Fix performance-noexcept-swap clang-tidy warning (#6931)

Author: SiarheiFedartsou

.clang-tidy

@@ -59,7 +59,6 @@ Checks: >
     modernize-use-using,
     performance-*,
     -performance-noexcept-move-constructor,
-    -performance-noexcept-swap,
     -performance-no-int-to-ptr,
     -performance-enum-size,
     -performance-avoid-endl,

CHANGELOG.md

@@ -24,6 +24,7 @@
     - NodeJS:
       - CHANGED: Use node-api instead of NAN. [#6452](https://github.com/Project-OSRM/osrm-backend/pull/6452)
     - Misc:
+      - FIXED: Fix performance-noexcept-swap clang-tidy warning. [#6931](https://github.com/Project-OSRM/osrm-backend/pull/6931)
       - CHANGED: Use custom struct instead of std::pair in QueryHeap. [#6921](https://github.com/Project-OSRM/osrm-backend/pull/6921)
       - CHANGED: Use std::string_view::starts_with instead of boost::starts_with. [#6918](https://github.com/Project-OSRM/osrm-backend/pull/6918)
       - CHANGED: Get rid of boost::math::constants::* and M_PI in favor of std::numbers. [#6916](https://github.com/Project-OSRM/osrm-backend/pull/6916)

include/util/deallocating_vector.hpp

@@ -166,7 +166,7 @@ class DeallocatingVectorIterator
 
 template <typename ElementT> class DeallocatingVector;
 
-template <typename T> void swap(DeallocatingVector<T> &lhs, DeallocatingVector<T> &rhs);
+template <typename T> void swap(DeallocatingVector<T> &lhs, DeallocatingVector<T> &rhs) noexcept;
 
 template <typename ElementT> class DeallocatingVector
 {
@@ -221,9 +221,10 @@ template <typename ElementT> class DeallocatingVector
 
     ~DeallocatingVector() { clear(); }
 
-    friend void swap<>(DeallocatingVector<ElementT> &lhs, DeallocatingVector<ElementT> &rhs);
+    friend void swap<>(DeallocatingVector<ElementT> &lhs,
+                       DeallocatingVector<ElementT> &rhs) noexcept;
 
-    void swap(DeallocatingVector<ElementT> &other)
+    void swap(DeallocatingVector<ElementT> &other) noexcept
     {
         std::swap(current_size, other.current_size);
         bucket_list.swap(other.bucket_list);
@@ -342,7 +343,7 @@ template <typename ElementT> class DeallocatingVector
     }
 };
 
-template <typename T> void swap(DeallocatingVector<T> &lhs, DeallocatingVector<T> &rhs)
+template <typename T> void swap(DeallocatingVector<T> &lhs, DeallocatingVector<T> &rhs) noexcept
 {
     lhs.swap(rhs);
 }

include/util/permutation.hpp

@@ -10,9 +10,9 @@ namespace osrm::util
 
 namespace permutation_detail
 {
-template <typename T> static inline void swap(T &a, T &b) { std::swap(a, b); }
+template <typename T> static inline void swap(T &a, T &b) noexcept { std::swap(a, b); }
 
-static inline void swap(std::vector<bool>::reference a, std::vector<bool>::reference b)
+static inline void swap(std::vector<bool>::reference a, std::vector<bool>::reference b) noexcept
 {
     std::vector<bool>::swap(a, b);
 }