Fix warning for uninitialized va_list variable.

ktopley-apple · ktopley-apple · commit fc08a12a61e0 · 2018-07-17T08:21:39.000-07:00
rdar://problem/40626177
diff --git a/stdlib/public/SDK/os/os.m b/stdlib/public/SDK/os/os.m
@@ -161,6 +161,6 @@
     const char * _Nonnull spnm,
     os_signpost_id_t spid)
 {
-  va_list x;
+  static va_list x;
   _swift_os_signpost_with_format(dso, ra, h, spty, spnm, spid, NULL, x);
 }

Original file line number	Diff line number	Diff line change
`@@ -161,6 +161,6 @@`
`161`	`161`	`const char * _Nonnull spnm,`
`162`	`162`	`os_signpost_id_t spid)`
`163`	`163`	`{`
`164`		`- va_list x;`
	`164`	`+ static va_list x;`
`165`	`165`	`_swift_os_signpost_with_format(dso, ra, h, spty, spnm, spid, NULL, x);`
`166`	`166`	`}`