build(cmake): add AddressSanitizer support

Author: admtrv

.gitignore

@@ -1,5 +1,7 @@
 # build directory
 /cmake-build-debug/
+/cmake-build-release/
+/cmake-build-sanitize/
 
 # ide settings
 /.idea

CMakeLists.txt

@@ -5,9 +5,22 @@ project(objcurses)
 
 set(CMAKE_CXX_STANDARD 20)
 
+# address sanitizer
+option(SANITIZE "enable AddressSanitizer with extended checks" OFF)
+
+if(SANITIZE)
+    message(STATUS "AddressSanitizer enabled")
+    set(ASAN_FLAGS "-fsanitize=address -fno-omit-frame-pointer -g")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${ASAN_FLAGS}")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${ASAN_FLAGS}")
+
+    # embed runtime ASAN options into binary
+    add_compile_definitions(ASAN_OPTIONS="detect_leaks=1:strict_string_checks=1:check_initialization_order=1:detect_stack_use_after_return=1:detect_container_overflow=1:abort_on_error=1")
+endif()
+
 # collect all source files recursively, excluding build directory
 file(GLOB_RECURSE SOURCES CONFIGURE_DEPENDS "${CMAKE_SOURCE_DIR}/*.cpp")
-list(FILTER SOURCES EXCLUDE REGEX "${CMAKE_BINARY_DIR}")
+list(FILTER SOURCES EXCLUDE REGEX ".*/.*build.*/.*")
 
 # creating executable
 add_executable(${PROJECT_NAME} ${SOURCES})
@@ -19,4 +32,4 @@ target_link_libraries(${PROJECT_NAME} PRIVATE ${CURSES_LIBRARIES})
 target_include_directories(${PROJECT_NAME} PRIVATE ${CURSES_INCLUDE_DIR})
 
 # linking math library
-target_link_libraries(${PROJECT_NAME} PRIVATE m)
+target_link_libraries(${PROJECT_NAME} PRIVATE m)

main.cpp

@@ -18,6 +18,13 @@
 #include "config.h"
 #include "version.h"
 
+#ifdef ASAN_OPTIONS
+extern "C" const char *__asan_default_options() {
+    return ASAN_OPTIONS;
+}
+#endif
+
+
 // ncurses
 
 void init_ncurses()