diff options
Diffstat (limited to 'src/libstd/rt/local_ptr.rs')
| -rw-r--r-- | src/libstd/rt/local_ptr.rs | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/src/libstd/rt/local_ptr.rs b/src/libstd/rt/local_ptr.rs index 925aa802ad5..b75f2927003 100644 --- a/src/libstd/rt/local_ptr.rs +++ b/src/libstd/rt/local_ptr.rs @@ -109,7 +109,9 @@ pub mod compiled { /// Does not validate the pointer type. #[inline] pub unsafe fn take<T>() -> ~T { - let ptr: ~T = cast::transmute(RT_TLS_PTR); + let ptr = RT_TLS_PTR; + assert!(!ptr.is_null()); + let ptr: ~T = cast::transmute(ptr); // can't use `as`, due to type not matching with `cfg(test)` RT_TLS_PTR = cast::transmute(0); ptr |