1 files changed, 5 insertions, 3 deletions
diff --git a/relaxng.c b/relaxng.c
index 5779e7fc..3d3e69c0 100644
--- a/relaxng.c
+++ b/relaxng.c
@@ -507,7 +507,7 @@ xmlRngVErrMemory(xmlRelaxNGValidCtxtPtr ctxt, const char *extra)
  *
  * Handle a Relax NG Parsing error
  */
-static void
+static void LIBXML_ATTR_FORMAT(4,0)
 xmlRngPErr(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node, int error,
            const char *msg, const xmlChar * str1, const xmlChar * str2)
 {
@@ -541,7 +541,7 @@ xmlRngPErr(xmlRelaxNGParserCtxtPtr ctxt, xmlNodePtr node, int error,
  *
  * Handle a Relax NG Validation error
  */
-static void
+static void LIBXML_ATTR_FORMAT(4,0)
 xmlRngVErr(xmlRelaxNGValidCtxtPtr ctxt, xmlNodePtr node, int error,
            const char *msg, const xmlChar * str1, const xmlChar * str2)
 {
@@ -2088,6 +2088,7 @@ xmlRelaxNGGetErrorString(xmlRelaxNGValidErr err, const xmlChar * arg1,
                          const xmlChar * arg2)
 {
     char msg[1000];
+    xmlChar *result;
 
     if (arg1 == NULL)
         arg1 = BAD_CAST "";
@@ -2215,7 +2216,8 @@ xmlRelaxNGGetErrorString(xmlRelaxNGValidErr err, const xmlChar * arg1,
         snprintf(msg, 1000, "Unknown error code %d\n", err);
     }
     msg[1000 - 1] = 0;
-    return (xmlStrdup((xmlChar *) msg));
+    result = xmlCharStrdup(msg);
+    return (xmlEscapeFormatString(&result));
 }
 
 /**