fix comment on PlaceMention semantics

2024-08-21 15:52:06 +02:00 · 2024-08-21 15:52:06 +02:00 · 9010708d9f
commit 9010708d9f
parent 59a74db37d
1 changed files with 1 additions and 1 deletions
--- a/compiler/rustc_middle/src/mir/syntax.rs
+++ b/compiler/rustc_middle/src/mir/syntax.rs
@ -395,7 +395,7 @@ pub enum StatementKind<'tcx> {
    /// `PlaceMention(PLACE)`.
    ///
    /// When executed at runtime, this computes the given place, but then discards
-    /// it without doing a load. It is UB if the place is not pointing to live memory.
+    /// it without doing a load. `let _ = *ptr;` is fine even if the pointer is dangling.
    PlaceMention(Box<Place<'tcx>>),

    /// Encodes a user's type ascription. These need to be preserved