Don't expand typedefed function parameter types.

Closes rust-lang#212

Author: Yamakaky

Changelog.md

@@ -17,6 +17,7 @@ This project adheres to [Semantic Versioning](http://semver.org/).
 ### Changed
 - Use `clang_sys` instead of the internal ffi
 - Use `[type; 0]` for the incomplete and dependent sized array
+- Don't expand typedefed function parameter types (#212)
 
 ### Fixed
 - Fix build on OSX

src/parser.rs

@@ -157,9 +157,6 @@ fn get_abi(cc: CXCallingConv) -> abi::Abi {
 fn conv_ptr_ty(ctx: &mut ClangParserCtx, ty: &cx::Type, cursor: &Cursor, layout: Layout) -> il::Type {
     let is_const = ty.is_const();
     match ty.kind() {
-        CXTypeKind::Void => {
-            TPtr(Box::new(TVoid), is_const, layout)
-        }
         CXTypeKind::Unexposed |
         CXTypeKind::FunctionProto |
         CXTypeKind::FunctionNoProto => {
@@ -176,16 +173,6 @@ fn conv_ptr_ty(ctx: &mut ClangParserCtx, ty: &cx::Type, cursor: &Cursor, layout:
                 TPtr(Box::new(TVoid), ty.is_const(), layout)
             }
         }
-        CXTypeKind::Typedef => {
-            let decl = ty.declaration();
-            let def_ty = decl.typedef_type();
-            if def_ty.kind() == CXTypeKind::FunctionProto ||
-               def_ty.kind() == CXTypeKind::FunctionNoProto {
-                TPtr(Box::new(conv_ptr_ty(ctx, &def_ty, cursor, layout)), is_const, layout)
-            } else {
-                TPtr(Box::new(conv_ty(ctx, ty, cursor)), is_const, layout)
-            }
-        }
         _ => TPtr(Box::new(conv_ty(ctx, ty, cursor)), is_const, layout),
     }
 }