diff options
Diffstat (limited to 'src/test/codegen/mir_zst_stores.rs')
-rw-r--r-- | src/test/codegen/mir_zst_stores.rs | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/codegen/mir_zst_stores.rs b/src/test/codegen/mir_zst_stores.rs new file mode 100644 index 000000000..17e7ba309 --- /dev/null +++ b/src/test/codegen/mir_zst_stores.rs @@ -0,0 +1,17 @@ +// compile-flags: -C no-prepopulate-passes + +#![crate_type = "lib"] +use std::marker::PhantomData; + +#[derive(Copy, Clone)] +struct Zst { phantom: PhantomData<Zst> } + +// CHECK-LABEL: @mir +// CHECK-NOT: store{{.*}}undef +#[no_mangle] +pub fn mir() { + let x = Zst { phantom: PhantomData }; + let y = (x, 0); + drop(y); + drop((0, x)); +} |