wasm-bindgen
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rustwasm
Library doesn't compile with `default-features=false`
Describe the Bug
Library doesn't compile without default features.
Steps to Reproduce
Either add wasm-bindgen as dependency to a project:
wasm-bindgen = { version = "0.2", default-features = false }
Or git clone the repo and then do
cargo check --no-default-features
Expected Behavior
Crate is expected to compile with any set of chosen features, including when all features are off.
Actual Behavior
It fails to compile because the code uses std when std feature is disabled.
Compilation error message
error[E0432]: unresolved imports `crate::convert::VectorFromWasmAbi`, `crate::convert::VectorIntoWasmAbi`
--> src/convert/slices.rs:13:22
|
13 | use crate::convert::{VectorFromWasmAbi, VectorIntoWasmAbi};
| ^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^ no `VectorIntoWasmAbi` in `convert`
| |
| no `VectorFromWasmAbi` in `convert`
|
help: a similar name exists in the module
|
13 | use crate::convert::{RefFromWasmAbi, VectorIntoWasmAbi};
| ~~~~~~~~~~~~~~
help: a similar name exists in the module
|
13 | use crate::convert::{VectorFromWasmAbi, OptionIntoWasmAbi};
| ~~~~~~~~~~~~~~~~~
error[E0433]: failed to resolve: use of undeclared crate or module `std`
--> src/lib.rs:1349:23
|
1349 | let msg = std::format!(
| ^^^ use of undeclared crate or module `std`
error[E0433]: failed to resolve: use of undeclared crate or module `std`
--> src/lib.rs:1818:35
|
1818 | crate::throw_str(&std::format!("{:?}", e));
| ^^^ use of undeclared crate or module `std`
error[E0433]: failed to resolve: use of undeclared crate or module `std`
--> src/lib.rs:1705:5
|
1705 | std::thread_local! {
| ^^^ use of undeclared crate or module `std`
error[E0433]: failed to resolve: could not find `externref` in the crate root
--> src/lib.rs:1702:16
|
1702 | crate::externref::link_intrinsics();
| ^^^^^^^^^ could not find `externref` in the crate root
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:190:27
|
190 | type Anchor = Box<[$t]>;
| ^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:193:54
|
193 | unsafe fn ref_from_abi(js: WasmSlice) -> Box<[$t]> {
| ^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:194:18
|
194 | <Box<[$t]>>::from_abi(js)
| ^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `WasmMutSlice` in this scope
--> src/convert/slices.rs:199:24
|
199 | type Abi = WasmMutSlice;
| ^^^^^^^^^^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `MutSlice` in this scope
--> src/convert/slices.rs:200:27
|
200 | type Anchor = MutSlice<$t>;
| ^^^^^^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `WasmMutSlice` in this scope
--> src/convert/slices.rs:203:44
|
203 | unsafe fn ref_mut_from_abi(js: WasmMutSlice) -> MutSlice<$t> {
| ^^^^^^^^^^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `MutSlice` in this scope
--> src/convert/slices.rs:203:61
|
203 | unsafe fn ref_mut_from_abi(js: WasmMutSlice) -> MutSlice<$t> {
| ^^^^^^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:204:33
|
204 | let contents = <Box<[$t]>>::from_abi(js.slice);
| ^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0433]: failed to resolve: use of undeclared type `JsValue`
--> src/convert/slices.rs:205:26
|
205 | let js = JsValue::from_abi(js.idx);
| ^^^^^^^ use of undeclared type `JsValue`
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
help: consider importing this struct
|
4 + use crate::JsValue;
|
error[E0422]: cannot find struct, variant or union type `MutSlice` in this scope
--> src/convert/slices.rs:206:17
|
206 | MutSlice { contents, js }
| ^^^^^^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:212:27
|
212 | type Anchor = Box<[$t]>;
| ^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:215:59
|
215 | unsafe fn long_ref_from_abi(js: WasmSlice) -> Box<[$t]> {
| ^^^ not found in this scope
...
222 | / vectors! {
223 | | u8 i8 u16 i16 u32 i32 u64 i64 usize isize f32 f64
224 | | }
| |_- in this macro invocation
|
= note: this error originates in the macro `vectors` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:355:19
|
355 | type Anchor = Box<str>;
| ^^^ not found in this scope
error[E0433]: failed to resolve: use of undeclared crate or module `mem`
--> src/convert/slices.rs:359:9
|
359 | mem::transmute::<Box<[u8]>, Box<str>>(<Box<[u8]>>::from_abi(js))
| ^^^ use of undeclared crate or module `mem`
|
help: consider importing one of these items
|
4 + use core::mem;
|
4 + use crate::mem;
|
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:359:26
|
359 | mem::transmute::<Box<[u8]>, Box<str>>(<Box<[u8]>>::from_abi(js))
| ^^^ not found in this scope
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:359:37
|
359 | mem::transmute::<Box<[u8]>, Box<str>>(<Box<[u8]>>::from_abi(js))
| ^^^ not found in this scope
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:359:48
|
359 | mem::transmute::<Box<[u8]>, Box<str>>(<Box<[u8]>>::from_abi(js))
| ^^^ not found in this scope
error[E0412]: cannot find type `Box` in this scope
--> src/convert/slices.rs:365:19
|
365 | type Anchor = Box<str>;
| ^^^ not found in this scope
error[E0425]: cannot find value `GLOBAL_EXNDATA` in this scope
--> src/lib.rs:1711:9
|
1711 | GLOBAL_EXNDATA.with(|data| {
| ^^^^^^^^^^^^^^ not found in this scope
error[E0425]: cannot find value `GLOBAL_EXNDATA` in this scope
--> src/lib.rs:1718:9
|
1718 | GLOBAL_EXNDATA.with(|data| {
| ^^^^^^^^^^^^^^ not found in this scope
error[E0433]: failed to resolve: use of undeclared crate or module `std`
--> src/lib.rs:1814:13
|
1814 | impl<E: std::fmt::Debug> Main for &mut MainWrapper<Result<(), E>> {
| ^^^ use of undeclared crate or module `std`
|
help: consider importing one of these items
|
1430 + use core::fmt;
|
1430 + use crate::fmt;
|
help: if you import `fmt`, refer to it directly
|
1814 - impl<E: std::fmt::Debug> Main for &mut MainWrapper<Result<(), E>> {
1814 + impl<E: fmt::Debug> Main for &mut MainWrapper<Result<(), E>> {
|
Yeah, wasm-bindgen's no_std support has been broken for a while: see https://github.com/rustwasm/wasm-bindgen/issues/2689#issuecomment-933526660.
