feat: enable comprehensive warnings and errors for GNU compiler; fix …

CHANGELOG.md

@@ -17,6 +17,7 @@ All notable changes to this project will be documented in this file.
 ### Compilation
 
 - Add Compile flag `MSTD_IGNORE_BUGGY_CODE` to ignore any kind of warnings for buggy libraries or headers
+- Add exhaustive error flags for compilation
 
 <!-- insertion marker -->
 ## [0.0.2](https://github.com/97gamjak/mstd/releases/tag/0.0.2) - 2025-11-20

CMakeLists.txt

@@ -22,6 +22,40 @@ target_compile_features(mstd
     cxx_std_20
 )
 
+if (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
+    target_compile_options(mstd INTERFACE
+        -Wall
+        -Wextra
+        -Wpedantic
+        -Werror
+
+        # correctness
+        -Wshadow
+        -Wconversion
+        -Wsign-conversion
+        -Wcast-align
+        -Wformat=2
+        -Wnull-dereference
+        -Wdouble-promotion
+        -Wimplicit-fallthrough
+        -Woverloaded-virtual
+        -Wnon-virtual-dtor
+        -Wold-style-cast
+        -Wuseless-cast
+        -Wduplicated-cond
+        -Wduplicated-branches
+        -Wlogical-op
+        -Wmisleading-indentation
+
+        # lifetime / safety
+        -Wuninitialized
+        -Wmaybe-uninitialized
+        -Winit-self
+
+        -Wno-error=deprecated-declarations
+    )
+endif()
+
 if(MSTD_BUILD_TESTS)
     include(CTest)
     enable_testing()

include/mstd/pack/integer_pack.hpp

@@ -93,7 +93,7 @@ namespace mstd
                 if (vals[i] != 0)
                     return i;
 
-            return -1;
+            return static_cast<size_t>(-1);
         }
     };
 

include/mstd/physics/potentials/lie_potential.hpp

@@ -46,6 +46,8 @@ namespace mstd
         Rep _coeff2{};
 
        public:
+        virtual ~LiePotential() = default;
+
         /**
          * @brief Constructs the potential with prefactors for the attractive
          *        and repulsive terms.