diff --git a/src/libgreen/macros.rs b/src/libgreen/macros.rs
index 56dc3204da8..12def918bc9 100644
--- a/src/libgreen/macros.rs
+++ b/src/libgreen/macros.rs
@@ -13,7 +13,6 @@
 #[macro_escape];
 
 use std::fmt;
-use std::libc;
 
 // Indicates whether we should perform expensive sanity checks, including rtassert!
 // XXX: Once the runtime matures remove the `true` below to turn off rtassert, etc.
@@ -124,6 +123,7 @@ pub fn abort(msg: &str) -> ! {
     abort();
 
     fn abort() -> ! {
-        unsafe { libc::abort() }
+        use std::unstable::intrinsics;
+        unsafe { intrinsics::abort() }
     }
 }
diff --git a/src/libstd/at_vec.rs b/src/libstd/at_vec.rs
index aedda59bbac..18cb470db4d 100644
--- a/src/libstd/at_vec.rs
+++ b/src/libstd/at_vec.rs
@@ -68,6 +68,7 @@ pub fn append<T:Clone>(lhs: @[T], rhs: &[T]) -> @[T] {
 
 
 /// Apply a function to each element of a vector and return the results
+#[inline]
 pub fn map<T, U>(v: &[T], f: |x: &T| -> U) -> @[U] {
     build(Some(v.len()), |push| {
         for elem in v.iter() {
@@ -82,6 +83,7 @@ pub fn map<T, U>(v: &[T], f: |x: &T| -> U) -> @[U] {
  * Creates an immutable vector of size `n_elts` and initializes the elements
  * to the value returned by the function `op`.
  */
+#[inline]
 pub fn from_fn<T>(n_elts: uint, op: |uint| -> T) -> @[T] {
     build(Some(n_elts), |push| {
         let mut i: uint = 0u;
@@ -95,6 +97,7 @@ pub fn from_fn<T>(n_elts: uint, op: |uint| -> T) -> @[T] {
  * Creates an immutable vector of size `n_elts` and initializes the elements
  * to the value `t`.
  */
+#[inline]
 pub fn from_elem<T:Clone>(n_elts: uint, t: T) -> @[T] {
     build(Some(n_elts), |push| {
         let mut i: uint = 0u;
@@ -109,6 +112,7 @@ pub fn from_elem<T:Clone>(n_elts: uint, t: T) -> @[T] {
  * Creates and initializes an immutable managed vector by moving all the
  * elements from an owned vector.
  */
+#[inline]
 pub fn to_managed_move<T>(v: ~[T]) -> @[T] {
     let mut av = @[];
     unsafe {
@@ -124,6 +128,7 @@ pub fn to_managed_move<T>(v: ~[T]) -> @[T] {
  * Creates and initializes an immutable managed vector by copying all the
  * elements of a slice.
  */
+#[inline]
 pub fn to_managed<T:Clone>(v: &[T]) -> @[T] {
     from_fn(v.len(), |i| v[i].clone())
 }
@@ -135,6 +140,7 @@ fn clone(&self) -> @[T] {
 }
 
 impl<A> FromIterator<A> for @[A] {
+    #[inline]
     fn from_iterator<T: Iterator<A>>(iterator: &mut T) -> @[A] {
         let (lower, _) = iterator.size_hint();
         build(Some(lower), |push| {
@@ -216,6 +222,7 @@ unsafe fn push_fast<T>(v: &mut @[T], initval: T) {
         move_val_init(&mut(*p), initval);
     }
 
+    #[inline]
     unsafe fn push_slow<T>(v: &mut @[T], initval: T) {
         reserve_at_least(v, v.len() + 1u);
         push_fast(v, initval);
@@ -232,6 +239,7 @@ unsafe fn push_slow<T>(v: &mut @[T], initval: T) {
      * * v - A vector
      * * n - The number of elements to reserve space for
      */
+    #[inline]
     pub unsafe fn reserve<T>(v: &mut @[T], n: uint) {
         // Only make the (slow) call into the runtime if we have to
         if capacity(*v) < n {
@@ -243,6 +251,7 @@ pub unsafe fn reserve<T>(v: &mut @[T], n: uint) {
 
     // Implementation detail. Shouldn't be public
     #[allow(missing_doc)]
+    #[inline]
     pub fn reserve_raw(ty: *TyDesc, ptr: *mut *mut Box<Vec<()>>, n: uint) {
         // check for `uint` overflow
         unsafe {
@@ -257,6 +266,7 @@ pub fn reserve_raw(ty: *TyDesc, ptr: *mut *mut Box<Vec<()>>, n: uint) {
             }
         }
 
