diff -Nrup a/libgnucash/engine/qofid.cpp b/libgnucash/engine/qofid.cpp
--- a/libgnucash/engine/qofid.cpp 2019-01-11 16:57:38.000000000 -0700
+++ b/libgnucash/engine/qofid.cpp 2020-01-07 13:13:06.884130657 -0700
@@ -303,7 +303,7 @@ qof_collection_set_data (QofCollection *
/* =============================================================== */
-struct _iterate
+struct __iterate
{
QofInstanceForeachCB fcn;
gpointer data;
@@ -312,7 +312,7 @@ struct _iterate
static void
foreach_cb (gpointer item, gpointer arg)
{
- struct _iterate *iter = static_cast<_iterate*>(arg);
+ struct __iterate *iter = static_cast<__iterate*>(arg);
QofInstance *ent = static_cast<QofInstance*>(item);
iter->fcn (ent, iter->data);
@@ -322,7 +322,7 @@ void
qof_collection_foreach (const QofCollection *col, QofInstanceForeachCB cb_func,
gpointer user_data)
{
- struct _iterate iter;
+ struct __iterate iter;
GList *entries;
g_return_if_fail (col);