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-rw-r--r--tests/utils/gtest-print-helpers.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/tests/utils/gtest-print-helpers.h b/tests/utils/gtest-print-helpers.h
index 6dc1217..60f42b4 100644
--- a/tests/utils/gtest-print-helpers.h
+++ b/tests/utils/gtest-print-helpers.h
@@ -11,7 +11,7 @@ inline void PrintTo(const Greeter::State& state, std::ostream* os) {
}
}
-std::ostream& operator<<(std::ostream& os, const Greeter::State& state) {
+inline std::ostream& operator<<(std::ostream& os, const Greeter::State& state) {
PrintTo(state, &os);
return os;
}