Use correct ABI for wasm32 by default #79998

devsnek · 2020-12-13T04:34:33Z

Introduces wasm32-unknown-bindgen for those wishing to use the bindgen compat abi. wasm32-* now uses the correct abi by default.

Fixes rustwasm/team#291

rust-highfive · 2020-12-13T04:34:36Z

r? @estebank

(rust-highfive has picked a reviewer for you, use r? to override)

nagisa · 2020-12-13T22:20:25Z

Using an environment variable to control compiler output is probably a no-go. It should be either a target option (possibly with a bouquet of new targets where the different ABIs make sense – target strings do have a dedicated ABI component just for this!) or a compiler flag under the -C category.

without worrying about which version of rustc they are invoking.

This problem is a temporary – eventually all tools will only interact with sufficiently new versions of the compiler. Adding an environment variable to control codegen is an insta-stable change that we'll have to maintain forever.

devsnek · 2020-12-13T22:33:00Z

@nagisa is there a specific direction you would prefer, and if so, where would I find the code that needs to be changed?

nagisa · 2020-12-13T22:42:08Z

Adding new targets for this non-bindgen compatible ABI would be the most conventional solution. An option in target spec's options could further facilitate that, though such an option is a question of either adding new targets or using a custom target json.

devsnek · 2020-12-13T23:57:07Z

@nagisa it sounds like you are suggesting that bindgen should continue to be the abi for wasm32 (that isn't emscripten), is that correct? I'd like to change it so that is not the default choice.

nagisa · 2020-12-14T13:07:51Z

bindgen should continue to be the abi for wasm32 (that isn't emscripten), is that correct?

Not really. I have little idea about what the requirements this particular tooling has. If there's tooling that requires different ABI/behaviour, make a new target and have the tooling in question (or users interacting with this tooling) use this new target.

To expand on why environment variables are not a right solution for this:

Environment variables are not tracked for changes (i.e. changing their value won't cause a rebuild or flush of an incremental cache);
Environment variable not being supported is a silent failure;
Probably many more things...

devsnek · 2020-12-14T16:36:30Z

@nagisa I added the new target, is there anything that needs to be updated in terms of tests?

alexcrichton · 2020-12-14T17:00:34Z

Personally I do not want to be the cause of adding a bindgen target to the compiler. As the author of wasm-bindgen I do not ever want to see that happen. If the C/Rust interop problem is bad enough then I would ask that wasm-bindgen is simply broken. I would consider it a failing of wasm-bindgen if it required a bindgen-specific target to get added to rustc, simply because of an ABI issue.

The current thinking has been that we should not do this. "Soon" (not entirely sure when) the default ABI is expected to change with multi-value and that time the Emscripten/Clang ABIs would match what wasm-bindgen expects.

devsnek · 2020-12-14T17:45:14Z

@alexcrichton if "soon" is "unknown" I'd request that we do something here.

alexcrichton · 2020-12-14T18:40:23Z

I don't know the timelines on the LLVM side, but I suspect it would be longer than 1-3 months. I personally view the addition of a new target as extremely costly and I don't think wasm-bindgen is anywhere near important enough to warrant its own target in the compiler.

I should also say I don't know how to fix wasm-bindgen. I realize adding a new target is easy to do, but I do not believe it is the correct solution to this problem.

devsnek · 2020-12-14T18:44:19Z

@alexcrichton i'm not personally a fan of adding a target either, that was requested by @nagisa. I'm happy to implement whatever can be agreed on, I just need to know what that is 😅.

alexcrichton · 2020-12-14T19:12:27Z

I don't mean to say adding a target is a bad recommendation, it's the best solution if this must be solved in the compiler. I just do not think it's a worthwhile solution given the problem here.

nagisa · 2020-12-14T23:46:26Z

r? @alexcrichton

nagisa · 2020-12-14T23:48:43Z

Alex, assigning you as the reviewer as you have most context as to what is happening in the bindgen land and it seems like you're against making changes to accommodate bindgen in the compiler.

alexcrichton · 2020-12-15T15:22:59Z

We had some discussion on Discord and the conclusion was that @devsnek was going to test out changes to bindgen instead of rustc since the C APIs in use are automatically bound by bindgen, and bindgen can bind the API as arg: &Foo instead of arg: Foo to get the two ABIs to match.

