Roll libxml to 3169602058bd2d04913909e869c61d1540bc7fb4

third_party/libxml/src/runtest.c

Index: third_party/libxml/src/runtest.c
diff --git a/third_party/libxml/src/runtest.c b/third_party/libxml/src/runtest.c
index bb74d2a82e2be682db4dc2bc0129362f4fbb90ee..18615773228b0cc85522d6cb8037f5598c92a8d4 100644
--- a/third_party/libxml/src/runtest.c
+++ b/third_party/libxml/src/runtest.c
@@ -2317,10 +2317,19 @@ static FILE *xpathOutput;
 static xmlDocPtr xpathDocument;
 
 static void
+ignoreGenericError(void *ctx ATTRIBUTE_UNUSED,
+        const char *msg ATTRIBUTE_UNUSED, ...) {
+}
+
+static void
 testXPath(const char *str, int xptr, int expr) {
+    xmlGenericErrorFunc handler = ignoreGenericError;
     xmlXPathObjectPtr res;
     xmlXPathContextPtr ctxt;
 
+    /* Don't print generic errors to stderr. */
+    initGenericErrorDefaultFunc(&handler);
+
     nb_tests++;
 #if defined(LIBXML_XPTR_ENABLED)
     if (xptr) {
@@ -2349,6 +2358,9 @@ testXPath(const char *str, int xptr, int expr) {
     xmlXPathDebugDumpObject(xpathOutput, res, 0);
     xmlXPathFreeObject(res);
     xmlXPathFreeContext(ctxt);
+
+    /* Reset generic error handler. */
+    initGenericErrorDefaultFunc(NULL);
 }
 
 /**