kstd/vector: add missing constexpr

1 files changed, 4 insertions, 4 deletions

diff --git a/libs/kstd/include/kstd/vector b/libs/kstd/include/kstd/vector
index d66c63b..2d148e4 100644
--- a/libs/kstd/include/kstd/vector
+++ b/libs/kstd/include/kstd/vector
@@ -384,7 +384,7 @@ namespace kstd
     //! Get a reference to the first element of this vector.
     //!
     //! The behavior is undefined if this vector is empty.
-    [[nodiscard]] auto front() const -> const_reference
+    [[nodiscard]] constexpr auto front() const -> const_reference
     {
       return *begin();
     }
@@ -484,13 +484,13 @@ namespace kstd
     }
 
     //! Get a reverse iterator to the reverse end.
-    [[nodiscard]] auto rend() const noexcept -> const_reverse_iterator
+    [[nodiscard]] constexpr auto rend() const noexcept -> const_reverse_iterator
     {
       return const_reverse_iterator{begin()};
     }
 
     //! Get a reverse iterator to the reverse end.
-    [[nodiscard]] auto crend() const noexcept -> const_reverse_iterator
+    [[nodiscard]] constexpr auto crend() const noexcept -> const_reverse_iterator
     {
       return rend();
     }
@@ -597,7 +597,7 @@ namespace kstd
     //! Remove the last element of this vector.
     //!
     //! If this vector is empty, the behavior is undefined.
-    auto pop_back() -> void
+    constexpr auto pop_back() -> void
     {
       --m_size;
       std::allocator_traits<allocator_type>::destroy(m_allocator, data() + size());