y.a; - let q = &***p; - **y.a = 2; //~ ERROR cannot assign to `**y.a` because it is borrowed - drop(p); - drop(q); -} - -fn main() { - indirect_write_to_imm_box(); - borrow_in_var_from_var(); - borrow_in_var_from_var_via_imm_box(); - borrow_in_var_from_field(); - borrow_in_var_from_field_via_imm_box(); - borrow_in_field_from_var(); - borrow_in_field_from_var_via_imm_box(); - borrow_in_field_from_field(); - borrow_in_field_from_field_via_imm_box(); -} |