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feature-gate c-variadic definitions and calls in const contexts

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Folkert de Vries 2026-01-28 21:03:41 +01:00
parent f5bf3353e6
commit 981dacc34f
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11 changed files with 88 additions and 5 deletions
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6
library/core/src/ffi/va_list.rs
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@ -205,7 +205,7 @@ impl VaList<'_> {
}
}
#[rustc_const_unstable(feature = "c_variadic_const", issue = "none")]
#[rustc_const_unstable(feature = "const_c_variadic", issue = "151787")]
impl<'f> const Clone for VaList<'f> {
#[inline]
fn clone(&self) -> Self {
@ -217,7 +217,7 @@ impl<'f> const Clone for VaList<'f> {
}
}
#[rustc_const_unstable(feature = "c_variadic_const", issue = "none")]
#[rustc_const_unstable(feature = "const_c_variadic", issue = "151787")]
impl<'f> const Drop for VaList<'f> {
fn drop(&mut self) {
// SAFETY: this variable argument list is being dropped, so won't be read from again.
@ -293,7 +293,7 @@ impl<'f> VaList<'f> {
///
/// [valid]: https://doc.rust-lang.org/nightly/nomicon/what-unsafe-does.html
#[inline]
#[rustc_const_unstable(feature = "c_variadic_const", issue = "none")]
#[rustc_const_unstable(feature = "const_c_variadic", issue = "151787")]
pub const unsafe fn arg<T: VaArgSafe>(&mut self) -> T {
// SAFETY: the caller must uphold the safety contract for `va_arg`.
unsafe { va_arg(self) }