Merge pull request #195 from alufers/fix/iterating-over-zero-endpoint…

…-descriptors fix: panic when trying to iterate over an interface with zero endpoints
a1ien · Mar 5, 2024 · aa11ec9 · aa11ec9
2 parents 15c2910 + 5e8e36e
commit aa11ec9
Showing 1 changed file with 3 additions and 5 deletions.
diff --git a/src/interface_descriptor.rs b/src/interface_descriptor.rs
@@ -101,11 +101,9 @@ impl<'a> InterfaceDescriptor<'a> {
 
     /// Returns an iterator over the interface's endpoint descriptors.
     pub fn endpoint_descriptors(&self) -> EndpointDescriptors<'a> {
-        let endpoints = unsafe {
-            slice::from_raw_parts(
-                self.descriptor.endpoint,
-                self.descriptor.bNumEndpoints as usize,
-            )
+        let endpoints = match self.descriptor.bNumEndpoints {
+            0 => &[],
+            n => unsafe { slice::from_raw_parts(self.descriptor.endpoint, n as usize) },
         };
 
         EndpointDescriptors {