diff --git a/src/bindgen/parser.rs b/src/bindgen/parser.rs
index f40b639..edd16b3 100644
--- a/src/bindgen/parser.rs
+++ b/src/bindgen/parser.rs
@@ -570,7 +570,7 @@ impl Parse {
             return;
         }
 
-        if item.is_no_mangle() && (abi.is_omitted() || abi.is_c()) {
+        if item.vis == syn::Visibility::Public && item.is_no_mangle() && (abi.is_omitted() || abi.is_c()) {
             match Function::load(item.ident.to_string(), decl, false, &item.attrs, mod_cfg) {
                 Ok(func) => {
                     info!("Take {}::{}.", crate_name, &item.ident);
@@ -582,6 +582,12 @@ impl Parse {
                 }
             }
         } else {
+            if item.vis != syn::Visibility::Public {
+                warn!(
+                    "Skip {}::{} - (not `pub`).",
+                    crate_name, &item.ident
+                );
+            }
             if (abi.is_omitted() || abi.is_c()) && !item.is_no_mangle() {
                 warn!(
                     "Skip {}::{} - (`extern` but not `no_mangle`).",
@@ -649,14 +655,29 @@ impl Parse {
 
         let static_name = item.ident.to_string();
 
-        match Static::load(static_name.clone(), ty, mutability, &item.attrs, mod_cfg) {
-            Ok(constant) => {
-                info!("Take {}::{}.", crate_name, &item.ident);
+        if item.vis == syn::Visibility::Public && item.is_no_mangle() {
+            match Static::load(static_name.clone(), ty, mutability, &item.attrs, mod_cfg) {
+                Ok(constant) => {
+                    info!("Take {}::{}.", crate_name, &item.ident);
 
-                self.globals.try_insert(constant);
+                    self.globals.try_insert(constant);
+                }
+                Err(msg) => {
+                    warn!("Skip {}::{} - ({})", crate_name, &item.ident, msg);
+                }
             }
-            Err(msg) => {
-                warn!("Skip {}::{} - ({})", crate_name, &item.ident, msg);
+        } else {
+            if item.vis != syn::Visibility::Public {
+                warn!(
+                    "Skip {}::{} - (not `pub`).",
+                    crate_name, &item.ident
+                );
+            }
+            if !item.is_no_mangle() {
+                warn!(
+                    "Skip {}::{} - (not `no_mangle`).",
+                    crate_name, &item.ident
+                );
             }
         }
     }
diff --git a/tests/rust/alias.rs b/tests/rust/alias.rs
index 435e707..86e3e00 100644
--- a/tests/rust/alias.rs
+++ b/tests/rust/alias.rs
@@ -24,8 +24,9 @@ type Unit = i32;
 type SpecialStatus = Status;
 
 #[no_mangle]
-extern "C" fn root(x: IntFoo,
-                   y: DoubleFoo,
-                   z: Unit,
-                   w: SpecialStatus)
-{ }
+pub extern "C" fn root(
+    x: IntFoo,
+    y: DoubleFoo,
+    z: Unit,
+    w: SpecialStatus
+) { }
diff --git a/tests/rust/annotation.rs b/tests/rust/annotation.rs
index b078921..a4c08ea 100644
--- a/tests/rust/annotation.rs
+++ b/tests/rust/annotation.rs
@@ -16,7 +16,8 @@ enum C {
 }
 
 #[no_mangle]
-extern "C" fn root(x: A,
-                   y: B,
-                   z: C)
-{ }
+pub extern "C" fn root(
+    x: A,
+    y: B,
+    z: C
+) { }
diff --git a/tests/rust/cdecl.rs b/tests/rust/cdecl.rs
index ceae1ce..d8b34cb 100644
--- a/tests/rust/cdecl.rs
+++ b/tests/rust/cdecl.rs
@@ -16,22 +16,23 @@ type M = [fn (i32, i32) -> bool; 16];
 type N = [fn (i32, i32) -> (); 16];
 
 #[no_mangle]
-extern "C" fn O() -> fn ()
+pub extern "C" fn O() -> fn ()
 { }
 
 #[no_mangle]
-extern "C" fn root(a: A,
-                   b: B,
-                   c: C,
-                   d: D,
-                   e: E,
-                   f: F,
-                   g: G,
-                   h: H,
-                   i: I,
-                   j: J,
-                   k: K,
-                   l: L,
-                   m: M,
-                   n: N)
-{ }
+pub extern "C" fn root(
+    a: A,
+    b: B,
+    c: C,
+    d: D,
+    e: E,
+    f: F,
+    g: G,
+    h: H,
+    i: I,
+    j: J,
+    k: K,
+    l: L,
+    m: M,
+    n: N
+) { }
diff --git a/tests/rust/cfg-2.rs b/tests/rust/cfg-2.rs
index e65d2cd..515b3f3 100644
--- a/tests/rust/cfg-2.rs
+++ b/tests/rust/cfg-2.rs
@@ -22,5 +22,5 @@ struct Root {
 }
 