+        #[inline]
         fn local_realloc(ptr: *(), size: uint) -> *() {
             use rt::local::Local;
             use rt::task::Task;
@@ -281,6 +291,7 @@ fn local_realloc(ptr: *(), size: uint) -> *() {
      * * v - A vector
      * * n - The number of elements to reserve space for
      */
+    #[inline]
     pub unsafe fn reserve_at_least<T>(v: &mut @[T], n: uint) {
         reserve(v, uint::next_power_of_two(n));
     }
diff --git a/src/libstd/libc.rs b/src/libstd/libc.rs
index 6b54a176e89..9cf94e5a1b8 100644
--- a/src/libstd/libc.rs
+++ b/src/libstd/libc.rs
@@ -159,7 +159,7 @@
 pub use libc::funcs::c95::stdio::{fwrite, perror, puts, remove, rewind};
 pub use libc::funcs::c95::stdio::{setbuf, setvbuf, tmpfile, ungetc};
 
-pub use libc::funcs::c95::stdlib::{abort, abs, atof, atoi, calloc, exit};
+pub use libc::funcs::c95::stdlib::{abs, atof, atoi, calloc, exit};
 pub use libc::funcs::c95::stdlib::{free, getenv, labs, malloc, rand};
 pub use libc::funcs::c95::stdlib::{realloc, srand, strtod, strtol};
 pub use libc::funcs::c95::stdlib::{strtoul, system};
@@ -3226,7 +3226,6 @@ pub fn strtoul(s: *c_char, endp: **c_char, base: c_int)
                 pub fn malloc(size: size_t) -> *c_void;
                 pub fn realloc(p: *mut c_void, size: size_t) -> *mut c_void;
                 pub fn free(p: *c_void);
-                pub fn abort() -> !;
                 pub fn exit(status: c_int) -> !;
                 // Omitted: atexit.
                 pub fn system(s: *c_char) -> c_int;
diff --git a/src/libstd/local_data.rs b/src/libstd/local_data.rs
index 159337bf503..7ef7a256c16 100644
--- a/src/libstd/local_data.rs
+++ b/src/libstd/local_data.rs
@@ -280,7 +280,8 @@ fn get_with<T:'static,
 }
 
 fn abort() -> ! {
-    unsafe { libc::abort() }
+    use std::unstable::intrinsics;
+    unsafe { intrinsics::abort() }
 }
 
 /// Inserts a value into task local storage. If the key is already present in
diff --git a/src/libstd/rt/global_heap.rs b/src/libstd/rt/global_heap.rs
index 7a417990a4c..ce4072fb1ab 100644
--- a/src/libstd/rt/global_heap.rs
+++ b/src/libstd/rt/global_heap.rs
@@ -10,14 +10,10 @@
 
 use libc::{c_void, c_char, size_t, uintptr_t, free, malloc, realloc};
 use ptr::RawPtr;
-use unstable::intrinsics::TyDesc;
+use unstable::intrinsics::{TyDesc, abort};
 use unstable::raw;
 use mem::size_of;
 
-extern {
-    fn abort();
-}
-
 #[inline]
 pub fn get_box_size(body_size: uint, body_align: uint) -> uint {
     let header_size = size_of::<raw::Box<()>>();
@@ -34,6 +30,7 @@ fn align_to(size: uint, align: uint) -> uint {
 }
 
 /// A wrapper around libc::malloc, aborting on out-of-memory
+#[inline]
 pub unsafe fn malloc_raw(size: uint) -> *c_void {
     let p = malloc(size as size_t);
     if p.is_null() {
@@ -44,6 +41,7 @@ pub unsafe fn malloc_raw(size: uint) -> *c_void {
 }
 
 /// A wrapper around libc::realloc, aborting on out-of-memory
+#[inline]
 pub unsafe fn realloc_raw(ptr: *mut c_void, size: uint) -> *mut c_void {
     let p = realloc(ptr, size as size_t);
     if p.is_null() {
@@ -94,6 +92,7 @@ pub unsafe fn exchange_free_(ptr: *c_char) {
     exchange_free(ptr)
 }
 
+#[inline]
 pub unsafe fn exchange_free(ptr: *c_char) {
     free(ptr as *c_void);
 }
diff --git a/src/libstd/rt/local_heap.rs b/src/libstd/rt/local_heap.rs
index 1be942b2db1..90179612272 100644
--- a/src/libstd/rt/local_heap.rs
+++ b/src/libstd/rt/local_heap.rs
@@ -48,6 +48,7 @@ pub struct LocalHeap {
 }
 
 impl LocalHeap {
+    #[inline]
     pub fn new() -> LocalHeap {
         let region = MemoryRegion {
             allocations: ~[],
@@ -60,6 +61,7 @@ pub fn new() -> LocalHeap {
         }
     }
 
+    #[inline]
     pub fn alloc(&mut self, td: *TyDesc, size: uint) -> *mut Box {
         let total_size = global_heap::get_box_size(size, unsafe { (*td).align });
         let alloc = self.memory_region.malloc(total_size);
@@ -80,6 +82,7 @@ pub fn alloc(&mut self, td: *TyDesc, size: uint) -> *mut Box {
         return alloc;
     }
 
