Test the possibility of using problem matchers for errors/warnings

.github/workflows/ci.yml

@@ -131,7 +131,7 @@ jobs:
         # has meaningful results
       - name: Configure CMake
         run: |
-          cmake -S . -B ./build -G "${{matrix.generator}}" -DCMAKE_BUILD_TYPE:STRING=${{matrix.build_type}} -DENABLE_DEVELOPER_MODE:BOOL=${{matrix.developer_mode}} -DOPT_ENABLE_COVERAGE:BOOL=${{ matrix.build_type == 'Debug' }}
+          cmake -S . -B ./build -G "${{matrix.generator}}" -DCMAKE_BUILD_TYPE:STRING=${{matrix.build_type}} -DENABLE_DEVELOPER_MODE:BOOL=${{matrix.developer_mode}} -DOPT_ENABLE_COVERAGE:BOOL=${{ matrix.build_type == 'Debug' }} -DOPT_WARNINGS_AS_ERRORS:BOOL=${{ matrix.build_type == 'Debug' }}
 
       - name: Build
         # Execute the build.  You can specify a specific target with "--target <NAME>"

CMakeLists.txt

@@ -17,7 +17,7 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 # https://github.com/cpp-best-practices/project_options
 include(FetchContent)
 FetchContent_Declare(_project_options
-                     URL https://github.com/cpp-best-practices/project_options/archive/refs/tags/v0.15.1.zip)
+                     URL https://github.com/lefticus/project_options/archive/refs/heads/set_cppcheck_template.zip)
 FetchContent_MakeAvailable(_project_options)
 include(${_project_options_SOURCE_DIR}/Index.cmake)
 
@@ -50,9 +50,18 @@ if(BUILDING_MULTI_CONFIG)
   endif()
 endif()
 
+
+# Note: by default ENABLE_DEVELOPER_MODE is True
+# This means that all analysis (sanitizers, static analysis)
+# is enabled and all warnings are treated as errors
+# if you want to switch this behavior, uncomment this line:
+# set(ENABLE_DEVELOPER_MODE FALSE CACHE BOOL "Enable 'developer mode'")
+
+
 include(${_project_options_SOURCE_DIR}/src/DynamicProjectOptions.cmake)
 
-# defaulted_project_options sets recommended defaults and provides user and developer
+
+# dynamic_project_options sets recommended defaults and provides user and developer
 # modes and full GUI support for choosing options at configure time
 
 # for more flexibility, look into project_options() macro

src/main.cpp

@@ -37,6 +37,17 @@ int main(int argc, const char **argv)
     spdlog::info("Hello, {}!", "World");
 
     fmt::print("Hello, from {}\n", "{fmt}");
+
+    // this line exists solely to check the problem matchers
+    int *i = nullptr;
+    *i = 42;
+
+    int j;
+    int k;
+    int l = j + k;
+
+    fmt::print("Test printing values {} {} {} {}\n", *i, j, k, l);
+
   } catch (const std::exception &e) {
     fmt::print("Unhandled exception in main: {}", e.what());
   }