709: new feature flag: `deterministic` r=MarkMcCaskey a=YaronWittenstein
The motivation for the PR is for introducing a new feature flag called `deterministic`.
When `deterministic` will be enabled (turned-off by default) it'll guarantee deterministic
execution of wasm programs across different hardware/circumstances.
This is critical for Blockchain projects that require execution to be deterministic
in order to reach a consensus of the state transition of each smart-contract transaction.
Co-authored-by: Yaron Wittenstein <yaron.wittenstein@gmail.com>
Co-authored-by: Yaron Wittenstein <yaronwittenstein@users.noreply.github.com>
Co-authored-by: Mark McCaskey <5770194+markmccaskey@users.noreply.github.com>
Co-authored-by: Mark McCaskey <mark@wasmer.io>
1017: Add a 'clear' method to map. r=nlewycky a=nlewycky
# Description
Motivated by work on the `nlewycky/inkwell-lifetimes` branch. No callers yet on master, but we use it on the branch and I'd like to merge in pieces.
Co-authored-by: Nick Lewycky <nick@wasmer.io>
Before this patch:
```
$ cargo run -- run panic_index_oob_all_backends.wasm
Error: ExportNotFound { name: "main" }
```
With this patch:
```sh
$ cargo run -- run panic_index_oob_all_backends.wasm
Error: Can't instantiate module: LinkError([Generic { message: "Trying to read the `0` global that isn\'t properly initialized." }])
```
Fix https://github.com/wasmerio/wasmer/issues/979.
When we try to get a global that doesn't exist, a panic is
generated. This patch just skip that path, and let a proper error be
generated later.
With this patch, we get:
```sh
$ cargo run -- run panic_index_oob_all_backends.wasm
Error: ExportNotFound { name: "main" }
```
which is kind of the expected behavior in such situation.
977: fix(runtime-core) Remove unnecessary implementation of `WasmTypeList` r=Hywan a=Hywan
The unit tests `test_func_arity_*` covers all possibilities, from 0 to
12. Removing this specific implementation of `WasmTypeList` for `(A,)`
doesn't break the test cases.
Also, the `impl_traits!` macro already implement `WasmTypeList` for
`(A,)` with `impl_traits!([transparent] S1, A)`. It's not clear why
`rustc` doesn't detect that though.
Co-authored-by: Ivan Enderlin <ivan.enderlin@hoa-project.net>
The unit tests `test_func_arity_*` covers all possibilities, from 0 to
12. Removing this specific implementation of `WasmTypeList` for `(A,)`
doesn't break the test cases.
Also, the `impl_traits!` macro already implement `WasmTypeList` for
`(A,)` with `impl_traits!([transparent] S1, A)`. It's not clear why
`rustc` doesn't detect that though.
By exposing the target information through `CompilerConfig`,
compiler(only LLVM at the moment) could create a machine with
different CPU feature flags other than current host, which makes it
capable to "cross compile" to some degree.
Update #959
The `field-offset` crate is unmaintained. When using its `offset_of!`
macro on a struct with a field of type `std::ptr::NonNull`, in release
mode, it generates a sigill.
This patch removes the `field-offset` crate, and implements a custom
`offset_of!` macro.
