X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=ginac%2Fstructure.h;h=dbe97d4226740060ef3a329a5b8913534ef2a117;hp=b929e88caceb61cc2bab30046d1664c77c711d29;hb=69cf20e8ee183eadfe457af33dc88a9f568038e8;hpb=4dba55ca4aecc279411659aa77dbb78137e68a02

diff --git a/ginac/structure.h b/ginac/structure.h
index b929e88c..dbe97d42 100644
--- a/ginac/structure.h
+++ b/ginac/structure.h
@@ -26,6 +26,7 @@
 #include <functional>
 
 #include "ex.h"
+#include "operators.h"
 #include "print.h"
 
 namespace GiNaC {
@@ -132,7 +133,7 @@ public:
 	ex evalf(int level = 0) const { return inherited::evalf(level); }
 	ex evalm() const { return inherited::evalm(); }
 protected:
-	ex eval_ncmul(const exvector & v) const { return hold_ncmul(v); }
+	ex eval_ncmul(const exvector & v) const { return this->hold_ncmul(v); }
 public:
 	ex eval_indexed(const basic & i) const { return i.hold(); }