Jens Johansen
857fca710f
The dill file has an index at the end. The last 4 bytes of that index is a size that indicates how big the file is. This is done to support concatenated dill files. If the dill is invalid and the size is read as 0 both the VM and the dart kernel reader will go into an infinite loop where it allocates another list entry on every loop iteration (making the whole loop not infinate because we will run out of ram soon enough). This CL fixes the issue by checking the size to be possitive. Change-Id: I42da0557c6d4a274fdbe1a729fdaf5b8f149b187 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/148538 Reviewed-by: Johnni Winther <johnniwinther@google.com> Reviewed-by: Martin Kustermann <kustermann@google.com> Commit-Queue: Jens Johansen <jensj@google.com>
Dart Kernel
Dart Kernel is a small high-level language derived from Dart. It is designed for use as an intermediate format for whole-program analysis and transformations, and to be consumed by codegen and execution backends.
The kernel language has an in-memory representation in Dart and can be serialized as binary or text.
Both the kernel language and its implementations are unstable and are under development.
This package contains the Dart part of the implementation and contains:
- A transformable IR for the kernel language
- Serialization of kernel code
Note: The APIs in this package are in an early state; developers should be careful about depending on this package. In particular, there is no semver contract for release versions of this package. Please depend directly on individual versions.
See ast.dart for the in-memory IR, or binary.md for a description of the binary format. For now, the textual format is very ad-hoc and cannot be parsed back in.