pezkuwichain d99c876120 fix: add explicit prelude imports for wasm32v1-none no_std + alloc ...

When building serde_core for wasm32v1-none target with no_std but with
the alloc feature enabled, the Rust compiler doesn't automatically inject
the prelude. This causes ?Sized bounds to fail with "bound modifier ?
can only be applied to Sized" errors.

This commit adds explicit prelude imports to all modules that:
1. Use `use crate::lib::*;` for serde's internal lib facade
2. Use `?Sized` bounds in their code

The fix adds:
```rust
#[allow(unused_imports)]
#[cfg(not(feature = "std"))]
use ::core::prelude::rust_2021::*;
```

This ensures Sized, Clone, Copy, and other prelude traits are in scope
for the ?Sized syntax to work correctly on wasm32v1-none targets.

Affected files:
- serde_core/src/de/impls.rs
- serde_core/src/de/mod.rs
- serde_core/src/private/doc.rs
- serde_core/src/ser/fmt.rs
- serde_core/src/ser/impls.rs
- serde_core/src/ser/impossible.rs
- serde_core/src/ser/mod.rs

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

2026-01-09 13:21:34 +03:00

..

fmt.rs

fix: add explicit prelude imports for wasm32v1-none no_std + alloc

2026-01-09 13:21:34 +03:00

impls.rs

fix: add explicit prelude imports for wasm32v1-none no_std + alloc

2026-01-09 13:21:34 +03:00

impossible.rs

fix: add explicit prelude imports for wasm32v1-none no_std + alloc

2026-01-09 13:21:34 +03:00

mod.rs

fix: add explicit prelude imports for wasm32v1-none no_std + alloc

2026-01-09 13:21:34 +03:00