std: Remove unstable::lang

Put the lonely lang items here closer to the code they are calling.

Author: brson

src/libstd/rt/local_heap.rs

@@ -276,6 +276,14 @@ impl Drop for MemoryRegion {
     }
 }
 
+
+#[cfg(not(test))]
+#[lang="malloc"]
+#[inline]
+pub unsafe fn local_malloc_(drop_glue: fn(*mut u8), size: uint, align: uint) -> *u8 {
+    local_malloc(drop_glue, size, align)
+}
+
 #[inline]
 pub unsafe fn local_malloc(drop_glue: fn(*mut u8), size: uint, align: uint) -> *u8 {
     // FIXME: Unsafe borrow for speed. Lame.
@@ -288,7 +296,16 @@ pub unsafe fn local_malloc(drop_glue: fn(*mut u8), size: uint, align: uint) -> *
     }
 }
 
-// A little compatibility function
+#[cfg(not(test))]
+#[lang="free"]
+#[inline]
+pub unsafe fn local_free_(ptr: *u8) {
+    local_free(ptr)
+}
+
+// NB: Calls to free CANNOT be allowed to fail, as throwing an exception from
+// inside a landing pad may corrupt the state of the exception handler. If a
+// problem occurs, call exit instead.
 #[inline]
 pub unsafe fn local_free(ptr: *u8) {
     // FIXME: Unsafe borrow for speed. Lame.

src/libstd/rt/unwind.rs

@@ -376,6 +376,24 @@ pub mod eabi {
     }
 }
 
+#[cold]
+#[lang="fail_"]
+#[cfg(not(test))]
+pub fn fail_(expr: *u8, file: *u8, line: uint) -> ! {
+    begin_unwind_raw(expr, file, line);
+}
+
+#[cold]
+#[lang="fail_bounds_check"]
+#[cfg(not(test))]
+pub fn fail_bounds_check(file: *u8, line: uint, index: uint, len: uint) -> ! {
+    use c_str::ToCStr;
+
+    let msg = format!("index out of bounds: the len is {} but the index is {}",
+                      len as uint, index as uint);
+    msg.with_c_str(|buf| fail_(buf as *u8, file, line))
+}
+
 /// This is the entry point of unwinding for things like lang items and such.
 /// The arguments are normally generated by the compiler, and need to
 /// have static lifetimes.

src/libstd/unstable/lang.rs

@@ -17,8 +17,6 @@ pub mod dynamic_lib;
 
 pub mod finally;
 pub mod simd;
-#[cfg(not(test))]
-pub mod lang;
 pub mod sync;
 pub mod mutex;
 pub mod stack;