From 8584915d3e630efc502ca7e90094a2eb814fda2d Mon Sep 17 00:00:00 2001
From: Liss Heidrich <31625940+liss-h@users.noreply.github.com>
Date: Tue, 14 Jan 2025 15:45:35 +0100
Subject: [PATCH] fix

---
 include/dice/sparse-map/sparse_hash.hpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/include/dice/sparse-map/sparse_hash.hpp b/include/dice/sparse-map/sparse_hash.hpp
index 670e953..91c258e 100644
--- a/include/dice/sparse-map/sparse_hash.hpp
+++ b/include/dice/sparse-map/sparse_hash.hpp
@@ -762,10 +762,16 @@ class sparse_array {
   static void destroy_and_deallocate_values(
       allocator_type &alloc, pointer values, size_type nb_values,
       size_type capacity_values) noexcept {
+    if (capacity_values == 0) {
+      tsl_sh_assert(nb_values == 0);
+      // nothing to deallocate
+      // alloc.deallocate(nullptr, 0) is invalid
+      return;
+    }
+
     for (size_type i = 0; i < nb_values; i++) {
       destroy_value(alloc, values + i);
     }
-
     alloc.deallocate(values, capacity_values);
   }