PROJStringFormatter::toString(): avoid invalid iterator increment (fixes

#2931)
OSGeo · Nov 8, 2021 · 3300531 · 3300531
1 parent fa0c0e6
commit 3300531
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/iso19111/io.cpp b/src/iso19111/io.cpp
@@ -7678,7 +7678,7 @@ const std::string &PROJStringFormatter::toString() const {
                 iterCur = steps.erase(iterPrev, std::next(iterCur));
                 if (iterCur != steps.begin())
                     iterCur = std::prev(iterCur);
-                if (iterCur == steps.begin())
+                if (iterCur == steps.begin() && iterCur != steps.end())
                     ++iterCur;
             };