TheBlueMatt · 2021-01-09T21:43:09Z

compiler/rustc_target/src/abi/call/mod.rs

@@ -605,7 +605,7 @@ impl<'a, Ty> FnAbi<'a, Ty> {
            "nvptx64" => nvptx64::compute_abi_info(self),
            "hexagon" => hexagon::compute_abi_info(self),
            "riscv32" | "riscv64" => riscv::compute_abi_info(cx, self),
-            "wasm32" if cx.target_spec().os != "emscripten" => {
+            "wasm32" if cx.target_spec().os == "bindgen" => {


Does it still make sense to change this for WASI and leave unknown alone in the short term? While wasm_bindgen may change in the future so that unknown can be changed, it would be nice to go ahead and change the ABI for some target so that its possible to build C+WASM code that does struct passing by-value even if it cannot be interoperated with wasm_bindgen immediately.

Yeah that sounds reasonable to me!

Introduces `RUSTC_USE_WASM32_BINDGEN_COMPAT_ABI` env var to use the compat ABI if need.

devsnek · 2021-01-11T21:34:15Z

@alexcrichton updated to be wasi-only exception.

alexcrichton · 2021-01-11T22:14:41Z

@bors: r+

programmerjake · 2021-01-12T19:14:20Z

This seems worthy of mention in the release notes.

This will switch to use the clang/C WASM ABI instead of the wasm_bindgen WASM ABI as of rustc 1.51 (or nightly since [1]), allowing us to link C and Rust code in a single wasm binary. [1] rust-lang/rust#79998

