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-rw-r--r--libtests/cxx11.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/libtests/cxx11.cc b/libtests/cxx11.cc
index 91ed7b15..ba4525ed 100644
--- a/libtests/cxx11.cc
+++ b/libtests/cxx11.cc
@@ -105,7 +105,7 @@ void do_iteration()
std::vector<int> v = { 1, 2, 3, 4 };
assert(v.size() == 4);
int sum = 0;
- for (auto i: v)
+ for (auto& i: v)
{
sum += i;
}