diff --git a/src/libcore/array.rs b/src/libcore/array.rs
index 3d24f8902bd83827be8aee45f393f9cf9f9e33a6..28f1da27bdb57670214cd4ef4b8af871cb3c3c65 100644
--- a/src/libcore/array.rs
+++ b/src/libcore/array.rs
@@ -185,6 +185,7 @@ fn hash<H: hash::Hasher>(&self, state: &mut H) {
 
             #[stable(feature = "rust1", since = "1.0.0")]
             impl<T: fmt::Debug> fmt::Debug for [T; $N] {
+                #[inline]
                 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
                     fmt::Debug::fmt(&&self[..], f)
                 }
diff --git a/src/libcore/fmt/float.rs b/src/libcore/fmt/float.rs
index 03e7a9a49d8a763da0c6772b678ab23cba06ceb6..24ffe8c688885b5460aafdbb2ffb71b2becef429 100644
--- a/src/libcore/fmt/float.rs
+++ b/src/libcore/fmt/float.rs
@@ -125,6 +125,7 @@ fn float_to_exponential_common<T>(fmt: &mut Formatter, num: &T, upper: bool) ->
     ($ty:ident) => (
         #[stable(feature = "rust1", since = "1.0.0")]
         impl Debug for $ty {
+            #[inline]
             fn fmt(&self, fmt: &mut Formatter) -> Result {
                 float_to_decimal_common(fmt, self, true, 1)
             }
diff --git a/src/libcore/fmt/mod.rs b/src/libcore/fmt/mod.rs
index 65aacb23bd76813511c1381d85f73b17b1a1a344..b4d23d153d80098e832c97de61bde79045912a9d 100644
--- a/src/libcore/fmt/mod.rs
+++ b/src/libcore/fmt/mod.rs
@@ -1558,10 +1558,12 @@ fn fmt(&self, f: &mut Formatter) -> Result {
         $(
         #[stable(feature = "rust1", since = "1.0.0")]
         impl<'a, T: ?Sized + $tr> $tr for &'a T {
+            #[inline]
             fn fmt(&self, f: &mut Formatter) -> Result { $tr::fmt(&**self, f) }
         }
         #[stable(feature = "rust1", since = "1.0.0")]
         impl<'a, T: ?Sized + $tr> $tr for &'a mut T {
+            #[inline]
             fn fmt(&self, f: &mut Formatter) -> Result { $tr::fmt(&**self, f) }
         }
         )*
@@ -1586,6 +1588,7 @@ fn fmt(&self, _: &mut Formatter) -> Result {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl Debug for bool {
+    #[inline]
     fn fmt(&self, f: &mut Formatter) -> Result {
         Display::fmt(self, f)
     }
@@ -1600,6 +1603,7 @@ fn fmt(&self, f: &mut Formatter) -> Result {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl Debug for str {
+    #[inline]
     fn fmt(&self, f: &mut Formatter) -> Result {
         f.write_char('"')?;
         let mut from = 0;
@@ -1628,6 +1632,7 @@ fn fmt(&self, f: &mut Formatter) -> Result {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl Debug for char {
+    #[inline]
     fn fmt(&self, f: &mut Formatter) -> Result {
         f.write_char('\'')?;
         for c in self.escape_debug() {
@@ -1701,10 +1706,12 @@ fn fmt(&self, f: &mut Formatter) -> Result {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<T: ?Sized> Debug for *const T {
+    #[inline]
     fn fmt(&self, f: &mut Formatter) -> Result { Pointer::fmt(self, f) }
 }
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<T: ?Sized> Debug for *mut T {
+    #[inline]
     fn fmt(&self, f: &mut Formatter) -> Result { Pointer::fmt(self, f) }
 }
 
@@ -1718,6 +1725,7 @@ fn fmt(&self, f: &mut Formatter) -> Result { Pointer::fmt(self, f) }
         #[stable(feature = "rust1", since = "1.0.0")]
         impl<$($name:Debug),*> Debug for ($($name,)*) where last_type!($($name,)+): ?Sized {
             #[allow(non_snake_case, unused_assignments, deprecated)]
+            #[inline]
             fn fmt(&self, f: &mut Formatter) -> Result {
                 let mut builder = f.debug_tuple("");
                 let ($(ref $name,)*) = *self;
@@ -1741,6 +1749,7 @@ fn fmt(&self, f: &mut Formatter) -> Result {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<T: Debug> Debug for [T] {
+    #[inline]
     fn fmt(&self, f: &mut Formatter) -> Result {
         f.debug_list().entries(self.iter()).finish()
     }
@@ -1748,6 +1757,7 @@ fn fmt(&self, f: &mut Formatter) -> Result {
 
 #[stable(feature = "rust1", since = "1.0.0")]
 impl Debug for () {
+    #[inline]
     fn fmt(&self, f: &mut Formatter) -> Result {
         f.pad("()")
     }
diff --git a/src/libcore/fmt/num.rs b/src/libcore/fmt/num.rs
index ee989854a3772e29362d6dc94250bb18b94a7b73..2992e7cf8db341cf0fde7730212752b19ed70096 100644
--- a/src/libcore/fmt/num.rs
+++ b/src/libcore/fmt/num.rs
@@ -157,6 +157,7 @@ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
     ($T:ident) => {
         #[stable(feature = "rust1", since = "1.0.0")]
         impl fmt::Debug for $T {
+            #[inline]
             fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
                 fmt::Display::fmt(self, f)
             }
diff --git a/src/libcore/ptr.rs b/src/libcore/ptr.rs
index fab5832d905df8262bfbaa85971ef913e8711844..3e162afd6490940913beef63ad28fa4c416f1ea6 100644
--- a/src/libcore/ptr.rs
+++ b/src/libcore/ptr.rs
@@ -2202,6 +2202,7 @@ fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
 
         #[stable(feature = "fnptr_impls", since = "1.4.0")]
         impl<Ret, $($Arg),*> fmt::Debug for $FnTy {
+            #[inline]
             fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
                 fmt::Pointer::fmt(&(*self as *const ()), f)
             }