Pkgsrc changes: * Remove one SunOS patch, apparently no longer needed. * Adapt one patch for Darwin, adjust cargo checksum accordingly. * Adjust bootstraps to version 1.50.0. Version 1.51.0 (2021-03-25) ============================ Language -------- - [You can now parameterize items such as functions, traits, and `struct`s by constant values in addition to by types and lifetimes.][79135] Also known as "const generics" E.g. you can now write the following. Note: Only values of primitive integers, `bool`, or `char` types are currently permitted. ```rust struct GenericArray<T, const LENGTH: usize> { inner: [T; LENGTH] } impl<T, const LENGTH: usize> GenericArray<T, LENGTH> { const fn last(&self) -> Option<&T> { if LENGTH == 0 { None } else { Some(&self.inner[LENGTH - 1]) } } } ``` Compiler -------- - [Added the `-Csplit-debuginfo` codegen option for macOS platforms.][79570] This option controls whether debug information is split across multiple files or packed into a single file. **Note** This option is unstable on other platforms. - [Added tier 3\* support for `aarch64_be-unknown-linux-gnu`, `aarch64-unknown-linux-gnu_ilp32`, and `aarch64_be-unknown-linux-gnu_ilp32` targets.][81455] - [Added tier 3 support for `i386-unknown-linux-gnu` and `i486-unknown-linux-gnu` targets.][80662] - [The `target-cpu=native` option will now detect individual features of CPUs.][80749] - [Rust now uses `inline-asm` for stack probes when used with LLVM 11.0.1+][77885] \* Refer to Rust's [platform support page][forge-platform-support] for more information on Rust's tiered platform support. Libraries --------- - [`Box::downcast` is now also implemented for any `dyn Any + Send + Sync` object.][80945] - [`str` now implements `AsMut<str>`.][80279] - [`u64` and `u128` now implement `From<char>`.][79502] - [`Error` is now implemented for `&T` where `T` implements `Error`.][75180] - [`Poll::{map_ok, map_err}` are now implemented for `Poll<Option<Result<T, E>>>`.][80968] - [`unsigned_abs` is now implemented for all signed integer types.][80959] - [`io::Empty` now implements `io::Seek`.][78044] - [`rc::Weak<T>` and `sync::Weak<T>`'s methods such as `as_ptr` are now implemented for `T: ?Sized` types.][80764] Stabilized APIs --------------- - [`Arc::decrement_strong_count`] - [`Arc::increment_strong_count`] - [`Once::call_once_force`] - [`Peekable::next_if_eq`] - [`Peekable::next_if`] - [`Seek::stream_position`] - [`array::IntoIter`] - [`panic::panic_any`] - [`ptr::addr_of!`] - [`ptr::addr_of_mut!`] - [`slice::fill_with`] - [`slice::split_inclusive_mut`] - [`slice::split_inclusive`] - [`slice::strip_prefix`] - [`slice::strip_suffix`] - [`str::split_inclusive`] - [`sync::OnceState`] - [`task::Wake`] Cargo ----- - [Added the `split-debuginfo` profile option to control the -Csplit-debuginfo codegen option.][cargo/9112] - [Added the `resolver` field to `Cargo.toml` to enable the new feature resolver and CLI option behavior.][cargo/8997] Version 2 of the feature resolver will try to avoid unifying features of dependencies where that unification could be unwanted. Such as using the same dependency with a `std` feature in a build scripts and proc-macros, while using the `no-std` feature in the final binary. See the [Cargo book documentation][[email protected]] for more information on the feature. Rustdoc ------- - [Rustdoc will now include documentation for methods available from `Deref` traits.][80653] - [You can now provide a `--default-theme` flag which sets the default theme to use for documentation.][79642] Various improvements to intra-doc links: - [You can link to non-path primitives such as `slice`.][80181] - [You can link to associated items.][74489] - [You can now include generic parameters when linking to items, like `Vec<T>`.][76934] Misc ---- - [You can now pass `--include-ignored` to tests (e.g. with `cargo test -- --include-ignored`) to include testing tests marked `#[ignore]`.][80053] Compatibility Notes ------------------- - [WASI platforms no longer use the `wasm-bindgen` ABI, and instead use the wasm32 ABI.][79998] - [`rustc` no longer promotes division, modulo and indexing operations to `const` that could fail.][80579] - [The minimum version of glibc for the following platforms has been bumped to version 2.31 for the distributed artifacts.][81521] - `armv5te-unknown-linux-gnueabi` - `sparc64-unknown-linux-gnu` - `thumbv7neon-unknown-linux-gnueabihf` - `armv7-unknown-linux-gnueabi` - `x86_64-unknown-linux-gnux32` Internal Only ------------- - [Consistently avoid constructing optimized MIR when not doing codegen][80718] [79135]: rust-lang/rust#79135 [74489]: rust-lang/rust#74489 [76934]: rust-lang/rust#76934 [79570]: rust-lang/rust#79570 [80181]: rust-lang/rust#80181 [79642]: rust-lang/rust#79642 [80945]: rust-lang/rust#80945 [80279]: rust-lang/rust#80279 [80053]: rust-lang/rust#80053 [79502]: rust-lang/rust#79502 [75180]: rust-lang/rust#75180 [79135]: rust-lang/rust#79135 [81521]: rust-lang/rust#81521 [80968]: rust-lang/rust#80968 [80959]: rust-lang/rust#80959 [80718]: rust-lang/rust#80718 [80653]: rust-lang/rust#80653 [80579]: rust-lang/rust#80579 [79998]: rust-lang/rust#79998 [78044]: rust-lang/rust#78044 [81455]: rust-lang/rust#81455 [80764]: rust-lang/rust#80764 [80749]: rust-lang/rust#80749 [80662]: rust-lang/rust#80662 [77885]: rust-lang/rust#77885 [cargo/8997]: rust-lang/cargo#8997 [cargo/9112]: rust-lang/cargo#9112 [[email protected]]: https://doc.rust-lang.org/nightly/cargo/reference/features.html#feature-resolver-version-2 [`Once::call_once_force`]: https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.call_once_force [`sync::OnceState`]: https://doc.rust-lang.org/stable/std/sync/struct.OnceState.html [`panic::panic_any`]: https://doc.rust-lang.org/stable/std/panic/fn.panic_any.html [`slice::strip_prefix`]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.strip_prefix [`slice::strip_suffix`]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.strip_prefix [`Arc::increment_strong_count`]: https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.increment_strong_count [`Arc::decrement_strong_count`]: https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.decrement_strong_count [`slice::fill_with`]: https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.fill_with [`ptr::addr_of!`]: https://doc.rust-lang.org/nightly/std/ptr/macro.addr_of.html [`ptr::addr_of_mut!`]: https://doc.rust-lang.org/nightly/std/ptr/macro.addr_of_mut.html [`array::IntoIter`]: https://doc.rust-lang.org/nightly/std/array/struct.IntoIter.html [`slice::split_inclusive`]: https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_inclusive [`slice::split_inclusive_mut`]: https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_inclusive_mut [`str::split_inclusive`]: https://doc.rust-lang.org/nightly/std/primitive.str.html#method.split_inclusive [`task::Wake`]: https://doc.rust-lang.org/nightly/std/task/trait.Wake.html [`Seek::stream_position`]: https://doc.rust-lang.org/nightly/std/io/trait.Seek.html#method.stream_position [`Peekable::next_if`]: https://doc.rust-lang.org/nightly/std/iter/struct.Peekable.html#method.next_if [`Peekable::next_if_eq`]: https://doc.rust-lang.org/nightly/std/iter/struct.Peekable.html#method.next_if_eq

