pythongh-149122: Fix refleak in codegen (pythonGH-149179)

encukou · web-flow · commit 4599335a83a2 · 2026-04-30T10:05:48.000Z
diff --git a/Python/codegen.c b/Python/codegen.c
@@ -3962,8 +3962,10 @@ maybe_optimize_function_call(compiler *c, expr_ty e, jump_target_label end)
     expr_ty generator_exp = asdl_seq_GET(args, 0);
     PySTEntryObject *generator_entry = _PySymtable_Lookup(SYMTABLE(c), (void *)generator_exp);
     if (generator_entry->ste_coroutine) {
+        Py_DECREF(generator_entry);
         return 0;
     }
+    Py_DECREF(generator_entry);
 
     location loc = LOC(func);
 

Original file line number	Diff line number	Diff line change
`@@ -3962,8 +3962,10 @@ maybe_optimize_function_call(compiler *c, expr_ty e, jump_target_label end)`
`3962`	`3962`	`expr_ty generator_exp = asdl_seq_GET(args, 0);`
`3963`	`3963`	`PySTEntryObject generator_entry = _PySymtable_Lookup(SYMTABLE(c), (void )generator_exp);`
`3964`	`3964`	`if (generator_entry->ste_coroutine) {`
	`3965`	`+ Py_DECREF(generator_entry);`
`3965`	`3966`	`return 0;`
`3966`	`3967`	`}`
	`3968`	`+ Py_DECREF(generator_entry);`
`3967`	`3969`
`3968`	`3970`	`location loc = LOC(func);`
`3969`	`3971`