Update ci.yml

.github/workflows/ci.yml

@@ -84,7 +84,7 @@ jobs:
           - toolset: gcc-15
             cxxstd: "11,14,17,20,23,2c"
             os: ubuntu-latest
-            container: ubuntu:25.04
+            container: ubuntu:25.10
             install: g++-15-multilib
             address-model: 32,64
           - toolset: clang
@@ -192,18 +192,24 @@ jobs:
           - toolset: clang
             compiler: clang++-20
             cxxstd: "11,14,17,20,23,2c"
-            container: ubuntu:25.04
+            container: ubuntu:24.04
             os: ubuntu-latest
             install: clang-20
           - toolset: clang
-            cxxstd: "11,14,17,20,2b"
-            os: macos-13
+            compiler: clang++-21
+            cxxstd: "11,14,17,20,23,2c"
+            container: ubuntu:25.10
+            os: ubuntu-latest
+            install: clang-21
           - toolset: clang
             cxxstd: "11,14,17,20,2b"
             os: macos-14
           - toolset: clang
             cxxstd: "11,14,17,20,2b"
             os: macos-15
+          - toolset: clang
+            cxxstd: "11,14,17,20,23,2c"
+            os: macos-26
 
     runs-on: ${{matrix.os}}
 
@@ -283,7 +289,7 @@ jobs:
           - toolset: clang-win
             cxxstd: "14,17,20,latest"
             addrmd: 32,64
-            os: windows-2022
+            os: windows-2025
           - toolset: gcc
             cxxstd: "11,14,17,2a"
             addrmd: 64
@@ -327,11 +333,8 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-22.04
-          - os: ubuntu-24.04
-          - os: macos-13
-          - os: macos-14
-          - os: macos-15
+          - os: ubuntu-latest
+          - os: macos-latest
 
     runs-on: ${{matrix.os}}
 
@@ -375,11 +378,8 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-22.04
-          - os: ubuntu-24.04
-          - os: macos-13
-          - os: macos-14
-          - os: macos-15
+          - os: ubuntu-latest
+          - os: macos-latest
 
     runs-on: ${{matrix.os}}
 
@@ -433,11 +433,8 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: ubuntu-22.04
-          - os: ubuntu-24.04
-          - os: macos-13
-          - os: macos-14
-          - os: macos-15
+          - os: ubuntu-latest
+          - os: macos-latest
 
     runs-on: ${{matrix.os}}
 

doc/smart_ptr/changelog.adoc

@@ -22,7 +22,6 @@ http://www.boost.org/LICENSE_1_0.txt
   been marked deprecated and will be removed in a future release.
 * Configurations that define `BOOST_NO_CXX11_HDR_ATOMIC` are no
   longer supported; a conforming {cpp}11 `<atomic>` is now required.
-* Consequently, Clang 3.5 and 3.6 are no longer supported.
 * The deprecated macros `BOOST_AC_USE_SPINLOCK`, `BOOST_AC_USE_PTHREADS`,
   `BOOST_SP_USE_SPINLOCK`, and `BOOST_SP_USE_PTHREADS` are no longer
   functional.