Pkgsrc changes: * Add support for the big-endian arm64 NetBSD target (aarch64_be). * On NetBSD/i386, use the i586 (pentium) bootstrap kit variant in preference to i686. * Adjust patches, re-compute line offsets, re-compute crate checksums. * Remove a patch which was either integrated upstream and/or no longer applies. * Bump bootstraps to 1.50.0. * Move conditionals until after bsd.prefs.mk so that they work... * Default to "dist" build target if cross-compiling, but allow also to override via rust.BUILD_TARGET. * Allow overriding MAKE_JOBS_SAFE via rust.MAKE_JOBS_SAFE if you want a different trade-off between occasional breakage and performance. * Adjust platform.mk according to work already done in wip/rust/ * Add a patch to optimize the install.sh script used to install binary bootstraps to not do so many forks; use case/esac and parameter expansion instead of grep, sed and cut. * Drop building documentation for the binary bootstrap kits. This will also impact the lang/rust-bin package. For full documentation, build or install lang/rust as a package. Upstream changes: Version 1.51.0 (2021-03-25) ============================ Language -------- - [You can now parameterize items such as functions, traits, and `struct`s by constant values in addition to by types and lifetimes.][79135] Also known as "const generics" E.g. you can now write the following. Note: Only values of primitive integers, `bool`, or `char` types are currently permitted. ```rust struct GenericArray<T, const LENGTH: usize> { inner: [T; LENGTH] } impl<T, const LENGTH: usize> GenericArray<T, LENGTH> { const fn last(&self) -> Option<&T> { if LENGTH == 0 { None } else { Some(&self.inner[LENGTH - 1]) } } } ``` Compiler -------- - [Added the `-Csplit-debuginfo` codegen option for macOS platforms.][79570] This option controls whether debug information is split across multiple files or packed into a single file. **Note** This option is unstable on other platforms. - [Added tier 3\* support for `aarch64_be-unknown-linux-gnu`, `aarch64-unknown-linux-gnu_ilp32`, and `aarch64_be-unknown-linux-gnu_ilp32` targets.][81455] - [Added tier 3 support for `i386-unknown-linux-gnu` and `i486-unknown-linux-gnu` targets.][80662] - [The `target-cpu=native` option will now detect individual features of CPUs.][80749] \* Refer to Rust's [platform support page][platform-support-doc] for more information on Rust's tiered platform support. Libraries --------- - [`Box::downcast` is now also implemented for any `dyn Any + Send + Sync` object.][80945] - [`str` now implements `AsMut<str>`.][80279] - [`u64` and `u128` now implement `From<char>`.][79502] - [`Error` is now implemented for `&T` where `T` implements `Error`.][75180] - [`Poll::{map_ok, map_err}` are now implemented for `Poll<Option<Result<T,E>>>`.][80968] - [`unsigned_abs` is now implemented for all signed integer types.][80959] - [`io::Empty` now implements `io::Seek`.][78044] - [`rc::Weak<T>` and `sync::Weak<T>`'s methods such as `as_ptr` are now implemented for `T: ?Sized` types.][80764] - [`Div` and `Rem` by their `NonZero` variant is now implemented for all unsigned integers.][79134] Stabilized APIs --------------- - [`Arc::decrement_strong_count`] - [`Arc::increment_strong_count`] - [`Once::call_once_force`] - [`Peekable::next_if_eq`] - [`Peekable::next_if`] - [`Seek::stream_position`] - [`array::IntoIter`] - [`panic::panic_any`] - [`ptr::addr_of!`] - [`ptr::addr_of_mut!`] - [`slice::fill_with`] - [`slice::split_inclusive_mut`] - [`slice::split_inclusive`] - [`slice::strip_prefix`] - [`slice::strip_suffix`] - [`str::split_inclusive`] - [`sync::OnceState`] - [`task::Wake`] - [`VecDeque::range`] - [`VecDeque::range_mut`] Cargo ----- - [Added the `split-debuginfo` profile option to control the -Csplit-debuginfo codegen option.][cargo/9112] - [Added the `resolver` field to `Cargo.toml` to enable the new feature resolver and CLI option behavior.][cargo/8997] Version 2 of the feature resolver will try to avoid unifying features of dependencies where that unification could be unwanted. Such as using the same dependency with a `std` feature in a build scripts and proc-macros, while using the `no-std` feature in the final binary. See the [Cargo book documentation][[email protected]] for more information on the feature. Rustdoc ------- - [Rustdoc will now include documentation for methods available from _nested_ `Deref` traits.][80653] - [You can now provide a `--default-theme` flag which sets the default theme to use for documentation.][79642] Various improvements to intra-doc links: - [You can link to non-path primitives such as `slice`.][80181] - [You can link to associated items.][74489] - [You can now include generic parameters when linking to items, like `Vec<T>`.][76934] Misc ---- - [You can now pass `--include-ignored` to tests (e.g. with `cargo test -- --include-ignored`) to include testing tests marked `#[ignore]`.][80053] Compatibility Notes ------------------- - [WASI platforms no longer use the `wasm-bindgen` ABI, and instead use the wasm32 ABI.][79998] - [`rustc` no longer promotes division, modulo and indexing operations to `const` that could fail.][80579] - [The minimum version of glibc for the following platforms has been bumped to version 2.31 for the distributed artifacts.][81521] - `armv5te-unknown-linux-gnueabi` - `sparc64-unknown-linux-gnu` - `thumbv7neon-unknown-linux-gnueabihf` - `armv7-unknown-linux-gnueabi` - `x86_64-unknown-linux-gnux32` - [`atomic::spin_loop_hint` has been deprecated.][80966] It's recommended to use `hint::spin_loop` instead. Internal Only ------------- - [Consistently avoid constructing optimized MIR when not doing codegen][80718] [79135]: rust-lang/rust#79135 [74489]: rust-lang/rust#74489 [76934]: rust-lang/rust#76934 [79570]: rust-lang/rust#79570 [80181]: rust-lang/rust#80181 [79642]: rust-lang/rust#79642 [80945]: rust-lang/rust#80945 [80279]: rust-lang/rust#80279 [80053]: rust-lang/rust#80053 [79502]: rust-lang/rust#79502 [75180]: rust-lang/rust#75180 [79135]: rust-lang/rust#79135 [81521]: rust-lang/rust#81521 [80968]: rust-lang/rust#80968 [80959]: rust-lang/rust#80959 [80718]: rust-lang/rust#80718 [80653]: rust-lang/rust#80653 [80579]: rust-lang/rust#80579 [79998]: rust-lang/rust#79998 [78044]: rust-lang/rust#78044 [81455]: rust-lang/rust#81455 [80764]: rust-lang/rust#80764 [80749]: rust-lang/rust#80749 [80662]: rust-lang/rust#80662 [79134]: rust-lang/rust#79134 [80966]: rust-lang/rust#80966 [cargo/8997]: rust-lang/cargo#8997 [cargo/9112]: rust-lang/cargo#9112 [[email protected]]: https://doc.rust-lang.org/nightly/cargo/reference/features.html#feature-resolver-version-2 [`Once::call_once_force`]: https://doc.rust-lang.org/stable/std/sync/struct.Once.html#method.call_once_force [`sync::OnceState`]: https://doc.rust-lang.org/stable/std/sync/struct.OnceState.html [`panic::panic_any`]: https://doc.rust-lang.org/stable/std/panic/fn.panic_any.html [`slice::strip_prefix`]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.strip_prefix [`slice::strip_suffix`]: https://doc.rust-lang.org/stable/std/primitive.slice.html#method.strip_prefix [`Arc::increment_strong_count`]: https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.increment_strong_count [`Arc::decrement_strong_count`]: https://doc.rust-lang.org/nightly/std/sync/struct.Arc.html#method.decrement_strong_count [`slice::fill_with`]: https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.fill_with [`ptr::addr_of!`]: https://doc.rust-lang.org/nightly/std/ptr/macro.addr_of.html [`ptr::addr_of_mut!`]: https://doc.rust-lang.org/nightly/std/ptr/macro.addr_of_mut.html [`array::IntoIter`]: https://doc.rust-lang.org/nightly/std/array/struct.IntoIter.html [`slice::split_inclusive`]: https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_inclusive [`slice::split_inclusive_mut`]: https://doc.rust-lang.org/nightly/std/primitive.slice.html#method.split_inclusive_mut [`str::split_inclusive`]: https://doc.rust-lang.org/nightly/std/primitive.str.html#method.split_inclusive [`task::Wake`]: https://doc.rust-lang.org/nightly/std/task/trait.Wake.html [`Seek::stream_position`]: https://doc.rust-lang.org/nightly/std/io/trait.Seek.html#method.stream_position [`Peekable::next_if`]: https://doc.rust-lang.org/nightly/std/iter/struct.Peekable.html#method.next_if [`Peekable::next_if_eq`]: https://doc.rust-lang.org/nightly/std/iter/struct.Peekable.html#method.next_if_eq [`VecDeque::range`]: https://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.range [`VecDeque::range_mut`]: https://doc.rust-lang.org/nightly/std/collections/struct.VecDeque.html#method.range_mut