 #[no_mangle]
-extern "C" fn root(a: Root)
+pub extern "C" fn root(a: Root)
 { }
diff --git a/tests/rust/cfg.rs b/tests/rust/cfg.rs
index fd6d9b8..ed81823 100644
--- a/tests/rust/cfg.rs
+++ b/tests/rust/cfg.rs
@@ -32,10 +32,10 @@ struct BarHandle {
 
 #[cfg(all(unix, x11))]
 #[no_mangle]
-extern "C" fn root(a: FooHandle)
+pub extern "C" fn root(a: FooHandle)
 { }
 
 #[cfg(any(windows, target_pointer_width="32"))]
 #[no_mangle]
-extern "C" fn root(a: BarHandle)
+pub extern "C" fn root(a: BarHandle)
 { }
diff --git a/tests/rust/constant.rs b/tests/rust/constant.rs
index 3caab96..ee67081 100644
--- a/tests/rust/constant.rs
+++ b/tests/rust/constant.rs
@@ -8,4 +8,4 @@ struct Foo {
 }
 
 #[no_mangle]
-extern "C" fn root(x: Foo) { }
+pub extern "C" fn root(x: Foo) { }
diff --git a/tests/rust/enum.rs b/tests/rust/enum.rs
index 1e91d9e..03b0d48 100644
--- a/tests/rust/enum.rs
+++ b/tests/rust/enum.rs
@@ -44,10 +44,11 @@ enum E {
 }
 
 #[no_mangle]
-extern "C" fn root(o: *mut Opaque,
-                   a: A,
-                   b: B,
-                   c: C,
-                   d: D,
-                   e: E)
-{ }
+pub extern "C" fn root(
+    o: *mut Opaque,
+    a: A,
+    b: B,
+    c: C,
+    d: D,
+    e: E
+) { }
diff --git a/tests/rust/euclid.rs b/tests/rust/euclid.rs
index 25a2d0c..d3c2940 100644
--- a/tests/rust/euclid.rs
+++ b/tests/rust/euclid.rs
@@ -55,26 +55,27 @@ type LayoutPoint2D = TypedPoint2D<f32, LayoutUnit>;
 type LayoutRect = TypedRect<f32, LayoutUnit>;
 
 #[no_mangle]
-extern "C" fn root(length_a: TypedLength<f32, UnknownUnit>,
-                   length_b: TypedLength<f32, LayoutUnit>,
-                   length_c: Length<f32>,
-                   length_d: LayoutLength,
-                   side_offsets_a: TypedSideOffsets2D<f32, UnknownUnit>,
-                   side_offsets_b: TypedSideOffsets2D<f32, LayoutUnit>,
-                   side_offsets_c: SideOffsets2D<f32>,
-                   side_offsets_d: LayoutSideOffsets2D,
-                   size_a: TypedSize2D<f32, UnknownUnit>,
-                   size_b: TypedSize2D<f32, LayoutUnit>,
-                   size_c: Size2D<f32>,
-                   size_d: LayoutSize2D,
-                   point_a: TypedPoint2D<f32, UnknownUnit>,
-                   point_b: TypedPoint2D<f32, LayoutUnit>,
-                   point_c: Point2D<f32>,
-                   point_d: LayoutPoint2D,
-                   rect_a: TypedRect<f32, UnknownUnit>,
-                   rect_b: TypedRect<f32, LayoutUnit>,
-                   rect_c: Rect<f32>,
-                   rect_d: LayoutRect,
-                   transform_a: TypedTransform2D<f32, UnknownUnit, LayoutUnit>,
-                   transform_b: TypedTransform2D<f32, LayoutUnit, UnknownUnit>) {
-}
+pub extern "C" fn root(
+    length_a: TypedLength<f32, UnknownUnit>,
+    length_b: TypedLength<f32, LayoutUnit>,
+    length_c: Length<f32>,
+    length_d: LayoutLength,
+    side_offsets_a: TypedSideOffsets2D<f32, UnknownUnit>,
+    side_offsets_b: TypedSideOffsets2D<f32, LayoutUnit>,
+    side_offsets_c: SideOffsets2D<f32>,
+    side_offsets_d: LayoutSideOffsets2D,
+    size_a: TypedSize2D<f32, UnknownUnit>,
+    size_b: TypedSize2D<f32, LayoutUnit>,
+    size_c: Size2D<f32>,
+    size_d: LayoutSize2D,
+    point_a: TypedPoint2D<f32, UnknownUnit>,
+    point_b: TypedPoint2D<f32, LayoutUnit>,
+    point_c: Point2D<f32>,
+    point_d: LayoutPoint2D,
+    rect_a: TypedRect<f32, UnknownUnit>,
+    rect_b: TypedRect<f32, LayoutUnit>,
+    rect_c: Rect<f32>,
+    rect_d: LayoutRect,
+    transform_a: TypedTransform2D<f32, UnknownUnit, LayoutUnit>,
+    transform_b: TypedTransform2D<f32, LayoutUnit, UnknownUnit>
+) { }
diff --git a/tests/rust/extern-2.rs b/tests/rust/extern-2.rs
index 56eab18..92a9c18 100644
--- a/tests/rust/extern-2.rs
+++ b/tests/rust/extern-2.rs
@@ -1,11 +1,11 @@
 #[no_mangle]
-extern "C" fn first()
+pub extern "C" fn first()
 { }
 
