diff --git a/common/xash3d_types.h b/common/xash3d_types.h
index 7ee87db8..6b375a33 100644
--- a/common/xash3d_types.h
+++ b/common/xash3d_types.h
@@ -79,11 +79,22 @@ typedef uint64_t longtime_t;
 		#define GAME_EXPORT
 	#endif
 
+	#define MALLOC __attribute__(( malloc ))
+
+	// added in GCC 11
+	#if __GNUC__ >= 11
+		// might want to set noclone due to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116893
+		// but it's easier to not force mismatched-dealloc to error yet
+		#define MALLOC_LIKE( x, y ) __attribute__(( malloc( x, y )))
+	#else
+		#define MALLOC_LIKE( x, y ) MALLOC
+	#endif
 	#define NORETURN           __attribute__(( noreturn ))
 	#define NONNULL            __attribute__(( nonnull ))
 	#define _format( x )       __attribute__(( format( printf, x, x + 1 )))
 	#define ALLOC_CHECK( x )   __attribute__(( alloc_size( x )))
 	#define NO_ASAN            __attribute__(( no_sanitize( "address" )))
+	#define WARN_UNUSED_RESULT __attribute__(( warn_unused_result ))
 	#define RENAME_SYMBOL( x ) asm( x )
 #else
 	#if defined( _MSC_VER )
@@ -99,6 +110,9 @@ typedef uint64_t longtime_t;
 	#define _format( x )
 	#define ALLOC_CHECK( x )
 	#define RENAME_SYMBOL( x )
+	#define MALLOC
+	#define MALLOC_LIKE( x, y )
+	#define WARN_UNUSED_RESULT
 #endif
 
 #if __GNUC__ >= 3