--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/testsuite/g++.dg/gcov/pr88263.C	Thu Feb 13 11:34:05 2020 +0900
@@ -0,0 +1,30 @@
+// PR gcov-profile/88263
+// { dg-options "-fprofile-arcs -ftest-coverage -std=c++11" }
+// { dg-do run { target native } }
+
+#include <sstream>
+
+namespace logging {
+
+class Logstream {
+public:
+
+private:
+    /// The logging stream
+    static thread_local std::ostringstream os_;
+};
+
+}
+
+namespace logging {
+
+thread_local std::ostringstream Logstream::os_;
+
+}
+
+int main()
+{
+  return 0;
+}
+
+// { dg-final { run-gcov pr88263.C } }