diff options
| -rw-r--r-- | src/libstd/collections/hash/table.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/src/libstd/collections/hash/table.rs b/src/libstd/collections/hash/table.rs index 316c7595266..97cab94b67b 100644 --- a/src/libstd/collections/hash/table.rs +++ b/src/libstd/collections/hash/table.rs @@ -12,6 +12,7 @@ use alloc::heap::{allocate, deallocate, EMPTY}; use cmp; use hash::{Hash, Hasher, BuildHasher}; +use intrinsics::needs_drop; use marker; use mem::{align_of, size_of}; use mem; @@ -1009,7 +1010,9 @@ impl<K, V> Drop for RawTable<K, V> { // dropping empty tables such as on resize. // Also avoid double drop of elements that have been already moved out. unsafe { - for _ in self.rev_move_buckets() {} + if needs_drop::<(K, V)>() { // avoid linear runtime for types that don't need drop + for _ in self.rev_move_buckets() {} + } } let hashes_size = self.capacity * size_of::<u64>(); |