fix: avoid changing class outside of GIL

pybind · Jan 27, 2021 · 732bf88 · 732bf88
1 parent dff9b3b
commit 732bf88
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/include/pybind11/iostream.h b/include/pybind11/iostream.h
@@ -52,9 +52,11 @@ class pythonbuf : public std::streambuf {
 
                 pywrite(line);
                 pyflush();
+
+                // Placed inside gil_scoped_aquire as a mutex to avoid a race
+                setp(pbase(), epptr());
             }
 
-            setp(pbase(), epptr());
         }
         return 0;
     }