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Rollup merge of #102144 - chriss0612:const_convert_control_flow, r=scottmcm

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Extend const_convert with const {FormResidual, Try} for ControlFlow.

Very small change so I just used the existing `const_convert` feature flag.  #88674
Newly const API:
```
impl<B, C> const ops::Try for ControlFlow<B, C>;
impl<B, C> const ops::FromResidual for ControlFlow<B, C>;
```

`@usbalbin` I hope it is ok that I added to your feature.
This commit is contained in:
Matthias Krüger 2022-09-22 21:34:55 +02:00 committed by GitHub
commit 23370637ef
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1 changed files with 4 additions and 2 deletions
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6
library/core/src/ops/control_flow.rs
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@ -95,7 +95,8 @@ pub enum ControlFlow<B, C = ()> {
}
#[unstable(feature = "try_trait_v2", issue = "84277")]
impl<B, C> ops::Try for ControlFlow<B, C> {
#[rustc_const_unstable(feature = "const_convert", issue = "88674")]
impl<B, C> const ops::Try for ControlFlow<B, C> {
type Output = C;
type Residual = ControlFlow<B, convert::Infallible>;
@ -114,7 +115,8 @@ impl<B, C> ops::Try for ControlFlow<B, C> {
}
#[unstable(feature = "try_trait_v2", issue = "84277")]
impl<B, C> ops::FromResidual for ControlFlow<B, C> {
#[rustc_const_unstable(feature = "const_convert", issue = "88674")]
impl<B, C> const ops::FromResidual for ControlFlow<B, C> {
#[inline]
fn from_residual(residual: ControlFlow<B, convert::Infallible>) -> Self {
match residual {