Handle null ETW UserData (#182)

vvuk · web-flow · commit 9c35faf14e08 · 2024-05-07T15:08:49.000Z
diff --git a/etw-reader/src/etw_types.rs b/etw-reader/src/etw_types.rs
@@ -22,6 +22,9 @@ impl Deref for EventRecord {
 
 impl EventRecord {
     pub(crate) fn user_buffer(&self) -> &[u8] {
+        if self.UserData == std::ptr::null_mut() {
+            return &[];
+        }
         unsafe { std::slice::from_raw_parts(self.UserData as *mut _, self.UserDataLength.into()) }
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -22,6 +22,9 @@ impl Deref for EventRecord {`
`22`	`22`
`23`	`23`	`impl EventRecord {`
`24`	`24`	`pub(crate) fn user_buffer(&self) -> &[u8] {`
	`25`	`+ if self.UserData == std::ptr::null_mut() {`
	`26`	`+ return &[];`
	`27`	`+ }`
`25`	`28`	`unsafe { std::slice::from_raw_parts(self.UserData as *mut _, self.UserDataLength.into()) }`
`26`	`29`	`}`
`27`	`30`	`}`