A constructed type, `C<T>`, where `T` is the type parameter of `C`, is represented
in the database as the corresponding unbound generict type `C<>`. Consequently, the
type conversion library, which only considers `ConstructedType`s, does not handle
all implicit conversions. For example, in
```
interface I<in T1, T2> where T1 : C
```
there should be an implicit conversion from `I<C, T2>` to `I<T1, T2>` (=`I<>`).
The translation of `IsExpr` created a sanity check to fail since it generated
a Phi node that had only one source: if a variable was declared as part of the `IsExpr`, a conditional branch was generated, and the variable was defined only in the true successor; this has been changes so that the declaration happens before the conditional branch, and the variable is uninitialized (this removed the need for the `isInitializedByElement` predicate from `TranslatedDeclarationBase`, so that has been removed) and only the assignment happens in the true successor block (so now the two inputs of the Phi node are the result of the `Uninitialized` instruction and the `Store` instruction from the true successor block).
More accurate type sizes using language specific predicates from `IRCSharpLanguage.qll`.
Added immediate operands for some `PointerX` (add, sub) instructions.
Some other minor consistency fixes.
Added support for pointers and pointer operations and made sure all loads are correct.
Added support for the unsafe stmt.
Added basic support for the fixed stmt (for now we ignore the pinning).
Fixed a bug where assignments of the form `Object obj1 = obj2` would not generate a load instruction for `obj2` (see `raw_ir.expected`).
Added an extra `Load` for object creations that involve structs. This is because the variable that represents the struct should hold the actual struct, not a reference to it.
Refactored the piece of code that decided if a particular expr needs a load instruction and improved the code sharing between `TranslatedExpr.qll` and `TranslatedElement.qll` by creating 2 predicates that tell if a certain expr does or does not need a load.
Added support for `in`, `out` and `ref` parameters.
In theory this bug could associated CaptureOutNodes with the wrong transitively called
callable. However, in practice I could not create a test case that revealed incorrect
behaviour. I've included one such test case in the commit.
I believe that the cause of this is that OutNode::getACall() is not actually used in the
data flow libraries. Instead, DataFlowDispatch::Cached::getAnOutNode is the predicate
which is used to associated OutNode's with DataFlowCall's in practice, and that is always
used in a context that correctly binds the runtime target of the call.
Added basic support for the using stmt, checked stmt, unchecked stmt
Note that the translations do not use the compiler generated element framework and hence they are just rough approximations. For accuracy, in the future their translation should use it.
Added support for continue stmt.
Minimal refactoring of the `TranslatedSpecificJump` classes.
Added a new test file, `jumps.cs` and updated the expected output.
