Rust: Add tests for std::Pin.

Author: geoffw0

rust/ql/test/library-tests/dataflow/modeled/inline-flow.expected

@@ -55,6 +55,12 @@ edges
 | main.rs:84:29:84:29 | [post] y [&ref] | main.rs:85:33:85:33 | y [&ref] | provenance |  |
 | main.rs:84:32:84:41 | source(...) | main.rs:84:29:84:29 | [post] y [&ref] | provenance | MaD:7 |
 | main.rs:85:33:85:33 | y [&ref] | main.rs:85:18:85:34 | ...::read(...) | provenance | MaD:6 |
+| main.rs:100:13:100:17 | mut i | main.rs:105:14:105:14 | i | provenance |  |
+| main.rs:100:21:100:30 | source(...) | main.rs:100:13:100:17 | mut i | provenance |  |
+| main.rs:114:13:114:18 | mut ms [MyStruct] | main.rs:119:14:119:15 | ms [MyStruct] | provenance |  |
+| main.rs:114:22:114:49 | MyStruct {...} [MyStruct] | main.rs:114:13:114:18 | mut ms [MyStruct] | provenance |  |
+| main.rs:114:38:114:47 | source(...) | main.rs:114:22:114:49 | MyStruct {...} [MyStruct] | provenance |  |
+| main.rs:119:14:119:15 | ms [MyStruct] | main.rs:119:14:119:19 | ms.val | provenance |  |
 nodes
 | main.rs:12:9:12:9 | a [Some] | semmle.label | a [Some] |
 | main.rs:12:13:12:28 | Some(...) [Some] | semmle.label | Some(...) [Some] |
@@ -108,6 +114,14 @@ nodes
 | main.rs:84:32:84:41 | source(...) | semmle.label | source(...) |
 | main.rs:85:18:85:34 | ...::read(...) | semmle.label | ...::read(...) |
 | main.rs:85:33:85:33 | y [&ref] | semmle.label | y [&ref] |
+| main.rs:100:13:100:17 | mut i | semmle.label | mut i |
+| main.rs:100:21:100:30 | source(...) | semmle.label | source(...) |
+| main.rs:105:14:105:14 | i | semmle.label | i |
+| main.rs:114:13:114:18 | mut ms [MyStruct] | semmle.label | mut ms [MyStruct] |
+| main.rs:114:22:114:49 | MyStruct {...} [MyStruct] | semmle.label | MyStruct {...} [MyStruct] |
+| main.rs:114:38:114:47 | source(...) | semmle.label | source(...) |
+| main.rs:119:14:119:15 | ms [MyStruct] | semmle.label | ms [MyStruct] |
+| main.rs:119:14:119:19 | ms.val | semmle.label | ms.val |
 subpaths
 testFailures
 #select
@@ -121,3 +135,5 @@ testFailures
 | main.rs:47:38:47:38 | n | main.rs:41:30:41:39 | source(...) | main.rs:47:38:47:38 | n | $@ | main.rs:41:30:41:39 | source(...) | source(...) |
 | main.rs:63:22:63:22 | m | main.rs:58:22:58:31 | source(...) | main.rs:63:22:63:22 | m | $@ | main.rs:58:22:58:31 | source(...) | source(...) |
 | main.rs:85:18:85:34 | ...::read(...) | main.rs:84:32:84:41 | source(...) | main.rs:85:18:85:34 | ...::read(...) | $@ | main.rs:84:32:84:41 | source(...) | source(...) |
+| main.rs:105:14:105:14 | i | main.rs:100:21:100:30 | source(...) | main.rs:105:14:105:14 | i | $@ | main.rs:100:21:100:30 | source(...) | source(...) |
+| main.rs:119:14:119:19 | ms.val | main.rs:114:38:114:47 | source(...) | main.rs:119:14:119:19 | ms.val | $@ | main.rs:114:38:114:47 | source(...) | source(...) |

rust/ql/test/library-tests/dataflow/modeled/main.rs

@@ -87,9 +87,64 @@ mod ptr {
     }
 }
 
+use std::pin::Pin;
+use std::pin::pin;
+
+#[derive(Clone)]
+struct MyStruct {
+    val: i64,
+}
+
+fn test_pin() {
+    {
+        let mut i = source(40);
+        let mut pin1 = Pin::new(&i);
+        let mut pin2 = Box::pin(i);
+        let mut pin3 = Box::into_pin(Box::new(i));
+        let mut pin4 = pin!(i);
+        sink(i); // $  hasValueFlow=40
+        sink(*pin1); // $ MISSING: hasValueFlow=40
+        sink(*Pin::into_inner(pin1)); // $ MISSING: hasValueFlow=40
+        sink(*pin2); // $ MISSING: hasValueFlow=40
+        sink(*pin3); // $ MISSING: hasValueFlow=40
+        sink(*pin4); // $ MISSING: hasValueFlow=40
+    }
+
+    {
+        let mut ms = MyStruct { val: source(41) };
+        let mut pin1 = Pin::new(&ms);
+        let mut pin2 = Box::pin(ms.clone());
+        let mut pin3 = Box::into_pin(Box::new(ms.clone()));
+        let mut pin4 = pin!(&ms);
+        sink(ms.val); // $  hasValueFlow=41
+        sink(pin1.val); // $ MISSING: hasValueFlow=41
+        sink(Pin::into_inner(pin1).val); // $ MISSING: hasValueFlow=41
+        sink(pin2.val); // $ MISSING: hasValueFlow=41
+        sink(pin3.val); // $ MISSING: hasValueFlow=41
+        sink(pin4.val); // $ MISSING: hasValueFlow=41
+    }
+
+    unsafe {
+        let mut ms = MyStruct { val: source(42) };
+        let mut pin5 = Pin::new_unchecked(&ms);
+        sink(pin5.val); // $ MISSING: hasValueFlow=42
+        sink(Pin::into_inner_unchecked(pin5).val); // $ MISSING: hasValueFlow=40
+    }
+
+    {
+        let mut ms = MyStruct { val: source(43) };
+        let mut ms2 = MyStruct { val: source(44) };
+        let mut pin = Pin::new(&mut ms);
+        sink(pin.val); // $ MISSING: hasValueFlow=43
+        pin.set(ms2);
+        sink(pin.val); // $ MISSING: hasValueFlow=44
+    }
+}
+
 fn main() {
     option_clone();
     result_clone();
     i64_clone();
     my_clone::wrapper_clone();
+    test_pin();
 }