tests: Check that xmlInitParser doesn't allocate memory

2 files changed, 13 insertions, 3 deletions

diff --git a/parser.c b/parser.c
index ee64a597..7cc2a782 100644
--- a/parser.c
+++ b/parser.c
@@ -14484,6 +14484,9 @@ static int xmlParserInitialized = 0;
 
 void
 xmlInitParser(void) {
+    /*
+     * Note that the initialization code must not make memory allocations.
+     */
     if (xmlParserInitialized != 0)
 	return;
 
diff --git a/runtest.c b/runtest.c
index 52c83acd..c5545fba 100644
--- a/runtest.c
+++ b/runtest.c
@@ -531,10 +531,17 @@ testStructuredErrorHandler(void *ctx  ATTRIBUTE_UNUSED, xmlErrorPtr err) {
 
 static void
 initializeLibxml2(void) {
-    xmlPedanticParserDefault(0);
-
-    xmlMemSetup(xmlMemFree, xmlMemMalloc, xmlMemRealloc, xmlMemoryStrdup);
+    /*
+     * This verifies that xmlInitParser doesn't allocate memory with
+     * xmlMalloc
+     */
+    xmlFree = NULL;
+    xmlMalloc = NULL;
+    xmlRealloc = NULL;
+    xmlMemStrdup = NULL;
     xmlInitParser();
+    xmlMemSetup(xmlMemFree, xmlMemMalloc, xmlMemRealloc, xmlMemoryStrdup);
+    xmlPedanticParserDefault(0);
     xmlSetExternalEntityLoader(testExternalEntityLoader);
     xmlSetStructuredErrorFunc(NULL, testStructuredErrorHandler);
 #ifdef LIBXML_SCHEMAS_ENABLED