chore: enable AddressSanitizer for AppleClang builds (#191)

Enables `AddressSanitizer` on macOS builds. Additionally, enables the
leak detector in CI for Mac.

Author: cwaldren-ld

CMakeLists.txt

@@ -31,6 +31,8 @@ if (BUILD_TESTING)
     if (TESTING_SANITIZERS)
         if (CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
             set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize=undefined -fsanitize=leak")
+        elseif (CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang")
+            set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address")
         elseif (CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
             set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fsanitize=leak")
         endif ()