1 files changed, 16 insertions, 7 deletions
diff --git a/src/libcore/rt.rs b/src/libcore/rt.rs
index 644edb69d56..9bc83a5f904 100644
--- a/src/libcore/rt.rs
+++ b/src/libcore/rt.rs
@@ -11,10 +11,9 @@ use libc::uintptr_t;
 use gc::{cleanup_stack_for_failure, gc, Word};
 
 #[allow(non_camel_case_types)]
-type rust_task = c_void;
+pub type rust_task = c_void;
 
 extern mod rustrt {
-    #[legacy_exports];
     #[rust_stack]
     fn rust_upcall_fail(expr: *c_char, file: *c_char, line: size_t);
 
@@ -35,13 +34,23 @@ extern mod rustrt {
 // 'rt_', otherwise the compiler won't find it. To fix this, see
 // gather_rust_rtcalls.
 #[rt(fail_)]
-fn rt_fail_(expr: *c_char, file: *c_char, line: size_t) {
+pub fn rt_fail_(expr: *c_char, file: *c_char, line: size_t) {
     cleanup_stack_for_failure();
     rustrt::rust_upcall_fail(expr, file, line);
 }
 
+#[rt(fail_bounds_check)]
+pub fn rt_fail_bounds_check(file: *c_char, line: size_t,
+                        index: size_t, len: size_t) {
+    let msg = fmt!("index out of bounds: the len is %d but the index is %d",
+                    len as int, index as int);
+    do str::as_buf(msg) |p, _len| {
+        rt_fail_(p as *c_char, file, line);
+    }
+}
+
 #[rt(exchange_malloc)]
-fn rt_exchange_malloc(td: *c_char, size: uintptr_t) -> *c_char {
+pub fn rt_exchange_malloc(td: *c_char, size: uintptr_t) -> *c_char {
     return rustrt::rust_upcall_exchange_malloc(td, size);
 }
 
@@ -49,12 +58,12 @@ fn rt_exchange_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.
 #[rt(exchange_free)]
-fn rt_exchange_free(ptr: *c_char) {
+pub fn rt_exchange_free(ptr: *c_char) {
     rustrt::rust_upcall_exchange_free(ptr);
 }
 
 #[rt(malloc)]
-fn rt_malloc(td: *c_char, size: uintptr_t) -> *c_char {
+pub fn rt_malloc(td: *c_char, size: uintptr_t) -> *c_char {
     return rustrt::rust_upcall_malloc(td, size);
 }
 
@@ -62,7 +71,7 @@ fn rt_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.
 #[rt(free)]
-fn rt_free(ptr: *c_char) {
+pub fn rt_free(ptr: *c_char) {
     rustrt::rust_upcall_free(ptr);
 }