-fix: boost::python::exec_file completely broken when PY_VERSION_HEX >= 0x03010000. Bug: char* f pointed to a temporary buffer returned by PyBytes_AsString. This buffer was released when Py_DECREF(fb) was called. As a result, f pointed to invalid memory when being passed to Py_RunFile.

Hajo Kirchhoff · stefanseefeld · commit a060d43bf2eb · 2021-08-10T12:25:40.000-04:00
diff --git a/src/exec.cpp b/src/exec.cpp
@@ -109,8 +109,8 @@ object BOOST_PYTHON_DECL exec_file(char const *filename, object global, object l
   PyObject *fo = Py_BuildValue("s", f);
   PyObject *fb = Py_None;
   PyUnicode_FSConverter(fo, &fb);
-  f = PyBytes_AsString(fb);
-  FILE *fs = fopen(f, "r");
+  char *f_as_uft = PyBytes_AsString(fb);
+  FILE *fs = fopen(f_as_uft, "r");
   Py_DECREF(fo);
   Py_DECREF(fb);
 #elif PY_VERSION_HEX >= 0x03000000
