treat incomplete array as zero length array

fix issue #455

Author: flier

src/ir/ty.rs

@@ -816,15 +816,22 @@ impl Type {
             }
             // XXX DependentSizedArray is wrong
             CXType_VariableArray |
-            CXType_DependentSizedArray |
-            CXType_IncompleteArray => {
+            CXType_DependentSizedArray => {
                 let inner = Item::from_ty(ty.elem_type().as_ref().unwrap(),
                                           location,
                                           parent_id,
                                           ctx)
                     .expect("Not able to resolve array element?");
                 TypeKind::Pointer(inner)
             }
+            CXType_IncompleteArray => {
+                let inner = Item::from_ty(ty.elem_type().as_ref().unwrap(),
+                                          location,
+                                          parent_id,
+                                          ctx)
+                    .expect("Not able to resolve array element?");
+                TypeKind::Array(inner, 0)
+            }
             CXType_FunctionNoProto |
             CXType_FunctionProto => {
                 let signature = try!(FunctionSig::from_ty(ty,

tests/expectations/tests/class.rs

@@ -32,6 +32,8 @@ impl <T> ::std::fmt::Debug for __BindgenUnionField<T> {
 pub struct C {
     pub a: ::std::os::raw::c_int,
     pub big_array: [::std::os::raw::c_char; 33usize],
+    pub zero_length_array: [::std::os::raw::c_char; 0usize],
+    pub incomplete_array: [::std::os::raw::c_char; 0usize],
 }
 #[test]
 fn bindgen_test_layout_C() {

tests/expectations/tests/var-tracing.rs

@@ -36,7 +36,7 @@ pub struct Baz {
 }
 extern "C" {
     #[link_name = "_ZN3Baz3FOOE"]
-    pub static mut Baz_FOO: *const Bar;
+    pub static mut Baz_FOO: [Bar; 0usize];
 }
 #[test]
 fn bindgen_test_layout_Baz() {

tests/headers/class.hpp

@@ -2,6 +2,8 @@ class C {
     int a;
     // More than rust limits (32)
     char big_array[33];
+    char zero_length_array[0];
+    char incomplete_array[];
 };
 
 class WithDtor {