[Python] Fix self move to pyobject_file (cppfastio#1170)

trcrsired · web-flow · commit 3c8eebcbd6cb · 2025-06-12T21:45:46.000+08:00
* unfinshed overhual of c's fwrite/fread etc

* done

* self-reference for pyobject_file
diff --git a/include/fast_io_driver/python/pyobject.h b/include/fast_io_driver/python/pyobject.h
@@ -141,6 +141,10 @@ class pyobject_file : public pyobject_io_observer
 	}
 	pyobject_file &operator=(pyobject_file &&pob) noexcept
 	{
+		if (__builtin_addressof(pob) == this)
+		{
+			return *this;
+		}
 		::fast_io::details::py_inc_dec_ref_impl<true>(this->p);
 		this->p = pob.p;
 		pob.p = nullptr;

Original file line number	Diff line number	Diff line change
`@@ -141,6 +141,10 @@ class pyobject_file : public pyobject_io_observer`
`141`	`141`	`}`
`142`	`142`	`pyobject_file &operator=(pyobject_file &&pob) noexcept`
`143`	`143`	`{`
	`144`	`+ if (__builtin_addressof(pob) == this)`
	`145`	`+ {`
	`146`	`+ return *this;`
	`147`	`+ }`
`144`	`148`	`::fast_io::details::py_inc_dec_ref_impl<true>(this->p);`
`145`	`149`	`this->p = pob.p;`
`146`	`150`	`pob.p = nullptr;`