cmake: Allow to build clazy with ASAN/UBSAN

For clazy's own development only

CMakeLists.txt

@@ -47,6 +47,14 @@ option(CLAZY_AST_MATCHERS_CRASH_WORKAROUND "Disable AST Matchers if being built
 option(LINK_CLAZY_TO_LLVM "Links the clazy plugin to LLVM. Switch to OFF if your clang binary has all symbols already. Might need to be OFF if your LLVM is static." ON)
 option(APPIMAGE_HACK "Links the clazy plugin to the clang tooling libs only. For some reason this is needed when building on our old CentOS 6.8 to create the AppImage." OFF)
 option(CLAZY_MAN_PAGE "Builds the man page." ON)
+option(CLAZY_ENABLE_SANITIZERS "Builds clazy with ASAN/UBSAN. For clazy's own development only." OFF)
+
+if (CLAZY_ENABLE_SANITIZERS)
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
+    if (NOT MSVC)
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=undefined")
+    endif()
+endif()
 
 if (CLAZY_AST_MATCHERS_CRASH_WORKAROUND AND "${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang")
     message("Enabling AST Matchers workaround. Consider building with gcc instead. See bug #392223.")

CMakePresets.json

@@ -12,6 +12,18 @@
                 "CMAKE_EXPORT_COMPILE_COMMANDS" : "ON"
             }
         },
+        {
+            "name": "dev-asan",
+            "displayName": "dev-asan",
+            "generator": "Ninja",
+            "binaryDir": "${sourceDir}/build-dev-asan",
+            "cacheVariables": {
+                "CMAKE_BUILD_TYPE": "Debug",
+                "CLAZY_MAN_PAGE" : "OFF",
+                "CMAKE_EXPORT_COMPILE_COMMANDS" : "ON",
+                "CLAZY_ENABLE_SANITIZERS" : "ON"
+            }
+        },
         {
             "name": "profile",
             "displayName": "profile",