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Remove some Serialize trait bounds #2333

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merged 1 commit into from Dec 3, 2022
Merged

Remove some Serialize trait bounds #2333

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1 change: 1 addition & 0 deletions serde/build.rs
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Expand Up @@ -89,6 +89,7 @@ fn main() {
println!("cargo:rustc-cfg=no_core_try_from");
println!("cargo:rustc-cfg=no_num_nonzero_signed");
println!("cargo:rustc-cfg=no_systemtime_checked_add");
println!("cargo:rustc-cfg=no_relaxed_trait_bounds");
}

// Whitelist of archs that support std::sync::atomic module. Ideally we
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20 changes: 19 additions & 1 deletion serde/src/ser/impls.rs
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Expand Up @@ -182,7 +182,25 @@ where
}
}

#[cfg(any(feature = "std", feature = "alloc"))]
#[cfg(all(any(feature = "std", feature = "alloc"), not(no_relaxed_trait_bounds)))]
macro_rules! seq_impl {
($ty:ident < T $(: $tbound1:ident $(+ $tbound2:ident)*)* $(, $typaram:ident : $bound:ident)* >) => {
impl<T $(, $typaram)*> Serialize for $ty<T $(, $typaram)*>
where
T: Serialize,
{
#[inline]
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
serializer.collect_seq(self)
}
}
}
}

#[cfg(all(any(feature = "std", feature = "alloc"), no_relaxed_trait_bounds))]
macro_rules! seq_impl {
($ty:ident < T $(: $tbound1:ident $(+ $tbound2:ident)*)* $(, $typaram:ident : $bound:ident)* >) => {
impl<T $(, $typaram)*> Serialize for $ty<T $(, $typaram)*>
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