Index: expat-2.1.1/lib/expat.h
===================================================================
--- expat-2.1.1.orig/lib/expat.h
+++ expat-2.1.1/lib/expat.h
@@ -973,9 +973,12 @@ XML_FreeContentModel(XML_Parser parser,
 
 /* Exposing the memory handling functions used in Expat */
 XMLPARSEAPI(void *)
+XML_ATTR_MALLOC
+XML_ATTR_ALLOC_SIZE(2)
 XML_MemMalloc(XML_Parser parser, size_t size);
 
 XMLPARSEAPI(void *)
+XML_ATTR_ALLOC_SIZE(3)
 XML_MemRealloc(XML_Parser parser, void *ptr, size_t size);
 
 XMLPARSEAPI(void)
Index: expat-2.1.1/lib/expat_external.h
===================================================================
--- expat-2.1.1.orig/lib/expat_external.h
+++ expat-2.1.1/lib/expat_external.h
@@ -70,6 +70,17 @@
 #define XMLIMPORT  __attribute__ ((visibility ("default")))
 #endif
 
+#if defined(__GNUC__) && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96))
+#define XML_ATTR_MALLOC __attribute__((__malloc__))
+#else
+#define XML_ATTR_MALLOC
+#endif
+
+#if defined(__GNUC__) && ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3))
+#define XML_ATTR_ALLOC_SIZE(x)  __attribute__((__alloc_size__(x)))
+#else
+#define XML_ATTR_ALLOC_SIZE(x)
+#endif
 
 #define XMLPARSEAPI(type) XMLIMPORT type XMLCALL