fix(ci): replace unavailable gcc-13/g++-13 with gcc/g++ in CodeQL workflow

[Copilot]

gcc-13/g++-13 are no longer locatable as packages on the ubuntu-22.04 GitHub Actions runner image, causing the "Analyze (c-cpp)" CodeQL job to fail at the dependency install step.

Changes

• .github/workflows/codeql.yml
  • Replace gcc-13 g++-13 with gcc g++ in apt-get install
  • Update CC/CXX env vars and -DCMAKE_C_COMPILER/-DCMAKE_CXX_COMPILER flags accordingly

-  gcc-13 g++-13 \
+  gcc g++ \
...
-  CC: gcc-13
-  CXX: g++-13
-  cmake -B _build -DCMAKE_C_COMPILER=gcc-13 -DCMAKE_CXX_COMPILER=g++-13
+  CC: gcc
+  CXX: g++
+  cmake -B _build -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++

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Pull request overview

Copilot reviewed 1 out of 1 changed files in this pull request and generated 1 comment.

Suppressed comments (1)

.github/workflows/codeql.yml:50

• The build step hard-codes gcc/g++. If the workflow installs a newer compiler (needed for the project’s C++23 std::generator usage), this step should also point CMake at the same toolchain to avoid accidentally building with the older default compiler.

        env:
          CC: gcc
          CXX: g++
        run: |
          cmake -B _build -DCMAKE_C_COMPILER=gcc -DCMAKE_CXX_COMPILER=g++
          cmake --build _build --parallel $(nproc)

[clauspruefer]

@copilot this will not fix the problem! We need a gcc >= 13 and g++ >= 13 which is not the case anymore with changing back to gcc and g++ from gcc-13 and g++-13 or did you update the base Ubuntu VM image used to a newer one? If not, check how to install the gcc-14 and g++14 packages.

[Copilot]

@copilot this will not fix the problem! We need a gcc >= 13 and g++ >= 13 which is not the case anymore with changing back to gcc and g++ from gcc-13 and g++-13 or did you update the base ...

Updated in commit 62e128b: the CodeQL workflow now adds ppa:ubuntu-toolchain-r/test, installs gcc-14/g++-14, and uses them via CC/CXX and CMake compiler flags.