gh-105673: Fix uninitialized warning in sysmodule.c (#105674)

sobolevn · web-flow · commit a8d69fe92c65 · 2023-06-12T08:47:56.000Z
In sys_add_xoption(), 'value' may be uninitialized for some error paths.
diff --git a/Python/sysmodule.c b/Python/sysmodule.c
@@ -3375,7 +3375,7 @@ _PySys_InitCore(PyThreadState *tstate, PyObject *sysdict)
 static int
 sys_add_xoption(PyObject *opts, const wchar_t *s)
 {
-    PyObject *name, *value;
+    PyObject *name, *value = NULL;
 
     const wchar_t *name_end = wcschr(s, L'=');
     if (!name_end) {

Original file line number	Diff line number	Diff line change
`@@ -3375,7 +3375,7 @@ _PySys_InitCore(PyThreadState tstate, PyObject sysdict)`
`3375`	`3375`	`static int`
`3376`	`3376`	`sys_add_xoption(PyObject opts, const wchar_t s)`
`3377`	`3377`	`{`
`3378`		`- PyObject name, value;`
	`3378`	`+ PyObject name, value = NULL;`
`3379`	`3379`
`3380`	`3380`	`const wchar_t *name_end = wcschr(s, L'=');`
`3381`	`3381`	`if (!name_end) {`