GCC library updates

features_cpp23.yaml

@@ -952,12 +952,15 @@ features:
     paper: P2165
     lib: true
     support:
-      - GCC 14
+      - GCC 14 (partial)
+      - GCC 16
       - Clang 2.9 (partial)
       - MSVC 19.36 (partial)
       - MSVC 19.37
       - Xcode (partial)
     hints:
+      - target: GCC 14
+        msg: "Some views incorrectly still return `std::pair` instead of `std::tuple`"
       - target: Clang 2.9
         msg: "Changes of `tuple`, `adjacent_view`, and `cartesian_product_view` are not yet implemented."
       - target: MSVC 19.36
@@ -1378,6 +1381,7 @@ features:
     paper: P2711
     lib: true
     support:
+      - GCC 16
       - Clang 17 (partial)
       - MSVC 19.36 (hint)
       - Xcode 15

features_cpp26.yaml

@@ -369,6 +369,7 @@ features:
     paper: P2988
     lib: true
     support:
+      - GCC 16
       - Clang 22
     ftm:
       - name: __cpp_lib_freestanding_optional
@@ -736,6 +737,8 @@ features:
   - desc: "Hashing support for `chrono` value classes"
     paper: P2592
     lib: true
+    support:
+      - GCC 16
     ftm:
       - name: __cpp_lib_chrono
         value: 202306L
@@ -871,6 +874,8 @@ features:
   - desc: "`std::function_ref`: type-erased callable reference"
     paper: P0792
     lib: true
+    support:
+      - GCC 16
     ftm:
       - name: __cpp_lib_function_ref
         value: 202306L
@@ -888,6 +893,7 @@ features:
     paper: P2714
     lib: true
     support:
+      - GCC 16
       - Clang 20 (partial)
     ftm:
       - name: __cpp_lib_bind_front
@@ -1242,6 +1248,7 @@ features:
       - P3235
     lib: true
     support:
+      - GCC 16
       - MSVC 19.43
     ftm:
       - name: __cpp_lib_print