refs #12358 - CI-unixish.yml: added step which checks for AST and ValueFlow changes [skip ci]

Author: firewave

.github/workflows/CI-unixish.yml

@@ -613,6 +613,14 @@ jobs:
           # compile with verification and ast matchers
           make -j$(nproc) -s CPPFLAGS="-DCHECK_INTERNAL" CXXOPTS="-g -O2 -w -DHAVE_BOOST" MATCHCOMPILER=yes VERIFY=1
 
+      - name: Self check (output)
+        run: |
+          wget https://github.com/danmar/simplecpp/archive/refs/tags/1.5.1.tar.gz
+          tar xvf 1.5.1.tar.gz
+          # TODO: should include --verbose but identifiers in output differ on each run
+          ./cppcheck -q --std=c++11 --template=selfcheck -D__GNUC__ --error-exitcode=1 --library=gnu --inconclusive --exception-handling --check-level=exhaustive --debug --debug-template simplecpp-1.5.1/simplecpp.cpp > selfcheck.res
+          diff -u selfcheck.exp selfcheck.res
+
       - name: CMake
         run: |
           cmake -S . -B cmake.output -DHAVE_RULES=On -DBUILD_TESTS=On -DBUILD_GUI=On -DWITH_QCHART=On -DBUILD_TRIAGE=On -DUSE_MATCHCOMPILER=Verify -DENABLE_CHECK_INTERNAL=On -DCPPCHK_GLIBCXX_DEBUG=Off -DCMAKE_DISABLE_PRECOMPILE_HEADERS=On -DCMAKE_GLOBAL_AUTOGEN_TARGET=On -DDISABLE_DMAKE=On