diff options
| -rw-r--r-- | compiler/rustc_session/src/config.rs | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/compiler/rustc_session/src/config.rs b/compiler/rustc_session/src/config.rs index fef4dfba6d2..854e2b77993 100644 --- a/compiler/rustc_session/src/config.rs +++ b/compiler/rustc_session/src/config.rs @@ -9,7 +9,7 @@ use crate::utils::{CanonicalizedPath, NativeLib, NativeLibKind}; use crate::{lint, HashStableContext}; use crate::{EarlyErrorHandler, Session}; -use rustc_data_structures::fx::{FxHashMap, FxHashSet}; +use rustc_data_structures::fx::{FxHashMap, FxHashSet, FxIndexSet}; use rustc_data_structures::stable_hasher::{StableOrd, ToStableHashKey}; use rustc_target::abi::Align; use rustc_target::spec::LinkSelfContainedComponents; @@ -1361,7 +1361,10 @@ fn default_configuration(sess: &Session) -> Cfg<Symbol> { /// crate, used to drive conditional compilation. `T` is always `String` or /// `Symbol`. Strings are used temporarily very early on. Once the the main /// symbol interner is running, they are converted to symbols. -pub type Cfg<T> = FxHashSet<(T, Option<T>)>; +/// +/// An `FxIndexSet` is used to ensure deterministic ordering of error messages +/// relating to `--cfg`. +pub type Cfg<T> = FxIndexSet<(T, Option<T>)>; /// The parsed `--check-cfg` options. The `<T>` structure is similar to `Cfg`. pub struct CheckCfg<T> { |