pythongh-118926: Spill deferred references to stack in cases generator

This automatically spills the results from `_PyStackRef_FromPyObjectNew` to the in-memory stack so that the deferred references are visible to the GC before we make any possibly escaping call. Co-authored-by: Ken Jin <[email protected]>
colesbury · Aug 6, 2024 · 70272dc · 70272dc
1 parent c4e8196
commit 70272dc
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Showing 10 changed files with 184 additions and 74 deletions.
diff --git a/Python/bytecodes.c b/Python/bytecodes.c
@@ -1424,7 +1424,7 @@ dummy_func(
                                  "no locals found");
                 ERROR_IF(true, error);
             }
-            locals = PyStackRef_FromPyObjectNew(l);;
+            locals = PyStackRef_FromPyObjectNew(l);
         }
 
         inst(LOAD_FROM_DICT_OR_GLOBALS, (mod_or_class_dict -- v)) {

diff --git a/Python/executor_cases.c.h b/Python/executor_cases.c.h
diff --git a/Python/generated_cases.c.h b/Python/generated_cases.c.h