Bump c++ versions

* Update cpp.yml

* Update cpp.yml

* Update cpp.yml

* Update cpp.yml

* Update cpp.yml

* Update cpp.yml

* Update cpp.yml

* Update cpp.yml

* Update cpp.yml

* Update cpp.yml

Author: indy256

.github/workflows/cpp.yml

@@ -9,14 +9,16 @@ jobs:
       matrix:
         config:
           - {compiler-options: "-Wall -Wextra -std=c++20"}
-          - {compiler-options: "-Wall -Wextra -Wno-sign-compare -std=c++23"}
-          - {compiler-options: "-fanalyzer -Wno-analyzer-null-dereference -std=c++23"}
+          - {compiler-options: "-Wall -Wextra -std=c++23"}
+          - {compiler-options: "-Wall -Wextra -Wno-sign-compare -std=c++26"}
+          - {compiler-options: "-fanalyzer -Wno-analyzer-null-dereference -std=c++26"}
     steps:
       - uses: actions/checkout@v2
-#      - name: install g++
-#        run: |
-#          sudo add-apt-repository ppa:ubuntu-toolchain-r/test
-#          sudo apt-get install g++-14
+      # - name: install g++
+      #   run: |
+      #     sudo add-apt-repository ppa:ubuntu-toolchain-r/test
+      #     sudo apt update
+      #     sudo apt-get install g++-14
       - name: compile
         run: |
           cd cpp
@@ -31,12 +33,12 @@ jobs:
         wget http://mirrors.kernel.org/ubuntu/pool/main/libf/libffi/libffi7_3.3-4_amd64.deb
         sudo dpkg -i libffi7_3.3-4_amd64.deb
         sudo apt-key adv --fetch-keys https://apt.llvm.org/llvm-snapshot.gpg.key
-        sudo add-apt-repository "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-19 main"
-        sudo apt-get install clang-19
+        sudo add-apt-repository "deb http://apt.llvm.org/focal/ llvm-toolchain-focal-20 main"
+        sudo apt-get install clang-20
     - name: compile
       run: |
         cd cpp
-        find . -name '*.cpp' -print0 | xargs -n1 -0 clang++-19 -Wall -Wextra -std=c++23
+        find . -name '*.cpp' -print0 | xargs -n1 -0 clang++-20 -Wall -Wextra -std=c++26
 
   build-macos-clang:
     runs-on: macos-latest