gh-105184: document that marshal functions can fail and need to be ch…

gh-105184: document that marshal functions can fail and need to be ch… · python/cpython@ee26ca1

Original file line number	Diff line number	Diff line change
`@@ -25,12 +25,16 @@ unmarshalling. Version 2 uses a binary format for floating point numbers.`
`25`	`25`	`the least-significant 32 bits of value; regardless of the size of the`
`26`	`26`	native :c:expr:`long` type. version indicates the file format.
`27`	`27`
	`28`	`+ This function can fail, in which case it sets the error indicator.`
	`29`	+ Use :c:func:`PyErr_Occurred` to check for that.
`28`	`30`
`29`	`31`	`.. c:function:: void PyMarshal_WriteObjectToFile(PyObject value, FILE file, int version)`
`30`	`32`
`31`	`33`	`Marshal a Python object, value, to file.`
`32`	`34`	`version indicates the file format.`
`33`	`35`
	`36`	`+ This function can fail, in which case it sets the error indicator.`
	`37`	+ Use :c:func:`PyErr_Occurred` to check for that.
`34`	`38`
`35`	`39`	`.. c:function:: PyObject* PyMarshal_WriteObjectToString(PyObject *value, int version)`
`36`	`40`