Rollup merge of #96757 - jyn514:fewer-clippy-rebuilds, r=Mark-Simulacrum

[rust.git] / library / alloc / src / raw_vec.rs

diff --git a/library/alloc/src/raw_vec.rs b/library/alloc/src/raw_vec.rs
index 0ce2beb63d681ec3965d8dd76f1cd95777a4acb1..9dbac3c36ffb2871ce5e93f30dc3aef1fa94b9c3 100644 (file)
--- a/library/alloc/src/raw_vec.rs
+++ b/library/alloc/src/raw_vec.rs
@@ -168,7 +168,8 @@ pub unsafe fn into_box(self, len: usize) -> Box<[MaybeUninit<T>], A> {
 
     #[cfg(not(no_global_oom_handling))]
     fn allocate_in(capacity: usize, init: AllocInit, alloc: A) -> Self {
-        if mem::size_of::<T>() == 0 {
+        // Don't allocate here because `Drop` will not deallocate when `capacity` is 0.
+        if mem::size_of::<T>() == 0 || capacity == 0 {
             Self::new_in(alloc)
         } else {
             // We avoid `unwrap_or_else` here because it bloats the amount of