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| author | Ralf Jung <post@ralfj.de> | 2023-11-30 17:01:28 +0100 |
|---|---|---|
| committer | Ralf Jung <post@ralfj.de> | 2023-11-30 17:01:28 +0100 |
| commit | a1b03e30675fcf1fadd9979f6c10a10182c7660e (patch) | |
| tree | 3cdc510c553b6b95868f5b8f23bdf45990f518ee /compiler/rustc_const_eval/src/interpret | |
| parent | df0295f07175acc7325ce3ca4152eb05752af1f2 (diff) | |
| download | rust-a1b03e30675fcf1fadd9979f6c10a10182c7660e.tar.gz rust-a1b03e30675fcf1fadd9979f6c10a10182c7660e.zip | |
explain a good reason for why LocalValue does not store the type of the local
Diffstat (limited to 'compiler/rustc_const_eval/src/interpret')
| -rw-r--r-- | compiler/rustc_const_eval/src/interpret/eval_context.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_const_eval/src/interpret/eval_context.rs b/compiler/rustc_const_eval/src/interpret/eval_context.rs index 3bdfc1db913..32220b2aa76 100644 --- a/compiler/rustc_const_eval/src/interpret/eval_context.rs +++ b/compiler/rustc_const_eval/src/interpret/eval_context.rs @@ -173,6 +173,9 @@ impl<Prov: Provenance> std::fmt::Debug for LocalState<'_, Prov> { } /// Current value of a local variable +/// +/// This does not store the type of the local; the type is given by `body.local_decls` and can never +/// change, so by not storing here we avoid having to maintain that as an invariant. #[derive(Copy, Clone, Debug)] // Miri debug-prints these pub(super) enum LocalValue<Prov: Provenance = AllocId> { /// This local is not currently alive, and cannot be used at all. |