rust-highfive assigned estebank Dec 13, 2020

rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Dec 13, 2020

devsnek force-pushed the wasm32-bindgen-compat branch from 452882f to 999c408 Compare December 13, 2020 05:35

nagisa added the T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. label Dec 13, 2020

devsnek mentioned this pull request Dec 14, 2020

Attempt to correct wasm32 ABI in bindgen rust-lang/rust-bindgen#1944

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rust-highfive assigned alexcrichton and unassigned estebank Dec 14, 2020

TheBlueMatt reviewed Jan 9, 2021

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TheBlueMatt mentioned this pull request Jan 9, 2021

WebAssembly ABI mismatch between clang and rust #71871

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devsnek added 3 commits January 11, 2021 14:22

Use correct ABI for wasm32 by default

94bf59e

Introduces `RUSTC_USE_WASM32_BINDGEN_COMPAT_ABI` env var to use the compat ABI if need.

new target

8f64cec

squash! fix wasi

5ba3be1

devsnek force-pushed the wasm32-bindgen-compat branch from d839a69 to 5ba3be1 Compare January 11, 2021 21:32

rustbot added this to the 1.51.0 milestone Jan 12, 2021

devsnek deleted the wasm32-bindgen-compat branch January 12, 2021 03:17

TheBlueMatt mentioned this pull request Jan 12, 2021

Status of rust+C bindings for wasm targets rustwasm/team#291

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Mark-Simulacrum added the relnotes Marks issues that should be documented in the release notes of the next release. label Jan 12, 2021

TheBlueMatt mentioned this pull request Jan 12, 2021

Support for wasm32-wasi target? rustwasm/wasm-pack#654

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alexcrichton mentioned this pull request Mar 1, 2021

Can't work with wasm32-wasi target from rustc-2021-01-13 rustwasm/wasm-bindgen#2471

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luizirber mentioned this pull request Mar 25, 2021

Try out wasm32-unknown-emscripten to see if it works with the mixed C(++)/Rust codebase luizirber/bitmagic-rs#5

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alexcrichton mentioned this pull request Apr 5, 2021

New ABI: "wasm" rust-lang/lang-team#90

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juntao mentioned this pull request Jun 28, 2021

Workaround for wasm-bindgen WasmEdge/WasmEdge#264

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devsnek commented Jan 11, 2021

alexcrichton commented Jan 11, 2021

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devsnek commented Dec 13, 2020 •

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nagisa commented Dec 13, 2020 •

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devsnek commented Dec 14, 2020 •

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nagisa commented Dec 14, 2020 •

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