+    #[inline]
     pub fn realloc(&mut self, ptr: *mut Box, size: uint) -> *mut Box {
         // Make sure that we can't use `mybox` outside of this scope
         let total_size = size + mem::size_of::<Box>();
@@ -100,6 +103,7 @@ pub fn realloc(&mut self, ptr: *mut Box, size: uint) -> *mut Box {
         return new_box;
     }
 
+    #[inline]
     pub fn free(&mut self, alloc: *mut Box) {
         {
             // Make sure that we can't use `mybox` outside of this scope
@@ -196,6 +200,7 @@ fn from(a_box: *mut Box) -> *mut AllocHeader {
 }
 
 impl MemoryRegion {
+    #[inline]
     fn malloc(&mut self, size: uint) -> *mut Box {
         let total_size = size + AllocHeader::size();
         let alloc: *AllocHeader = unsafe {
@@ -210,6 +215,7 @@ fn malloc(&mut self, size: uint) -> *mut Box {
         return alloc.as_box();
     }
 
+    #[inline]
     fn realloc(&mut self, alloc: *mut Box, size: uint) -> *mut Box {
         rtassert!(!alloc.is_null());
         let orig_alloc = AllocHeader::from(alloc);
@@ -228,6 +234,7 @@ fn realloc(&mut self, alloc: *mut Box, size: uint) -> *mut Box {
         return alloc.as_box();
     }
 
+    #[inline]
     fn free(&mut self, alloc: *mut Box) {
         rtassert!(!alloc.is_null());
         let alloc = AllocHeader::from(alloc);
@@ -249,6 +256,7 @@ fn claim(&mut self, alloc: &mut AllocHeader) {
         }
     }
     #[cfg(not(rtdebug))]
+    #[inline]
     fn claim(&mut self, _alloc: &mut AllocHeader) {}
 
     #[cfg(rtdebug)]
@@ -260,6 +268,7 @@ fn release(&mut self, alloc: &AllocHeader) {
         }
     }
     #[cfg(not(rtdebug))]
+    #[inline]
     fn release(&mut self, _alloc: &AllocHeader) {}
 
     #[cfg(rtdebug)]
@@ -271,6 +280,7 @@ fn update(&mut self, alloc: &mut AllocHeader, orig: *AllocHeader) {
         }
     }
     #[cfg(not(rtdebug))]
+    #[inline]
     fn update(&mut self, _alloc: &mut AllocHeader, _orig: *AllocHeader) {}
 }
 
@@ -283,6 +293,7 @@ fn drop(&mut self) {
     }
 }
 
+#[inline]
 pub unsafe fn local_malloc(td: *libc::c_char, size: libc::uintptr_t) -> *libc::c_char {
     // XXX: Unsafe borrow for speed. Lame.
     let task: Option<*mut Task> = Local::try_unsafe_borrow();
@@ -295,6 +306,7 @@ pub unsafe fn local_malloc(td: *libc::c_char, size: libc::uintptr_t) -> *libc::c
 }
 
 // A little compatibility function
+#[inline]
 pub unsafe fn local_free(ptr: *libc::c_char) {
     // XXX: Unsafe borrow for speed. Lame.
     let task_ptr: Option<*mut Task> = Local::try_unsafe_borrow();
diff --git a/src/libstd/rt/util.rs b/src/libstd/rt/util.rs
index ee336d7d847..a5d5a4677f1 100644
--- a/src/libstd/rt/util.rs
+++ b/src/libstd/rt/util.rs
@@ -141,6 +141,7 @@ pub fn abort(msg: &str) -> ! {
     abort();
 
     fn abort() -> ! {
-        unsafe { libc::abort() }
+        use std::unstable::intrinsics;
+        unsafe { intrinsics::abort() }
     }
 }
diff --git a/src/libstd/unstable/lang.rs b/src/libstd/unstable/lang.rs
index e7e8cec9d5f..38c713ad7b7 100644
--- a/src/libstd/unstable/lang.rs
+++ b/src/libstd/unstable/lang.rs
@@ -29,6 +29,7 @@ pub fn fail_bounds_check(file: *c_char, line: size_t, index: size_t, len: size_t
 }
 
 #[lang="malloc"]
+#[inline]
 pub unsafe fn local_malloc(td: *c_char, size: uintptr_t) -> *c_char {
     ::rt::local_heap::local_malloc(td, size)
 }
@@ -37,6 +38,7 @@ pub unsafe fn local_malloc(td: *c_char, size: uintptr_t) -> *c_char {
 // inside a landing pad may corrupt the state of the exception handler. If a
 // problem occurs, call exit instead.
 #[lang="free"]
+#[inline]
 pub unsafe fn local_free(ptr: *c_char) {
     ::rt::local_heap::local_free(ptr);
 }