Rollup merge of rust-lang#107525 - RalfJung:pointee-info, r=eddyb

GuillaumeGomez · web-flow · commit b1d62708f5b5 · 2023-01-31T20:27:17.000+01:00
PointeeInfo is advisory only rust-lang#107248 fixed PointeeInfo being used in ways that don't actually work. Hopefully this comments helps avoid such issues in the future. Cc `@eddyb`
diff --git a/compiler/rustc_abi/src/lib.rs b/compiler/rustc_abi/src/lib.rs
@@ -1456,6 +1456,8 @@ pub enum PointerKind {
     UniqueOwned,
 }
 
+/// Note that this information is advisory only, and backends are free to ignore it.
+/// It can only be used to encode potential optimizations, but no critical information.
 #[derive(Copy, Clone, Debug)]
 pub struct PointeeInfo {
     pub size: Size,

Original file line number	Diff line number	Diff line change
`@@ -1456,6 +1456,8 @@ pub enum PointerKind {`
`1456`	`1456`	`UniqueOwned,`
`1457`	`1457`	`}`
`1458`	`1458`
	`1459`	`+/// Note that this information is advisory only, and backends are free to ignore it.`
	`1460`	`+/// It can only be used to encode potential optimizations, but no critical information.`
`1459`	`1461`	`#[derive(Copy, Clone, Debug)]`
`1460`	`1462`	`pub struct PointeeInfo {`
`1461`	`1463`	`pub size: Size,`