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Diffstat (limited to 'tests/ui/allocator/xcrate-use.rs')
-rw-r--r-- | tests/ui/allocator/xcrate-use.rs | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/tests/ui/allocator/xcrate-use.rs b/tests/ui/allocator/xcrate-use.rs new file mode 100644 index 000000000..edd4df75e --- /dev/null +++ b/tests/ui/allocator/xcrate-use.rs @@ -0,0 +1,36 @@ +// run-pass + +// aux-build:custom.rs +// aux-build:helper.rs +// no-prefer-dynamic + +#![feature(allocator_api)] +#![feature(slice_ptr_get)] + +extern crate custom; +extern crate helper; + +use std::alloc::{Allocator, Global, Layout, System}; +use std::sync::atomic::{AtomicUsize, Ordering}; + +#[global_allocator] +static GLOBAL: custom::A = custom::A(AtomicUsize::new(0)); + +fn main() { + unsafe { + let n = GLOBAL.0.load(Ordering::SeqCst); + let layout = Layout::from_size_align(4, 2).unwrap(); + + let memory = Global.allocate(layout.clone()).unwrap(); + helper::work_with(&memory); + assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 1); + Global.deallocate(memory.as_non_null_ptr(), layout); + assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2); + + let memory = System.allocate(layout.clone()).unwrap(); + assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2); + helper::work_with(&memory); + System.deallocate(memory.as_non_null_ptr(), layout); + assert_eq!(GLOBAL.0.load(Ordering::SeqCst), n + 2); + } +} |