Standard header cleanup.

[ginac.git] / ginac / factor.cpp

diff --git a/ginac/factor.cpp b/ginac/factor.cpp
index 8f8c87e858340e625df38a3bffe1fb3cfc0356fa..e9b2569b57f6f654d7e1f48819d9c2c28f09cbf1 100644 (file)
--- a/ginac/factor.cpp
+++ b/ginac/factor.cpp
@@ -70,6 +70,7 @@
 #include <limits>
 #include <list>
 #include <vector>
+#include <stack>
 #ifdef DEBUGFACTOR
 #include <ostream>
 #endif