score: Add and use malloc() family attributes

Update #3583.

cpukit/include/rtems/malloc.h

@@ -138,7 +138,8 @@ void *rtems_heap_allocate_aligned_with_boundary(
   size_t size,
   uintptr_t alignment,
   uintptr_t boundary
-);
+) RTEMS_MALLOCLIKE RTEMS_ALLOC_SIZE(1) RTEMS_ALLOC_ALIGN(2)
+  RTEMS_WARN_UNUSED_RESULT;
 
 /**
  * @brief Extends the memory available for the heap using the memory area

cpukit/include/rtems/score/basedefs.h

@@ -237,6 +237,56 @@
   #define RTEMS_PRINTFLIKE( _format_pos, _ap_pos )
 #endif
 
+/**
+ * @brief Tells the compiler that this function is a memory allocation function
+ * similar to malloc().
+ */
+#if defined(__GNUC__)
+  #define RTEMS_MALLOCLIKE __attribute__((__malloc__))
+#else
+  #define RTEMS_MALLOCLIKE
+#endif
+
+/**
+ * @brief Tells the compiler the memory allocation size parameter of this
+ * function similar to malloc().
+ */
+#if defined(__GNUC__)
+  #define RTEMS_ALLOC_SIZE( _index ) __attribute__((__alloc_size__(_index)))
+#else
+  #define RTEMS_ALLOC_SIZE( _index )
+#endif
+
+/**
+ * @brief Tells the compiler the memory allocation item count and item size
+ * parameter of this function similar to calloc().
+ */
+#if defined(__GNUC__)
+  #define RTEMS_ALLOC_SIZE_2( _count_index, _size_index ) \
+     __attribute__((__alloc_size__(_count_index, _size_index)))
+#else
+  #define RTEMS_ALLOC_SIZE_2( _count_index, _size_index )
+#endif
+
+/**
+ * @brief Tells the compiler the memory allocation alignment parameter of this
+ * function similar to aligned_alloc().
+ */
+#if defined(__GNUC__)
+  #define RTEMS_ALLOC_ALIGN( _index ) __attribute__((__alloc_align__(_index)))
+#else
+  #define RTEMS_ALLOC_ALIGN( _index )
+#endif
+
+/**
+ * @brief Tells the compiler that the result of this function should be used.
+ */
+#if defined(__GNUC__)
+  #define RTEMS_WARN_UNUSED_RESULT __attribute__((__warn_unused_result__))
+#else
+  #define RTEMS_WARN_UNUSED_RESULT
+#endif
+
 /**
  * @brief Obfuscates the variable so that the compiler cannot perform
  * optimizations based on the variable value.