diff --git a/libstdc++-v3/include/bits/alloc_traits.h b/libstdc++-v3/include/bits/alloc_traits.h
index 2c69e5a2b35..34412583064 100644
--- a/libstdc++-v3/include/bits/alloc_traits.h
+++ b/libstdc++-v3/include/bits/alloc_traits.h
@@ -341,7 +341,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
{ __a.deallocate(__p, __n); }
/**
- * @brief Construct an object of type @a _Tp
+ * @brief Construct an object of type `_Tp`
* @param __a An allocator.
* @param __p Pointer to memory of suitable size and alignment for Tp
* @param __args Constructor arguments.
diff --git a/libstdc++-v3/include/bits/basic_string.h b/libstdc++-v3/include/bits/basic_string.h
index bfc97644bd0..7d819bb1bb7 100644
--- a/libstdc++-v3/include/bits/basic_string.h
+++ b/libstdc++-v3/include/bits/basic_string.h
@@ -4707,9 +4707,9 @@ _GLIBCXX_END_NAMESPACE_CXX11
/**
* @brief Insert a string_view.
- * @param __pos Position in string to insert at.
- * @param __svt The object convertible to string_view to insert from.
- * @param __pos Position in string_view to insert
+ * @param __pos1 Position in string to insert at.
+ * @param __svt The object convertible to string_view to insert from.
+ * @param __pos2 Position in string_view to insert
* from.
* @param __n The number of characters to insert.
* @return Reference to this string.
diff --git a/libstdc++-v3/include/bits/max_size_type.h b/libstdc++-v3/include/bits/max_size_type.h
index 27d63797c49..153b1bff5f4 100644
--- a/libstdc++-v3/include/bits/max_size_type.h
+++ b/libstdc++-v3/include/bits/max_size_type.h
@@ -22,7 +22,7 @@
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
// .
-/** @file bits/max_size_type.h.
+/** @file bits/max_size_type.h
* This is an internal header file, included by other library headers.
* Do not attempt to use it directly. @headername{iterator}
*/
diff --git a/libstdc++-v3/include/bits/regex.h b/libstdc++-v3/include/bits/regex.h
index 4d331c82e74..ac10fa184c6 100644
--- a/libstdc++-v3/include/bits/regex.h
+++ b/libstdc++-v3/include/bits/regex.h
@@ -916,9 +916,9 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
*
* @param __s Another matched sequence to compare to this one.
*
- * @retval <0 this matched sequence will collate before @p __s.
- * @retval =0 this matched sequence is equivalent to @p __s.
- * @retval <0 this matched sequence will collate after @p __s.
+ * @retval negative This matched sequence will collate before `__s`.
+ * @retval zero This matched sequence is equivalent to `__s`.
+ * @retval positive This matched sequence will collate after `__s`.
*/
int
compare(const sub_match& __s) const
@@ -926,13 +926,13 @@ _GLIBCXX_BEGIN_NAMESPACE_CXX11
/**
* @{
- * @brief Compares this sub_match to a string.
+ * @brief Compares this `sub_match` to a string.
*
- * @param __s A string to compare to this sub_match.
+ * @param __s A string to compare to this `sub_match`.
*
- * @retval <0 this matched sequence will collate before @p __s.
- * @retval =0 this matched sequence is equivalent to @p __s.
- * @retval <0 this matched sequence will collate after @p __s.
+ * @retval negative This matched sequence will collate before `__s`.
+ * @retval zero This matched sequence is equivalent to `__s`.
+ * @retval positive This matched sequence will collate after `__s`.
*/
int
compare(const string_type& __s) const
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp b/libstdc++-v3/include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp
index c2f69f9228d..e3dac058f5f 100644
--- a/libstdc++-v3/include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/detail/priority_queue_base_dispatch.hpp
@@ -63,6 +63,12 @@ namespace __gnu_pbds
{
namespace detail
{
+ /**
+ * @ingroup pbds
+ *
+ * @{
+ */
+
/// Specialization for pairing_heap.
template
struct container_base_dispatch<_VTp, Cmp_Fn, _Alloc, pairing_heap_tag,
diff --git a/libstdc++-v3/include/ext/pb_ds/priority_queue.hpp b/libstdc++-v3/include/ext/pb_ds/priority_queue.hpp
index 8ff1784cad2..bbd375d5d5e 100644
--- a/libstdc++-v3/include/ext/pb_ds/priority_queue.hpp
+++ b/libstdc++-v3/include/ext/pb_ds/priority_queue.hpp
@@ -51,6 +51,7 @@ namespace __gnu_pbds
/**
* @defgroup heap-based Heap-Based
* @ingroup containers-pbds
+ *
* @{
*/
@@ -151,6 +152,6 @@ namespace __gnu_pbds
swap(priority_queue& other)
{ base_type::swap(other); }
};
-} // namespace __gnu_pbds
///@} heap-based
+} // namespace __gnu_pbds
#endif