diff --git a/codegen/genTestApi.py b/codegen/genTestApi.py
index 07f97925..4bab3f3e 100755
--- a/codegen/genTestApi.py
+++ b/codegen/genTestApi.py
@@ -168,16 +168,23 @@ for file in os.listdir(xmlDocDir):
             module1, module2 = xmlmod.findModules(module, name)
 
             cargs = []
+            skip = False
             for arg in func.findall('param'):
                 atype = etree.tostring(arg.find('type'),
                     method='text', encoding='unicode').rstrip()
                 if atype == 'void':
                     continue
+                if atype == 'va_list':
+                    skip = True
+                    break
                 if re.search(r'(Ptr|\*)$', atype):
                     cargs.append('NULL')
                 else:
                     cargs.append('0')
 
+            if skip:
+                continue
+
             mfunc = functions.get(module1)
             if mfunc is None:
                 mfunc = {}
diff --git a/testapi.c b/testapi.c
index 76d4d168..6ed0c38a 100644
--- a/testapi.c
+++ b/testapi.c
@@ -543,7 +543,6 @@ main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
     xmlStrEqual(NULL, NULL);
     xmlStrPrintf(NULL, 0, NULL, 0);
     xmlStrQEqual(NULL, NULL, NULL);
-    xmlStrVPrintf(NULL, 0, NULL, 0);
     xmlStrcasecmp(NULL, NULL);
     xmlStrcasestr(NULL, NULL);
     xmlFree(xmlStrcat(NULL, NULL));
@@ -1198,19 +1197,6 @@ main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED) {
     xmlTextWriterWriteRaw(NULL, NULL);
     xmlTextWriterWriteRawLen(NULL, NULL, 0);
     xmlTextWriterWriteString(NULL, NULL);
-    xmlTextWriterWriteVFormatAttribute(NULL, NULL, NULL, 0);
-    xmlTextWriterWriteVFormatAttributeNS(NULL, NULL, NULL, NULL, NULL, 0);
-    xmlTextWriterWriteVFormatCDATA(NULL, NULL, 0);
-    xmlTextWriterWriteVFormatComment(NULL, NULL, 0);
-    xmlTextWriterWriteVFormatDTD(NULL, NULL, NULL, NULL, NULL, 0);
-    xmlTextWriterWriteVFormatDTDAttlist(NULL, NULL, NULL, 0);
-    xmlTextWriterWriteVFormatDTDElement(NULL, NULL, NULL, 0);
-    xmlTextWriterWriteVFormatDTDInternalEntity(NULL, 0, NULL, NULL, 0);
-    xmlTextWriterWriteVFormatElement(NULL, NULL, NULL, 0);
-    xmlTextWriterWriteVFormatElementNS(NULL, NULL, NULL, NULL, NULL, 0);
-    xmlTextWriterWriteVFormatPI(NULL, NULL, NULL, 0);
-    xmlTextWriterWriteVFormatRaw(NULL, NULL, 0);
-    xmlTextWriterWriteVFormatString(NULL, NULL, 0);
 #endif /* LIBXML_WRITER_ENABLED */
 
 #ifdef LIBXML_XINCLUDE_ENABLED