diff --git a/src/array.rs b/src/array.rs
index 972e502..831f8c7 100644
--- a/src/array.rs
+++ b/src/array.rs
@@ -28,6 +28,7 @@ pub type CFArrayCopyDescriptionCallBack = *const u8;
 pub type CFArrayEqualCallBack = *const u8;
 
 #[allow(dead_code)]
+#[repr(C)]
 pub struct CFArrayCallBacks {
     version: CFIndex,
     retain: CFArrayRetainCallBack,
@@ -36,6 +37,7 @@ pub struct CFArrayCallBacks {
     equal: CFArrayEqualCallBack,
 }
 
+#[repr(C)]
 struct __CFArray;
 
 pub type CFArrayRef = *const __CFArray;
diff --git a/src/base.rs b/src/base.rs
index 83b020b..ecd1e79 100644
--- a/src/base.rs
+++ b/src/base.rs
@@ -34,6 +34,7 @@ impl CFIndexConvertible for uint {
 pub type CFOptionFlags = u32;
 
 #[allow(dead_code)]
+#[repr(C)]
 pub struct CFRange {
     location: CFIndex,
     length: CFIndex
@@ -48,10 +49,12 @@ impl CFRange {
     }
 }
 
+#[repr(C)]
 struct __CFAllocator;
 
 pub type CFAllocatorRef = *const __CFAllocator;
 
+#[repr(C)]
 struct __CFNull;
 
 pub type CFNullRef = *const __CFNull;
@@ -60,6 +63,7 @@ pub type CFHashCode = c_ulong;
 
 pub type CFTypeID = c_ulong;
 
+#[repr(C)]
 struct __CFType;
 
 pub type CFTypeRef = *const __CFType;
diff --git a/src/boolean.rs b/src/boolean.rs
index 38fea3d..0f00a16 100644
--- a/src/boolean.rs
+++ b/src/boolean.rs
@@ -14,6 +14,7 @@ use std::mem;
 
 pub type Boolean = u32;
 
+#[repr(C)]
 struct __CFBoolean;
 
 pub type CFBooleanRef = *const __CFBoolean;
diff --git a/src/bundle.rs b/src/bundle.rs
index 54aca00..ea3b4ab 100644
--- a/src/bundle.rs
+++ b/src/bundle.rs
@@ -15,6 +15,7 @@ use std::mem;
 use string::CFStringRef;
 use libc::c_void;
 
+#[repr(C)]
 struct __CFBundle;
 
 pub type CFBundleRef = *const __CFBundle;
diff --git a/src/data.rs b/src/data.rs
index 2a6fabc..b889d38 100644
--- a/src/data.rs
+++ b/src/data.rs
@@ -14,6 +14,7 @@ use base::{CFTypeID, CFTypeRef, TCFType, kCFAllocatorDefault};
 
 use std::mem;
 
+#[repr(C)]
 struct __CFData;
 
 pub type CFDataRef = *const __CFData;
diff --git a/src/dictionary.rs b/src/dictionary.rs
index a4b3176..5b17bdf 100644
--- a/src/dictionary.rs
+++ b/src/dictionary.rs
@@ -25,6 +25,7 @@ pub type CFDictionaryReleaseCallBack = *const u8;
 pub type CFDictionaryRetainCallBack = *const u8;
 
 #[allow(dead_code)]
+#[repr(C)]
 pub struct CFDictionaryKeyCallBacks {
     version: CFIndex,
     retain: CFDictionaryRetainCallBack,
@@ -35,6 +36,7 @@ pub struct CFDictionaryKeyCallBacks {
 }
 
 #[allow(dead_code)]
+#[repr(C)]
 pub struct CFDictionaryValueCallBacks {
     version: CFIndex,
     retain: CFDictionaryRetainCallBack,
@@ -43,6 +45,7 @@ pub struct CFDictionaryValueCallBacks {
     equal: CFDictionaryEqualCallBack
 }
 
+#[repr(C)]
 struct __CFDictionary;
 
 pub type CFDictionaryRef = *const __CFDictionary;
diff --git a/src/lib.rs b/src/lib.rs
index d1f3eed..d06c9eb 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -10,7 +10,7 @@
 #![crate_name = "core_foundation"]
 #![crate_type = "rlib"]
 
-#![allow(non_snake_case_functions)]
+#![allow(non_snake_case)]
 
 extern crate libc;
 
diff --git a/src/number.rs b/src/number.rs
index f0d3a46..6b27fe2 100644
--- a/src/number.rs
+++ b/src/number.rs
@@ -9,7 +9,7 @@
 
 //! Immutable numbers.
 
-#![allow(non_uppercase_statics)]
+#![allow(non_upper_case_globals)]
 
 use base::{CFAllocatorRef, CFRelease, CFRetain, CFTypeID, CFTypeRef};
 use base::{TCFType, kCFAllocatorDefault};
@@ -38,6 +38,7 @@ static kCFNumberFloat64Type:   CFNumberType = 6;
 // static kCFNumberCGFloatType:   CFNumberType = 16;
 // static kCFNumberMaxType:       CFNumberType = 16;
 
+#[repr(C)]
 struct __CFNumber;
 
 pub type CFNumberRef = *const __CFNumber;
diff --git a/src/set.rs b/src/set.rs
index 61b72ee..d053277 100644
--- a/src/set.rs
+++ b/src/set.rs
@@ -22,6 +22,7 @@ pub type CFSetEqualCallBack = *const u8;
 pub type CFSetHashCallBack = *const u8;
 
 #[allow(dead_code)]
+#[repr(C)]
 pub struct CFSetCallBacks {
     version: CFIndex,
     retain: CFSetRetainCallBack,
@@ -31,6 +32,7 @@ pub struct CFSetCallBacks {
     hash: CFSetHashCallBack,
 }
 
+#[repr(C)]
 struct __CFSet;
 
 pub type CFSetRef = *const __CFSet;
diff --git a/src/string.rs b/src/string.rs
index bea8d18..1a7bcb4 100644
--- a/src/string.rs
+++ b/src/string.rs
@@ -9,7 +9,7 @@
 
 //! Immutable strings.
 
-#![allow(non_uppercase_statics)]
+#![allow(non_upper_case_globals)]
 
 use base::{Boolean, CFAllocatorRef, CFIndex, CFIndexConvertible, CFOptionFlags, CFRange};
 use base::{CFRelease, CFRetain, CFTypeID, CFTypeRef, TCFType};
@@ -198,6 +198,7 @@ type CFStringEncodings = CFIndex;
 //static kCFStringEncodingUTF7_IMAP: CFStringEncoding = 0x0A10;
 //static kCFStringEncodingShiftJIS_X0213_00: CFStringEncoding = 0x0628; /* Deprecated */
 
+#[repr(C)]
 struct __CFString;
 
 pub type CFStringRef = *const __CFString;
diff --git a/src/url.rs b/src/url.rs
index fe37e59..cfe6e2f 100644
--- a/src/url.rs
+++ b/src/url.rs
@@ -9,7 +9,7 @@
 
 //! A URL type for Core Foundation.
 
-#![allow(non_uppercase_statics)]
+#![allow(non_upper_case_globals)]
 
 use base::{CFOptionFlags, CFRelease, CFRetain, CFTypeID, CFTypeRef, TCFType};
 use string::{CFString, CFStringRef};
@@ -17,6 +17,7 @@ use string::{CFString, CFStringRef};
 use std::fmt;
 use std::mem;
 
+#[repr(C)]
 struct __CFURL;
 
 pub type CFURLRef = *const __CFURL;