From: Alexei Sheplyakov <varg@metalica.kh.ua>
Date: Sat, 8 Aug 2009 10:06:36 +0000 (+0300)
Subject: check_parameter_G: fix pontential increment of end().
X-Git-Tag: release_1-5-4~12
X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=commitdiff_plain;h=99c7ff6b72691f2eff30f94934d65d1ba7136ff9

check_parameter_G: fix pontential increment of end().

Incrementing past-the-end iterator is not permitted by the standard, see
[lib.input.iterators].
(cherry picked from commit 49a44f7d55ec0d6686d3c32c7081a07d10c93274)
---

diff --git a/ginac/inifcns_nstdsums.cpp b/ginac/inifcns_nstdsums.cpp
index b4105338..11a91dd1 100644
--- a/ginac/inifcns_nstdsums.cpp
+++ b/ginac/inifcns_nstdsums.cpp
@@ -659,6 +659,8 @@ Gparameter::const_iterator check_parameter_G(const Gparameter& a, int scale,
 			++trailing_zeros;
 		}
 	}
+	if (lastnonzero == a.end())
+		return a.end();
 	return ++lastnonzero;
 }