When returning an error from jcompile() (which is passed through by
PyNode_Compile()), make sure that an exception is actually set --
otherwise someone stomped on our error. [2.0 checkin of this fix.]
diff --git a/Python/compile.c b/Python/compile.c
index 72f3be4..49e5863 100644
--- a/Python/compile.c
+++ b/Python/compile.c
@@ -3293,6 +3293,14 @@
Py_XDECREF(filename);
Py_XDECREF(name);
}
+ else if (!PyErr_Occurred()) {
+ /* This could happen if someone called PyErr_Clear() after an
+ error was reported above. That's not supposed to happen,
+ but I just plugged one case and I'm not sure there can't be
+ others. In that case, raise SystemError so that at least
+ it gets reported instead dumping core. */
+ PyErr_SetString(PyExc_SystemError, "lost syntax error");
+ }
com_free(&sc);
return co;
}