Fix two leaks in class pseries, where zero terms could have been created.

[ginac.git] / ginac / normal.cpp

diff --git a/ginac/normal.cpp b/ginac/normal.cpp
index 6d0bdbd5ae67e3288fc99d1cbe222012bafd9f54..0832688dad690849f822a3542a76d372b5a2e992 100644 (file)
--- a/ginac/normal.cpp
+++ b/ginac/normal.cpp
@@ -2060,15 +2060,13 @@ ex power::normal(lst &sym_lst, lst &repl_lst, int level) const
  *  @see ex::normal */
 ex pseries::normal(lst &sym_lst, lst &repl_lst, int level) const
 {
-       epvector new_seq;
-       new_seq.reserve(seq.size());
-
-       epvector::const_iterator it = seq.begin(), itend = seq.end();
-       while (it != itend) {
-               new_seq.push_back(expair(it->rest.normal(), it->coeff));
-               it++;
+       epvector newseq;
+       for (epvector::const_iterator i=seq.begin(); i!=seq.end(); ++i) {
+               ex restexp = i->rest.normal();
+               if (!restexp.is_zero())
+                       newseq.push_back(expair(restexp, i->coeff));
        }
-       ex n = pseries(relational(var,point), new_seq);
+       ex n = pseries(relational(var,point), newseq);
        return (new lst(replace_with_symbol(n, sym_lst, repl_lst), _ex1()))->setflag(status_flags::dynallocated);
 }