Purge borrowck from libstd

This hasn't been in use since `@mut` was removed

src/libstd/rt/mod.rs

@@ -127,9 +127,6 @@ mod util;
 // Global command line argument storage
 pub mod args;
 
-// Support for dynamic borrowck
-pub mod borrowck;
-
 /// The default error code of the rust runtime if the main task fails instead
 /// of exiting cleanly.
 pub static DEFAULT_ERROR_CODE: int = 101;

src/libstd/rt/task.rs

@@ -27,8 +27,6 @@ use option::{Option, Some, None};
 use prelude::drop;
 use result::{Result, Ok, Err};
 use rt::Runtime;
-use rt::borrowck::BorrowRecord;
-use rt::borrowck;
 use rt::local::Local;
 use rt::local_heap::LocalHeap;
 use rt::rtio::LocalIo;
@@ -52,8 +50,6 @@ pub struct Task {
     death: Death,
     destroyed: bool,
     name: Option<SendStr>,
-    // Dynamic borrowck debugging info
-    borrow_list: Option<~[BorrowRecord]>,
 
     logger: Option<~Logger>,
     stdout: Option<~Writer>,
@@ -93,7 +89,6 @@ impl Task {
             death: Death::new(),
             destroyed: false,
             name: None,
-            borrow_list: None,
             logger: None,
             stdout: None,
             stderr: None,
@@ -182,9 +177,6 @@ impl Task {
 
         unsafe { (*handle).unwinder.try(try_block); }
 
-        // Cleanup the dynamic borrowck debugging info
-        borrowck::clear_task_borrow_list();
-
         // Here we must unsafely borrow the task in order to not remove it from
         // TLS. When collecting failure, we may attempt to send on a channel (or
         // just run aribitrary code), so we must be sure to still have a local

src/libstd/unstable/lang.rs

@@ -12,7 +12,6 @@
 
 use c_str::ToCStr;
 use libc::{c_char, size_t, uintptr_t};
-use rt::borrowck;
 
 #[cold]
 #[lang="fail_"]
@@ -42,42 +41,3 @@ pub unsafe fn local_malloc(td: *c_char, size: uintptr_t) -> *c_char {
 pub unsafe fn local_free(ptr: *c_char) {
     ::rt::local_heap::local_free(ptr);
 }
-
-#[lang="borrow_as_imm"]
-#[inline]
-pub unsafe fn borrow_as_imm(a: *u8, file: *c_char, line: size_t) -> uint {
-    borrowck::borrow_as_imm(a, file, line)
-}
-
-#[lang="borrow_as_mut"]
-#[inline]
-pub unsafe fn borrow_as_mut(a: *u8, file: *c_char, line: size_t) -> uint {
-    borrowck::borrow_as_mut(a, file, line)
-}
-
-#[lang="record_borrow"]
-pub unsafe fn record_borrow(a: *u8, old_ref_count: uint,
-                            file: *c_char, line: size_t) {
-    borrowck::record_borrow(a, old_ref_count, file, line)
-}
-
-#[lang="unrecord_borrow"]
-pub unsafe fn unrecord_borrow(a: *u8, old_ref_count: uint,
-                              file: *c_char, line: size_t) {
-    borrowck::unrecord_borrow(a, old_ref_count, file, line)
-}
-
-#[lang="return_to_mut"]
-#[inline]
-pub unsafe fn return_to_mut(a: *u8, orig_ref_count: uint,
-                            file: *c_char, line: size_t) {
-    borrowck::return_to_mut(a, orig_ref_count, file, line)
-}
-
-#[lang="check_not_borrowed"]
-#[inline]
-pub unsafe fn check_not_borrowed(a: *u8,
-                                 file: *c_char,
-                                 line: size_t) {
-    borrowck::check_not_borrowed(a, file, line)
-}