(Theoretically) improve 'Unknown uop' message

gvanrossum · Nov 20, 2023 · 0fae4e6 · 0fae4e6
1 parent ddba5ed
commit 0fae4e6
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/Python/ceval.c b/Python/ceval.c
@@ -1022,7 +1022,9 @@ _PyEval_EvalFrameDefault(PyThreadState *tstate, _PyInterpreterFrame *frame, int
             default:
 #ifdef Py_DEBUG
             {
-                fprintf(stderr, "Unknown uop %d, oparg %d\n", opcode, oparg);
+                fprintf(stderr, "Unknown uop %d, oparg %d, operand %" PRIu64 " @ %d\n",
+                        opcode, next_uop[-1].oparg, next_uop[-1].operand,
+                        (int)(next_uop - current_executor->trace - 1));
                 Py_FatalError("Unknown uop");
             }
 #else