optimization to ex::expand()

diff --git a/ginac/ex.cpp b/ginac/ex.cpp
index 3c6d504876e826b37e288c6261f2d197ab6e27ea..ebb8f651c2d3660cb9d8448fcb91456946572498 100644 (file)
--- a/ginac/ex.cpp
+++ b/ginac/ex.cpp
@@ -77,7 +77,7 @@ ex ex::expand(unsigned options) const
 {
        GINAC_ASSERT(bp!=0);
        if (options == 0 && (bp->flags & status_flags::expanded)) // The "expanded" flag only covers the standard options; someone might want to re-expand with different options
-               return *bp;
+               return *this;
        else
                return bp->expand(options);
 }