Use rustversion to add compatibility with older rustc versions

ogxd · May 27, 2024 · d8aed65 · d8aed65
1 parent 0428f43
commit d8aed65
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Showing 2 changed files with 9 additions and 2 deletions.
diff --git a/Cargo.toml b/Cargo.toml
@@ -22,7 +22,7 @@ bench-plot = []
 hybrid = []
 
 [dependencies]
-# No dependencies!
+rustversion = "1.0" # Compile-time cfg based on rustc version for compatibility
 
 [dev-dependencies]
 rand = "0.8"

diff --git a/src/hasher.rs b/src/hasher.rs
@@ -132,10 +132,17 @@ impl Hasher for GxHasher {
 #[derive(Clone, Debug)]
 pub struct GxBuildHasher(State);
 
+#[rustversion::before(1.76)]
+use std::collections::hash_map::RandomState;
+
+#[rustversion::since(1.76)]
+use std::hash::RandomState;
+
 impl Default for GxBuildHasher {
     #[inline]
     fn default() -> GxBuildHasher {
-        let random_state = std::hash::RandomState::new();
+
+        let random_state = RandomState::new();
         unsafe {
             let state: State = std::mem::transmute(random_state);
             GxBuildHasher(state)