Restore explicitely defined constructor (with empty body).

It seems to make a difference on freebsd with clang 10.

diff --git a/src/smpi/include/smpi_f2c.hpp b/src/smpi/include/smpi_f2c.hpp
index 867800f..0b96ef9 100644 (file)
--- a/src/smpi/include/smpi_f2c.hpp
+++ b/src/smpi/include/smpi_f2c.hpp
@@ -36,6 +36,7 @@ class F2C {
     static char* get_key(char* key, int id);
     static void delete_lookup();
     static std::unordered_map<std::string, F2C*>* lookup();
+    F2C() {}
     virtual ~F2C() = default;
 
     //Override these to handle specific values.