Raise exception if infinite_sites is called during a simulation.

Closes #769
molpopgen · Oct 15, 2021 · ee3d402 · ee3d402
1 parent 95a3601
commit ee3d402
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/fwdpy11/src/ts/infinite_sites.cc b/fwdpy11/src/ts/infinite_sites.cc
@@ -39,6 +39,11 @@ init_infinite_sites(py::module& m)
         "infinite_sites",
         [](const fwdpy11::GSLrng_t& rng, fwdpy11::Population& pop,
            const double mu) -> unsigned {
+            if (pop.is_simulating)
+                {
+                    throw std::runtime_error(
+                        "infinite_sites cannot be called during a simulation");
+                }
             if (mu <= 0.0)
                 {
                     return 0u;