Annotate memory allocators for GCC
diff --git a/expat/lib/expat.h b/expat/lib/expat.h
index ec62f14..5abcefd 100644
--- a/expat/lib/expat.h
+++ b/expat/lib/expat.h
@@ -973,9 +973,12 @@
/* 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)
diff --git a/expat/lib/expat_external.h b/expat/lib/expat_external.h
index 2c03284..fdfb626 100644
--- a/expat/lib/expat_external.h
+++ b/expat/lib/expat_external.h
@@ -71,6 +71,17 @@
#define XMLIMPORT
#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