 #[no_mangle]
-extern fn second()
+pub extern fn second()
 { }
 
 #[no_mangle]
-fn third()
+pub fn third()
 { }
diff --git a/tests/rust/fail-str.rs b/tests/rust/fail-str.rs
index d5c2008..1306859 100644
--- a/tests/rust/fail-str.rs
+++ b/tests/rust/fail-str.rs
@@ -6,6 +6,7 @@ struct Foo<'a> {
 const BAR: &'static str = "";
 
 #[no_mangle]
-extern "C" fn root(a: Foo<'static>,
-                   b: &'static str)
-{ }
+pub extern "C" fn root(
+	a: Foo<'static>,
+    b: &'static str
+) { }
diff --git a/tests/rust/inner_mod.rs b/tests/rust/inner_mod.rs
index 8b65a2a..89411ad 100644
--- a/tests/rust/inner_mod.rs
+++ b/tests/rust/inner_mod.rs
@@ -6,5 +6,5 @@ mod foo {
 }
 
 #[no_mangle]
-extern "C" fn root(a: foo::Foo)
+pub extern "C" fn root(a: foo::Foo)
 { }
diff --git a/tests/rust/monomorph-1.rs b/tests/rust/monomorph-1.rs
index 01d9caa..a75cc23 100644
--- a/tests/rust/monomorph-1.rs
+++ b/tests/rust/monomorph-1.rs
@@ -16,12 +16,13 @@ struct Tuple<T, E> {
 type Indirection<T> = Tuple<T, f32>;
 
 #[no_mangle]
-extern "C" fn root(a: Foo<i32>,
-                   b: Foo<f32>,
-                   c: Bar<f32>,
-                   d: Foo<Bar<f32>>,
-                   e: Bar<Foo<f32>>,
-                   f: Bar<Bar<f32>>,
-                   g: Tuple<Foo<f32>, f32>,
-                   h: Indirection<f32>) {
-}
+pub extern "C" fn root(
+    a: Foo<i32>,
+    b: Foo<f32>,
+    c: Bar<f32>,
+    d: Foo<Bar<f32>>,
+    e: Bar<Foo<f32>>,
+    f: Bar<Bar<f32>>,
+    g: Tuple<Foo<f32>, f32>,
+    h: Indirection<f32>
+) { }
diff --git a/tests/rust/monomorph-2.rs b/tests/rust/monomorph-2.rs
index ed62d78..f81ea5b 100644
--- a/tests/rust/monomorph-2.rs
+++ b/tests/rust/monomorph-2.rs
@@ -9,7 +9,7 @@ struct A;
 struct B;
 
 #[no_mangle]
-extern "C" fn foo(a: List<A>) { }
+pub extern "C" fn foo(a: List<A>) { }
 
 #[no_mangle]
-extern "C" fn bar(b: List<B>) { }
+pub extern "C" fn bar(b: List<B>) { }
diff --git a/tests/rust/monomorph-3.rs b/tests/rust/monomorph-3.rs
index 23b8b2a..b1d69e4 100644
--- a/tests/rust/monomorph-3.rs
+++ b/tests/rust/monomorph-3.rs
@@ -16,12 +16,13 @@ union Tuple<T, E> {
 type Indirection<T> = Tuple<T, f32>;
 
 #[no_mangle]
-extern "C" fn root(a: Foo<i32>,
-                   b: Foo<f32>,
-                   c: Bar<f32>,
-                   d: Foo<Bar<f32>>,
-                   e: Bar<Foo<f32>>,
-                   f: Bar<Bar<f32>>,
-                   g: Tuple<Foo<f32>, f32>,
-                   h: Indirection<f32>) {
-}
+pub extern "C" fn root(
+    a: Foo<i32>,
+    b: Foo<f32>,
+    c: Bar<f32>,
+    d: Foo<Bar<f32>>,
+    e: Bar<Foo<f32>>,
+    f: Bar<Bar<f32>>,
+    g: Tuple<Foo<f32>, f32>,
+    h: Indirection<f32>
+) { }
diff --git a/tests/rust/simplify-option-ptr.rs b/tests/rust/simplify-option-ptr.rs
index dc98146..b6e3f5b 100644
--- a/tests/rust/simplify-option-ptr.rs
+++ b/tests/rust/simplify-option-ptr.rs
@@ -16,8 +16,9 @@ union Bar {
 }
 
 #[no_mangle]
-extern "C" fn root(a: Option<&Opaque>,
-                   b: Option<&mut Opaque>,
-                   c: Foo,
-                   d: Bar)
-{ }
+pub extern "C" fn root(
+	a: Option<&Opaque>,
+    b: Option<&mut Opaque>,
+    c: Foo,
+    d: Bar
+) { }
diff --git a/tests/rust/static.rs b/tests/rust/static.rs
index 0f8f6a9..2a81b15 100644
--- a/tests/rust/static.rs
+++ b/tests/rust/static.rs
@@ -1,5 +1,7 @@
-static NUMBER: i32 = 10;
-static STRING: &'static libc::c_char = "hello world";
+#[no_mangle]
+pub static NUMBER: i32 = 10;
+#[no_mangle]
+pub static STRING: &'static libc::c_char = "hello world";
 
 #[repr(C)]
 struct Foo {
@@ -8,8 +10,10 @@ struct Foo {
 struct Bar {
 }
 
-static mut FOO: Foo = Foo { };
-static BAR: Bar = Bar { };
+#[no_mangle]
+pub static mut FOO: Foo = Foo { };
+#[no_mangle]
+pub static BAR: Bar = Bar { };
 
 #[no_mangle]
-extern "C" fn root() { }
+pub extern "C" fn root() { }
diff --git a/tests/rust/std_lib.rs b/tests/rust/std_lib.rs
index 01d5abb..05e0f2a 100644
--- a/tests/rust/std_lib.rs
+++ b/tests/rust/std_lib.rs
@@ -1,5 +1,6 @@
 #[no_mangle]
-extern "C" fn root(a: &Vec<String>,
-                   b: &Option<i32>,
-                   c: &Result<i32, String>)
-{ }
+pub extern "C" fn root(
+	a: &Vec<String>,
+    b: &Option<i32>,
+    c: &Result<i32, String>
+) { }
diff --git a/tests/rust/struct.rs b/tests/rust/struct.rs
index 649477f..5fb9f18 100644
--- a/tests/rust/struct.rs
+++ b/tests/rust/struct.rs
@@ -28,9 +28,10 @@ struct TupleRenamed(i32, f32);
 struct TupleNamed(i32, f32);
 
 #[no_mangle]
-extern "C" fn root(a: *mut Opaque,
-                   b: Normal,
-                   c: NormalWithZST,
-                   d: TupleRenamed,
-                   e: TupleNamed)
-{ }
+pub extern "C" fn root(
+    a: *mut Opaque,
+    b: Normal,
+    c: NormalWithZST,
+    d: TupleRenamed,
+    e: TupleNamed
+) { }
diff --git a/tests/rust/typedef.rs b/tests/rust/typedef.rs
index 7162f47..bf7ceb8 100644
--- a/tests/rust/typedef.rs
+++ b/tests/rust/typedef.rs
@@ -7,5 +7,5 @@ struct Foo<T, U> {
 type IntFoo<T> = Foo<i32, T>;
 
 #[no_mangle]
-extern "C" fn root(a: IntFoo<i32>)
+pub extern "C" fn root(a: IntFoo<i32>)
 { }
diff --git a/tests/rust/union.rs b/tests/rust/union.rs
index 7db29c3..b76f98a 100644
--- a/tests/rust/union.rs
+++ b/tests/rust/union.rs
@@ -20,7 +20,8 @@ union NormalWithZST {
 }
 
 #[no_mangle]
-extern "C" fn root(a: *mut Opaque,
-                   b: Normal,
-                   c: NormalWithZST)
-{ }
+pub extern "C" fn root(
+    a: *mut Opaque,
+    b: Normal,
+    c: NormalWithZST
+) { }